VT1-12 (ZN28B-12) Indoor AC HV Vacuum Breaker Circuit
VT1 is ZN28B-12(VT1A-12) Series AC HV Indoor Vacuum Circuit breaker is the product, with three phase, AC 50Hz, rated voltage 12KV. It is up to requirement of "AC HV Circuit breaker" , JB3855-96 "3.6-40.5KV Indoor AC HV Circuit Breaker" .
VT1 Series has the capability of multi-breaking and faster reclosing for the frequent operation.
The latest developed patent mechanism CT-T1 is fitted in the product. It can be mounted in the GG1A, XGN series HV Fixed Switchgear by two ways, standing or suspending.
The product can be used at 4000m elevation level.
Technical parameter of VT1-12 (ZN28B-12) Indoor AC HV Vacuum Breaker Circuit:
|
NO
|
NAME
|
UNIT
|
VT1-12/T630
(1250)-12.5
|
VT1-12/T630
(1250)-20
|
VT1-12/T1250
(1600,2000)-31.5
|
|
1
|
Rated voltage
|
KV
|
12
|
|
|
|
2
|
Rated current
|
A
|
630 1250
|
630 1250 1600
|
1250 1600
|
|
3
|
Rated short-circuit breaking current
|
KA
|
50
|
|
4
|
Rated short-circuit making current
|
KA
|
42
|
|
5
|
Rated peak withstand current
|
KA
|
75
|
|
6
|
Rated short-time withstand current
|
KA
|
20
|
25
|
31.5
|
|
7
|
Rated short-circuit lasting time
|
S
|
20
|
25
|
31.5
|
|
8
|
Rated short-circuit breaking current times
|
TIMES
|
50
|
63
|
80
|
|
9
|
Rated operative sequence
|
|
50
|
63
|
80
|
|
10
|
Rated 1minpower frequency withstand voltage
|
KV
|
4
|
|
11
|
Lightning impulse withstand voltage
|
KV
|
30
|
|
12
|
The resistance of primary circuit
|
¦Ì¦¸
|
OFF-0.3s-ON/OFF-180s- ON/OFF
|
|
13
|
Mechanical Endurance
|
TIMES
|
10000
|
|
14
|
Operational capacity
|
Nm
|
5
|
6.25
|
7.9
|
Notes for ordering :
Please indicate while ordering:
a. Name, type, specifications and quantity;
b. Rated voltage, rated current and rated short-circuit breaking current;
c. Functions required and installation way;
d. Rated operative voltage;
e. Name and quantity of the accessories;
f. Please give instruction if you have special requirements.
Your cart is empty
