Our factory
We are professional manufacturer of current transformer ,voltage transformer, Vacuum Circuit Breakers/Recloser,Isolation switches,Dropout Fuse Cut-out,Lightning Arresters,High and Low Voltage Cabinets,Metering Devices,Power Distribution Transformers etc.
GENERAL
ZW8-12Y series Outdoor High-Voltage AC prepaid metering vacuum circuit breaker (hereinafter referred to as "prepaid circuit breaker") is applicable to the power system with three-phase AC 50Hz and rated voltage of 12kV. As integrated switch equipment, it is matched with the three-phase multi-function meter to realize the breaking and closing of the load current, overload current, and short-circuit current of the distribution system, and has a high-precision high-voltage metering device to realize the active and reactive energy meters, All measurement, settlement and bookkeeping functions of active power demand meter, power factor meter, prepayment meter, and multi-rate meter can be flexibly preset with multi-function overload alarm, automatic power failure, phase loss alarm, recording, and automatic meter reading.
Prepaid circuit breakers comply with GB / T19842014 high voltage AC circuit breakers, DL / T 402-2016 high voltage AC circuit breakers, DL / t4032000 technical conditions for ordering 12kV ~ 40 high voltage vacuum circuit breakers, GB / T 20840.2-2014 transformer part 2: supplementary technical requirements for current transformers GB / T 20840.32014 inductance part 3: supplementary technical requirements for electromagnetic voltage transformer and DL / T 721-2013 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: 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
☆ the overall structure is a three-phase common box structure, the box body is dry air, and the spring operating mechanism is arranged on the side of the box.
☆ the voltage transformer and the current transformer are installed inside the box, with the advantages of high measurement accuracy, low self-loss, no noise, strong insulation performance, and maintenance-free.
☆ it has the advantages of being explosion-proof, anti-condensation, anti-pollution, and no environmental impact.
☆ the body can be equipped with an isolating switch, and the interlock device is installed between the two, with obviously visible fracture, which effectively improves the safety of product maintenance and overhaul.
☆ it can realize three-stage protection, zero sequence grounding protection, reclosing, and remote communication.
MAIN TECHNICAL PARAMETERS
Main Technical Requirements Of Vacuum Circuit Breaker Body
| 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 than120 |
| With Isolation Switch |
not less than 200 |
| 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. |
Main Technical Parameters of High-Pressure Metering Part
| No |
Item |
Unit |
Data |
| 1 |
Rated frequency |
Hz |
50 |
| 2 |
Power Factor |
|
0.8 () |
| 3 |
Rated Primary Voltage |
Three-phase three-wire system |
kV |
10 |
| Three-phase four-wire system |
10/ |
| 4 |
Rated Secondary Voltage |
Three-phase three-wire system |
0.1/0.22 |
| Three-phase four-wire system |
(0.1/)/0.22 |
| 5 |
Wiring mode of Voltage Transformer |
Three-phase three-wire system |
|
V-V |
| Three-phase four-wire system |
Y-Y |
| 6 |
Rated Primary Current |
A |
5~600 |
| 7 |
Rated Secondary Current |
5 |
| 8 |
Standard level of voltage transformer |
|
0.2/3 |
| 9 |
Standard level of Current transformer |
|
0.2S |
| 10 |
Rated output of voltage transformer |
VA |
15/200 |
| 11 |
Voltage transformer limit output |
500 (3-level) |
| 12 |
Rated output of Current transformer |
10 |
| 13 |
Polarity |
|
Minus polarity |
| 14 |
Rated Short-time Power frequency Withstand Voltage |
kV/min |
42/1 |
| 15 |
Rated Lightning Impulse Withstand Voltage |
kV |
75 |
OUTLINE AND INSTALLATION DIMENSION
Our Customer
Our customers are located all over the world.
Test Reports
All products have undergone professional testing and certification.
Photos of Product
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