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SECTION 26 43 13
SURGE PROTECTIVE DEVICES FOR LOW-VOLTAGE ELECTRICAL POWER
CIRCUITS
PART 1 - GENERAL
1.1 SCOPE
A. This section describes the materials and installation requirements for surge protective devices
(SPD) for the protection of all AC electrical circuits.
1.2 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B. Other sections that may relate to the work in this section include, but are not limited to, the
following:
1. [Section 26 24 13 - Switchboards
2. Section 26 24 16 – Panelboards
3. Section 26 24 19 – Motor Control Centers
4. Section 26 25 00 – Busway]
1.3 SUBMITTALS
A. Submit shop drawings and product information for approval and final documentation in the
quantities listed according to the Conditions of the Contract. All transmittals shall be identified
by customer name, customer location, and customer order number.
B. Submittals shall include UL 1449 Listing documentation verifying:
1. Short Circuit Current Rating (SCCR)
2. Voltage Protection Ratings (VPRs) for all modes
3. Maximum Continuous Operating Voltage rating (MCOV)
4. I-nominal rating (I-n)
5. Type 1 or Type 4 Device Listing
6. VPR, MCOV, I-n, and Type 1 information is posted at www.UL.com, under Certifications,
searching using UL Category Code: VZCA. SCCRs are posted in manufacturer’s UL
docs.
7. UL data and visual inspection takes precedence over manufacturer’s published
documentation.
C. Submittals shall include shop drawings including manufacturer installation instruction manual
and line drawings detailing dimensions and weight of enclosure, internal wiring diagram
illustrating all modes of protection in each type of SPD required, wiring diagram showing all field
connections and manufacturer’s recommended wire and breakers sizes (if required).
D. [An unencapsulated and complete surge protective devices shall be presented for visual
inspection by the consulting engineer, proprietary technology shall be demonstrated.
MOV type & quantity shall reflect kA ratings on cutsheets, verification of diagnostic
monitoring, thermal & overcurrent protection, etc.] [Deletable note: You can learn from
this. Reps will need to ensure the material inside their box, lines up with cutsheets. The
more they don‟t want to show you – the more you should want see it.]
1.4 RELATED STANDARDS
A. IEEE C62.41.1, IEEE Guide on the Surge Environment in Low-Voltage (1000 V and Less) AC
Power Circuits,
B. IEEE C62.41.2, IEEE Recommended Practice on Characterization of Surges in Low-Voltage
(1000 V and Less) AC Power Circuits,
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C. IEEE C62.45, IEEE Recommended Practice on Surge Testing for Equipment Connected to
Low-Voltage (1000 V and Less) AC Power Circuits.
D. FIPS Pub 94 (1983) - Guide on Electrical Power for ADP Installation
E. National Electric Code - Article 285
F. National Fire Protection Association - NFPA-20, NFPA-70, NFPA-75, NFPA-78
G. UL 1283 - Electromagnetic Interference Filters
H. cUL and UL 1449 - Second Edition Revision prior to September 29, 2009
I. UL 1449, Third Edition, on and after September 29, 2009 – Surge Protective Devices
1.5 LISTING REQUIREMENTS
The SPD industry recently revised UL 1449 Third Edition, 2008 NEC Art 285, NEMA LS-1 and
various other surge standards. UL 1449 Third Edition, effective 9/2009, includes extensive new
independent performance testing. This specification centers on UL 1449 Third Edition
certification to ensure comparable test evaluations and accessibility of UL’s website to verify spec
compliance.
A. SPD shall bear the UL Mark and shall be Listed to most recent editions of UL 1449 and UL
1283. “Manufactured in accordance with” is not equivalent to UL listing and does not meet
the intent of this specification.
B. SPD and performance parameters shall be posted at www.UL.com under Category Code:
VZCA. Products or parameters without posting at UL.com shall not be approved. (To access
UL Category Code VZCA click on Certifications in the left menu bar of UL’s home page.
Type VZCA into the Category Code search box and click Search.)
1.6 QUALITY ASSURANCE
A. Manufacturer Qualifications: Engage a firm with at least 5 years experience in manufacturing
transient voltage surge suppressors.
B. Manufacturer shall be ISO 9001 or 9002 certified.
C. The manufacturer of this equipment shall have produced similar electrical equipment for a
minimum period of five (10) years. When requested by the Engineer, an acceptable list of
installations with similar equipment shall be provided demonstrating compliance with this
requirement.
D. The SPD shall be compliant with the Restriction of Hazardous Substances (RoHS) Directive
2002/95/EC.
