Chapter 1 Information Meter Highlights
Branch Feeder Monitor 136_Installation Operation and Manual 8
Chapter 1 Information
The BFM136 is a 3-phase, multi-channel, multi-function energy meter suitable for use in single-phase and
multi-phase electrical networks.
1.1 Meter Highlights
• Multi-channel submetering – up to 36 single-phase or 18 two-phase or 12 three-phase submeters
in a single device. Any combination of single-, two-, and three-phase consumers can be chosen
up to a total of 36 current inputs.
• Automatic totalization energy from different sub-consumers
1.2 Features
• Calibrated to meet Class 0.5S active energy and Class 1 reactive energy meter accuracy
• 3-phase/2-phase/single-phase meters (true RMS, volts, amps, power, power factor, neutral
current)
• Ampere/Volt demand meter
• Time-of-Use, 4 energy/demand registers x 6 tariffs
, 4 seasons x 4 types of days, 8 tariff changes
per day, easy programmable tariff schedule
• Import/export energy and power demands
• Automatic 120–day daily profile for import/export
energy and maximum demand readings (total
and tariff registers) separate for each submeter
• Event recorder for logging internal diagnostic events and setpoints operations
• Data recorders; programmable periodical data logs separate for each submeter
• Embedded programmable controller (4 control setpoints, programmable thresholds and delays)
separate for each submeter
• Easy to read 2-row x 16 characters LCD display with backlight (BFM136 only)
• 50/60 Hz operation
• Internal clock, keeping the clock running over one week without external power
• HACS with overvoltage protection diodes to avoid any damage while disconnecting the primary
current sensor
• Standard RS-485 serial port
• Optional second communication port. Communication options available:
- RS-23
- RS-422/485
- 56K Dial-up modem
- Ethernet 10/100BaseT
- Wireless RF modem (unlicensed 907-922 MHz)
• Modbus RTU and Modbus ASCII communication protocols
• Easy field upgrading device firmware through any communication port
From Firmware version 18.4.1
From Firmware version 18.5.1