Specifications

34
Functions
and characteristics
COM communications option 0
DB101928
Communications option for Compact NS and Masterpact
NT/NW
The COM communications option is compatible with all the source-changeover
systems for Compact NS100 to 1600 and Masterpact NT/NW circuit breakers and
switch-disconnectors.
It can be used to remote status information. It may not be used to operate the circuit
breakers (only possible locally on the front of the UA150 controller).
Masterpact and Compact NS630b to 1600 circuit breakers and switch-disconnectors
are compatible with the Modbus ECO COM option.
Depending on the trip units or control units used, the COM option may also be used
to analyse distribution-system parameters required for the operating and
maintenance assistance.
Circuit breaker communication
Switch-
disconnector
Circuit
breaker
Compact NS100/1600 status indications
ON / OFF bb
Fault trip b
Connected / disconnected position bb
Masterpact NT/NW status indications
ON / OFF bb
Fault trip b
Connected / disconnected position bb
Operating and maintenance assistance
STR53UE trip unit for Compact NS400/630
Current readings
Phase and neutral rms currents b
Current on the most heavily loaded phase b
Alarm readings
Overload b
Tripping cause (overload, short-circuit, etc.) b
Positions of setting dials b
Operating and maintenance aids Digipact Modbus
Measurement
Current APHAPH
Voltages, frequency, power, etc. P H P H
Power quality: fundamental, harmonics H
Programming of demand metering P H
Fault readings
Type of fault A P H
Interrupted current P H
Waveform capture
On faults H
On demand or programmed H
Histories and logs
Trip history PH
Alarm history PH
Event logs PH
Indicators
Counter operation APHAPH
Contact wear PH
Maintenance register P H
Note:
see the description of the Micrologic control units for further details on protection and alarms,
measurements, waveform capture, histories, logs and maintenance indicators.