Technical Specifications

Core Components & Functions

Insulation Knife-Switch

Visible isolation gap for maintenance safety

Protection Relays

Current/voltage/intermediate relay system

Instrument Transformers

CT/VT for precise measurement and protection

Remote Operation

AC220V controlled contactor switching

Ground Switch

Safety discharge during servicing

Visual Indicators

Lamps and buttons for local status monitoring

Key Operational Features

• High-Current Capacity - 350A continuous rating for heavy loads

• Long Service Life - Rated for 20,000 mechanical operations

• EMI Protection - Shielded enclosure prevents interference

• Multi-Function Protection - Over-voltage, over-current, and measurement

• Space-Efficient Design - Compact 800mm depth for confined spaces

Industrial Applications

• Foundry and smelting plant power distribution

• Large industrial motor control centers

• Manufacturing facility main distribution boards

• Crusher and conveyor system power hubs

• Heavy machinery power control panels

Safety & Design Standards

• IEC 61439-1/2: Low-voltage switchgear assemblies

• IEC 62271-200: Metal-enclosed switchgear

• IEC 60255: Protection relay standards

• IP20 touch protection (IEC 60529)

• Clearance/creepage: 20mm/kV (per IEC 60664)

Installation & Maintenance

Installation Requirements

• Concrete foundation with level tolerance ±2mm

• Minimum clearances: 600mm front, 100mm sides

• Ambient temperature: -5°C to +40°C

• Ventilation: Natural convection design

Maintenance Protocol

• Inspect knife-switch contacts every 5,000 operations

• Calibrate protection relays annually

• Thermographic survey every 6 months

• Verify relay settings after power system modifications

Control System Specifications