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DRY TYPE TRANSFORMERS Pioneer Electric

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DRY TYPE TRANSFORMERS Pioneer Electric Powered By Docstoc
					           DRY TYPE
        TRANSFORMERS

Single Phase Isolation Transformers...........A1

Three Phase Isolation Transformers............A2

Autotransformers..........................................A3

Energy Efficient Transformers.....................A5

Electrostatically Shielded Transformers.....A6

Non-Linear Load Transformers....................A7

Drive Isolation Transformers.......................A8

Transformer Construction............................A9

Easy Selection Guide..................................A10

Catalogue Numbering System...................A11




                               A1
                            DRY TYPE TRANSFORMERS

Single Phase Isolation (Double-Wound) Transformers

Applications
Isolation transformers should be used on all systems
which require grounding of the load. Pioneer Electric
single phase distribution transformers are ideal for
supplying auxiliary lighting circuits from 600V and lower
supplies as well as electric heating equipment.


Features
•   General purpose ventilated steel enclosure suitable
    for indoor, dry locations. After fabrication, all metal
    is finished in ASA 61 gray powder coating suitable
    for most industrial and commercial installations.
•   Transformers rated up to 75 KVA may be readily
    hung on H-columns, walls, shelves, or floor mounted
    to suit each installation. Most units have lifting
    lugs, conduit KOs, and a removable front cover for
    convenient access to terminals.                                   Typical Electrical and Tap Configurations:
•   Transformers rated above 75 KVA are suitable for          H2                X1                      X1                          X1
    floor or platform mounting and come complete
    with integral lifting lugs and removable front panels                                               X2         H2               X3
    for convenient access to terminals.                                                 H2
                                                                                                                   H4
                                                                                X3      H4                         H6
•   Transformer terminations rated below 330 amps                               X2      H3                         H5
                                                                                        H1
    are supplied with suitable hardware and lugs for                                                    X3
                                                                                                                   H3
                                                                                                                   H1               X2
    cable connection. Terminations above 330 amps are
    supplied with terminal pads only.                         H1                X4
                                                                                                         X4                         X4
•   Primary windings have full capacity taps for supply            UP TO 3KVA                5KVA TO 10KVA          15KVA AND UP
    voltage compensation and split secondaries for
                                                                                        TAP CONNECTIONS           TAP CONNECTIONS
    flexibility.                                                                        H1-H2      95%            H1-H2      95%
                                                                                        H2-H3     100%            H2-H3    97.5%
•   Class 220 insulation used throughout.                                               H3-H4     105%            H3-H4     100%
                                                                                                                  H4-H5   102.5%
•   CSA certified and UL listed.                                                                                  H5-H6     105%




                                       Catalog No.                                                 Enclosure Dim. (in.)
                                                                                                                            Weight
KVA      Al Windings    Al Windings   Cu Windings    Cu Windings                     Taps
                                                                            Length Depth Height                              (lbs.)
       600V-120V/240V 480V-120V/240V 600V-120V/240V 480V-120V/240V
  5          N/A            N/A          SC5JK/Z        SC5HK/Z        0     11.00 11.00 14.25                                 80
 7.5         N/A            N/A         SC7.5JK/Z     SC7.5HK/Z       5%     15.75 16.00 21.00                                100
 10          N/A            N/A         SC10JK/Z       SC10HK/Z       5%     15.75 16.00 21.00                                110
 15        SA15JK/Z      SA15HK/Z       SC15JK/Z       SC15HK/Z       5%     15.75 16.00 21.00                                155
 25        SA25JK/Z      SA25HK/Z       SC25JK/Z       SC25HK/Z    2 x 2.5% 20.50 20.75 26.25                                 221
37.5       SA37JK/Z      SA37HK/Z       SC37JK/Z       SC37HK/Z    2 x 2.5% 20.50 20.75 26.25                                 325
 50        SA50JK/Z      SA50HK/Z       SC50JK/Z       SC50HK/Z    2 x 2.5% 20.50 20.75 26.25                                 365
 75        SA75JK/Z      SA75HK/Z       SC75JK/Z       SC75HK/Z    2 x 2.5% 24.50 22.00 31.50                                 540
100       SA100JK/Z     SA100HK/Z      SC100JK/Z      SC100HK/Z    2 x 2.5% 30.75 29.75 31.75                                 720
150       SA150JK/Z     SA150HK/Z      SC150JK/Z      SC150HK/Z    2 x 2.5% 40.00 37.00 45.75                                 998
167       SA167JK/Z     SA167HK/Z      SC167JK/Z      SC167HK/Z    2 x 2.5% 40.00 37.00 45.75                                 1080
250       SA250JK/Z     SA250HK/Z      SC250JK/Z      SC250HK/Z    2 x 2.5% 40.00 37.00 45.75                                 1370


