High voltage 11kV vacuum circuit breaker

Location:
Z, H U
Status:
New
Sample Availibility:
yes
Payment Terms:
Cash, Bank Transfer, Letter of Credit, T/T, L/C

Product Description

High voltage 11kV vacuum circuit breaker

Overview

BRK Series indoor vacuum circuit breakers are applicable to the air-insulation indoor-type cubicle switchboard systems.

BRK Series vacuum circuit breakers can fulfill all kinds of operation of power grid in normal or accidental states, including

short-circuit current closing and opening, so long as regular service conditions are available and the technical parameters

of circuit breakers are not exceeded. In addition, they can also close/open all resistive, inductive and capacitive loads ideally,

and can exhibit excellent performances in harsh environment requiring frequent operation and frequent opening of short-circuit

current.


Applicable sites

BRK Series indoor vacuum circuit breaker is applicable to the indoor power grids of industrial and mining establishments, like

electric systems of airports, railways, metallurgic plant, petroleum enterprises, cement mills, medical institution, coal mines

and chemical industrial enterprises and construction business, with rated voltage of 3.6 ~ 12kV, three-phase alternating current

frequency of 50Hz, rated operating current of 630 ~ 4000A, and short-circuit current ≤ 50kA.

Design features

1.The products are available with 2 types of structures, namely, the compound insulation type structure and solid-encapsulated

cast-type insulati on structure;

2.The product can be fitted into mova ble type cubicle switchboards and stationary type cubicle switchboards.

3.Its outline overall and installing dimensions are compatible with the products VD4, VS1 and ZN 63, and are suitable for all

kinds of leading cubicle types home and abroad.

Operating conditions

Ambient temperature

Not higher than +50°C, not lower than -45°C

Sea-level altitude

≤ 1000m (standard type), or ≤ 2000m and ≤ 3000m (highland type)

Relative humidity of air

Daily mean ≤ 95%, monthly mean ≤ 90%

Saturated vapor pressure

Daily mean ≤ 2.2×10-3Mpa,monthly mean ≤ 1.8×10-3Mpa

Seismic intensity

≤ 8 degrees

Use site

Free of flammable and explosive materials, free of pollution severity, chemical corrosion and

strenuous vibration

Main technical parameters

No.

Parameter name

Unit

Data

1

Rated voltage

kV

12

2

Rated insulation level

1min, power frequency withstand voltage (effective value)

42

Rated lightning impulse withstand voltage (peak value)

75

3

Rated working frequency

Hz

50

4

Rated current

A

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

5

Rated short-circuit opening current

kA

20 25 31.5 40 50

6

Rated short-circuit closing current

50 63 80 100 125

7

Rated peak withstand current

50 63 80 100 125

8

Rated short time withstand current

20 25 31.5 40 50

9

Rated short-circuit current opening times

Times

50

10

Rated duration of short circuit

S

4

11

Rated operating sequence

Opening-0.3S-closing-opening -180S-closing-opening

12

Mechanical life of vacuum arc extinguish chamber

Times

10000 30000 60000

13

Mechanical life of operating mechanism

Times

Spring 60,000/permanent magnetic

100,000

14

Rated opening current of single capacitor bank

A

630

15

Rated opening current of back-to-back capacitor bank

400

16

Rated out-of-phase opening current

kA

7.9

17

Rated opening current of cable charging

A

25

18

Closing/opening operating voltage

V

220V DC/AC 110V DC/AC

Product details

Wanlida Relay Protection Industrial Parks (No.1 and No.2)

Wanlida Electrical Sample Room



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Contact Information

Company:
 Zhuhai Wanlida Electric Co., Ltd.
Phone Number:
  86-756-3395623
Fax Number:
 86-756-3395201