ZW20A-12/24 Outdoor AC Vacuum Circuit Breaker
PRODUCT DESCRIPTION
ZW20A-12/24 model outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12/24KV, 50/60Hz power system. It’s appli
PRODUCT DESCRIPTION
ZW20A-12/24 model outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12/24KV, 50/60Hz power system. It’s applicable for substations, industry and mining, urban and rural electricity power networks, especially applicable in occasions with frequent operation and automatic power distribution network. It accords with the standards of IEC62271-100& GB1984 AC high voltage circuit breaker, GB/T 11022 HV General technical requirement of switch and control apparatus.
AMBIENT CONDITION
1. Altitude: ≤1000mm;
2. Ambient temperature:-40℃~+40℃;
3. Wind speed: ≤34m/s;
4. Applicable occasions should free from inflammables, explosives, corrosives.
MODEL
PRODUCT FEATURE
- Ideal apparatus in urban and rural electricity network reform
Remote function: remote control, remote metering, remote communication and remote adjustment.
- Flexible operating
Both power storage and CO operation are motor and manual operated, remote and local operation are both available.
- Excellent breaking capability
Break short-circuit current 25kA up to 30 times.
- Small operation power and high dependability
The small motor-driving spring operation mechanism with new design is of lowest operation power (about 30W).
- Multiple installation
Pole mounted and pad mounted.
- Reliable sealing
The mature sealing technology assures reliable sealing performance.
- Particular incoming and outgoing method
Silicon rubber bushing to make enough insulate distance.
- Safe operation
Anti-explosive device mounted on the top of box prevents heated gas and maters from spattering out when inner fault occurs.
Technical Specification
|
No. |
Item |
Unit |
Data |
|
1 |
Rated voltage |
kV |
12/24 |
|
2 |
Rated power frequency |
Hz |
50 |
|
3 |
Rated current |
A |
630, 1000 |
|
4 |
Rated short-circuit breaking current |
kA |
12.5, 16, 20, 25 |
|
5 |
Rated withstand current(peak) |
kA |
31.5, 40, 50, 63 |
|
6 |
Rated short-time withstand current (4s) |
kA |
12.5, 16, 20, 25 |
|
7 |
Rated short-circuit making current(peak) |
kA |
31.5, 40, 50, 63 |
|
8 |
Mechanical life |
Times |
10000 |
|
9 |
Rated short-circuit breaking time |
Times |
30 |
|
10 |
1min P.F withstand voltage-dry (phase to phase, to earth; across open contacts) |
kV |
42/49/60 |
|
11 |
Lightning impulse withstand voltage peak (phase to phase, to earth; across open contacts) |
kV |
75/85/125 |
|
12 |
P.F withstand voltage for secondary loop |
kV |
2 |
|
13 |
Net weight |
kg |
140 |
|
14 |
SF6 rated gage pressure |
Mpa |
“0” |
Note: the insulating level should rectify accordingly when the altitude higher than 1000 m.
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