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Description
3 Phase PME / PEN Fault Detection Unit
WCED WARB5100C/PMESP
The WARB5100C/PMESP is an advanced 3 phase EV distribution board designed to provide robust safety and compliance in electric vehicle (EV) charging systems. This unit actively monitors PME (Protective Multiple Earthing) systems to detect and isolate PME faults, including PEN (Protective Earth and Neutral) faults or PEN loss. Such faults can create serious safety risks if not managed correctly.
The device disconnects all phases and the earth upon detecting a fault, ensuring a safer EV charging environment without requiring an earth rod.
This model is equipped with a 5-pole 100A Curve C MCB and a Type 2 Surge Protection Device (SPD), delivering exceptional protection against overcurrents and voltage surges. It is specifically suited for EV chargers with integral DC leakage protection but lacking PME fault detection.
Understanding PEN Faults and PEN Loss
PEN Faults: A PEN fault occurs when the combined Protective Earth and Neutral (PEN) conductor in a PME system becomes damaged or disconnected. This can be caused by physical wear, corrosion, or accidental damage. When a PEN fault happens, the protective earth conductor (PE) can carry live voltage, creating a dangerous condition where the EV chassis or connected equipment becomes electrified.
PEN Loss: PEN loss is a specific condition within PME systems where the PEN conductor fails completely, leading to the loss of the combined earth and neutral connection. This can cause a rise in voltage on the earth conductor, posing serious risks of electric shock or equipment damage.
Why PEN Fault Detection Matters
Without proper detection and isolation, a PEN fault or PEN loss can lead to hazardous situations during EV charging, including:
- Electrification of the EV chassis or connected equipment.
- Increased risk of electric shock to users.
- Potential damage to electrical appliances and systems.
The WARB5100C/PMESP unit mitigates these risks by actively monitoring the system for PME faults, including PEN faults and PEN loss, and automatically disconnecting the supply to ensure safety.
Key Features of 3 Phase PME / PEN Fault Detection Unit WARB5100C/PMESP
- Automatic Monitoring: Continuously tracks the 400V supply voltage across all phases, ensuring stable and safe operation.
- 5-Pole 100A Curve C MCB: Provides reliable overcurrent protection, ideal for high-demand 3 phase systems.
- Integrated Type 2 SPD: Protects against voltage surges and includes visual indicators: Green (Good) and Red (Replace).
- PME Fault Detection: Automatically disconnects all phases and the earth upon detecting PME faults, including PEN faults and PEN loss.
- Auto Reset for Under-Voltage: Restores power automatically when normal voltage levels are regained after under-voltage isolation.
- Manual Reset for Over-Voltage: Requires a manual reset via the RED “RESET” button for added safety after over-voltage isolation.
Technical Specifications
- Standards: BS EN 61439-3, BS7671.
- Rated Voltage: 400V.
- Voltage Range: 207-253V (4 seconds) per phase.
- Rated Current (Main Switch): 100A.
- Frequency: 50Hz.
- Cable Entry: Multiple knockouts for easy installation.
- Terminal Type: Cage clamp for secure connections.
- IP Rating: IP40, suitable for indoor use.
- Surge Protection: Type 2 SPD with visual status indicators.
- Device Mounting: 35mm DIN rail.
- Ambient Temperature: -25°C to +55°C.
Applications
- Residential: Ensures safety for Tesla and other 3 phase EV chargers in PME-based systems, addressing PME faults and PEN loss.
- Commercial: Ideal for office and retail EV charging hubs, offering fault detection and surge protection.
- Industrial: Provides robust safety and compliance for high-demand EV charging facilities.
Why This Unit is Essential
The 3 Phase PME / PEN Fault Detection Unit WARB5100C/PMESP unit is indispensable for 3 phase EV charging systems, particularly in PME systems prone to PEN faults or PEN loss. Its ability to detect and isolate faults, combined with surge and overcurrent protection, ensures secure and reliable operation. This unit is critical for maintaining compliance with safety regulations and protecting users and equipment.
Why Buy From Electrical4Less?
Electrical4Less offers trusted solutions for modern electrical and EV charging needs:
- A comprehensive selection of products designed for safety and efficiency.
- Expert guidance to help you select the right products for your setup.
- Competitive pricing without compromising quality or reliability.
Explore our range of PME Fault Detection Units and read our dedicated posts for more information on EV safety and charging solutions. Electrical4Less is your partner for innovative and dependable electrical products.
