Schneider MiCOM P127BA0V6D3FE0 Overcurrent and Earth Fault Protection Relay
Schneider MiCOM Px20 series 3-phase and earth fault comprehensive protection relay, Type B earth current input (1A rated), V6 voltage module (57-130V), D3 communication module (dual-port), FE0 output configuration (8 relee programabile). It supports 24-250V DC / 48-240V AC power supply with IP50 ingress protection. Applied for the protection of feeders, transformatoare, motors and other equipment in medium and low-voltage power systems. Part number: P127BA0V6D3FE0.
- Definirea segmentului de model
| Segmentul de model | Descriere |
| P127 | Seria de produse: MiCOM Px20 series, full 3-phase and earth fault protection relay |
| B | Earth current input type: Tip B, rated current Ion=1A, measuring range 0.01–8 Ion |
| A0 | Auxiliary function code: Configurație standard, no special extended functions |
| V6 | Voltage module type: V6, input range 57-130V, compatible with PT secondary voltage |
| D3 | Communication module type: D3 dual communication ports (front RS232 / rear RS485); supports Modbus / IEC60870-5-103 / DNP3.0 |
| FE0 | Output configuration: FE0 type, 8 programmable relay outputs (inclusiv 1 master trip output RL1) |
| P127BA0V6D3FE0 | Schneider official part number, globally unique identifier |
- Full Version Technical Specification
| Categoria parametrilor | Specificații | Observații |
| Basic Info | 3-fază & earth fault protection relay, ANSI 50/51/50G/51G protection functions | For medium/low voltage feeder protection |
| Part Number | P127BA0V6D3FE0 | Order strictly by this code |
| Dimensiuni | W144mm × H144mm × D190mm | Flush mount, fits standard 19-inch cabinet |
| Alimentare electrică | 24-250În DC / 48-240V și | Wide voltage input for various power systems |
| Intrare curentă | Phase current: 5O (standard) / 1O (opțional); Earth current: 1O (Tip B) | Accuracy class 0.2; measuring range 0.01–8× rated value |
| Tensiune de intrare | 57-130V (V6 module) | Matches PT secondary; phase/line voltage selectable |
| Funcții de protecție | Phase Overcurrent Stage I/II/III, Earth Overcurrent Stage I/II, Directional Protection, Auto-reclosing, Cold Load Pickup | 8 setting groups for flexible configuration |
| Output Configuration | 8 programmable relay outputs (RL1-RL8), RL1 as master trip output | Evaluarea contactului: 5A @ 250V AC / 30În DC |
| Interfață de comunicare | Front port: RS232 (local commissioning); Rear port: RS485 (system communication) | Suporta Modbus RTU, IEC60870-5-103, DNP3.0 |
| Measurement Functions | Actual, Voltaj, putere, frecvenţă, energie; dynamic average/peak value recording | 250 event records, 25 înregistrări de erori (1600Hz sampling) |
| Ambient Conditions | Operating: -25°C ~ +70°C; Depozitare: -40°C ~ +85°C; Humidity ≤95% (necondens) | Industrial grade for harsh environments |
| Certificari | CE, UL, CSA, IEC 60255 | Complies with global power equipment safety standards |
| Durata de viață | Relay mechanical life: 10⁵ operations | Durata de viata electrica: 10⁴ cycles at rated load |
| Greutate | Aproximativ. 3.5kg | Ușoare pentru instalare ușoară |
- MiCOM P127 Full Model List
| Part Number | Model | Earth Current Input | Voltage Module | Modul de comunicare | Output Configuration | Caracteristici speciale |
| P127BA0V6D3FE0 | P127 | Tip B (1O) | V6 (57-130V) | D3 (Dual-port) | FE0 (8 relee) | Standard feeder protection |
| P127AA0V6D3FE0 | P127 | Tip A (5O) | V6 (57-130V) | D3 (Dual-port) | FE0 (8 relee) | 5A phase current for standard CT |
| P127BA0Z1D3FE0 | P127 | Tip B (1O) | Z1 (24-60V) | D3 (Dual-port) | FE0 (8 relee) | Low voltage module for special power supply |
| P127BA0V6D1FE0 | P127 | Tip B (1O) | V6 (57-130V) | D1 (Single-port) | FE0 (8 relee) | Single communication port, rentabil |
