Schneider P3 Protective Relay Model 52055
The REL52055 is a universal protection relay, perfectly suited for buildings, industry, utilities, and large industrial processes. It is simple, reliable, safe, and easy-to-use thanks to the user interface display. It can be powered from a 48–230 V AC/DC network and includes features such as an automatic recloser, switch ON to fault (SOTF), inrush protection, and lockout
Technical Specifications
Range of Product: PowerLogic P3
Product Type: Protection Relay
Application: Universal
Reference: P3U30-5AAA2BBAB
Mounting Case Size: 30TE
Device Mounting: Flush
Power Supply: 48–230 V AC/DC
Measuring Inputs:
3 × 1/5 A CT Phase Current
1 × 1/5 A CT Residual Current
4 × 100/110 V VT Voltage
Sensors: 0 temperature, 0 arc
Digital Inputs (DI): 16
Digital Outputs (DO): 8 + 1 watchdog
Communication Ports: Front USB 1, Rear RS485 1
Protocols: IEC 60870-5-101, IEC 60870-5-103, DNP3, Modbus RTU, DeviceNet, SPAbus
Cybersecurity: Password protection, port hardening
Protection Functions: Phase overcurrent, directional overcurrent, earth fault overcurrent, directional earth fault, transient earth fault, capacitor bank unbalance, broken conductor, cold load pick-up, H2/H5 detection, breaker failure, SOTF, directional active underpower, fault locator, recloser, phase undercurrent, excessive start time, motor restart inhibition, capacitor overvoltage, negative sequence overcurrent, overvoltage, undervoltage, positive sequence undervoltage, earth fault overvoltage, underfrequency, rate of change of frequency, synchro-check, lockout relay, CT supervision, VT supervision, programmable stages, programmable curve.
Measurement Functions: 3-phase current, zero/positive/negative sequence current, voltage phase to earth/phase, voltage zero/positive/negative sequence, current/voltage ratios, short circuit reactance, fault location, earth fault reactance, frequency, active/reactive/apparent power and energy, cos φ, tan φ, power angle, power factor, voltage/current phasor diagrams, harmonics 2nd & 15th with THD, CB wear monitoring, voltage interruption.
Control Functions: Switchgear control and monitoring, programmable switchgear interlocking, local/remote control, 2 function keys, Easergy SmartApp, web server.
Connections: Screw removable (DI/DO), ring lugs removable (CT), pin removable (VT)
Display: LCD 128x64 pixels (single line diagram & ANSI), 2 customizable keys, 4 LE
Product Type: Protection Relay
Application: Universal
Reference: P3U30-5AAA2BBAB
Mounting Case Size: 30TE
Device Mounting: Flush
Power Supply: 48–230 V AC/DC
Measuring Inputs:
3 × 1/5 A CT Phase Current
1 × 1/5 A CT Residual Current
4 × 100/110 V VT Voltage
Sensors: 0 temperature, 0 arc
Digital Inputs (DI): 16
Digital Outputs (DO): 8 + 1 watchdog
Communication Ports: Front USB 1, Rear RS485 1
Protocols: IEC 60870-5-101, IEC 60870-5-103, DNP3, Modbus RTU, DeviceNet, SPAbus
Cybersecurity: Password protection, port hardening
Protection Functions: Phase overcurrent, directional overcurrent, earth fault overcurrent, directional earth fault, transient earth fault, capacitor bank unbalance, broken conductor, cold load pick-up, H2/H5 detection, breaker failure, SOTF, directional active underpower, fault locator, recloser, phase undercurrent, excessive start time, motor restart inhibition, capacitor overvoltage, negative sequence overcurrent, overvoltage, undervoltage, positive sequence undervoltage, earth fault overvoltage, underfrequency, rate of change of frequency, synchro-check, lockout relay, CT supervision, VT supervision, programmable stages, programmable curve.
Measurement Functions: 3-phase current, zero/positive/negative sequence current, voltage phase to earth/phase, voltage zero/positive/negative sequence, current/voltage ratios, short circuit reactance, fault location, earth fault reactance, frequency, active/reactive/apparent power and energy, cos φ, tan φ, power angle, power factor, voltage/current phasor diagrams, harmonics 2nd & 15th with THD, CB wear monitoring, voltage interruption.
Control Functions: Switchgear control and monitoring, programmable switchgear interlocking, local/remote control, 2 function keys, Easergy SmartApp, web server.
Connections: Screw removable (DI/DO), ring lugs removable (CT), pin removable (VT)
Display: LCD 128x64 pixels (single line diagram & ANSI), 2 customizable keys, 4 LE
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