LYC3K Series 12kV RMU SF6 insulated ring main unit switchgear

SWITCHGEAR Rated voltage: 12/24/40.5kv; SWITCHGEAR Rated current: 630A,1250A; Breaking current: 31.5KA; Frequency: 50Hz or 60Hz;

Description

Standard:

NATIONAL STANDARD: GB11022
GB3906
GB1984
GB3804
GB16926

INTERNATIONAL STANDARD: IEC60376
IEC60298
IEC60420
IEC60282
DIN VDE0670
IEC60129
IEC60265-1
IEC60694
IEC60056

Technical parameters :

Project	Cable feeder	Transformer feeder	Breaker V unit
Rated voltage	12/24	12/24	12/24
Rated frequency	50 or 60	50 or 60	50 or 60
Rated insulation level
Power frequency withstand voltage	50/60	50/60	50/60
Lightning impulse withstand voltage	125/145	125/145	125/145
Rated current	630	≤125 Note1	630
Breaking closing ability
Rated active load breaking current	630		630
Active load breaking current	31.5		31.5
Rated cable charging breaking current	10		10
Rated breaking current transfer		2700
Rated short-circuit breaking current		Note2	20
Rated short-circuit current	50		50
Dynamic thermal stability capabilities
Rated short time withstand current	20		20
Rated short duration	3		3
Rated peak withstand current	50		50
Mechanical life Times	3000	3000	3000
Other
Ambient temperature ℃	-40 ~ +60	-40 ~ +60	-40 ~ +60
Gas pressure...℃ when the gauge...	0.03	0.03	0.03
Degree of protection	IP67 Gas tank IP67