VW1 12KV Indoor Medium Voltage Embedded-pole Vacuum Circuit Breaker
VW1-12 VCB is a type of indoor high voltage 12KV Vacuum Circuit Breaker, suitable for 3 phase AC,50 Hz, and rated voltage of 12kV, and applied in places with breaking of different load and frequent operations as protection and control unit, such as industrial and mining enterprise, power plants and transformer substations.
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【Next: VW1 Indoor MV 24KV Solid Pole Vacuum Circuit Breaker】
Description

Environmental conditions:

1. Ambient temperature: +40 °C maximum, -15°C minimum

2. Altitude not exceeding 1000m

3. Ambient humidity: daily average not exceeding 95%

daily average saturated vapor pressure not exceeding 2.2kPa

monthly average not exceeding 90%

monthly average saturated vapor pressure not exceeding 1.8kPa

4. The places for working shall be free from dropping water, fire disaster, explosion risk, severe pollution, chemical corrosion and fierce vibration

5. Earthquake intensity no greater than 8 Richter scale

Technical Data:

Item

Unit

Data

Rated voltage

kV

12

Rated insulation voltage

1 min power frequency withstand voltage

kV

50

Lightning impulse withstand voltage(peak)

kV

75

Rated frequency

Hz

42

Rated current

A

630,1250,1600,2000,2500,3150,4000

Rated short-time withstand current

kV

20,25,31.5,40

Rate peak withstand current

50,63,80,100

Rate short-circuit duration

S

4

A.C. component of rate short-circuit breaking current

kA

50,63,80,100

Rated short-circuit making current

kA

50,63,80,100


Advantage:

1. Mechanism:The operating mechanism has simple structure and reliable action. Product parts of different specifications have a great versatility. Because the mechanism is independently developed by us, we can make special products subject to different requests from users. Parts of Vacuum Circuit Breaker are strictly chosen with High Quality.

2. Excellent performance

  • Electrical life: in compliance with Class E2 of circuit breaker, 274 operations in various short circuit currents.
  • Mechanical life: 30000 operations in compliance with Class E2 of circuit breaker
  • Capacitive current making/breaking capacity: Class C2, rated single/back to back capacitor bank breaking current 630/4000 A
  • Rated voltages: 6kV; 12kV; 24kV; 40.5kV.
  • Rated current up to 4000A.

3. Advanced embedding technology and solid-insulating process

Embedded poles: The three embedded poles totally enclose the vacuum interrupter, both upper and lower outgoing terminals cast in epoxy resin in APG process, a very mature automatic pressure gelatinizing technology. This helps to reduce adjustment requirements, diminish possible damage to the VI during assembly and protect connecting bolts against shock during operation. Also, discharge of the terminals can be prevented due to special conductive copper part. The embedded poles, in epoxy resin with unique material, make features of aging resistance, low/high-temperature resistance. These features protect the VI system against any harmful influences from the outer environment. No shock & damp, pollution, condensation, dirt or small animal can ever have a possibility to face the VI, whereas those are always the headaches for the second generation. These distinctive features also enable the embedded poles a greater operating reliability, and high adaptability to various environments. The poles become truly maintenance-free.

Dimension:


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