ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker Handcart Assembly – 40.5kV VCB for KYN61 Switchgear

Product Overview

The ZN85-40.5 Series Indoor High Voltage Vacuum Circuit Breaker Handcart Assembly is a high-performance power distribution unit designed for three-phase AC 50/60Hz systems with a rated voltage of 40.5kV. Engineered for reliability and safety, this assembly serves as an essential control and protection unit for industrial mining enterprises, power plants, and substations. It is specifically optimized for use within KYN61-40.5(Z) switchgear, offering a robust solution for environments requiring frequent switching operations.

Technical Features

• Compact Design: The operating mechanism and main circuit feature a top-and-bottom arrangement, resulting in a reduced handcart depth.

• Enhanced Protection: Equipped with a screw propulsion mechanism with a clutch to prevent damage to the operating mechanism.

• Reliable Interlocking: Features the latest “five-protection” switchgear interlocking design, replacing the steel bracing wire of older models for superior endurance.

• Corrosion Resistance: Components are manufactured from high-quality steel alloy with special surface treatments, capable of withstanding neutral salt spray tests for over 350 hours.

• Maintenance-Free Insulation: Utilizes a cylindrical composite insulation main circuit that is compact, maintenance-free, and requires minimal service.

Technical Specifications

Main Technical Parameters

Operating Parameters

Ambient Application Conditions

To ensure safe operation, the ZN85-40.5 should be installed under the following conditions:

• Ambient Temperature: -40°C to +40°C, with a 24-hour average not exceeding 35°C.

• Relative Humidity: Daily average ≤ 95%; Monthly average ≤ 90%.

• Altitude: Not exceeding 1000m.

• Site Requirements: Must be free from fire hazards, explosion risks, heavy pollution, chemical erosion, and violent vibration.