Overview of ZW10-12 Vacuum Circuit Breaker:
ZW10-12G/T630-12.5/16/20 outdoor high-voltage vacuum circuit breaker is a three-phase AC outdoor high-voltage switchgear mainly used in the distribution systems of rural, urban, mining, railway, and port power grids with a rated current of 630A and a rated frequency of 50HZ at the 12KV level. It is particularly suitable for outdoor overhead power lines to switch and protect the power grid by handling load current, overload current, and short-circuit current.

ZW10-12 vacuum circuit breaker model and meaning:

Service conditions for ZW10-12 vacuum circuit breaker:
a. Environmental temperature -40 ℃ to+40 ℃;
b. The altitude shall not exceed 2000mm, and any altitude above 2000mm shall be negotiated with the user;
c. Wind pressure not exceeding 700Pa is equivalent to a wind speed of 34m/s;
d. The daily average relative humidity should not exceed 95%, and the monthly average should not exceed 90%
e. Air pollution level III;
f. The surrounding air should not be significantly polluted by corrosive or flammable gases;
g. No frequent vigorous exercise;
h. As an insulating medium, silicone rubber should comply with the requirements of GB655386 for the intended use.
Main technical parameters
3.1 Rated Parameters

serial number
project
unit
Parameters
1
rated voltage
KV
12
2
rated current
A
630
3
rated frequency
HZ
50
4
Power frequency withstand voltage
KV
42/48
5
Lightning impulse voltage (peak value)
KV
75/85
6
Rated short-circuit breaking current
KA
6.3
12.5
16
20
7
Peak rated short-circuit closing current
KA
16
31.5
40
50
8
Rated short-time withstand current
KA
6.3
12.5
16
20
9
Rated peak withstand current
KA
16
31.5
40
50
10
Rated operating sequence

Split -0.3S - Split -180S Split
11
Rated short-circuit current breaking times
time
30
12
mechanical life
time
10000
13
Allowable cumulative thickness of wear for moving contacts
mm
3
4
14
Rated operating voltage
Equipped with CT type spring operating mechanism
closing coil
V
DC or AC 220V
trip coil
15
Rated working current of overcurrent trip coil
A
5
16
Current transformer primary and secondary current ratio

100/5.200/5.300/5.400/5.630/5
17
energy storage motor
Customized voltage
V
DC or AC 220V
power
W
≤200
18
weight
Kg
150
3.2 Mechanical Parameters

serial number
project
unit
Parameters
1
Contact opening distance
mm
11±1
2
Contact stroke
mm
3±0.5
3
Average opening speed
m/s
1±0.2
4
Average closing speed
m/s
0.8±0.2
5
Closing bounce time
ms
≤3
6
Three phase opening synchronicity
ms
≤2
7
Synchronization of three-phase closing
ms
≤3
8
Closing time
ms
40-60
9
Opening time
ms
30-50
10
Main circuit resistance of each pole
ms
≤200
11
Interphase center distance

220±1.5
12
Length of contact spring in closed state
mm
25.5
3.3 Technical data of isolation switch

serial number
project
unit
data
1
rated voltage
KV
12
2
rated current
A
630
3
Effective value of 4s thermal stability current
KA
20
4
Peak value of dynamic stable current
KA
50
5
1.2/50 μ s peak full wave impulse voltage
KV
Relative 75 fracture surface 85
6
1-minute power frequency withstand voltage
KV
42
7
Resistance of each phase conductive circuit
μ Omega
≤60
8
Manual closing torque
Nm
≤150
9
The position of the blade just closed is skewed
mm
≤2
10
Insulation distance between conductive parts and ground
mm
≥160
11
Fracture distance
mm
≥200


Appearance and installation dimensions

Ordering Notice:
When placing an order, the user should provide the model, name, quantity, current ratio, specifications, quantity, and accuracy level of the current transformer for the breaking current of the product, as well as whether a transition frame is installed and the height dimension of the transition frame. When ordering for the renovation of old stations, users should specify the original installation dimensions of the old station.
After-sales service
Our company adheres to the spirit of quality, efficiency, and development, with the concept of high-quality products and thoughtful services. We solemnly promise to you publicly and responsibly as follows:
1. The minimum warranty period for all products sold by our factory is one year, and some products have a three-year warranty. During the warranty period, free on-site repairs are provided, except for malfunctions or damages caused by human factors or uncontrollable natural phenomena.
2. Upon receiving the repair notice, arrive at the scene within seven working days and resolve the issue.
3. Users can consult technical issues through after-sales telephone and obtain clear solutions.
When users experience performance failures during normal use, our company promises the above warranty services. In addition, if there are clear provisions in the applicable laws and regulations of the country, our company will comply with the relevant laws and regulations.
During the warranty period, paid repair services will be provided for the following situations:
Damage caused by human or uncontrollable natural phenomena.
Malfunctions or damages caused by improper operation.
Malfunctions or damages that occur due to modifications, disassembly, or assembly of the product