- Description
- Characteristic
- Parameter
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The core unit of Enerswit+ 40.5kV series SF6 gas insulated RMU uses self-energized load switch, vacuum circuit breaker with ultra-low resistance and primary live parts, which are sealed in a stainless steel air tank fully filled with SF6 to isolate with the outside, ensuring that the switchgear and all live parts in the air tank will not be affected by the outside environment. This exempts the unit from maintenance, improves the reliability of power supply, enhances personal safety and meets the needs of economic and reliable operation.
Enerswit+ series of SF6 gas insulated RMU is widely used in Onshore/offshore wind farms, Medium and large photovoltaic power stations, Small medium voltage substation, Industrial enterprises, Large buildings and venues and so on . It practices the concept of economic reliability and create value for customers persistently.
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Technical feature
• Enerswit+ series is standardized based on the same platform, compact and reliable;
• SF6 gas isolated;
• Rated voltage: 40.5kV;
• All primary live parts are sealed in a stainless steel air tank fully filled with SF6;
• Resistance to internal arc fault;
• Earthing switch has earthing making capacity;
• With mechanical interlocking, ensuring correct and reliable sequential operation;
• All primary devices are sealed in a stainless steel air tank, applicable to the distribution sites with salt mist, moisture or susceptible to contamination;
• 450/550mm* wide, compact, light-weight, saving occupation area;
• Designed based on a full-metal, full-seal, and modular concept, achieving a whole life cycle of primary live equipment maintenance free. -
Model
C Load Switch
D Vacuum Circuit Breaker
Rated voltage (kV)
40.5
40.5
Rated current (A)
630
630
Rated withstand current (kA/s) 4s
20
25、31.5
Rated short circuit making current (peak) (KA)
50
63、80
Electrical endurance (times)
E2
E2
Rated short circuit breaking current (kA)
25、31.5
Mechanical life of circuit breaker (times)
10000
Mechanical life of disconnector (times)
5000
Mechanical life of load switch (times)
5000
Mechanical life of earthing switch (times)
3000
5000
Power frequency withstand voltage (across the Isolating
distance) kV118
118
Power frequency withstand voltage
(common value) kV
95
95
Lightning impulse voltage
(across the Isolating distance) kV
215
215
Lightning impulse voltage (common value) kV
185
185
Annual leakage rate (%/year)
≤0.01
≤0.01
Degrees of protection
IP68
IP68
Cabinet size mm
450×850×1850
450（550）×850×1850