Yongce Group Co., Ltd.
Complete Product Introduction of ZN63(VS1)-12G
1. Product Brief Introduction
The ZN63(VS1)-12G series enclosed pole type high-voltage vacuum circuit breaker is an indoor high-voltage switchgear for three-phase power systems with a rated voltage of 12kV and a frequency of 50Hz, which is used for power transmission and control in power systems. Due to the special advantages of vacuum circuit breakers, it is especially suitable for places that require frequent operation under rated current or multiple times of breaking short-circuit current.
The ZN63(VS1)-12G series enclosed pole type high-voltage vacuum circuit breaker adopts fixed installation, which is mainly used for fixed switch cabinets. The circuit breaker can be used alone, and also can be used in ring network cabinets, box-type substations or various non-standard electrical systems.
2. Model Meaning & Explanation
The coding of the product model contains the core structural characteristics and parameter information of the vacuum circuit breaker. The specific meaning of each part of the model is as follows:
- Z: Vacuum circuit breaker
- N: Indoor type
- 63: Design serial number
- 12: Rated voltage (kV)
- G: Enclosed pole
- /□: Operating mechanism code (T for spring operating mechanism)
- -□: Rated current (A)
- -□: Rated short-circuit breaking current (kA)
3. Normal Operating Environment
- Ambient temperature: not higher than +40℃, not lower than -15℃ (allowed to be transported at -30℃);
- Altitude: not exceeding 1000m;
- Relative humidity: daily average value not more than 95%, monthly average value not more than 90%, daily average value of saturated water vapor pressure not more than 2.2×10⁻³MPa, monthly average value not more than 1.8×10⁻³MPa;
- Earthquake intensity: not exceeding 8 degrees;
- Service place: no places with fire, explosion, serious pollution, chemical corrosion and severe vibration.
4. Product Characteristics
- Adopt enclosed pole structure, with high insulation performance and strong environmental adaptability;
- Fixed installation mode, suitable for fixed switch cabinets, ring network cabinets and box-type substations;
- Excellent vacuum arc-extinguishing performance, suitable for frequent operation and multiple short-circuit current breaking;
- Reliable performance and simple maintenance, can be used alone or in various electrical systems;
- Meet the use requirements of 12kV, 50Hz three-phase power system for power transmission and control.
5. Main Technical Parameters
| Serial No. | Item | Unit | Parameter |
|---|---|---|---|
| 01 | Rated voltage | kV | 12 |
| 02 | Rated insulation level - Rated lightning impulse withstand voltage peak value | kV | 75 |
| 03 | Rated insulation level - 1min power frequency withstand voltage | kV | 42 |
| 04 | Rated short-circuit breaking current | KA | 20/25, 31.5 |
| 05 | Rated current | A | (630, 1250), (630, 1250, 1600) |
| 06 | Rated thermal current (effective value) | KA | 20/25, 31.5 |
| 07 | Rated making current (peak value) | KA | 50/63, 80 |
| 08 | Rated short-circuit making current (peak value) | KA | 50/63, 80 |
| 09 | Number of rated short-circuit breaking current operations | times | 50 |
| 10 | Secondary circuit withstand voltage (1min) | V | 2000 |
| 11 | Rated operating sequence | - | 0-0.3s-CO-180s-CO |
| 12 | Rated thermal stability time | s | 4 |
| 13 | Rated single 1 back-to-back capacitor bank breaking current | A | 630/400 |
| 14 | Mechanical life | times | 10000 |
6. Outline & Installation Dimensions
7. Ordering Notes
When ordering ZN63(VS1)-12G enclosed pole type high-voltage vacuum circuit breaker, please provide the following information to ensure the product meets the actual application requirements:
- Exact product model (including rated current, rated short-circuit breaking current, operating mechanism type);
- Installation scenario (fixed switch cabinet, ring network cabinet, box-type substation, etc.);
- Special environmental requirements (such as altitude, temperature, earthquake intensity, etc.);
- Special technical requirements (if any, such as customized accessories, non-standard size, etc.).
