Introduction:
Bushings
are insulated devices that allow an electrical conductor to pass safely through
a grounded conducting barrier such as the case of a transformer, circuit
breaker or a switchgear. Our company offers different types of electric
bushings for indoor or out door uses.
Product
dimensional drawings:
Main
technical parameters of the product:
|
Rated voltage
|
12kV
|
|
Rated current
|
1250A
|
|
Rated frequency
|
50Hz
|
|
Rated short-circuit breaking current
|
31.5kA
|
|
Rated short-circuit breaking current breaking times
|
50 Times
|
|
Rated short circuit closing current
|
80kA
|
|
Rated peak withstand current
|
80kA
|
|
Rated short-time withstand current (4S)
|
31.5kA
|
|
Rated single capacitor bank breaking current
|
630A
|
|
Rated back-to-back capacitor bank breaking current
|
400A
|
|
Short-duration power frequency withstand voltage (1min)
|
48kV
|
|
Lightning impulse withstand voltage (peak)
|
85kV
|
|
Loop resistance at rated contact pressure
|
≤26μΩ
|
|
Mechanical life
|
30,000 Times
|
|
Contact allows wear thickness
|
3mm
|
|
Contact self-closing force
|
120±50N
|
|
Contact reaction force at rated opening distance
|
210±50N
|
|
Storage period
|
20 years
|
|
Partial discharge
|
≤3Pc
|