                                                              A1
                              DRY TYPE TRANSFORMERS

Three Phase Isolation (Double-Wound) Transformers

 Applications                                                                               Features
 Designed for indoor installations in hotels, schools,                                      •   Using computer aided design techniques and modern
 factories, industrial, and commercial buildings where a                                        materials, Pioneer Electric engineers have created a
 reliable power source is required for lighting and other low                                   range of highly efficient transformers having long
 voltage equipment and machinery.                                                               trouble-free life with reduced weight, size, and cost.
                                                                                            •   Ventilation openings in the enclosure are coordinated
                                                                                                with the cooling ducts in the coils to ensure proper
                                                                                                natural circulation of the cooling air for long life and
Typical Electrical and Tap Configurations:                                                      minimum losses.
                                                                                            •   General purpose ventilated steel enclosure, suitable
                        H2            105%                                                      for indoor locations. After fabrication, the enclosures
                                                                        X2
 TAP CONNECTIONS
                                      100%                                                      are finished in ASA 61 gray powder coating suitable
                                       95%
       2 ±5%                                        DELTA PRIMARY
                                                4 WIRE WYE SECONDARY
                                                                                                for most industrial and commercial installations.
         H1                                                                                 •   Transformers rated up to 75 KVA may be readily hung
                                                                             X0
                                                      X1
                                                                                                on H-columns, walls, shelves, or floor mounted to suit
                                                                                                each installation. All units have lifting lugs, conduit
                                H3
                                                                                  X3
                                                                                                KOs, and a removable front cover for convenient
                                                                                                access to terminals.
                                                                                            •   Transformers rated 112.5 - 300 KVA are suitable for
            H2
                              105%
                             102.5%
                                                                       X2                       floor or platform mounting and come complete with
                              100%
                              97.5%                                                             integral lifting lugs as well as removable top, front,
                               95%
                                                                                                and rear panels for convenient access to terminals.
                     WYE PRIMARY (NO NEUTRAL CON.)         X1
                          DELTA SECONDARY                                                   •   Transformer terminations rated below 330 amps
                                 H3
                                                                                                are supplied with suitable hardware and lugs for
                                             TAP CONNECTIONS
                                                 4 ±2.5%               X3                       cable connection. Terminations above 330 amps are
       H1                                                                                       supplied with terminal pads only.
                                                                                            •   Class 220 insulation used throughout.
                                                                                            •   CSA certified and UL listed.

                                                Catalog No.                                                            Enclosure Dim. (in.)
                                                                                                                                                Weight
KVA       Cu Windings     Cu Windings     Cu Windings    Cu Windings                                       Taps
                                                                                                                     Length Depth Height         (lbs.)
         600Δ - 208Y/120 480Δ - 208Y/120 416Δ - 208Y/120 600Y - 240Δ
 3          BC3JM/Z         BC3HM/Z         BC3GM/Z        BC3QC/Z                                          -         11.00    11.00    14.25      85
 6          BC6JM/Z         BC6HM/Z         BC6GM/Z        BC6QC/Z                                        ±5%         15.75    16.00    21.00      130
 9          BC9JM/Z         BC9HM/Z         BC9GM/Z        BC9QC/Z                                        ±5%         15.75    16.00    21.00      143
15          BC15JM/Z       BC15HM/Z        BC15GM/Z       BC15QC/Z                                        ±5%         20.50    16.00    21.00      188
30          BC30JM/Z       BC30HM/Z        BC30GM/Z       BC30QC/Z                                     ±2.5%, ±5%     20.50    20.75    26.25      298
45          BC45JM/Z       BC45HM/Z        BC45GM/Z       BC45QC/Z                                     ±2.5%, ±5%     20.50    20.75    26.25      360
75          BC75JM/Z       BC75HM/Z        BC75GM/Z       BC75QC/Z                                     ±2.5%, ±5%     24.50    22.00    31.50      515
112        BC112JM/Z       BC112HM/Z       BC112GM/Z      BC112QC/Z                                    ±2.5%, ±5%     30.75    29.75    31.75      780
150        BC150JM/Z       BC150HM/Z       BC150GM/Z      BC150QC/Z                                    ±2.5%, ±5%     30.75    29.75    31.75      970
225        BC225JM/Z       BC225HM/Z       BC225GM/Z      BC225QC/Z                                    ±2.5%, ±5%     40.00    37.00    45.75     1460
300        BC300JM/Z       BC300HM/Z       BC300GM/Z      BC300QC/Z                                    ±2.5%, ±5%     40.00    37.00    45.75     1835

Notes
 •    Other primary and secondary voltages available.
 •    All enclosures listed are indoor type. Outdoor enclosures available, refer to factory.
 •    All dimensions are subject to change and should not be used for construction purposes. Certified drawings provided upon request.
 •    Shipping weights are approximate. Actual weights may be higher due to packaging and crating.

                                                                                       A2
                                    DRY TYPE TRANSFORMERS

Autotransformers

Applications                                                                Features
Autotransformers are an economical and compact means                        •     Performs same function as an isolation transformer
of connecting electrical equipment to a power supply of a                         of same KVA and voltage rating without the
different voltage. Part of the winding is common to both                          isolation feature.
primary and secondary circuits so there is no isolation                     •     Generally radiates less noise than equivalent
between the two. This may not be acceptable on some                               isolation transformer.
power systems which do not have a grounded neutral on
the secondary side of the main power transformer. Typical                   •     All terminals are clearly identified and easy to
applications include motor loads of industrial machinery,                         connect.
electric heating, air conditioners, etc.                                    •     May be used in either step-up or step-down
                                                                                  configurations.
Typical Three Phase Electrical Configuration
                                                                            •     Low regulation; less than 3%.
                         HV(H1)

