Inputs: 4xI
Protection Functions: Overall differential protection (87/50G), Restricted Earth Fault (87REF), Earth Fault (50G)
Supervision Functions: CT Supervision (CT50), Fault Clearance Monitor (87/50BF)
Monitoring Functions: Instrumentation
Additional Functions: IEC 61850 option, Eight setting groups, Password protection, Self-monitoring, Fault/event/waveform records
Housings: E6 or E8
Applications: Distribution networks, industrial plants, and high-impedance protection systems
Type: Numerical overcurrent and earth fault relay
Models: 7SR1002, 7SR1003, 7SR1004, 7SR1005
Protection functions: Overcurrent (50/51), Earth Fault (50N/51N), Thermal Overload (49), Broken Conductor (46BC), Negative Phase Sequence (46NPS), Sensitive Earth Fault (50SEF/51SEF), CB Fail (50BF), Cold Load Pickup (51C), etc.
Supervision: Trip Circuit Supervision (74TC), Total Harmonic Distortion (81THD)
Control: Lockout (86), CB Control
Power Supply: Universal AC/DC supply
CT Input: 1A / 5A site-selectable
Communication: USB (front), RS485 MODBUS RTU / IEC 103 (rear)
I/O: Up to 6 Digital Inputs and 6 Digital Outputs
Case: Size 4, 4U high, non-draw-out
Applications: Distribution and industrial protection, motor and voltage-based protection
Standard: IEC 60255 compliant
