Description
ZW32-24 series outdoor pole mounted high voltage vacuum circuit breaker is used as the main control and protective equipment in three phases power system of AC50Hz, voltage 24KV to switch on/off loading current overloading current and short circuit current, it applies to distribution system of substation, industrial enterprises to control and protect the downstream equipment.
The breaker adopts vertical column, dry structure, it has function of reliable insulation, long electric life and free maintenance. It is specially used for places where it needs frequent operation and rural network where has little maintenance services.
Standards Compliant
GB1984 AC high voltage circuit breakers"
GB11022 "high-voltage switchgear and control equipment standards commontechnical requirements"
GB311.1-6 "insulated high voltage transmission and distribution equipment."
GB763 "AC high voltage electrical heating during long-term work"
GB2706"AC high voltage electrical dynamic and thermal stability test methods"
GB3309 high voltage switchgear at room temperature mechanical test"
DL/T593 "common ordering technology high voltage switchgear
Model description
Environmental conditions
1.ambient air temperature:+40℃~-40 ℃
2.a height of not more than 2000 meters above sea level
3.the wind speed is not greater than 35m/s
4.anti-contamination level for grade IV
5.the earthquake intensity does not exceed 8 degrees
6.no fire,explosion,severe chemical corrosion of the place
Technical Data
| 1 | Rated voltage | KV | 24 | |
| 2 | Rated insulation level | 1 min withstand voltage (Dry) | 65/65 | |
| 1 min withstand voltage (Wet) | 50 | |||
| Lightning impulse withstand voltage (peak) | 125/145 | |||
| 3 | Rated frequency | HZ | 50 | |
| 4 | Rated current | A | 630, 1250,1600 | |
| 5 | Rated short circuit breaking current | kA | 20, 25, 31.5 | |
| 6 | Rated short circuit making current (peak) | kA | 50, 63, 80 | |
| 7 | Rated short time withstand current | kA | 20, 25, 31.5 | |
| 8 | Duration rated short circuit current | S | 4 | |
| 9 | Nos of breaking rated short circuit breaking current | Times | 30 | |
| 10 | Fixed operation sequence | off-0.3S-on/off-180S on/off | ||
| 10 | Opening time | ms | 18-45 | |
| 11 | Closing time | 25-60 | ||
| 12 | 1min secondary circuit power frequency withstand voltage | V | 2000 | |
| 13 | Polar distance | mm | 395±2 | |
| 14 | Mechanical life | Times | 10,000 | |
| 13 | Rated operating voltage and rated voltage of auxiliary loop | V | AC/DC220, 110; DC24 | |
| 16 | Contact open distance | mm | 12 ±1 | |
| 17 | Contact Over-travel | mm | 3±1 | |
| 18 | Average opening speed | m/s | 1.1±1.7 | |
| 19 | Average closing speed | m/s | 0.5-1.0 | |
| 20 | Three phase simultaneity | ms | ≤2 | |
| 21 | Contact closing bounce time | ms | ≤2 | |
| 22 | Main circuit DC resistance per phases | μΩ | ≤100 | |
Outline & Mounting Dimensions