                         LV(X1)                                             •     General purpose ventilated steel enclosure, suitable
                                                                                  for indoor locations. After fabrication, the enclosures
                                                                                  are finished in ASA 61 gray powder coating suitable
                                                                                  for most industrial and commercial installations.
                                      LV(X3)
                        LV(X2)            HV(H3)                            •     Transformers in up to #7 enclosures may be
                    HV(H2)
                                                                                  readily hung on H-columns, walls, shelves, or floor
                                                                                  mounted to suit each installation. All units have
 Enclosure Dimensions                                                             lifting lugs, conduit KOs, and a removable front
   Size No.        Length            Depth           Height                       cover for convenient access to terminals.
      0             9.50              7.00            8.00                  •     Transformers in #8 or larger enclosures are suitable
      1             12.00             9.00            10.00                       for floor or platform mounting and come complete
      2             11.00            11.00            14.25                       with integral lifting lugs as well as removable top,
      3             15.50            11.00            14.25                       front, and rear panels for convenient access to
      4             15.75            16.00            21.00                       terminals.
      5             20.50            16.00            21.00
                                                                            •     Transformer terminations rated below 330 amps
      6             20.50            20.75            26.25
                                                                                  are supplied with suitable hardware and lugs for
      7             24.50            22.00            31.50                       cable connection. Terminations above 330 amps are
      8             30.75            29.75            31.75                       supplied with terminal pads only.
      9             40.00            37.00            45.75
      10            46.00            40.00            64.50                 •     Class 220 insulation used throughout.
      11            60.00            45.00            69.00                 •     CSA certified and UL listed.
      12            73.00            45.00            78.00

  Single Phase Autotransfomers
                600V - 480V, 60Hz                  480V - 240V, 60Hz            240V - 208V, 60Hz            240V - 120V, 50/60Hz
   KVA                       Encl. Weight                 Encl. Weight                  Encl. Weight                      Encl. Weight
              Cat. No.                         Cat. No.                     Cat. No.                        Cat. No.
                             Size   (lbs.)                Size   (lbs.)                 Size     (lbs.)                   Size     (lbs.)
    3       MC3JH             #0     8.00  MC3HC           #1      40   MC3CB            #0        20      MC3CA/50        #1        40
    5       MC5JH             #0    10.00 MC5HC            #1      60   MC5CB            #0        25      MC5CA/50        #1        55
   7.5      MC7H              #1    10.00 MC7HC            #1      80   MC7CB            #1        30      MC7CA/50        #1        75
    10     MC10JH             #1    10.00 MC10HC           #2      90   MC10CB           #1        35      M10CA/50        #2        90
    15     MC15JH             #1    14.25 MC15HC           #2     110   MC15CB           #1        45     MC15CA/50        #2       110
    25     MC25JH             #2    14.25 MC25HC           #4     150   MC25CB           #2        60     MC25CA/50        #4       150
   37.5    MC37JH             #2    21.00 MC37HC           #4     200   MC37CB           #2        90     MC37CA/50        #4       200
    50     MC50JH             #4    26.25 MC50HC           #6     235   MC50CB           #4       130     MC50CA/50        #6       235
    75     MC75JH             #4    26.25 MC75HC           #6     275   MC75CB           #4       165     MC75CA/50        #6       275
   100     MC100JH            #4    31.50 MC100HC          #6     315 MC100CB            #4       200     MC100CA/50       #6       315
   150     MC150JH            #6    31.50 MC150HC          #7     345 MC150CB            #4       240     MC150CA/50       #7       345

                                                                       A3
                          DRY TYPE TRANSFORMERS


600Y PRIMARY VOLTS - 480Y SECONDARY VOLTS, 3Ø                              600Y PRIMARY VOLTS - 240Y SECONDARY VOLTS, 3Ø
                                        Weight                                                                     Weight
   KVA     Catalog No.   Enclosure Size                                       KVA     Catalog No.   Enclosure Size
                                         (lbs.)                                                                     (lbs.)
     3        RC3JH            #1          21                                   3        RC3JC            #1          40
     6        RC6JH            #1          34                                   6        RC6JC            #1          75
     9        RC9JH            #3          45                                   9        RC9JC            #3         120
    15       RC15JH            #3          65                                  15       RC15JC            #3         155
    30       RC30JH            #5         115                                  30       RC30JC            #5         225
    45       RC45JH            #6         135                                  45       RC45JC            #6         265
    75       RC75JH            #6         200                                  75       RC75JC            #6         400
   112       RC112JH           #7         225                                 112       RC112JC           #7         550
   150       RC150JH           #7         265                                 150       RC150JC           #7         610
   225       RC225JH           #8         450                                 225       RC225JC           #8         970
   300       RC300JH           #9         525                                 300       RC300JC           #9        1300


