Product Introduction

The KJGZY series flameproof and intrinsically safe high-voltage permanent magnet mechanism vacuum switches for mining mobile substations are equipped with multiple protection functions, including overload, short circuit, overvoltage, undervoltage, leakage, leakage locking, phase loss, over-temperature, wind power and gas locking, as well as emergency shutdown of the upper-level power supply. They are particularly suitable for power supply of underground equipment in large mines with high requirements for safety and automation.

Feature

• Independent Chambers：Equipped with independent circuit breaker chamber, isolating switch chamber, and wiring chamber, enabling live maintenance, safe and reliable operation and upkeep.

• High Precision：1A step setting for higher precision.

• Effective Explosion Protection：Integrated three-chamber design ensures reliable explosion protection.

• Digital Control：Adopts an industrial programmable logic controller (PLC) and human-machine interface (GOT) to form the core control system, featuring stable performance, precise protection, and simple maintenance. It also has fault memory and password locking functions.

Advantage

• Stable Operation：Adopts an industrial programmable logic controller (PLC) and human-machine interface (GOT) to form the core control system, featuring stable performance, precise protection, and simple maintenance.

• Safety and Reliability：Current can be continuously set with a step value of 1A, enabling safe and reliable live maintenance, operation and upkeep. All faults trigger the high-voltage side vacuum circuit breaker to trip via signal lines, reducing breaking current.

• Multiple Protections：Equipped with protection functions including overload, short circuit, overvoltage, undervoltage, leakage, leakage locking, phase loss, over-temperature, wind power and gas locking, emergency shutdown of upper-level power supply, etc. It can also protect against faults fed back from the low-voltage side of the mobile substation.

• Modular Design：Comes with standard RS232/485 communication interfaces, featuring powerful remote communication and control functions. It has a small size, reasonable structure and intuitive operation.