Technical Specifications
Supervises critical control circuits: circuit-breaker, disconnector, and signalling circuits
One relay per circuit; multiple relays can supervise circuit branches
Designed for the COMBIFLEX system
Supply voltage range: 20–60 V DC
Continuous monitoring to prevent undetected faults
Preset operate time prevents unwanted alarms during circuit-breaker operation
LED indicator on front panel with output relay for operation indication
Detects bad contact, contact welding, and auxiliary voltage failures
For rail- or surface-mounted version, refer to SPER 1B1 C4
Supervises important control circuits: circuit-breakers, disconnectors, and signalling circuits
One relay per circuit; multiple relays can supervise branched circuits
Designed for COMBIFLEX system
Supply voltage range: 40–265 V DC
Continuous monitoring to prevent undetected faults
Preset operate time avoids unwanted alarms during circuit-breaker operation
LED indicator on the front panel shows relay operation
Detects bad contact, contact welding, and auxiliary voltage failures
For rail- or surface-mounted options, see SPER 1B1 C4
Power supply: 24…48 V AC/DC
Application: Generator and feeder protection
Current inputs: 3 phase CT + dual residual CT
Voltage inputs: 4 VT (100/110 V)
Digital I/O: 24 DI, 21 DO
Communication ports: Front USB, Rear RS232, Rear RJ45
Communication protocols: IEC 61850 Ed.1/2, IEC 60870-5-101/103, Modbus RTU/TCP, DNP3, EtherNet/IP
Protection functions: Generator differential, overcurrent, earth fault, pole slip, loss of field, synchro-check, frequency and voltage protection
Mounting: Flush mounting, 30TE case
Display: LCD 128×128 with single-line diagram and ANSI symbols
Certifications: IEC/EN 60255-26
Operating temperature: -40 to +65 °C
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