240Y PRIMARY VOLTS - 208Y SECONDARY VOLTS, 3Ø                              600Y PRIMARY VOLTS - 208Y SECONDARY VOLTS, 3Ø
                                                           Weight                                                               Weight
    KVA         Catalog No.          Enclosure Size                             KVA          Catalog No.    Enclosure Size
                                                             (lbs.)                                                               (lbs.)
     3             RC3CB                    #0                 18                 3                RC3JB          #1                45
     6             RC6CB                    #0                 21                 6                RC6JB          #1                70
     9             RC9CB                    #1                 30                 9                RC9JB          #3               130
    15            RC15CB                    #1                 52                15               RC15JB          #3               130
    30            RC30CB                    #3                 70                30               RC30JB          #5               210
    45            RC45CB                    #3                125                45               RC45JB          #6               250
    75            RC75CB                    #5                135                75               RC75JB          #6               360
    112           RC112CB                   #5                180                112              RC112JB         #7               555
    150           RC150CB                   #6                200                150              RC150JB         #8               650
    225           RC225CB                   #6                240                225              RC225JB         #8               920
    300           RC300CB                   #7                300                300              RC300JB         #9              1330

480Y PRIMARY VOLTS - 240Y SECONDARY VOLTS, 3Ø                              480Y PRIMARY VOLTS - 208Y SECONDARY VOLTS, 3Ø
                                        Weight                                                                                 Weight
   KVA     Catalog No.   Enclosure Size                                        KVA           Catalog No.    Enclosure Size
                                         (lbs.)                                                                                  (lbs.)
     3        RC3HC            #1          65                                    3             RC3HB             #1                65
     6        RC6HC            #1          85                                    6             RC6HB             #1                85
     9        RC9HC            #3         110                                    9             RC9HB             #3               110
    15       RC15HC            #3         125                                   15            RC15HB             #3               130
    30       RC30HC            #5         200                                   30            RC30HB             #5               200
    45       RC45HC            #5         225                                   45            RC45HB             #5               225
    75       RC75HC            #6         325                                   75            RC75HB             #6               325
   112       RC112HC           #7         450                                   112           RC112HB            #7               450
   150       RC150HC           #7         550                                   150           RC150HB            #7               550
   225       RC225HC           #8         675                                   225           RC225HB            #8               675
   300       RC300HC           #8         900                                   300           RC300HB            #8               900

Notes
•   Other primary and secondary voltages available.
•   Standard units do not have primary taps. Taps available on special order, refer to factory.
•   All enclosures listed are indoor type. Outdoor enclosures available, refer to factory.
•   All dimensions are subject to change and should not be used for construction purposes. Certified drawings provided upon request.


                                                                      A4
                              DRY TYPE TRANSFORMERS

Energy Efficient Transformers (e-RatedTM)

Applications                                                               Features
As energy prices rise, it is imperative to reduce the operating            To meet NEMA TP-1 and CSA C802 transformer efficiency
costs of electrical systems. All transformers have losses                  standards, transformer cores are made with higher grade
that appear in the form of heat. Transformers designed for                 silicon steel, constructed with special miter arrangements,
temperature rises of 80°C or 115°C and with the special                    and utilize winding conductors that have lower resistance to
grade core steel will operate at lower than normal losses.                 reduce losses.
Therefore, have greater life expectancy, lower operating
costs, and significantly enhanced overload capabilities.                   Pioneer Electric e-RatedTM transformers meet or exceed TP-1
                                                                           and C802 requirements. In addition, if the transformers are
                                                                           operating at a temperature rise of 80°C or 115°C they will
Transformer Losses                                                         have approximately 35% and 20% lower losses, respectively
Core Losses: Are mainly caused by the resistance of the                    compared to conventional 150°C rise units.
iron core to the magnetic flux magnetizing it. These losses
can be reduced by lowering the flux density, using higher                  An additional benefit of Pioneer Electric e-RatedTM
grade steel, special construction, and exacting assembly                   transformers is their enhanced overload capability. e-RatedTM
techniques. In most cases, the core loss has the greater                   transformers with 80°C or 115°C temperature rise can be
effect on total losses. Since core losses are present at all               operated at 150°C and yield overload capability of 30% or
times when the transformer is energized while load losses                  15% without reducing life expectancy or service reliability.
are proportional to transformer load.
                                                                           Enclosure Dimensions
Load Losses: Are caused primarily by the resistance of the                    Size No.       Length          Depth          Height
winding conductors to the current which flows through                            0            9.50            7.00            8.00
them. These losses can be reduced by lowering the                                1            12.00           9.00           10.00
resistance of the windings and by lowering the temperature                       2            11.00          11.00           14.25
rise of the unit.                                                                3            15.50          11.00           14.25
                                                                                 4            15.75          16.00           21.00
  Total Losses = Core Loss + (%Load2 X Winding Loss)                             5            20.50          16.00           21.00
                                                                                 6            20.50          20.75           26.25
                                                                                 7            24.50          22.00           31.50
                                                                                 8            30.75          29.75           31.75
                                                                                 9            40.00          37.00           45.75
                                                                                 10           46.00          40.00           64.50
                                                                                 11           60.00          45.00           69.00
                                                                                 12           73.00          45.00           78.00
 Energy Efficient Transfomers
                     115°C Temp. Rise, 600V - 120Y208V                                 80°C Temp. Rise, 600V - 120Y208V
   KVA                                      Enclosure             Weight                                      Enclosure Weight
                Cat. No.         Taps                                            Cat. No.          Taps
                                               Size               (lbs.)                                         Size    (lbs.)
     3        BC3JM/T115           -            #4                 105          BC3JM/T80            -            #4      120
     6        BC6JM/T115         ±5%            #4                 135          BC6JM/T80          ±5%            #4      160
     9        BC9JM/T115         ±5%            #5                 168          BC9JM/T80          ±5%            #5      185
    15       BC15JM/T115         ±5%            #6                 230         BC15JM/T80          ±5%            #6      260
    30       BC30JM/T115      ±2.5%, ±5%        #6                 290         BC30JM/T80      ±2.5%, ±5%         #7      360
    45       BC45JM/T115      ±2.5%, ±5%        #7                 430         BC45JM/T80      ±2.5%, ±5%         #8      500
    75       BC75JM/T115      ±2.5%, ±5%        #8                 610         BC75JM/T80      ±2.5%, ±5%         #9      780
    112      BC112JM/T115 ±2.5%, ±5%            #9                 920         BC112JM/T80     ±2.5%, ±5%         #9     1140
    150      BC150JM/T115 ±2.5%, ±5%            #9                1230         BC150JM/T80     ±2.5%, ±5%         #9     1460
    225      BC225JM/T115 ±2.5%, ±5%            #9                1650         BC225JM/T80     ±2.5%, ±5%         #9     1850
    300      BC300JM/T115 ±2.5%, ±5%           #10                2600         BC300JM/T80     ±2.5%, ±5%        #10     2800


