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KYN61-40.5
1.General Description:
KYN61-40.5 electrical cabinet is complete indoor power distribution equipment for --phase AC 50Hz and ratedvoltage of 40.5KV. The cabinet is used for power accaeptance and distribution circuit control, protection and detection etc. in power platns, transformer substaions or industrial and mining establishments.It accords with IEC298,IEC694,GB3906,DL404 and DIN.VDE0670.
2.Working condition:
1.Ambient temperature;-10℃----+40℃
2.Relative humidity:daily average ≤95%,monthly average ≤90%
3.Seismic intensity ：≤8
4.Altitude：≤1000m；（Not including special requirement）
5.Service environment：should be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration
Uses should discuss with supplier if working condition exceed above range.
3.Technical data
Item | Unit | Data | |
Rated voltage | kV | 40.5 | |
Rated frequency | Hz | 50 | |
Rated current | A | 630,1250,1600,2000,2500 | |
Rated short time withstand current（4S） | kA | 20,25,31.5 | |
kA | 50,63,80 | ||
Rated short circuit breaking current | kA | 20,25,31.5 | |
Rated short circuit making current(peak) | kA | 50,63,31.5 | |
Rated insulation levels | Rated power frequency withstand voltage/1min | kV | 95 |
Rated lighting impulse withstand voltage | kV | 185 | |
Level of protection | Shell IP4X,(IP2X after opening door of insulating room& circuit breaker room)
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4.Structure of switchgear
Circuit breaker series 
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