1.7 DELIVERY, STORAGE AND HANDLING
A. Handle and store equipment in accordance with manufacturer’s Installation and Maintenance
Manuals. One (1) copy of this document to be provided with the equipment at time of shipment.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. [Provide an internally mounted Transient Voltage Suppressor/Surge Protective Devices
(SPD) by Siemens Energy and Automation, Inc. (Siemens) or pre-approved equal by:
1. SIEMENS.
2. .]
2.2 ELECTRICAL DISTRIBUTION EQUIPMENT [Select the sections, A, B and/or C below, which
applies to your job]
A. [[Service Entrance]
1. For main disconnect line side installations, SPD shall be UL labeled as Type 1
(verifiable at UL.com), intended for use without need for external or supplemental
overcurrent controls. Every suppression component of every mode, including N-
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G, shall be protected by internal overcurrent and thermal overtemperature
controls. [Deletable note: Delete the following section if SPD will be included as
part of UL 96A certification, which requires Type SPDs installed at the incoming
service.]
2. For main disconnect load side installations, SPD shall be UL labeled as Type 4
(verifiable at UL.com), intended for use without need for external or supplemental
overcurrent controls. Every suppression component of every mode, including N-
G, shall be protected by internal overcurrent and thermal overtemperature
controls. SPDs relying upon external or supplementary installed safety
disconnectors do not meet the intent of this specification. [Deletable note: Delete
the above section if UL 96A certification or line side installation is not required.]
3. SPD shall be installed by and shipped from the electrical distribution equipment
manufacturer‟s factory.
4. Type 1 SPD shall be UL labeled with 20kA Inominal (I-n) (verifiable at UL.com) for
compliance to UL 96A Lightning Protection Master Label and NFPA 780. [Delete if
line side installation or UL 96A certification is not required.]
5. Type 4 SPD shall be UL labeled with 20kA Inominal (I-n) (verifiable at UL.com).
[Delete if line side installation or UL 96A certification is required.]
6. SPD shall be UL labeled with 200kA Short Circuit Current Rating (SCCR). Fuse
ratings shall not be considered in lieu of demonstrated withstand testing of SPD,
per NEC 285.6. [Deletable note: Lower SCCR will allow lower end products to bid.]
7. Standard 7 Mode Protection paths: SPD shall provide surge current paths for all
modes of protection: L-N, L-G, and N-G for Wye systems; L-L, L-G in Delta and
impedance grounded Wye systems. [Delete: If “true 10-mode” protection is
preferred, then include discrete L-L MOVs.]
8. True 10 Mode Protection paths: SPD shall provide surge current paths for all
modes of protection: L-N, L-G, L-L, and N-G for Wye systems; L-L, L-G in Delta and
impedance grounded Wye systems. [Deletable note: 10 Mode protection maybe
selected for projects where discrete L-L MOV protection is preferred. For most
projects this feature is not required.]
9. SPD shall be connected to the buss of the distribution equipment with an
appropriately sized 200kA SCCR rated disconnect.
10. SPD shall meet or exceed the following criteria:
a. Maximum 7-Mode surge current capability shall be [300kA] [400kA] [500kA]
per phase. [Note: Delete unselected kA ratings.]
b. Maximum 10-Mode surge current capability shall be [300kA] [450kA] per
phase. [Note: Delete unselected kA ratings.]
c. UL 1449 - Third Edition Revision; effective September 29, 2009, where
applicable either Type 1 or Type 4 Voltage Protection Ratings shall not
exceed the following:
VOLTAGE L-N L-G N-G L-L MCOV
208Y/120 800V 800V 800V 1200V 150V
480Y/277 1200V 1200V 1200V 2000V 320V
11. UL 1449 Listed Maximum Continuous Operating Voltage (MCOV) (verifiable at
UL.com):
System Voltage Allowable System Voltage Fluctuation (%) MCOV
208Y/120 25% 150V
480Y/277 15% 320V
12. SPD shall have a minimum UL 1283 listed EMI/RFI filter with minimum attenuation
of - 50dB at 100 kHz.
13. [Suppression components shall be heavy duty „large block‟ MOVs, each exceeding
30mm diameter.]
14. [SPD shall include a serviceable, replaceable module (excluding Branch).]
[Deletable note: Delete or adjust as appropriate.]
15. SPD shall be equipped with onboard visual and audible diagnostic monitoring.
Indicator lights shall provide full time visual diagnostic monitoring of the
July 26, 2009 [Project Name]
Surge Protective Devices for Low-Voltage Electrical Power Circuits
26 43 13-3
operational status of each phase of the surge current diversion module. A red
indicator light will indicate loss of suppression capability. A green indicator light
will indicate fully operational suppression capability. Audible diagnostic
monitoring shall be by way of audible alarm. This alarm shall activate upon a fault
condition. An alarm on/off switch shall be provided to silence the alarm. An alarm
push to test switch shall be provided. The SPD diagnostic monitoring devices shall
be mounted on the front of the switchboard or panelboard enclosure. The
diagnostic monitoring circuits shall continually monitor the operational status of
the surge current diversion module. A diagnostic system press to test switch shall
be provided. A set of Form C dry contacts shall be provided for remote
annunciation. No other test equipment shall be required for SPD monitoring or
testing before or after installation.