                                                                     A5
                          DRY TYPE TRANSFORMERS

Electrostatically Shielded Transformers

Applications                                                           Features
•   Hospital operating rooms and X-ray equipment                       •    Shielded transformers are available with copper or
•   Computer installations                                                  aluminum windings.

•   Data processing                                                    •    Knock outs provided for simplified wiring.

•   Programmable controllers                                           •    General purpose ventilated steel enclosure,
                                                                            suitable for indoor locations. After fabrication,
•   Instrumentation                                                         the enclosures are finished in ASA 61 gray
                                                                            powder coating suitable for most industrial and
Electral Noise                                                              commercial installations.
Electrostatically (faraday) shielded transformers are                  •    Transformers rated up to 75KVA may be readily
designed to protect sensitive electrical equipment and                      hung on H-columns, walls, shelves, or floor
electronic devices and systems from high frequency                          mounted to suit each installation. All units have
voltages (electrical noise) or transients that occur due to                 lifting lugs, conduit KOs, and a removable front
switching and loading on distribution lines.                                cover for convenient access to terminals.
                                                                       •    Transformers rated above 75KVA are suitable for
Electrical noise and transients are classified in two ways:
                                                                            floor or platform mounting and come complete
                                                                            with provisions for lifting as well as removable
Normal mode: Noise which appears between the hot and
                                                                            top, front, and rear panels for convenient access to
neutral current carrying conductors.
                                                                            terminals.
Common mode: Noise which appears between the                           •    Internal ground lugs.
ground wire, hot, and neutral current carrying conductors.             •    Class 220 insulation used throughout.
Common mode noise is more prevalent and should be the
                                                                       •    CSA certified and UL listed.
key criterion for any noise suppression device.

Electrostatic Shielding
The shielded transformer suppresses common                                       Shielded Transformer
mode noise by introducing a grounded shield
between its primary and secondary windings. The
grounded shield provides a low resistance path to                                             Winding        Secondary

ground by the effect of capacitive coupling which                                            Capacitance
                                                                                                                   Protected
prevents high frequency signals present in the                                     Primary
                                                                                                                     Load
source voltage from reaching the secondary of
the transformer and subsequently the connected          Dirty power with noise                                                  Clean power out of the
load.                                                   and spikes into the                                                     shielded transformer
                                                        shielded transformer
The electrostatic shield will not perform any                                                                Ground

function with regard to harmonic current or
voltage distrotion of waveforms. By redirecting
unwanted commom mode electrical noise and
transients generated on the source side of the
transformer to ground the shield is extremely                                            Common Mode Noise Attenuation
valuable in protecting sensitive equipment                Three Phase Isolation
                                                           Transformer Shield       Minimum                 Range
connected to the transformer output.                                                                                           Ratio Range
                                                                                      (dB)                   (dB)
The ratio of the common mode noise attenuation                  No Shield                 12                12 - 20               10:1
on the input to that of the output is expressed in            Single Shield               50                50 - 65              1000:1
Decibels (dB).                                                Double Shield               65                65 - 90             10,000:1
Isolation transformers with electrostatic shields              Triple Shield              90               90 - 120             100,000:1
installed can have input to output noise ratios               Ultra Isolating            120               120 - 150           1,000,000:1
within the range of 10:1 to 1,000,000 or higher.

                                                               A6
                                 DRY TYPE TRANSFORMERS

 Non-Linear Load Transformers (K-Factor Rated)

