Schneider MiCOM P127BA1Z1D3FE0 Overcurrent & Earth Fault Protection Relay
I. Product Overview
The Schneider Electric MiCOM P127BA1Z1D3FE0 is a multifunction three-phase overcurrent and earth fault protection relay of the MiCOM P12x series, with order reference P127BA1Z1D3FE0. The MiCOM P12x series is a range of directional and non-directional overcurrent relays, from single phase or earth fault protection up to the multifunctional three-phase P127 device with voltage protection functions. The P127 is the most feature-rich model in the P12x series, integrating overcurrent, earth fault, voltage, frequency, thermal overload and other protection functions.
In the order reference, "B" indicates the 220-480V direct voltage input version (voltage transformer cannot be fitted), as opposed to the 57-130V voltage input version which can be fitted with a voltage transformer. The relay adopts flush mounting in a standard 4U (30 TE) case with backlit LCD display, suitable for feeder protection, transformer protection, motor protection and busbar protection in power transmission and distribution systems.
The P127BA1Z1D3FE0 protection relay integrates measurement, protection, control and communication functions, supporting Modbus RTU, DNP3, IEC 60870-5-103 communication protocols, and can be integrated into substation integrated automation systems. The relay provides comprehensive fault recording, event recording and disturbance recording functions, facilitating fault analysis and system maintenance.
II. Specifications
表格
| Parameter | Value |
|---|---|
| Brand | Schneider Electric |
| Series | MiCOM P12x |
| Model | P127BA1Z1D3FE0 |
| Product Type | Multifunction three-phase overcurrent/earth fault protection relay (with voltage protection functions) |
| Voltage Input | 220-480V direct voltage input type (Type B, voltage transformer cannot be fitted) |
| Current Inputs | 4 current inputs (CT X/5A and X/1A) |
| Voltage Input Channels | 3 voltage inputs |
| Discrete Inputs | 12 |
| Discrete Outputs | 9 |
| Rated Supply Voltage | 24~250V DC (19.2~300V); 48~250V DC (38.4~300V); 48~240V AC (38.4~264V) |
| Communication Protocols | Modbus RTU, DNP3, IEC 60870-5-103 |
| Communication Ports | RS232, RS485 |
| Display | Backlit LCD, 2 lines × 16 characters |
| Mounting | Flush mounting (standard 4U/30TE case) |
| Dimensions (H×W×D) | Total height 177mm (flush 157.5mm) × width 103mm × total depth 270mm (flush 240mm) |
| Protection Functions | Overcurrent (50/51), earth fault (50G/51G), directional overcurrent (67), undervoltage (27), overvoltage (59), frequency (81), thermal overload (49RMS), breaker failure (50BF), etc. (see Product Features) |
| Diagnostics | Fault recording, event recording, disturbance recording (15s), CT/VT supervision, trip circuit supervision (TCS) |
| Manufacturer | Schneider Electric |
Note: For the specific configuration meanings of the A1, Z1, D3, F, E0 fields in the order reference, please contact via email for confirmation.
III. Product Features
- Schneider Electric MiCOM series protection relay, internationally renowned brand
- Most feature-rich model in the P12x series, integrating overcurrent, voltage, frequency and thermal overload protection
- 220-480V direct voltage input version, direct measurement without external voltage transformer
- 4 CT current inputs (X/5A and X/1A compatible), 12 discrete inputs, 9 discrete outputs
- Comprehensive protection functions (ANSI codes): 50/51 overcurrent, 50G/51G earth fault, 67 directional overcurrent, 67N directional earth fault, 27 undervoltage, 59 overvoltage, 47 negative sequence overvoltage, 59N neutral voltage displacement, 81L/81O frequency, 81R rate of change of frequency, 49RMS thermal overload, 37 phase undercurrent, 46 negative sequence overcurrent, 64 restricted earth fault (REF), 62/50BF breaker failure, 79 recloser, 86 lockout, 51V voltage-restrained overcurrent, 67W wattmetric earth fault, etc.
- Supports Modbus RTU, DNP3, IEC 60870-5-103 communication protocols
- Fault recording, event recording and disturbance recording (15s) functions for fault analysis
- CT/VT supervision, trip circuit supervision (TCS) switchgear diagnostics
- Backlit LCD display (2 lines × 16 characters), intuitive operation interface
- Wide supply voltage range (24-250V DC / 48-240V AC), suitable for various substation environments
- 4U (30TE) standard case, flush mounting, compact construction
- Suitable for feeder, transformer, motor and other protection applications in power transmission and distribution
IV. Typical Applications
- Feeder overcurrent and earth fault protection in power transmission and distribution systems
- Power transformer protection
- Motor protection
- Busbar protection
- Directional overcurrent protection (ring network, dual power supply systems)
- Voltage protection (undervoltage, overvoltage, frequency)
- Companion equipment for substation integrated automation systems (SCADA)
- Distribution network protection and automation
- Industrial enterprise power supply and distribution protection
- Retrofit and upgrade of power system protection relays
V. Model Description
The order reference P127BA1Z1D3FE0 fields are explained as follows:
- P127: Product series/model (MiCOM P127 multifunction three-phase overcurrent/earth fault protection relay)
- B: Voltage input configuration, 220-480V direct voltage input type (voltage transformer cannot be fitted; Type A is 57-130V, voltage transformer can be fitted)
- A1: Configuration code (current rating/display etc., specific meaning contact via email for confirmation)
- Z1: Configuration code (supply/structure etc., specific meaning contact via email for confirmation)
- D3: Configuration code (discrete input/output etc., specific meaning contact via email for confirmation)
- F: Configuration code (communication protocol etc., specific meaning contact via email for confirmation)
- E0: Configuration code (software version etc., specific meaning contact via email for confirmation)
To confirm the complete configuration meaning of each field in P127BA1Z1D3FE0 and specific functional differences, please contact via email for confirmation. We will provide detailed technical documentation and selection support.
VI. Why Choose Us
- Professional channel supply, comprehensive model coverage across multiple brands of industrial spare parts
- Strict quality inspection process ensuring reliable product quality
- Professional engineering team providing technical support and selection consultation
- Quick response, efficient logistics, orders accepted
- Quality assurance, worry-free after-sales service
VII. FAQ
Q1: What is P127BA1Z1D3FE0 and what protection functions does it have?
A: P127BA1Z1D3FE0 is a Schneider Electric MiCOM P127 series multifunction three-phase overcurrent/earth fault protection relay, integrating overcurrent, earth fault, directional overcurrent, undervoltage, overvoltage, frequency, thermal overload, breaker failure and other protection functions (ANSI 50/51, 50G/51G, 67, 27, 59, 81, 49RMS, 50BF, etc.).
Q2: What does "B" in the order reference mean?
A: "B" indicates the 220-480V direct voltage input version, meaning the relay connects directly to the system voltage for measurement and a voltage transformer cannot be fitted; the P127A type is 57-130V voltage input and a voltage transformer can be fitted.
Q3: What are the input/output and communication capabilities of this relay?
A: It has 4 current inputs (CT X/5A and X/1A), 3 voltage inputs, 12 discrete inputs, 9 discrete outputs, and supports Modbus RTU, DNP3, IEC 60870-5-103 communication protocols with RS232/RS485 ports.
Q4: What do the other fields (A1, Z1, D3, F, E0) in the order reference represent?
A: These fields correspond to configuration options such as current rating/display, supply/structure, discrete input/output, communication protocol and software version. For specific meanings, please contact via email for confirmation.
