Solid Insulated Switchgear/RMU

This shield solid insulated switchgear can be applied to a power supply system of rated voltage of 35kV, AC 50Hz and terminal power supply. Its specification can comply with the provisions of IEC298 with application of power grid, factory distribution, high voltage transmission, railway system, urban power distribution, wind power generations.

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Product Advantages

Solid Insulation
Shielded layer of conductive material makes the surface at earth potential everywhere; it is accidently touchable providing safety features for operator.This shielded solid insulated switchgear, which is completely solid insulated, has entire circuit insulated by epoxy and silicon rubber, leaves no live parts in free air; givenless affection of dirt, humidity and pollutions etc.; requires less necessity for maintenance. Each phase is selfcontained into single epoxy block, significantly reducing phadischarge and risks of internal arc fault.

Modular architecture
Modular architecture enables reduction of switchgear dimensionsDimensions of Solid Insulated Switchgear: 700 × 2000 × 1150 it is only 1/6 of traditional air insulated type ie KYN61.

Optimized Electric Field
Computing technology facilitate optimal design of electric field and isolation.

Safety
Sealed electrified body IP67.
Inner cone cable terminal to improve the connection reliability.

Extreme Environment Application
Suitable for cold, high altitude, humidity, corrosion, lowland and explosion-proof area.

All Operating Condition Environment

  • Ambient temperature: -50°C ~ +70°C;
  • Altitude: ≤ 5500 m
  • Internal and external arcing test report (switches, bus bar, cable compartment) detection
  • Immersion detection test report
  • Salt spray testing report
  • The circuit breaker is composed of mechanism transmission box and circuit breaker poles.
Parameters
Parameter Title Unit Vacuum Circuit Breaker Disconnecting Switch Earthing Switch
Rated Voltage kV 40.5 40.5 40.5
Arc Quenching - Vacuum - -
Rated Current A 1250 1250 1250
Rated Frequency Hz 50/60 50/60 50/60
Main Circuit Resistance μΩ ≤120 ≤120 ≤120
Power Frequency Withstand Voltage(1 min) kV 118 118 118
Lightning Impulse Withstand Voltage kV 215 215 215
Rated Short-circuit Breaking Current kA 31.5 - -
Breaking Times times 30 - -
Rated Short-circuit Making Current kA 80 - -
Rated Short-time Withstand Current/ Duration kA/S 31.5/4s 31.5/4s 31.5/4s
Rated Peak Withstand Current kA 80 80 80
Internal Arcing Test (AFLR level) kA/S 31.5kA/0.5s (including bus compartment, switch compartment, cable compartment)
Degree of Protection - IP67 IP67 IP67
Mechanical Endurance Times 10000 3000 3000