 Applications                                                                Effects on Transformers
 Today`s modern electronic, electrical components, and                       The major components in the harmonic currents of switching
 circuitry such as computers, copiers, printers, fax machines                mode power supplies are the third and fifth harmonics.
 and display terminals utilize switching mode power supplies                 Harmonics which are multiples of 3 such as the 3rd, 6th, 9th,
 for their operation. These switching mode power supplies                    etc. are called triplen harmonics. When triplen harmonics
 are non-linear in nature and cause significant power system                 are present in a three phase system they add together in the
 problems:                                                                   neutral conductor. Third harmonics result in a high 180Hz
 •    Circuit breakers and fuses blowing far below their cur-                current flowing through the transformer neutral terminal.
      rent ratings.                                                          The core steel of the transformer has stray losses which will
                                                                             increase dramatically with harmonic distortion. These effects
 •    Neutrals in transformers and panelboards are much                      cause the transformers to operate at significantly higher
      hotter than their ratings.                                             temperatures.
 •    Distribution transformers are overheating even when
      operating well within their specified nameplate ratings.               K - Ratings
                                                                             A K-factor rating applied to a transformer is an index of the
 These problems are the result of harmonics. Solid state
                                                                             transformers ability to supply harmonic content in its load
 switching elements such as SCR`s, transistors, and
                                                                             current while operating within its temperature limits.
 capacitors which are found in computers, fax machines,
 energy efficient ballasts, etc. continuously switch on and off
                                                                             For dry-type transformers a K-factor calculation is made
 producing non-linear or non-sinusoidal wave shapes in the
                                                                             to determine the amount of harmonic content present in
 current supplied from the power source.
                                                                             a power system. K-rated transformers are sized to handle
                                                                             100% of the fundamental 60Hz load plus the non-linear load
 A linear load uses current from the power source
                                                                             specified. The neutral of the transformer is sized at 200% of
 continuously over the sinusoidal cycle. A non-linear load
                                                                             the current rating of the phase connections.
 uses current in large pulses from the power source which
 creates harmonic distortion.
                                                                             Selecting Transformer K-Rating Based on Load Type:
 Harmonic components are represented by periodic waves
                                                                             K-factor 1: Motors
 that have a frequency that is a multiple of the fundamental
                                                                                         Incandescent Lighting
 frequency. Harmonic frequencies superimpose themselves
                                                                                         Resistance Heating
 upon the fundamental waveform distorting it and changing
                                                                                         Motor Generators (without solid state drives)
 the magnitude.
                                                                             K-factor 4: HID Lighting
 Effects of Harmonic Components on the                                                   Induction Heaters
 Sinusoidal Cycle                                                                        Welders
                                                                                         UPS with optional input filtering
                                                                                         PLC’s and Solid-State Drives
Distorted Non-Linear Wave = Fundamental + 3rd Harmonic + 5th Harmonic
                                                                             K-factor 13: Multiple receptacle circuits in health facilities
                                                                                          UPS without input filtering
                                                                                          Production or assembly line equipment
                                                                                          Facilities and classrooms of schools

                                                                             K-factor 20: SCR variable speed drives
                                                                                          Circuits with data processing equipment
                                                                                          Main-frame computers
                                                                                          Critical care areas and hospital operating rooms

                                                                             Pioneer Electric can calculate and provide K-factor ratings of
                                                                             any magnitude when harmonic values are given.




                                                                        A7
                          DRY TYPE TRANSFORMERS

Drive Isolation Transformers (DIT)

Applications                                                          Features
Pioneer Electric drive isolation transformers are specifically        •   Anticipating that harmonics generated by the
designed to meet the requirements of AC and DC variable                   rectifiers will be present, the steel core is increased
speed drives or rectifier outputs. Pioneer Electric DIT type              to operate the transformer at a lower flux density to
transformers are manufactured and rated to match stan-                    prevent saturation.
dard motor horsepower and voltage ratings.                            •   Standard K-factor 4 rating. All K-factor ratings are
                                                                          available.
                                                                      •   Available in either high quality copper or aluminum
                                                                          windings.
                                                                      •   Braced to withstand the mechanical stresses of the
                                                                          current reversals and short circuits associated with
                                                                          SCR drives.
                                                                      •   Isolates the power source from the low frequency
                                                                          noise generated by SCR voltage spikes and transient
                                                                          feedback.
                                                                      •   Reduces short circuit currents.
                                                                      •   Lower than normal losses and temperature rise for
                                                                          greater life expectancy and overload capability.
                                                                      •   Full current neutral.
                                                                      •   Standard taps supplied, ± 5% FCAN and FCBN or
                                                                          ±2 x 2-1/2% FCAN and FCBN
                                                                      •   Thermal protectors (thermostats) for over temperature
                                                                          tripping are supplied standard.
                                                                      •   Class 220 insulation used throughout.
                                                                      •   CSA certified and UL listed.


