PowerLogic P3 Series
PowerLogic P3 Series MV Protection Relays
When standard or advanced MV protection is needed across feeder, motor, generator, or transformer applications, the PowerLogic P3 Series is what we specify. P3 Standard (P3U20, P3U30) covers essential to directional feeder and motor protection, while P3 Advanced adds dedicated models for line differential (P3L30), motor differential (P3M32), generator (P3G30/P3G32), and transformer differential (P3T32) protection, all with IEC 61850 Edition 1/Edition 2 and optional LPCT/LPVT sensor support.
About this product
PowerLogic P3 Series combines protection, measurement, control, and communication for MV distribution systems. The current official range is not limited to the broad P3F, P3M, and P3U labels; it contains nine application-specific models across the P3 Standard and P3 Advanced platforms.
Platform structure
- P3 Standard: Includes the P3U20 and P3U30 universal models.
- P3 Advanced: Includes the P3F30, P3L30, P3M30, P3M32, P3G30, P3G32, and P3T32 application models.
P3U20 is intended for essential feeder and motor applications, while P3U30 adds directional, voltage, and frequency capabilities for a wider application scope. P3 Advanced provides separate model codes for feeder, line differential, motor, generator, and transformer differential applications.
Model selection
P3F30 is used for directional feeder and incomer protection, P3L30 for line or cable differential protection, P3M30 for motor protection, and P3M32 for motor differential protection. P3G30 is intended for generator protection, P3G32 for generator differential protection, and P3T32 for transformer differential protection.
LPCT and LPVT support is available only on selected models. Arc-flash detection can be implemented on the P3 Advanced platform. IEC 61850 Edition 1 and Edition 2 support, together with serial and Ethernet communication options, simplifies system integration.
Engineering and operation
eSetup Easergy Pro is used for settings, configuration, commissioning, and fault analysis. Built-in virtual injection testing, IEC 61850 GOOSE, and extended I/O are available depending on the selected model and hardware configuration.
Typical applications
- Utility feeder bays
- Industrial MV switchboards
- Pump, compressor, and large motor applications
- Distribution and power transformers
- Generator and cogeneration plants
- Line and cable differential protection
- IEC 61850 modernization projects
Technical Specifications
| Applications | Feeder, motor, transformer, generator, and line differential protection |
| Platform | P3 Standard and P3 Advanced |
| Communication | Serial and Ethernet; multiple protocols depending on configuration |
| IEC 61850 | Available, Edition 1 and Edition 2 |
| Sensor Support | Conventional CT/VT; LPCT/LPVT on selected models |
| Arc-Flash Protection | Available on P3 Advanced |
| Mounting | Flush-mounted Standard and Advanced cases |
| Engineering Software | eSetup Easergy Pro |
| Product Status | Current |
Model Selection
| Model | Platform | Main application | Distinguishing protection | When should it be selected? |
|---|---|---|---|---|
| P3U20 | P3 Standard | Universal feeder and motor protection | Basic current-based feeder and motor protection | When voltage-based directional functions are not required |
| P3U30 | P3 Standard | Universal feeder, motor, and transformer protection | Directional current, voltage and frequency | When broader application coverage is required from one universal model |
| P3F30 | P3 Advanced | Directional feeder and incomer protection | Directional feeder protection, autoreclosing and arc flash | When advanced feeder automation and IEC 61850 are required |
| P3L30 | P3 Advanced | Line and cable differential protection | Line differential protection (87L) | When fast selective protection is required for a two-ended line or cable section |
| P3M30 | P3 Advanced | Motor protection | Thermal, starting and locked-rotor protection | For standard protection of large and critical motors |
| P3M32 | P3 Advanced differential | Motor differential protection | Motor differential protection (87M) | When currents from both sides of the motor are to be compared |
| P3G30 | P3 Advanced | Generator protection | Power, excitation and pole-slip protection | When generator-specific protection is required |
| P3G32 | P3 Advanced differential | Generator differential protection | Generator differential protection (87G) | When generator differential protection is required |
| P3T32 | P3 Advanced differential | Transformer differential protection | Transformer differential protection (87T) | For power-transformer differential protection |
