ZW32-12 outdoor HV vacuum circuit breaker is a 3-phase AC 50Hz 12kV outdoor switch equipment
♦ Installation way: pole mounted;
♦ Operating mechanism: spring operating mechanism and permanent magnetic operating mechanism;
♦ Pole type: upper-lower Dole one-piece pole, embedded pole;
♦ Application: outdoor 12kV substation, power plant.
♦ Operation type manual, electric, remote control.
Product Standards
♦ IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
♦ GB1984 High Voltage AC Circuit-breakers
♦ GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear
Standards
♦ JB/T 3855 High Voltage AC Vacuum Circuit-breakers
♦ DL/T402 Specification of High-voltage AC Circuit-breakers
Environmental Conditions
♦ Ambient temperature: -35°C 〜+45°C;
♦ Altitude: <1000m;
♦ Wind speed < 35m/s;
♦ Earthquake intensity: <8 level;
♦ Filthy level: IV;
♦ Installation places: No fire, explosion hazard or serious filthy.
Main Technical Parameters
| No |
Item |
Unit |
Value |
| 1 | Rated voltage |
kV |
12 |
| 2 | Rated frequency |
Hz |
50 |
| 3 | Rated current |
A |
630, 1250 |
| 4 | Rated short circuit breaking current |
kA |
20, 25 |
| 5 | Rated peak value withstand current (peak) |
kA |
40, 50 |
| 6 | Rated short time withstand current |
kA |
16, 20 |
| 7 | Rated short circuit duration |
s |
4 |
|
8 |
Rated short-circuit closing current (peak) |
kA |
40, 50 |
|
9 |
Rated operating sequence | Times |
O-0.3S-CO-180S-CO |
| 10 | Mechanical life(spring type/permanent magnetic type) | Times |
10000/30000 |
|
11 |
Rated circuit breaking number | Times |
10000 |
| 12 | Rated short-circuit breaking current breaking times | Times |
500 |
|
No |
Item |
Unit |
Value |
|
13 |
Power frequency withstand voltage (1min)(wet) inter-phase, earth(dry) inter-phase, earth/fracture) |
kV |
34 42 |
|
14 |
Lightning impulse withstand voltage (peak) inter-phase, earth/fracture |
kV |
75 |
| 15 | Secondary circuit 1min power frequency withstand voltage except of electronic devices |
V |
2000 |
| 16 | Clearance between open contacts |
mm |
9±1 |
| 17 | Over travel |
mm |
2±10.5 |
| 18 | Opening speed |
m/s |
1.2±0.2 |
| 19 | Closing speed |
m/s |
0.6±0.2 |
| 20 | Contact closing bounce duration |
ms |
≤2 |
| 21 | Inter-phase center distance |
mm |
340±1.5 |
| 22 | Three phase closing and opening asynchronism |
ms |
≤2 |
| 23 | Each phase conductive circuit resistance |
μΩ |
≤80 |
| 24 | Closing time |
ms |
≤75 |
| 25 | Opening time |
ms |
≤50 |
| 26 | Rated power of energy storage motor |
W |
40 |
General Structure Drawing and Installation Size (unit: mm)
♦ ZW32-12
♦ ZW32-12G
♦ ZW32-12M
♦ Installation ways