Drive Recommended                            Catalog No.                                             Enclosure Dim. (in.)
                                                                                                                       Weight
Rating Transformer   Al Windings     Al Windings     Al Windings     Al Windings
 (H.P.) Size (DIT)                                                                                 Length Depth Height (lbs.)
                   575Δ - 460Y/266 460Δ - 460Y/266 460Δ - 230Y/133 230Δ - 230Y/133
   5         8         DA8J1P1        DA8H1P1         DA8H1S1         DA8C1S1                       15.75    16.00    21.00    135
   8        11        DA11J1P1        DA11H1P1        DA11H1S1        DA11C1S1                      15.75    16.00    21.00    150
  10        14        DA14J1P1        DA14H1P1        DA14H1S1        DA14C1S1                      20.50    16.00    21.00    182
  15        20        DA20J1P1        DA20H1P1        DA20H1S1        DA20C1S1                      20.50    20.75    26.25    247
  20        27        DA27J1P1        DA27H1P1        DA27H1S1        DA27C1S1                      20.50    20.75    26.25    275
  25        34        DA34J1P1        DA34H1P1        DA34H1S1        DA34C1S1                      20.50    20.75    26.25    310
  30        40        DA40J1P1        DA40H1P1        DA40H1S1        DA40C1S1                      20.50    20.75    26.25    336
  40        51        DA51J1P1        DA51H1P1        DA51H1S1        DA51C1S1                      24.50    22.00    31.50    455
  50        63        DA63J1P1        DA63H1P1        DA63H1S1        DA63C1S1                      24.50    22.00    31.50    485
  60        75        DA75J1P1        DA75H1P1        DA75H1S1        DA75C1S1                      24.50    22.00    31.50    565
  75        93        DA93J1P1        DA93H1P1        DA93H1S1        DA93C1S1                      30.75    29.75    31.75    755
  100      118       DA118J1P1       DA118H1P1       DA118H1S1       DA118C1S1                      30.75    29.75    31.75    820
  125      145       DA145J1P1       DA145H1P1       DA145H1S1       DA145C1S1                      30.75    29.75    31.75    890
  150      175       DA175J1P1       DA175H1P1       DA175H1S1       DA175C1S1                      40.00    37.00    45.75    1250
  200      220       DA220J1P1       DA220H1P1       DA220H1S1       DA220C1S1                      40.00    37.00    45.75    1470
  250      275       DA275J1P1       DA275H1P1       DA275H1S1       DA275C1S1                      40.00    37.00    45.75    1750
  300      330       DA330J1P1       DA330H1P1       DA330H1S1       DA330C1S1                      40.00    37.00    45.75    1990
  400      440       DA440J1P1       DA440H1P1       DA440H1S1       DA440C1S1                      46.00    40.00    64.50    2700


                                                                 A8
                             DRY TYPE TRANSFORMERS

Transformer Construction

Core
•   All Pioneer Electric three phase transformers utilize
    three legged cores
•   Only high quality grain oriented silicon steel is used
•   Core steel is precision cut and stacked for reduced
    noise and losses
•   Cores are clamped with heavy steel brackets


Coils
•   All coil windings are of high quality magnet wire
                                                                     Quality Assurance and Testing
    (copper or aluminum is available)                                All Pioneer Electric transformers are produced and tested
•   Class H 220°C insulation is utilized throughout the coil         in full compliance with the requirements of CSA Z299.3 and
    winding process                                                  ISO 9002 quality assurance programs. All Pioneer Electric
                                                                     transformers are tested as per the requirements of CSA
•   All Pioneer Electric transformers are designed with              standard C9 M1981.
    substantial cooling ducts for effective cooling
•   Every coil is impregnated and baked in polyester resin
    varnish                                                          Available Options
•   Standard ±5% or ±2x2.5% taps are provided on all                 •   Epoxy impregnated windings
    isolation type transformers                                      •   Epoxy cast coil designs
                                                                     •   50 Hz designs (or other frequencies when specified)
Insulation System                                                    •   All non-standard voltages
Pioneer Electric transformers are manufactured with                  •   Special configurations: delta-delta, delta or wye zig-zag
insulating materials complying with CSA Winding Insulation           •   Special impedance designs
System Class 220, which is the highest insulation level
recognized by the transformer industry.                              •   Temperature sensing devices
                                                                     •   Multiple windings
                                                                     •   Special tap arrangements
Enclosure
                                                                     •   Low audible noise designs
•   Standard enclosures are constructed of heavy gauge
                                                                     •   Tropicalization
    steel
                                                                     •   Special paint available upon request
•   Ventilation openings are arranged so that each
    standard enclosure is suitable for either NEMA or CSA            •   Anti-vibration pads: all transformers have standard
    type 1 or type 2 applications                                        internal vibration isolators; external pads are available
•   All enclosures are designed to minimize the possibility          •   Lightning and surge arrestors
    of accidental contact with live parts and to restrict the        •   Non-sinusoidal load designs
    access of falling particles into the transformer
                                                                     •   Optional tests are available
•   All Pioneer Electric standard enclosures are finished in
    ASA 61 grey powder coating                                       •   Enclosures: NEMA and CSA
                                                                         Type 2: ventilated,       indoor,   driproof    (Pioneer
                                                                         Standard)
Approval                                                                 Type 3: ventilated indoor or outdoor weather resistant
Pioneer Electric transformers are manufactured in                        Type 4: non-ventilated indoor or outdoor watertight
accordance with the requirements of CSA Standard C22.2                   (protection against splashing and hose directed water)
No 47. Pioneer Electric transformers are CSA certified and
UL listed.                                                               Type 12: non-ventilated indoor industrial dust-tight
                                                                         and driproof


                                                                A9
                       DRY TYPE TRANSFORMERS

Easy Selection Guide

Steps for selecting required                                          Line currents at rated voltage single phase
single phase transformer                                                KVA      120V     240V     480V     600V
1.   Determine primary or supply voltage                                  1      8.3       4.2      2.1      1.7
                                                                          2      16.7      8.3      4.2      3.3
2.   Determine secondary or load voltage
                                                                          3      25.0     12.5      6.3      5.0
3.   Verify single phase operation
                                                                          5      41.7     20.8     10.4      8.3
4.   Standard transformers are suitable for operation on a
                                                                         7.5     62.5     31.3     15.6      12.5
     60 Hz system. Refer to factory for other frequencies.
                                                                         10      83.3     41.7     20.8      16.7
5.   Determine KVA rating of load. Select a transformer hav-
                                                                         15     125.0     62.5     31.3      25.0
     ing a standard KVA rating equal to or greater than that
     required by the load.                                               25     208.0     104.0    52.1      41.7
                                                                        37.5    313.0     156.0    78.0      62.5
6.   Select autotransformer or double-wound isolation
     type. Formula for calculating single phase KVA:                     50     417.0     208.0    104.0     83.3
                 KVA = Volts x Amps                                      75     625.0     313.0    156.0    125.0
                            1000                                        100     833.0     417.0    208.0    167.0
                                                                        150     1250.0    625.0    313.0    250.0



