LumaSense Presents Survey Results on Dissolved Gas Analysis (DGA)
Monitoring for Transformers
LumaSense Technologies, Inc. has published results of its recently completed survey on
dissolved gas analysis (DGA) monitoring for transformers. LumaSense's SmartDGA for DGA
monitoring for transformers represents the power industry's lowest total cost of ownership.
Online PR News – 22-November-2012 dissolved gas analysis utilities become more sophisticated in
transformer monitoring and changes in total cost of ownership
LumaSense Technologies, Inc. has published results of its recently completed survey on dissolved gas
analysis (DGA) monitoring for transformers . The survey suggests the electrical power industry is
becoming more sophisticated at monitoring the performance of transformers, but still lacks cost effective
alternatives to allow for a wide scale deployment of this monitoring. The targeted survey conducted from
March-June 2012 by LumaSense Technologies, Inc. polled a small sample of power industry professionals
from around the world (cf. LumaSense's LTC / Transformer full survey results:
Among the insights of LumaSense's survey on dissolved gas analysis monitoring for transformers (October
LumaSense's SmartDGA solution for dissolved gas analysis monitoring for
transformers represents the power industry's lowest total cost of ownership with up to
80 percent reductions, which allows utilities to reduce their asset monitoring budgets
and capital expenditures while achieving widespread deployment across their
1. Dissolved-gas analysis (DGA) is becoming a preferred and vital part of utilities' asset management
strategies as many of them seek to protect and extend the lives of their aging transformer fleets. Nearly 95
percent of respondents said online DGA is important to their monitoring programs.
2. Utilities and transformer makers are transitioning to technology that measures increased types of gases,
which indicates the industry is taking steps toward more-sophisticated monitoring philosophies. For
instance, most respondents (nearly 70 percent) said they are driving toward multiple-gas analysis of DGA
measuring three to nine gases, as opposed to hydrogen only or a total combustible-gas (TCG) reading.
Hydrogen and acetylene were selected as the two most-important gases/readings when reviewing DGA
results for transformer main tanks.
3. Utilities still lack cost effective alternatives needed to monitor the performance of their transformer fleets:
Most respondents indicated that at least 75 percent of transformers in their fleets are not supported by
online DGA monitoring , and 65 percent of respondents said they sample transformer oil for lab analysis -
one of the more-traditional methods for transformer monitoring - only once or twice a year. Price, onsite
service and support and technology used are the three most important factors when considering which
online DGA technology to use.
"Many things can go wrong in a year, which reinforces why more utilities are looking for online monitoring
solutions versus their typical annual lab analysis," said Brett Sargent, LumaSense Vice President and
General Manager, in response to the data regarding oil sampling practices. "Transformers are becoming
more stressed and are driven harder today. When you combine that with the fact that many transformers
are more than 35 years old, it is plain to see why it is so critical to install more online monitoring systems."
LumaSense conducted the survey in support of the introduction of its SmartDGA line of online DGA
products for load tap changers (LTCs) and transformers earlier this year (
http://www.lumasenseinc.com/EN/products/gas-monitoring/dga-for-transformers/ ). Survey
respondents confirmed that transformer DGA, winding hot spot and LTC DGA were considered the three
most important elements to monitor on transformers. All three elements can be measured using LumaSense
Designed to help electric utilities augment condition-based maintenance for transformer and LTC fleets, the
SmartDGA line includes three instruments: SmartDGA Gauge, SmartDGA Guard and SmartDGA Guide.
The Gauge is designed to monitor dissolved gas within transformer LTCs and is the only dedicated LTC
dissolved gas analysis monitor on the market. The Guard and Guide are designed for online DGA
monitoring of transformers. The entire line uses industry proven non-dispersive infrared (NDIR) technology
to track gases, and is up to 50-percent less expensive than comparable solutions.
SmartDGA Guard e. g. provides reliable early warning diagnostics by dissolved gas analysis and monitoring
to prevent transformer failures and can be installed in a matter of a few hours as opposed to days with
present systems and can cost 50-percent less than other monitors. The multi-gas instrument measures
hydrogen (H2), acetylene (C2H2) and carbon monoxide (CO) for incipient fault detection, as well as
moisture. SmartDGA Guard requires no routine maintenance or scheduled calibration, can be mounted
single valve or to two valves, and is available with fully integrated communications for Smart Grid
LumaSense's SmartDGA solution for dissolved gas analysis monitoring for transformers also represents the
power industry's lowest total cost of ownership with up to 80 percent reductions, which allows utilities to
reduce their asset monitoring budgets and capital expenditures while achieving widespread deployment
across their transformer fleets ( http://www.lumasenseinc.com/EN/products/gas-monitoring/dga-for-
LumaSenseInc.com: Dissolved Gas Analysis (DGA) Monitoring for Transformers
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