Technical Specifications
Numerical relay for capacitor bank protection
Supports Single Star, Double Star, Delta, and H configurations
3-pole overcurrent + 1-pole unbalance or 1-pole overcurrent + 3-pole unbalance options
Optional voltage inputs and overvoltage protection via current integration
Re-energization blocking feature for safe operation
Programmable inverse voltage, current, and thermal curves
Comprehensive protection functions: overcurrent, unbalance, earth fault, under/over voltage, over/under frequency, negative phase sequence, thermal overload, REF, and harmonic analysis
Communication and SCADA integration (IEC protocols)
Self-monitoring and multiple setting groups
Power supply: 48–230 V AC/DC
Inputs: 3 × CT (1/5 A), 1 × residual CT, 4 × VT (100/110 V)
Digital Inputs: 16
Digital Outputs: 8 + 1 watchdog
Communication: 2 × RJ45 (rear), USB (front)
Protocols: IEC 61850 Ed.1/2, IEC 60870-5-101, DNP3 TCP, Modbus TCP, EtherNet/IP
Protection: 50/51, 67, 50N/51N, 67N, 67NI, 51C, 46, 37P, 79, 27/59, 25, 50BF, 86, etc.
Display: LCD 128×64 with SLD
Dimensions: 169.5 × 170 × 205 mm
Network redundancy: RSTP, PRP
IP Rating: IP54
Operating temperature: –40…65 °C
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Range of Product: PowerLogic P3
Product Type: Protection relay
Application: Motor
Device Mounting: Flush
Power Supply: 24…48 V DC
Measuring Inputs:
6 × 1/5 A CT phase current
2 × 5/1 A CT residual current
1 × 1/0.2 A CT residual current
4 × 100/110 V VT voltage
Sensors: 0 temperature, 0 arc
Digital Inputs (DI): 12
Digital Outputs (DO): 14 + 1 watchdog
Analog Inputs/Outputs: 0
Communication Ports: Front USB 1, Rear RJ45 1, Rear RS485 1
Communication Protocols: IEC 61850 ed.1 & 2, IEC 60870-5-101/103, DNP3/DNP3 TCP, Modbus TCP/RTU, EtherNet/IP, DeviceNet, SPAbus
Cybersecurity: Password protection, port hardening
Protection Functions: Synchro-check, undervoltage, directional underpower, phase undercurrent, negative sequence overcurrent/overvoltage, excessive start time/locked rotor, thermal overload, earth fault overcurrent, phase overcurrent, breaker failure, SOTF, capacitor unbalance/overvoltage, overvoltage, stator earth fault, restricted earth fault, motor restart inhibition, directional phase/earth overcurrent, H2/H5 detection, underfrequency, frequency rate change, lockout relay, machine differential, programmable stages & curve, cold load pick-up
Relay Type: Differential current relay
Measurement Functions: 3-phase, zero/positive/negative sequence current & voltage, short circuit fault reactance, fault location, earth fault reactance, frequency, active/reactive/apparent power & energy, cos φ, tan φ, power factor & angle, phasor diagrams, harmonics 2nd & 15th with THD, CB wear monitoring, voltage interruption
Control Functions: Switchgear control & monitoring, programmable interlocking, local/remote control, 2 function keys, Easergy SmartApp, Web-server
Monitoring Functions: Trip circuit supervision, breaker monitoring, self-monitoring, event/disturbance recording, CT/VT supervision
Connections: Screw removable (DI/DO), ring lug fixed (CT), pin removable (VT)
Display & Keys: LCD 128x128 (SLD & ANSI), 2 customizable keys, 2 LEDs + 16 program
Power supply: 48–250 V DC / 100–230 V AC
Measuring inputs: 3 phase CT, 1 neutral CT, 1 sensitive neutral CT, 4 VT
Digital I/O: 16 DI, 12 DO
Protection functions: Overcurrent, directional protection, earth fault, voltage & frequency protection, breaker failure, auto-reclose
Communication: Ethernet RSTP (2×RJ45), IEC 61850, Modbus TCP, DNP3
Cybersecurity: IEC 62443-4-2 SL1 certified
Mounting: Withdrawable, flush mounted
Protection degree: IP54