        Motor H.P. up to              0.5          1           1.5       2        3        5        7.5      10
      Actual KVA Required             1.16        1.9          2.30     2.76     3.92     6.45     9.23     11.5
      Closest Standard KVA             2.0        3.0           3.0      3.0      5.0      7.5     10.0     15.0




Steps for selecting required                                          Line currents at rated voltage three phase
three phase transformer                                                 KVA      208V     240V     480V     600V
1.   Determine primary or supply voltage                                  3      8.3      7.2       3.6     2.9
                                                                          6      16.6     14.4      7.2     5.8
2.   Determine secondary or load voltage
                                                                          9      25.0     21.7     10.7     8.7
3.   Verify three phase operation
                                                                         15      41.7     36.1     18.1     14.5
4.   Standard transformers are suitable for operation on a
                                                                         30      83.4     72.3     36.1     28.9
     60 Hz system. Refer to factory for other frequencies.
                                                                         45      125      108      54.2     43.4
5.   Determine KVA rating of load. Select a transformer
                                                                         75      208      181      90.3     72.3
     having a standard KVA rating equal to or greater than
     that required by the load.                                         112.5    313      271      135      108
                                                                         150     417      361      181      145
6.   Select autotransformer or double-wound isolation
     type. Formula for calculating three phase KVA:                      225     625      542      271      217
                 KVA = Volts x Amps x 1.73                               300     834      723      361      289
                                1000



        Motor H.P. up to               2           3            5        7.5      10       15       20       25
      Actual KVA Required              2.4       3.42          5.73      8.4     10.3     15.0     19.8     24.4
      Closest Standard KVA             3.0        6.0           6.0      9.0     15.0     15.0     30.0     30.0




                                                          A10
                              DRY TYPE TRANSFORMERS

   Catalogue Numbering System

           B           -       C       -       30        -        J          -        M          /



                           Windings
                                                               Primary             Primary                   Special
                   A - Aluminum Windings                                                                   Requirement
                                                               Voltage             Voltage
                      C - Copper Windings                       Code                Code               Blank - No Requirement
                                                                                                          50 - 50 Cycles (Hz)
                                                                  A - 120             A - 120
                                                                                                       S - Electrostatic Shield
                                                                 A1 - 115            A1 - 115
                                              KVA                                                       E - Special Enclosure
                                                                 A2 - 110            A2 - 110
                                           Designation
                                                                  B - 208             B - 208        T - Special Temperature Rise
               Type                            25                 C - 240             C - 240             K - K-Factor Rated
                                               50                C1 - 230            C1 - 230          P - Special Paint Finish
  R - 3 Phase Autotransformers
                                               75                C2 - 220            C2 - 220
  M - 1 Phase Autotransformers                                                                   M - Special Mounting Brackets
                                              100                 D - 277             D - 277
B - 3 Phase Isolation (Distribution)                                                                     Z - Energy Efficient
                                              150                 E - 347             E - 347
S - 1 Phase Isolation (Distribution)          200                                                EP - Encapsulated Transformer
                                                                  F - 380             F - 380
    D - 3 Phase Drive Isolation               250                G – 416             G – 416
                                              350                G1 - 400            G1 - 400
                                              500                 H - 480             H - 480
                                              750                H1 - 460            H1 - 460
                                              1000               H2 - 440            H2 - 440
                                              1500                J - 600             J - 600
                                              2000               J1 - 575            J1 - 575
                                              3000               J2 - 550            J2 - 550
                                                              K - 120/240         K - 120/240
                                                             K1 - 115/230        K1 - 115/230
                                                             K2 - 110/220        K2 - 110/220
                                                               L - 240/480         L - 240/480
                                                              L1 - 230/460        L1 - 230/460
                                                              L2 - 220/440        L2 - 220/440
                                                             M - 208Y/120        M - 208Y/120
                                                             N - 416Y/240        N - 416Y/240
                                                             N1 - 400Y/231       N1 - 400Y/231
                                                             P - 480Y/277        P - 480Y/277
                                                             P1 - 460Y/266       P1 - 460Y/266
                                                             P2 - 440Y/254       P2 - 440Y/254
                                                             Q - 600Y/347        Q - 600Y/347
                                                             Q1 - 575Y/332       Q1 - 575Y/332
                                                             Q2 - 550Y/318       Q2 - 550Y/318
                                                             R - 380Y/220        R - 380Y/220
                                                              S - 240Y/139        S - 240Y/139
                                                             S1 - 230Y/133       S1 - 230Y/133
                                                             S2 - 220Y/127       S2 - 220Y/127
                                                               X - Special         X - Special

                                                                 A11

				
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