Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

High-voltage disconnectors are widely used in China’s power systems due to their convenient operation and strong practicality. However, during long-term operation, serious faults such as insulator fracture and failure to open/close still occur, significantly impacting the normal operation of power systems [1]. Based on this, this paper analyzes common faults of high-voltage disconnectors during operation and proposes corresponding solutions based on actual working conditions to improve managemen

In substations with voltage levels of 110 kV and below, the GW5-type disconnector is widely used due to its simple structure, reliable contact performance, and self-cleaning contact function. Every winter, the failure rate of abnormal heating in GW5-type disconnectors shows an upward trend. Therefore, improving winter maintenance practices for GW5-type disconnectors (hereinafter referred to as “disconnectors”) and promptly detecting and addressing overheating faults are of critical importance to

35kV Outdoor Wind-Resistant High-Voltage Disconnector— Suitable for wind farms, overhead line pole-mounted applications, and substation installations.Model series: GW5-40.5 outdoor high-voltage disconnector (hereinafter referred to as “disconnector”).This disconnector is designed for use in 50Hz, 35kV power systems to open or close circuits under no-load voltage conditions. The pollution-resistant variant meets the requirements of users in heavily polluted areas and effectively mitigates polluti

When performing switching operations, operating personnel must carefully verify that the circuit breaker is indeed in the open position. For three-pole interlocked isolating switches, all three phases must move simultaneously, with a maximum allowable vertical discrepancy of no more than 3 mm, before any opening or closing operation of the isolating switch is permitted.1. Key Points for Closing an Isolating SwitchFor manual operation, operating personnel should first remove the interlock pin bef