products detial
What we can do ? different country different requirement all we can offer.
Mid-voltage ( kV) | 3.6~35kv (E.g. 35,33,24,22,20,18,15.75,13.8,13.2,12,11,10.5,10,7.2,6.6,6.3,6 etc.) |
To Low voltage ( V) | 100-660V (E.g. 100,110,115,120,127,208,200,220,230,240,346,380,400,410,415,440,480,660 etc.) |
Frequency (HZ) | 50Hz or 60Hz |
ZW8-12 / 630-20 outdoor high voltage vacuum circuit breaker
1、 Overview
Using vacuum arc extinguishing chamber, air insulation, equipped with electric spring operation mechanism, making the product has strong arc extinguishing capacity, high short circuit opening times, no fire and explosion risk, convenient operation, is a kind of good performance and practical products.
The overall structure of the product adopts three-phase box type, sleeve access line and dry air. The electric spring operation mechanism is arranged on the side of the box, and can be reliably used under harsh environmental conditions.
The vacuum arc extinguishing chamber adopts ceramic shell, cup-shaped longitudinal magnetic field contact structure, copper-chromium contact material, with excellent on-off and off-off short-circuit current capacity.
The product is small, light weight and beautiful exterior.Vacuum arc extinguishing chamber and insulation support sleeve is compact design, the outlet conductor rod external injection of silicone rubber, can adapt to the harsh climate conditions and dirty environment.
2、 Model and description
ZW 8-12/630 - 20
20 - short circuit breaking current (KA)
630- rated current (a)
12 - rated voltage (kV)
8 - Design serial number
W - Outdoor
Z-vacuum
3、 Technical parameters
Rated voltage | 12kV |
Rated current | 630A |
Workfrequency pressure resistance | 42kV/48kv |
Lightning impact pressure resistance (peak) | 75kV/85kV |
Rated short-circuit open off current (valid) | 20kA |
Rated short-circuit turn-off current (peak) | 50kA |
Rated operation order | Opening-0.3S Closing/Opening-180S Closing/Opening |
Rated short-circuit current open open times | 30times |
Mechanical life | 10000 times |
Rated operating voltage (close / switch coil) | DC220v Ac220v |
Allowable wear thickness of moving and static contacts | 3mm |
Isolation breakport disconnection distance | >200mm |
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