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Hubei Dayu Hanguang Vacuum Electric Co.,Ltd.
CN EN

Embedded Poles

Embedded Poles

Product details

HEP-12 1250-25A 12 630-25A.jpg

HEP-12 1250-25A 12 630-25A-2.jpg

Main Technical Parameter
Rated voltage12kV
Rated current630/1250A
Rated frequency50Hz
Rated short-time Power frequency withstand voltage48kV
Rated lightning impulse withstand voltage85kV
Rated short-circuit breaking current25kA
Rated short-circuit making current(peak)63kA
Breaking operations of rated short circuit breaking current30 times
Rated breaking current of single capacitor bank630A
Rated short-time withstand current25kA
Rated peak withstand current63kA
Rated duration of short-circuit4 s
Mechanical endurance10000 times
Closing force due to bellow and atmosphere140±50N
Force required to hold contacts open at full storke230±50N
Circuit resistance at lowest rated contact force≤25μ?
Contacts limit erosion3mm
MECHANICAL DATA REQUIRED FOR THE MATCHED VACUUM SWITCHGEAR
Clearance between open contacts11±1 mm
Average opening speed1.2±0.2m/s
Average closing speed0.6±0.2m/s
Rated added extemal contact final force2500±200N
Contact bouncing duration at closing operation≤2 ms
Closing and opening non-simultaneity of three-phase contacts≤2 mm

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