Appendix A Technical Specifications Environmental Conditions
Branch Feeder Monitor 136_Installation Operation and Manual 61
Appendix A Technical Specifications
A.1 Environmental Conditions
Indoor use only
BFM is intended for operation in environment where normally only non-conductive pollution occurs as
defined for pollution degree 2 (UL61010, 3.6.6.2)
Operating Temperature: -40°C to 70°C (-40°F to 158°F)
Storage Temperature: -40°C to 80°C (-40°F to 176°F)
Humidity: 0 to 95% non-condensing
Altitude: 2,000m max
A.2 Input Ratings
4 wires, 3 phases+ neutral
(115) 88-136 VAC to
(230/400 – 277/480) 176-320 VAC
Maximum Line to Neutral voltage
Maximum Line to Line voltage
AC Voltage for Measurement and Power supply
consumption
Maximal apparent power consumed from power line <
18VA
4 kV RMS, 60Hz, 1 min
Leakage current < 0.005A per circuit
Impulse 1.2/50μS 6 kV, 12 KV per NMI M6-1
Maximum measurable current Imax (In=50A)
Maximum overcurrent for 0.5 cycle of fundamental
frequency
2 Rows, 16 digits in each
-20°C to 70°C (-4°F to 158°F)
Non-volatile Memory storage life
RTC storage upon loss of power