enerswit 12/24kv sf6 gas insulated ring main unit
- description
- characteristic
- parameter
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the key component of enerswit ® series of sf6gas insulated ring main unit adopt a patented rotary load switch and a super low resistance of the vacuum circuit breaker. the live parts are sealing in a stainless steel gas tank which is filled with sf6gas, isolate with the outside environment. it ensures the switch devices and all live parts in the gas tank which aren’t affected by external environment fluctuations to realize the equipment maintenance-free , improve power supply reliability, enhance the personnel safety and meet the needs of economic stable operation.
enerswit ® series of sf6gas insulated ring main unit is widely used in urban distribution network, intelligent micro grid, commercial real estate, municipal engineering, light industry, residential area and so on. it practices the concept of economic reliability and create value for customers persistently.
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enerswit series of sf6gas insulated ring main unit for 12/24kv standardized designed bases on the same platform, compact and reliable.
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sf6gas insulation.
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rated voltage for 12kv,24kv.
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all live parts are sealing in a stainless steel tank which is filled with sf6gas.
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withstand internal arc faults ability.
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the earthing switch has ability to the short circuit making current.
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mechanical interlock ensures correct and reliable sequential operation.
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the primary devices are completely sealing in a gas tank so as to suit for distribution places where salt mist, moisture or pollution is easy to occur.
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cabinet width for 360mm, 450mm and 500mm*, compact structure, lightweight design, saving floor area.
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adopt all-mental and all-seal, modular design ideal, realize maintenance free for whole life period.
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enerswit series of sf6gas insulated ring main unit for 12/24kv standardized designed bases on the same platform, compact and reliable.
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type
c unit
t unit
d unit
rated voltage（kv）
12/24
12/24
12/24
rated current（a）
630
125
630(1250)/630
rated short-time withstand current(ka/s) 4s
20/20
20(25)/20
rated short circuit making current (peak) （ka）
50
50(63)/50
electric endurance
e3/e2
e2/e2
rated short-circuit breaking current (ka)
31.5
20(25)ka/1s
earthing switch short-circuit making capacity
e2/e2
e2/e2
iac
20ka/1s
20(25)ka/1s
circuit breaker mechanical endurance（times）
10000/10000
disconnecting switch mechanical endurance（times）
5000/5000
load break switch mechanical endurance（times）
5000/5000
5000/5000
earthing switch mechanical endurance（times）
3000/3000
rated short-duration power-frequencywithstand voltage (isolating) kv
48/79
rated short-duration power-frequencywithstand voltage (common) kv
42/65
rated lightning impulsewithstand voltage (isolating) kv
85(110)/145
rated lightning impulsewithstand voltage (common) kv
75(95)/125
annual leakage rate (%/ year)
0.01%
ip class
ip68、ip4x
dimension (mm)
360×755×1350
450×755×1350
360×755×1525
450×755×1525
360×755×1350
360×755×1525
500*
360×755×1350
450×755×1350
360×755×1525
450×755×1525
500*×755×1525