| P127BA0V6D3GE0 | P127 | Tip B (1O) | V6 (57-130V) | D3 (Dual-port) | GE0 (12 relee) | Extended outputs for complex logic |
| P127BA1V6D3FE0 | P127 | Tip B (1O) | V6 (57-130V) | D3 (Dual-port) | FE0 (8 relee) | With IRIG-B synchronization for precision time control |
| P127CA0V6D3FE0 | P127 | Tip C (0.1O) | V6 (57-130V) | D3 (Dual-port) | FE0 (8 relee) | High-sensitivity earth input for low-current earthing systems |
- Înlocuire & Comparație între mărci
4.1 Same Brand Direct Replacement
| Model original | Model de înlocuire | Descriere | Aplicație |
| P127BA0V6D3FE0 | P127BA0V6D3GE0 | Upgraded to 12 relay outputs with expanded control capacity | Complex protection logic requiring more control outputs |
| P127BA0V6D3FE0 | P127BA1V6D3FE0 | Added IRIG-B time synchronization for higher timestamp accuracy | Power system fault analysis requiring precise time stamping |
| P127BA0V6D3FE0 | P127CA0V6D3FE0 | Upgraded to Type C high-sensitivity 0.1A earth input | Low-current earthing systems such as petrochemical and metallurgy |
| P127BA0V6D3FE0 | P127BA0Z1D3FE0 | Replaced with Z1 24-60V low voltage module | DC systems or special low-voltage power supply environments |
4.2 Cross-Brand Equivalent Models
| Schneider | ABB | Siemens | GE | Main Differences |
| P127BA0V6D3FE0 | REF615 | 7SJ60 | Multilin 369 | Schneider cost-performance & flexible configuration |
| ABB higher integration; Siemens richer protocol support | ||||
| Schneider 8 setting groups for multiple protection schemes | ||||
| GE larger event record capacity (500 înregistrări) |
- Mediul de aplicare & Cazuri industriale
Recommended Applications
Sistem de alimentare: Substation & distribution feeder protection up to 35kV
Automatizare industrială: Motor, transformer and busbar protection in petrochemical, metalurgie, coal industries
Railway: Supracurent & earth fault protection for traction power supply and station distribution
Energie Nouă: Combiner box and inverter protection for PV and wind farms
Clădiri Comerciale: Standby power system protection for shopping complexes and data centers
Public Utilities: Power protection for pumping stations and water treatment projects
Cazuri tipice de aplicare
- Substation Feeder Protection in Chemical Park
Objective: Protect 10kV feeders against equipment damage and power outage caused by overcurrent & earth faults
Avantaje: Wide voltage adaptability; 8 programmable outputs for complex trip logic; dual-port communication for remote monitoring
System Configuration: P127BA0V6D3FE0 + 10kV Vacuum Circuit Breaker + SCADA System
Effect: Fault response <30Domnișoară; power outage duration reduced by 40%; power supply reliability improved
- Motor Protection Scheme for Automotive Factory
Objective: Protect large stamping line motors against overload and earth faults
Avantaje: Directional protection for fault location discrimination; auto-reclosing reduces transient fault impact; event recording facilitates fault analysis
System Configuration: P127BA0V6D3FE0 + MCC + Ethernet industrial
Effect: Motor failure rate reduced by 25%; production line efficiency increased by 18%
Not Recommended Scenarios
High voltage system (>35kV): Use MiCOM P40 or higher series
UHVDC system: Not applicable; dedicated DC protection relay required
Strong electromagnetic interference environment: Additional electromagnetic shielding required to avoid measurement deviation
Underwater / Humid outdoor environment: IP50 only suitable for indoor dry locations; outdoor installation requires protective enclosure
- Instalare & Ghid de cablare
Cerințe de instalare
- Tip de montare: Flush mounting; panel cutout 138×138mm, front panel 144×144mm
- Installation Position: Install inside control cabinet, avoid direct sunlight and high heat source; reserve ≥50mm clearance for heat dissipation
