VS1-12 Side-Mount Indoor High-Voltage AC Vacuum Circuit Breaker
Category:
Product Description
Product Overview
The VS1 (ZN63A) side-mounted indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an indoor switchgear designed for 12kV power systems, serving as a protection and control unit for grid equipment and power equipment in industrial and mining enterprises. Due to the unique advantages of vacuum circuit breakers, they are particularly well suited for applications that require frequent operation under rated working current or for circuits that need to interrupt short-circuit currents multiple times.
The circuit breaker adopts an integrated design that combines the operating mechanism with the circuit breaker body, serving as a fixed installation unit. The fixed-type circuit breaker can be equipped with corresponding interlocks to meet the requirements of fixed switchgear such as HXGN.
Product Model and Meaning
Terms of Use
1. Ambient air temperature: -15°C to +40°C; (storage and transportation are permitted at -30°C).
2. Wind speed ≤ 35 m/s;
3. Altitude ≤ 1000 m;
4. Environmental Humidity: Monthly average relative humidity ≤ 90%; daily average relative humidity ≤ 95%.
5. Seismic intensity ≤ 8 degrees;
6. The surrounding air is not obviously contaminated by dust, smoke, corrosive or flammable gas vapors, or salt spray.
Note: For conditions beyond the above-mentioned normal operating environment, please consult with the manufacturer.
Main Features
1. The circuit breaker adopts a three‑column design with a phase spacing of 210 mm, featuring a compact external footprint that makes it easy to install inside high‑voltage switchgear such as XGN12‑12, and it can share the main busbar with load switches.
2. The operating mechanism is integrated with the circuit breaker, mounted on the mechanism side and arranged in a rear–middle–front configuration relative to the three-phase arc extinguishing chambers. The operating mechanism is easy to maintain, features a simple structure with few adjustment steps, and fully ensures the mechanical characteristic parameters of the arc extinguishing chambers. With a mechanical life exceeding 10,000 operations, the circuit breaker delivers high reliability, high stability, high safety, and minimal maintenance requirements.
3. Oil-free operation, no environmental pollution;
4. The vacuum arc extinguishing chamber uses copper-chromium contact material and a longitudinal magnetic field contact structure, offering advantages such as strong breaking capacity, high insulation strength, low current chopping, minimal burn damage, long electrical life, and maintenance-free operation throughout its service life.
Main Technical Parameters
|
Serial Number |
Name |
Unit |
Data |
|||
|
1 |
Rated Voltage |
kV |
12 |
|||
|
2 |
Rated Insulation Level |
Rated short-time power frequency withstand voltage (1 min) – Rated lightning impulse withstand voltage (peak) |
kV |
42 75 |
||
|
3 |
Rated Frequency |
Hz |
50 |
|||
|
4 |
Rated current |
A |
630
1250 |
630
1250 |
630 1250 1600 |
|
|
5 |
Rated short-circuit breaking current |
kA |
20 25 31.5 |
|||
|
6 |
Rated Short-Circuit Making Current (Peak) |
kA |
50 63 80 |
|||
|
7 |
Rated Dynamic Stability Current (Peak) |
kA |
50 63 80 |
|||
|
8 |
Rated Short-Circuit Breaking Current Number of Operations |
Next |
50 20 |
|||
|
9 |
Rated Operating Sequence |
|
O-0.3s-CO-180s-CO |
|||
|
10 |
Rated breaking current for single/back-to-back capacitor banks |
A |
630/400 |
|||
|
11 |
Mechanical life |
Next |
10000 |
|||
|
12 |
Contact opening distance |
mm |
11±1 |
|||
|
13 |
Contact travel |
mm |
3.5 ± 0.5 |
|||
|
14 |
Main Conduction Circuit Resistance |
microohm |
≤50 (630A) ≤45 (1250A) ≤35 (1600A) |
|||
|
15 |
Closing time |
|
≤100 |
|||
|
16 |
Allowable cumulative wear thickness of moving and stationary contacts |
mm |
3 |
|||
Ordering Instructions
Users should specify when placing an order.
a. Circuit breaker model, name, and ordered quantity;
b. The circuit breaker’s rated voltage, rated current, and rated short-circuit breaking current;
c. Rated operating voltage;
d. Names and quantities of spare parts and components;
e. If users have any other special requirements, they may specify them when placing an order.
Keywords:
VS1-12 Side-Mount Indoor High-Voltage AC Vacuum Circuit Breaker
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Email:
Address:
East of the 22nd Avenue and south of Fengda Road, Zhengzhou Economic and Technological Development Zone
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