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
Model: 7SR1004 (Argus series – voltage & current based)
Current Inputs: 4
Voltage Inputs: 3
Binary Inputs: 9
Binary Outputs: 6
LEDs: 10
Auxiliary Voltage: 60–240 V AC/DC
CT Input: 1A / 5A (site-selectable)
Communication: Front USB port, Rear RS485 (IEC 60870-5-103 / Modbus RTU / DNP 3.0)
Case Type: 4U high, size 4, non-draw-out
Protection Elements: 4 independent overcurrent elements (50-1 to 50-4) with directional control and transient-free operation
Frequency Protection: 4 under/over frequency elements with Ph-Ph or Ph-N voltage modes
Protection Functions: 46BC, 46NPS, 49, 50, 50N/G, 51, 51N/G, 51C, 50BF, 51SEF, 81HBL2, 50SEF
Supervision: Trip Circuit (74TC), Total Harmonic Distortion (81THD)
Control: Lockout (86), CB Control
Compliance: IEC 60255
