Envirotemp FR3 Fluid Offers Enhanced Fire Protection

Envirotemp FR3 fluid has a fire point of approximately 360°C, well above the minimum of 300°C required for high fire point fliod classifications. Its flash point is (approximately 330°C id higher than the fire point of most other ignition resistant dielectric fluids in use today (figure 2).

In laboratory and full-scal ignition tests, Envirotemp FR3 fluid has demonstrated greater fire resistance than other dielectric fluid types. Based on large-scale arc ignition testing, FM Global concluded that the probability of a pool fire evolving from Envirotemp FR3 fluid was so low that heat release rate need not be determined or considered for FM Global approval.

Based on large scale arc igintion and hot metal ignition tests, FM global recognizes Envirotemp FR3 fluid as an equivalent safegaurd to space separation, fire barriers, and fire supperssion systems for most installations.

FM Global Recognizes Envirotemp FR3 fluid as a component of Approved transformers per FM Global Standard 3990. Whne used in transformers containing 10,000 gallons of fluid or less, transformers separation distance to buildings and other equipment may be up to 1/10th the distance required for mineral oil filled transformers, without fire walls or deluge systems.

occupational Safety & Health Administration (OSHA) recognizes this FM Global standard as fitting the definition of a Listed and Labled Product per NEC Section 110-3(b). The standard permits Envirotemp FR3 fluid-filled transformer to be installed indoors, typically without sprinklers or vaults, with a minimum clearance to walls of just 3 feet (0.9M).

UL Standard 340 compares the fire hazard ratings of various fluids. Figure 3 shows the favorable rating assigned to Envirotemp FR3 fluid.

© 2010 Cooper Power Systems or its affiliates.
Envirotemp®, FR3® , and the color green® are registered trademarks of Cooper Power
Systems or its affiliates.
IEEE Standard C57.104-1991™, IEEE Standard C57.91™ and IEEE Standard C2-1997™ are
trademarks of the Institute of Electrical and Electronics Engineers, Inc.
UL® is a registered trademark of the Underwriters Laboratories Inc.
NEC® is a registered trademark of the National Electrical Code.
ANSI® is a registered trademark of the American National Standards Institute
FM Global® is a registered trademark of Factory Mutual Insurance Company
BioPreferredSM is a service mark of the The United States Department of Agriculture