Hardware and Integration
| Model | Measurement inputs | Digital I/O | Sensor support | IEC 61850 | Special hardware or integration |
|---|---|---|---|---|---|
| P3U20 | 3 conventional CT inputs, residual-current input, and 1 VT input | 8 or 10 digital inputs; 5 or 8 outputs plus self-supervision | Conventional CT/VT | Available, Ed.1 and Ed.2 | Up to 12 temperature inputs with optional modules; built-in virtual injection testing |
| P3U30 | 3 CT or LPCT inputs, residual-current input, and 4 VT or LPVT inputs | 14 or 16 digital inputs; 8 or 11 outputs plus self-supervision | Conventional CT/VT or LPCT/LPVT | Available, Ed.1 and Ed.2 | Power and energy measurements; built-in virtual injection testing |
| P3F30 | 3 CT or LPCT inputs, residual-current input, and 4 VT or LPVT inputs | 6 to 36 digital inputs; 10 to 21 outputs plus self-supervision | Conventional CT/VT or LPCT/LPVT | Available, Ed.1 and Ed.2 | Arc-flash sensors, IEC 61850 GOOSE, directional protection, fault location, and virtual injection testing |
| P3L30 | 3 conventional CT inputs, residual-current input, and 4 conventional VT inputs | 6 to 36 digital inputs; 10 to 21 outputs plus self-supervision | Conventional CT/VT | Available, Ed.1 and Ed.2 | Two line differential stages; dedicated line differential communication interface |
| P3M30 | 3 CT or LPCT inputs, residual-current input, and 4 VT or LPVT inputs | 6 to 36 digital inputs; 10 to 21 outputs plus self-supervision | Conventional CT/VT or LPCT/LPVT | Available, Ed.1 and Ed.2 | Temperature monitoring with optional RTD modules; motor starting supervision |
| P3M32 | 6 conventional CT inputs, residual-current inputs, and 4 conventional VT inputs | 6 to 16 digital inputs; 10 to 13 outputs plus self-supervision | Conventional CT/VT | Available, Ed.1 and Ed.2 | Motor differential protection and optional temperature monitoring |
| P3G30 | 3 conventional CT inputs, residual-current input, and 4 conventional VT inputs | 6 to 36 digital inputs; 10 to 21 outputs plus self-supervision | Conventional CT/VT | Available, Ed.1 and Ed.2 | Generator-specific power and excitation protection functions |
| P3G32 | 6 conventional CT inputs, residual-current inputs, and 4 conventional VT inputs | 6 to 16 digital inputs; 10 to 13 outputs plus self-supervision | Conventional CT/VT | Available, Ed.1 and Ed.2 | Generator differential and low-impedance restricted earth fault protection |
| P3T32 | 6 conventional CT inputs, residual-current inputs, and 4 conventional VT inputs | 6 to 16 digital inputs; 10 to 13 outputs plus self-supervision | Conventional CT/VT | Available, Ed.1 and Ed.2 | Transformer differential protection with vector group and ratio compensation |
Protection Functions
| Model | Protection scope | Main functions |
|---|---|---|
| P3U20 | Essential feeder and motor protection with current-based measurement | 37, 46, 46BC, 48/51LR, 49, 50/51, 50N/51N, 50BF, 64REF, 67N, 86 (application dependent) |
| P3U30 | Directional current, voltage, frequency, feeder, motor, and transformer-related protection | 27, 37, 46, 48/51LR, 49, 50/51, 50N/51N, 50BF, 59, 59N, 64REF, 67, 67N, 79, 81, 81R, 86 (application dependent) |
| P3F30 | Directional feeder protection, voltage and frequency supervision, auto-reclosing, and arc-flash schemes | 27, 49, 50/51, 50N/51N, 50BF, 59, 59N, 64REF, 67, 67N, 67NI, 79, 81, 81R, 86, 50ARC |
| P3L30 | Line differential protection with feeder backup, voltage supervision, and in-zone transformer support | 27, 49, 50/51, 50N/51N, 50BF, 59, 64REF, 67, 67N, 81, 81R, 86, 87L, 50ARC |
| P3M30 | Thermal, starting, locked-rotor, unbalance, undercurrent, and directional motor protection | 37, 46, 48/51LR, 49, 50/51, 50N/51N, 50BF, 66, 67, 67N, 81, 86, 50ARC |
| P3M32 | Motor differential, thermal, starting, unbalance, and backup overcurrent protection | 37, 46, 48/51LR, 49, 50/51, 50N/51N, 50BF, 64REF, 66, 67, 67N, 81, 86, 87M, 50ARC |
| P3G30 | Generator voltage, frequency, power, loss-of-field, pole-slip, and backup overcurrent protection | 21G, 24, 25, 27, 32R/32L, 40, 46, 49, 50/51, 50N/51N, 51V, 59, 64S, 67, 67N, 78PS, 81, 81R, 86, 50ARC |
| P3G32 | Generator differential protection with generator voltage, frequency, power, and backup functions | 21G, 24, 25, 27, 32R/32L, 40, 46, 49, 50/51, 50N/51N, 51V, 59, 64REF, 64S, 67, 67N, 78PS, 81, 81R, 86, 87G, 50ARC |
| P3T32 | Transformer differential, restricted earth fault, overfluxing, temperature, and backup overcurrent protection | 24, 26/63, 49, 50/51, 50N/51N, 50BF, 64REF, 67, 67N, 81, 86, 87T, 50ARC |
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