- Wiring Standard: Current loop ≥2.5mm² copper cable; voltage loop ≥1.5mm² copper cable; separate routing ≥100mm between current and voltage wires
- Earthing: Device earth terminal must be reliably connected; earth resistance ≤1Ω linked to station earthing grid
- Communication Wiring: RS485 uses shielded twisted pair; single-end shielding grounding; max communication distance 1200m
Core Terminal Definition
| Terminal No. | Funcţie | Tip | Observații |
| L1/L2/L3 | Phase Current Input | 5A/1A | Connect CT secondary, pay attention to polarity |
| ÎN | Earth Current Input | 1O (Tip B) | Connect residual CT secondary |
| UA/UB/UC/UN | Tensiune de intrare | 57-130V | Connect PT secondary; phase/line voltage optional |
| DC+/DC- | Alimentare electrică | 24-250În DC / 48-240V și | Wide voltage with reverse polarity protection |
| RL1-RL8 | Ieșire releu | NU/NC optional | RL1 master trip linked with trip indicator |
| COM1/COM2 | Communication Port | RS232/RS485 | COM1 front port; COM2 rear port |
Puncte cheie de punere în funcțiune
- Configurarea parametrilor: Use MiCOM S1 Studio via RS232 to set CT/PT ratio, protection settings and communication parameters
- Setting Group Selection: 8 setting groups switchable for different operation modes; Group 1 implicit
- Protection Function Test: Simulate phase overcurrent & earth overcurrent to verify action accuracy and response time
- Communication Test: Verify Modbus / IEC60870-5-103 / DNP3.0 data transmission
- Event Record Check: Confirm complete event & fault waveform records after fault triggering
- Selection Rules & Quick Reference
Selection Mnemonic
Schneider P127 relay, full 3-phase earth protection,
Type B 1A earth input, V6 voltage 57-130V option,
D3 dual-port communication, FE0 with 8 relay operation,
24-250V wide power range, IP50 high protection graduation,
Order by P127BA0V6D3FE0, ideal for feeder station application.
Quick Selection Rules
- Intrare curentă: A=5A standard CT; B=1A high precision; C=0.1A high-sensitivity earthing
- Voltage Module: V6=57-130V for PT secondary; Z1=24-60V for low voltage supply
- Comunicare: D3=dual-port local+remote; D1=single-port cost saving
- Ieșire: FE0=8 relays standard; GE0=12 relays extended control
- Special Function: Sufix “1” supports IRIG-B time synchronization
- Aplicație: Feeder=standard; Motor=with directional; Transformer=with cold load pickup
- Air Freight Compliance & Certificari
Air Freight Compliance: No lithium battery / supercapacitor. Built-in electromagnetic components, compliant with IATA DGR Class 9 non-restricted goods, shippable as general cargo.
Certificari:
CE: IEC 60255, ÎN 61010
UL: UL 1053 Power Protection Standard
CSA: Canadian electrical safety approval
IEC 60255 Functional Safety certified by TÜV Rheinland
RoHS: EU RoHS compliant, free of hazardous heavy metals
Environmental Compliance: REACH regulation compliant
- de cumpărare & Logistics Info
| Articol | Detalii |
| MOQ | 1 unitate |
| Lead Time | Standard 8-10 săptămâni; Express 3-5 săptămâni |
| Ambalare | Individual carton with manual, software CD and communication cable |
| garanție | 12 months after commissioning acceptance |
| Recommended Spares | Same model relay, relay output module, communication module |
| Accesorii potrivite | MiCOM S1 Studio, CT/PT, întrerupător de circuit, communication switch |
Schneider MiCOM Protection Relay Full Series List (Structured Version)
Schneider MiCOM protection relays consist of 8 platform series: Px10 / Px20 / Px30 / Px40 / Px60 / Px70 / Px80 / Px90. Covers feeder / motor / transformator / generator / busbar / line distance / differential protection. Supports Modbus / IEC60870-5-103 / DNP3.0. Applicable from medium-low voltage up to EHV power systems. Part number rule: PXXX[Function Code][Module Code].
