兴安盟ZN63(VBM7)-12 indoor high-voltage vacuum circuit breaker with side mounting
Product Description
Overview
The ZN63(VBM7)-12 side-mounted vacuum circuit breaker is an indoor high-voltage switchgear suitable for three-phase power systems with a rated voltage of 12 kV and a frequency of 50 Hz. It is used as a protective and control device. Due to the special advantages of vacuum circuit breakers, it is particularly suitable for places requiring frequent operation under rated current or multiple breaking of short-circuit current.
The ZN63(VBM7)-12 side-mounted vacuum circuit breaker adopts a fixed installation and is mainly used for fixed switchgear. This circuit breaker can be used independently or in ring network power supply, box-type transformers, or various non-standard power supply systems.
Main Technical Parameters
| Serial Number |
Name |
Unit |
Data |
|||
| 1 |
Rated Voltage |
KV |
12 |
|||
| 2 |
Rated Current |
A |
630-1250 |
1250 |
1250 |
|
| 3 |
Rated Short-Circuit Breaking Current |
KA |
20 |
25 |
31.5 |
|
| 4 |
Rated Short-Circuit Closing Current |
KA |
50 |
63 |
80 |
|
| 5 |
Rated Peak Withstand Current |
KA |
50 |
63 |
80 |
|
| 6 |
4S Rated Short-Circuit Withstand Current |
KA |
20 |
25 |
31.5 |
|
| 7 |
Rated Insulation Level |
1min Power Frequency Withstand Voltage |
KV |
42(48 at the break) |
||
| Lightning Impulse Withstand Voltage (Peak) |
75(65 at the break) |
|||||
| 8 |
Rated Operating Sequence |
Open-0.3S-Close-Open-180S-Close-Open |
||||
| 9 |
Mechanical Life |
Times |
10000 |
|||
| 10 |
Number of Rated Short-Circuit Breaking Current Operations |
Times |
50 |
|||
| 11 |
Operating Mechanism Rated Closing Voltage (DC) |
V |
AC/DC220,110 |
|||
| 12 |
Operating Mechanism Rated Opening Voltage (DC) |
V |
AC/DC220,110 |
|||
| 13 |
Contact Gap |
mm |
11±1 |
|||
| 14 |
Overtravel (Contact Spring Compression Length) |
mm |
3.5±0.5 |
|||
| 15 |
Three-Phase Opening and Closing Bounce Time |
ms |
≤2 |
|||
| 16 |
Contact Closing Bounce Time |
ms |
≤2 |
|||
| 17 |
Average Opening Speed |
m/s |
1.1±0.2 |
|||
| 18 |
Average Closing Speed |
m/s |
0.6±0.2 |
|||
| 19 |
Opening |
Under Maximum Operating Voltage |
S |
≤0.05 |
||
| Time |
Under Minimum Operating Voltage |
≤0.08 |
||||
| 20 |
Closing Time |
s |
0.1 |
|||
| 21 |
Allowable Cumulative Wear Thickness of Moving and Static Contacts |
mm |
3 |
|||
Overall Installation Dimensions
Contact Number：+8613623894894
Contact Number：+8615136360288
Email：13623894894@126.com
Address: No. 1, High-tech Road, Hebin Street Office, Yichuan County, Luoyang City, Intelligent Equipment Industrial Park
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