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ZW7 Vacuum Circuit Breaker

Storage, making and breaking by motor, It can operating by handle.
Breaking short-circuit current up to 25kA.
Mini motor spring mechanism (about 30W).
Installation method: adopt two type installation method.
Sealing performance: adopt reliable sealing technical.
Incoming & Outgoing method:adopt silicon bushing to make enough insulate distance
Safe operating: there is an equipment to protect explosion.

Specifications:

Description:
Type ZW7-36 outdoor high-voltage vacuum circuit breaker is a kind of outdoor high-voltage switchgear under three-phase AC 50Hz, 36kv rated voltage and below. It can be used to switch on and off the loading, overloading and short-circuit current.

Features:

1. Storage, making and breaking by motor, It can operating by handle.

2. Breaking short-circuit current up to 25kA.

3. Mini motor spring mechanism (about 30W).

4. Installation method: adopt two type installation method.

5. Sealing performance: adopt reliable sealing technical.

6. Incoming & Outgoing method: adopt silicon bushing to make enough insulate distance.

7. Safe operating: there is an equipment to protect explosion.

Techincal data:


No.

Item

Unit

Data

1

Rated voltage

KV

               36

2

Rated current

A

  1250,1600,2000

3

Rated short-circuit breaking current

KA

         20,25,31.5

4

Rated insulation level

Power frequency withstand voltage 

Dry

KV

               95

Wet

KV

               80

Lightning impulse withstand voltage (peak value)

KV

              185

5

Rated operating sequence


O-0.3s-CO-180s-CO

6

Rated  capacitor group breaking current

A

              400

7

Rated short-circuit breaking current

Time

               20

8

Rated peak withstand current

KA

         50,63,80

9

Rated short - time withstand current

KA

        20,25,31.5

10

Rated Short-circuit Continuing Time

S

                4

11

Machinery life

Time

            10000

12

Permissible gross wearing thickness  for dynamic/static contacts

mm

                3

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