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Low-Voltage Power Distribution Cabinet with Automatic Compensation

This low-voltage distribution cabinet is designed for AC 50Hz transmission and distribution systems with a rated current below 0.4kV. It integrates automatic compensation and distribution with functions like leakage protection, electrical energy calculation, and overcurrent protection.

Technical Specifications

Product Overview

Integrated Power Distribution & Compensation

This low-voltage power distribution cabinet is designed for AC 50Hz transmission and distribution systems with voltages below 0.4kV. It intelligently integrates automatic powerless compensation with electrical distribution, offering a comprehensive solution that includes leakage protection, energy metering, and safeguards against overcurrent, overvoltage, and open-phase conditions. Built for both indoor and outdoor environments, this cabinet features a compact, durable design that ensures reliable operation, easy installation, and enhanced protection for electrical networks.

Diagram explaining the JP series cabinet product type and naming conventions — Product type and naming convention breakdown, illustrating the meaning behind the series designation.

Front view of the JP series low-voltage integrated distribution box in a professional setting — The JP Series Low-Voltage Integrated Distribution Box offers a robust and reliable solution for electrical power distribution.

Technical Performance

Key Performance Metrics

400 V

Rated Voltage

50 Hz

Rated Frequency

250 KVA

Max Rated Capacity

60 KVAR

Max Compensation Capacity

Protection Specifications

Parameter	Limit
Leakage Action Current	<300mA
Electrical Shock Action Current	≤50mA
Action Time	<0.2S

Environmental Conditions

Operating Environment

Ambient Temperature: -25°C to +40°C (Average ≤ +35°C)
Altitude: Up to 2000m
Installation Inclination: ≤ ±5°
Protection Degree: IP55
Operating Environment: Free from severe vibration, corrosive gas, and conductive dust

Key Components

Internal Components

Component Type	Model/Function
Watt-hour Meter	DD862 3-phase/4-wire
Total Control	CJ20 AC Contactor
Shunt Distribution	RDM1 Plastic Housing Circuit Breaker
Leakage Relay	RDJD2 Phase Demodulation Amplitude Discrimination
Power Controller	JKL5C Powerless Power Controller
Capacitor	BSMJ Self-recovery Low-voltage Parallel Capacitor

Internal view of the cabinet showing metering, circuit breakers, and capacitors — Internal layout featuring essential components including metering, current transformers, capacitors, and residual current circuit breakers.

Product Features

Key Features: Automatic CompensationWeatherproofLeakage ProtectionOvercurrent ProtectionOvervoltage ProtectionEasy InstallationCompact DesignElectric Larceny Protection