General
Zw32-12y series outdoor high-voltage AC prepaid metering vacuum circuit breaker (hereinafter referred to as "prepaid circuit breaker") is an outdoor high-voltage distribution switchgear with a rated voltage of 12kV and three-phase AC 50Hz. According to the user's requirements, the high-voltage metering box of the prepaid circuit breaker can be a three-phase three-wire system (V / V wiring) or a three-phase West wire system (Y / y.no wiring). The metering current transformer can be a single transformer with a ratio range of (2.5 ~ 1200) / 5
The prepayment circuit breaker body and the high-voltage metering box are designed in an integrated manner. The control box is composed of the prepayment meter and the high-voltage circuit breaker control circuit. It can be installed with a prepayment meter for prepayment measurement according to the user's requirements, and it can also be installed with a YDG power consumption management terminal. The circuit breaker can be directly controlled by the background, and real-time shop parameters and switch status can be queried.
Prepaid circuit breakers comply with GB / T 1984-2014 high voltage AC circuit breakers, DL / T 402-2016 voltage AC circuit breakers, DL / T 403-2000 technical conditions for ordering 12kV ~ 40.5kV high voltage vacuum circuit breakers, and GB / T 20840.2-2014 transformer part 2: supplementary technical requirements for current transformers, GB / T 20840.3-2014 transformer part 3: supplementary technical requirements for electromagnetic voltage transformer and DL / T 403-2013 distribution automation remote terminal and other technical standards.
Model Description
Usage: Environmental Condition
- Altitude: ≤ 1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
- Ambient temperature: -40oC ~ +45oC,
- Maximum daily temperature difference: 25K
- Humidity: Average daily relative humidity: 95%, average monthly relative humidity: 90%.
- Sunshine intensity (at wind speed of 0.5 m / s): not more than 0.1W/cm2
- Wind Speed: 34m/s
- Wind pressure: 700Pa
- Pollution level: e - level
- Icing thickness: Not more than 10mm
- Resistance to floor drain: horizontal acceleration 0.3g, vertical acceleration 0.2g
Main Advantages
1. The overall structure is a three-phase pillar type, with good sealing performance, good moisture-proof and anti-condensation performance;
2. The shell (box) is made of SUS304 non-magnetic stainless steel, which is precision welded and polished by an imported arc welding machine, with a beautiful appearance and never rusts;
3. The integrated design of the high-voltage metering box and the switch body is simple and convenient for installation, and maintenance free and long service life;
4. The price operating mechanism has a novel design, simple structure, reliable action, and small volume;
5. It can realize the functions of three-stage protection, reclosing, remote communication, metering, and prepayment.
Main Technical Parameters
| No. |
Item |
Unit |
Data |
| 1 |
Rated frequency |
Hz |
50 |
| 2 |
Rated voltage |
kV |
12 |
| 3 |
Rated current |
A |
630 / 1250 |
| 4 |
Rated short-time power frequency withstand voltage |
Interphase, to earth(wet) |
kV/min |
34/1 |
| Interphase, to earth(dry) |
42/1 |
| Fracture (dry) |
48/1 |
| Secondary circuit to earth |
2/1 |
| 5 |
Rated lightning impulse withstand voltage |
Interphase, to earth |
kV |
75 |
| Fracture |
85 |
| 6 |
Rated short-time withstand current and duration |
kA/s |
20/4 25/4 |
| 7 |
Rated Short-circuit breaking current(Effective value) |
kA |
20 / 25 |
| 8 |
Rated short-circuit making current(peak) |
50 / 63 |
| 9 |
Rated Peak-withstand current |
50 / 63 |
| 10 |
Main circuit resistance |
Without Isolation Switch |
μΩ |
not less than 80 |
| With Isolation Switch |
not less than 120 |
| 11 |
Rated Short-circuit breaking current breaking times |
Times |
30 |
| 12 |
Rated operating voltage and Rated Voltage for auxiliary(control) circuit |
V |
AC/DC220
DC48, DC24 |
| 13 |
Mechanical life |
Times |
10000 |
| Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. |
Outline And Installation Dimension
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