Originally Posted by
Kalbi_Rob
Is there somewhere you read 32F? Only thing I have read is the following:
WARNING:
Three-phase pad-mounted transformers use
conventional transformer oil, R-Temp fluid, or
Envirotemp™ FR3™ fluid for an insulating liquid.When
the insulating liquid temperature is less than -20°C
(-4°F) for conventional transformer oil, less than 0°C
(32°F) for R-Temp fluid or less than -10°C (14°F) for
Envirotemp™ FR3™ fluid, viscosity is reduced, which
may reduce make and break capabilities of loadbreak
devices. Below these temperatures, under-oil loadbreak
accessories should not be used to make or break a
load. Instead, de-energize transformer from a remote
upstream source before operating under-oil loadbreak
devices.