16. SPD shall have a response time no greater than 1/2 nanosecond.
17. SPD shall have a warranty for a period of ten years, incorporating unlimited
replacements of suppressor parts if they are destroyed by transients during the
warranty period. Warranty will be the responsibility of the electrical distribution
equipment manufacturer.
18. SPD shall be equipped with the following optional items:
a. Transient event surge counter shall be located on the front cover of the
panelboard. The counter shall be equipped with a manual reset and a battery
to retain memory upon loss of AC power.]
B. [[Distribution Panel] [Motor Control Center] [Busway]
1. SPD shall be UL labeled as Type 4 (verifiable at UL.com), intended for use without
need for external or supplemental overcurrent controls. Every suppression
component of every mode, including N-G, shall be protected by internal
overcurrent and thermal overtemperature controls. SPDs relying upon external or
supplementary installed safety disconnectors do not meet the intent of this
specification. [Deletable note: Delete the above section if UL 96A certification or
line side installation is not required.]
2. SPD shall be installed by and shipped from the electrical distribution equipment
manufacturer‟s factory.
3. Type 4 SPD shall be UL labeled with 20kA Inominal (I-n) (verifiable at UL.com).
4. SPD shall be UL labeled with 200kA Short Circuit Current Rating (SCCR). Fuse
ratings shall not be considered in lieu of demonstrated withstand testing of SPD,
per NEC 285.6. [Deletable note: Lower SCCR will allow lower end products to bid.]
5. Standard 7 Mode Protection paths: SPD shall provide surge current paths for all
modes of protection: L-N, L-G, and N-G for Wye systems; L-L, L-G in Delta and
impedance grounded Wye systems. [Delete: If “true 10-mode” protection is
preferred, then include discrete L-L MOVs.]
6. True 10 Mode Protection paths: SPD shall provide surge current paths for all
modes of protection: L-N, L-G, L-L, and N-G for Wye systems; L-L, L-G in Delta and
impedance grounded Wye systems. [Deletable note: 10 Mode protection maybe
selected for projects where discrete L-L MOV protection is preferred. For most
projects this feature is not required.]
7. SPD shall meet or exceed the following criteria:
a. Maximum 7-Mode surge current capability shall be [100kA] [200kA] per
phase. [Note: Delete unselected kA ratings.]
b. Maximum 10-Mode surge current capability shall be [150kA] [300kA] per
phase. [Note: Delete unselected kA ratings.]
c. UL 1449 - Third Edition Revision; effective September 29, 2009, where
applicable either Type 1 or Type 4 Voltage Protection Ratings shall not
exceed the following:
VOLTAGE L-N L-G N-G L-L MCOV
208Y/120 800V 800V 800V 1200V 150V
480Y/277 1200V 1200V 1200V 2000V 320V
July 26, 2009 [Project Name]
Surge Protective Devices for Low-Voltage Electrical Power Circuits
26 43 13-4
8. UL 1449 Listed Maximum Continuous Operating Voltage (MCOV) (verifiable at
UL.com):
System Voltage Allowable System Voltage Fluctuation (%) MCOV
208Y/120 25% 150V
480Y/277 15% 320V
9. SPD shall have a minimum UL 1283 listed EMI/RFI filter with minimum attenuation
of - 50dB at 100 kHz.
10. Suppression components shall be heavy duty „large block‟ MOVs, each exceeding
30mm diameter.]
11. [SPD shall include a serviceable, replaceable module (excluding Branch).]
[Deletable note: Delete or adjust as appropriate.]
12. SPD shall be equipped with onboard visual and audible diagnostic monitoring.
Indicator lights shall provide full time visual diagnostic monitoring of the
operational status of each phase of the surge current diversion module. A red
indicator light will indicate loss of suppression capability. A green indicator light
will indicate fully operational suppression capability. Audible diagnostic
monitoring shall be by way of audible alarm. This alarm shall activate upon a fault
condition. An alarm on/off switch shall be provided to silence the alarm. An alarm
push to test switch shall be provided. The SPD diagnostic monitoring devices shall
be mounted on the front of the panelboard enclosure. The diagnostic monitoring
circuits shall continually monitor the operational status of the surge current
diversion module. A diagnostic system press to test switch shall be provided. A
set of Form C dry contacts shall be provided for remote annunciation. No other
test equipment shall be required for SPD monitoring or testing before or after
installation.
