SOJO Electric Co., Ltd.
Add.: Room 1111, Block D, Jiahua Plaza, Shangdi 3rd Street, Haidian District, Beijing
Tel.: +86-010-62983386
Fax: +86-010-62988464

Home » Products » Compact Switchgear » 40.5kV Solid Insulated Switchgear

40.5kV Solid Insulated Switchgear

Product Advantages
Shielded 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; given switchgear less affection of dirt, humidity and pollutions etc.; requires less necessity for maintenance. Each phase is self-contained into single epoxy block, significantly reducing phase to phase discharge and risks of internal arc fault.

Modular architecture
1. Modular architecture enables reduction of switchgear dimensions
2. Dimensions of 40.5kV 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.
All Operating Condition Environment
1. Ambient temperature: -50 ℃ ~ +70 ℃;
2. Altitude: ≤ 5500 m
3. Internal and external arcing test report (switches, bus bar, cable compartment) detection
4. Immersion detection test report
5. Salt spray testing report

Product Features & Technical Parameters

Earthing/Disconnecting Switch Assembly
The circuit breaker is composed of mechanism transmission box and circuit breaker poles.

There are three internal cone socket in the poles, among which the 2# cone is used for installing lightning arrester, and the two 3# cone are used for connecting 630A cables.

Unit Module V
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(1min) 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 kA 31.5 31.5 31.5
duration Duration s 4 4 4
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
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