- Naming Rule Definition
| Segment | Sens | Exemplu |
| P | Protection Relay identifier | P |
| XXX | Cod de serie: | P127 (Feeder), p241 (Motor) |
| – P1xx: Feeder Protection | ||
| – P2xx: Motor & Rotating Machine | ||
| – P3xx: Generator | ||
| – P4xx: Line Distance | ||
| – P6xx: Diferenţial (Transformer/Motor/Busbar) | ||
| – P7xx: Busbar Protection | ||
| – P8xx: Circuit Breaker Failure | ||
| – P9xx: Voltage/Frequency Control | ||
| Function Code | Special function: | B=1A Earth; A1=IRIG-B |
| – A/B/C: Earth current 5A/1A/0.1A | ||
| – A0/A1: Standard / with IRIG-B | ||
| Module Code | Functional module: | V6, D3, FE0 |
| – V6/Z1: 57-130V / 24-60V | ||
| – D1/D3/D5: Single/Dual-port/Ethernet | ||
| – FE0/GE0/HE0: 8/12/16 relee | ||
| Full Part No. | Global unique code | P127BA0V6D3FE0 |
- Series Classification by Application
2.1 Feeder Protection (P1xx)
| Serie | Model | Funcția de bază | Intrare curentă | Voltage Module | Comm. | Ieșire | Typical Part No. |
| Px10 Basic | P111/P115/P116 | Supracurent + Defect de pământ, Self-powered | 5A/1A | None/Optional | None/D1 | 4-6R | P111A00V0D0FE0 |
| Px20 Standard | P121/P122/P127 | 3-stage O/C + 2-stage Earth + Direction + Auto-reclose | 5A/1A/0.1A | V6/Z1 | D1/D3 | FE0/GE0 | P127BA0V6D3FE0 |
| Px30 Advanced | P132/P139/P138 | Feeder Management + ATS + Remote I/O | 5A/1A | V6/Z1 | D3/D5 | GE0/HE0 | P132AA0V6D5GE0 |
| Px40 High-End | P141/P142/P143 | Full feeder protection + Măsurarea energiei + Fault Recorder | 5A/1A | V6/Z1 | D3/D5 | HE0 | P141CA0V6D5HE0 |
2.2 Motor & Rotating Machine (P2xx)
| Serie | Model | Funcția de bază | Motor Type | Special Function | Partea nr. Exemplu |
| Px20 | P211 | Motor Monitoring + Supraîncărcare + Locked Rotor + Phase Loss | LV Motor | Temperature Monitoring | P211A00V0D0FE0 |
| Px40 | P241/P242/P243 | Integrated Motor Protection + Start Control + Diagnosticarea defecțiunilor | MV/HV Motor | Positive/Negative Sequence + Thermal Model | P242AA0V6D3GE0 |
| Special | P244 | Synchronous Motor Protection + Excitation Control | Motor sincron | Out-of-step + Excitation Monitoring | P244BA0V6D3GE0 |
2.3 Transformer Protection (P6xx)
| Serie | Model | Funcția de bază | Transformer Type | Differential Type | Partea nr. Exemplu |
| Px30 | P631/P632/P633 | Transformer Differential + O/C + Earth + Temperatură | 2-winding / 3-winding | Ratio Differential | P632AA0V6D3GE0 |
| Px40 | P635/P636/P637 | Advanced Transformer Protection + Winding Temp + Buchholz | Power Transformer | Harmonic Restraint Ratio Differential | P635BA0V6D5HE0 |
| Railway | P638 | Railway OHL Differential Protection | Traction Transformer | Fast Differential + Directional | P638CA0V6D3GE0 |
2.4 Generator Protection (P3xx)
2.5 Line Distance Protection (P4xx)
2.6 Busbar Protection (P7xx)
2.7 Special Function Series
Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare

















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