13. SPD shall have a response time no greater than 1/2 nanosecond for any of the
individual protection modes.
14. SPD shall have a warranty for a period of ten years, incorporating unlimited
replacements of suppressor parts if they are destroyed by transients during the
warranty period. Warranty will be the responsibility of the electrical distribution
equipment manufacturer.
15. SPD shall be equipped with the following optional items:
a. Transient event surge counter shall be located on the front cover of the
panelboard. The counter shall be equipped with a manual reset and a battery
to retain memory upon loss of AC power.]
C. [[Branch Panels]
1. The panelboard shall be UL 67 Listed and the SPD device shall be UL 1449 Third
Edition Type 4 Listed.
2. The unit shall be top or bottom feed according to requirements. A circuit directory
shall be located inside the door.
3. SPD shall meet or exceed the following criteria:
a. Maximum 7-Mode surge current capability shall be [100kA] [200kA] per
phase. [Note: Delete unselected kA ratings.]
b. Maximum 10-Mode surge current capability shall be [150kA] [300kA] per
phase. [Note: Delete unselected kA ratings.]
c. UL 1449 - Third Edition Revision; effective September 29, 2009, where
applicable either Type 1 or Type 4 Voltage Protection Ratings shall not
exceed the following:
VOLTAGE L-N L-G N-G L-L MCOV
208Y/120 800V 800V 800V 1200V 150V
480Y/277 1200V 1200V 1200V 2000V 320V
4. UL 1449 Listed Maximum Continuous Operating Voltage (MCOV) (verifiable at
UL.com):
System Voltage Allowable System Voltage Fluctuation (%) MCOV
208Y/120 25% 150V
July 26, 2009 [Project Name]
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26 43 13-5
480Y/277 15% 320V
5. SPD shall have a minimum UL 1283 listed EMI/RFI filter with minimum attenuation
of - 50dB at 100 kHz.
6. Suppression components shall be heavy duty „large block‟ MOVs, each exceeding
30mm diameter.]
7. [SPD shall include a serviceable, replaceable module (excluding Branch).]
[Deletable note: Delete or adjust as appropriate.]
8. SPD shall be equipped with onboard visual and audible diagnostic monitoring.
Indicator lights shall provide full time visual diagnostic monitoring of the
operational status of each phase of the surge current diversion module. A red
indicator light will indicate loss of suppression capability. A green indicator light
will indicate fully operational suppression capability. Audible diagnostic
monitoring shall be by way of audible alarm. This alarm shall activate upon a fault
condition. An alarm on/off switch shall be provided to silence the alarm. An alarm
push to test switch shall be provided. The SPD diagnostic monitoring devices shall
be mounted on the front of the panelboard enclosure. The diagnostic monitoring
circuits shall continually monitor the operational status of the surge current
diversion module. A diagnostic system press to test switch shall be provided. A
set of Form C dry contacts shall be provided for remote annunciation. No other
test equipment shall be required for SPD monitoring or testing before or after
installation.
9. SPD shall have a response time no greater than 1/2 nanosecond for any of the
individual protection modes.
10. SPD shall have a warranty for a period of ten years, incorporating unlimited
replacements of suppressor parts if they are destroyed by transients during the
warranty period. Warranty will be the responsibility of the electrical distribution
equipment manufacturer.
11. SPD shall be equipped with the following optional items:
a. Transient event surge counter shall be located on the front cover of the
panelboard. The counter shall be equipped with a manual reset and a battery
to retain memory upon loss of AC power.
12. The unit shall have removable interior.
13. The main bus shall be [copper] [aluminum] and rated for the load current required.
14. The unit shall include a 200% rated neutral assembly with copper neutral bus.
15. The unit shall be provided with a safety ground bus.
16. The field connections to the panelboard shall be main lug or main breaker.
17. The unit shall be constructed with flush or surface mounted trim and shall be in a
NEMA Type 1 enclosure.]
PART 3 - EXECUTION
3.1 INSTALLATION
A. Install per manufacturer’s recommendations and contract documents.
3.2 ADJUSTMENTS AND CLEANING
A. Remove debris from installation site and wipe dust and dirt from all components.
B. Repaint marred and scratched surfaces with touch up paint to match original finish.
3.3 TESTING
A. Check tightness of all accessible mechanical and electrical connections to assure they are
torqued to the minimum acceptable manufacture’s recommendations.
B. Check all installed panels for proper grounding, fastening and alignment.
3.4 WARRANTY
July 26, 2009 [Project Name]
Surge Protective Devices for Low-Voltage Electrical Power Circuits
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A. Equipment manufacturer warrants that all goods supplied are free of non-conformities in
workmanship and materials for ten (10) years from date of shipment.
END OF SECTION
July 26, 2009 [Project Name]
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