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ZW20-12 series circuit breaker

ZW20-12 outdoor high-voltage communication vacuum circuit breaker is a commonly developed copier, which is independently developed, mainly used to open, to close load current, overload current and short circuit current in power systems, suitable for substation and indigenous Corporate power distribution systems are protected and controlled, and it is more suitable for rural grids and frequent operations. This switch uses a vacuum mode to arc, SF6 gas insulation, excellent overall sealing, internal charge "zero” table pressure SF6 gas, the possibility of gas leakage, high reliability, maintenance-free.
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ZW20-12 outdoor high-voltage communication vacuum circuit breaker is a commonly developed copier, which is independently developed, mainly used to open, to close load current, overload current and short circuit current in power systems, suitable for substation and indigenous Corporate power distribution systems are protected and controlled, and it is more suitable for rural grids and frequent operations. This switch uses a vacuum mode to arc, SF6 gas insulation, excellent overall sealing, internal charge \"zero\" table pressure SF6 gas, the possibility of gas leakage, high reliability, maintenance-free.


NameunitEnvironmental value
Amazing air temperatureMaximum temperature+50

Minimum temperature
--20

Maximum temperature differenceK30
altitudem≤3000
Solar radiation intensityW / cm20.1
Contamination
Ice thicknessmm10
humidityDaily relative humidity average%≤100

Monthly relative humidity average
≤95
Tolerate earthquake≤8






Rated voltageKV12
Rated currentA630
CT parameters
Customized according to customer requirements
Rated frequencyHz50
Rated short (1min) power frequency tolerance voltage (on ground / broken)KV42/48
Rated lightning impact tolerance voltage (on ground / broken)KV75/85
Rated short circuit opening currentka20/25
Rated short-circuitry current (peak)ka50/63
Rated short-term resistance (4S)ka20/25
Rated peak toleranceka50/63
Rated short-circuit current break30
Operating agency
Spring (permanent magnet)
Vacuum circuit breaker mechanical life1000 (30000)
Enclosure rating
IP67
Annual leaf rate%<0.01


Flexible, convenient: This product can be electrically accommodated, electricity, closing, can also be manually stored, manual, closing, and can be closely or long distance remote control operations;

High operation power, high reliability;

Flexible installation, can be lifted or sithed in the column;

With maintenance characteristics, circuit breaker main circuits, secondary components, and operating mechanisms are sealed in SF6 gas (zero-surface pressure), which is not affected by the external environment, stable performance, reliable, maintenance;

The sealing performance is reliable, using mature sealing structures, and the sealing is reliable;

The in-line insulation performance is excellent, and the silicone rubber sleeve is used, so that the insulation space between the terminals is abundant, and the external insulation performance is safe;



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