Product Overview
The AB-3S-12 Outdoor High-Voltage High-Speed Permanent Magnet Vacuum Circuit-Breaker integrates the vacuum arc-extinguishing principle with a permanent magnet actuator. It incorporates microprocessor-based technology, modern network communication, and advanced materials for switchgear manufacturing. It is a three-phase, 50Hz AC outdoor distribution equipment with a rated voltage of 12kV.
This product is widely suitable for use as a sectionalizing or tie switch in urban power grids, or as a feeder switch for outdoor substations in rural distribution networks. It can reliably make and break load currents and short-circuit currents.
Model Designation and Its Meaning
Model: `AB-3S-12/□-□`
A: Automatic
B: Circuit-Breaker
3S: Three Single-Phase structure
12: Rated voltage (kV)
□: Rated current (A)
□: Rated short-circuit breaking current (kA)
Technical Specifications
|
S.Q. |
Name |
Data |
|
1 |
Rated Voltage |
12kV |
|
2 |
Rated Current |
630(1250)A |
|
3 |
Rated Power-Frequency Withstand Voltage (1 min) |
42kV |
|
4 |
Rated Lightning Impulse Withstand Voltage |
75kV |
|
5 |
Rated Short-Circuit Breaking Current |
20(25)kA |
|
6 |
Rated Short-Circuit Making Current (Peak) |
50kA |
|
7 |
Rated Short-Time Withstand Current (3s) |
20(25)kA |
|
8 |
Rated Peak Withstand Current |
50kA |
|
9 |
Rated Number of Short-Circuit Breaking Operations |
30次 |
|
10 |
Rated Frequency |
50Hz |
|
11 |
Mechanical Endurance |
10000 times |
|
12 |
Main Circuit Resistance |
≤120uΩ |
|
13 |
Current Transformer Ratio |
30~1250/1 |
|
14 |
Auxiliary Power Supply Voltage |
+24V |
|
15 |
Creepage Distance |
≥31mm/kV |
|
16 |
Ambient Temperature Range |
-40℃+70℃ |
|
17 |
Weight |
90+40kg |
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