SY-EG-12

Environmentally friendly gas insulated ring main unit

Product Introduction

Revolutionary and environmentally friendly gas insulation technology redefines the safety standards for medium voltage distribution. Adopting fully sealed 304 Stainless steel chamber and micro positive pressure N ₂/dry air insulation system, integrating vacuum arc extinguishing and three station linkage Institutions achieve zero leakage and zero pollution operation throughout their entire lifecycle. Anti condensation designed specifically for harsh environments Structure, capable of withstanding extreme temperature differences from -40 ℃ to+75 ℃.

Execution standard

  • GB/T 311.1 Insulation coordination - Part 1: Definitions, principles and rules
  • GB/T 1984 High voltage AC circuit breaker
  • GB/T 1985 High voltage AC isolation switch and grounding switch
  • GB/T 3804 3.6KV~40.5KVHigh voltage AC load switch
  • GB/T 3906 3.6KV~40.5KVExchange metal enclosed switchgear and control equipment
  • GB/T 4208 Protection level of shell (IP code)
  • GB/T 11022 Common technical requirements for high voltage switchgear and control equipment standards
  • DL/T 404 3.6KV~40.5KVExchange metal enclosed switchgear and control equipment
  • DL/T 402 High voltage AC circuit breaker
  • DL/T 593 Common technical requirements for high voltage switchgear and control equipment standards
  • 12KVStandardized Design Customization Scheme for Ring Main Unit (Box) (2023 Edition)

Core strengths

  • Green and low-carbon: replace SF6 with N2/dry gas, achieve zero leakage and pollution throughout the entire cycle, and practice environmental protection.
  • Excellent performance: vacuum arc extinguishing+three stations, short circuit resistance (20KA/4s), suitable for extreme temperature range of -40 ℃~+75 ℃.
  • Efficient operation and maintenance: fully sealed with minimal maintenance, long mechanical lifespan (10000/3000 cycles), modular and easy to replace and repair.
  • Safe and reliable: high insulation withstand voltage (42KV for power frequency, 75KV for lightning), anti misoperation, with the potential for intelligent monitoring expansion.

Technical Specifications