ZN28BI-12 Indoor AC HV Vacuum Circuit Breaker
ZN28BI-12 Indoor AC HV Vacuum Circuit Breaker is indoor equipment with three-phase of AC 50HZ and 12KV rated voltage, can be used to protect and operate the apparatuses in the industrial and mining enterprises, the distribution system, especially in the situation that requires no oil, little maintenance and frequent operation.
Features of ZN28BI-12 Indoor AC High Voltage Vacuum Circuit Breaker :
a. Circuit breaker and its controlling mechanism form integration;
b. Perfect in structure, stability and reliability in operation;
c. Long service time, easy maintenance, and no danger of bombing, no pollution, low noise;
d. Fitted in the handcart box or fixed box;
e. The capacity of opening, breaking frequently and closing quickly;
f. Especially used in the places of frequent operation;
Technical Parameter:
|
NO
|
ITEM
|
UNIT
|
DATA
|
|
1
|
Rated voltage
|
KV
|
12
|
|
2
|
Rated short-circuit breaking current
|
KA
|
20
|
25
|
31.5
|
40
|
|
3
|
Rated current
|
A
|
630
1250
|
630
1250
|
1250
1600
2000
2500
|
1600
2000
2500
3150
|
|
4
|
Rated short-time withstand current
|
KA
|
20
|
25
|
31.5
|
40
|
|
5
|
Rated peak withstand current
|
KA
|
50
|
63
|
80
|
100
|
|
6
|
Short making current
|
KA
|
50
|
63
|
80
|
100
|
|
7
|
Rated power frequency withstand voltage
|
KV
|
40
|
|
|
|
|
8
|
Rated lightning impulse withstand voltage
|
KV
|
75
|
|
9
|
Mechanical endurance
|
Times
|
10000
|
|
10
|
Pitch distance between phases
|
Mm
|
210,230,250,275
|
Notes for ordering:
Please indicate the following items while ordering;
a. Model, name, rated voltage, rated current and rated breaking current of the product;
b. Model, name, closing voltage and opening voltage of the control mechanism;
c. Model, name, and rated voltage of the over-voltage protecting components.
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