Solid Insulated Switchgear — Reliable, Sustainable, and Future-Ready

Solid insulated switchgear (SIS) plays a critical role in power distribution networks by providing precise system control, reliable protection, and operational continuity.

• Preventing Premature Equipment Failures
  Air-Insulated Switchgear (AIS) is susceptible to early failure due to corrosion, ingress of small animals, humidity, dust contamination, and adverse atmospheric conditions.Kenjing Group's SIS adopts a fully enclosed stainless steel housing that ensures uninterrupted operation even in environments with high humidity, salt spray, or flooding, effectively eliminating external interference.
• Comprehensive Safety Interlocking
  To guarantee operational safety, Kenjing Group’s SIS integrates a robust five-position interlocking systembetween the isolator, Earthing Switch, circuit breaker, and cabinet access points. This mechanism prevents the opening of cabinet doors under live conditions, thereby ensuring the safety of maintenance personnel and equipment.
• Eco-Friendly and SF6-Free Design
  By eliminating the use of SF₆ gas, which is a potent greenhouse gas, solid insulated switchgear minimizes the risk of harmful emissions caused by leakage and significantly reduces the environmental footprint of medium-voltage equipment.
• High Reliability with Minimal Maintenance
  Conventional AIS requires periodic visual inspections, typically every five years, and may demand complete power shutdown and grounding to adjust internal components. In contrast, Kenjing Group’s SIS features a precision mechanical drive system utilizing needle roller bearings—offering high impact resistance, greater load capacity, and reduced friction. This design ensures enhanced mechanical stability and reliability, while minimizing maintenance frequency and cost.

Summary

Solid insulated switchgear offers a superior alternative to traditional designs, delivering long service life, robust safety, environmental compliance, and low maintenance demands. As power distribution networks modernize, SIS stands out as a forward-thinking solution aligned with both operational needs and sustainable development goals.