Outdoor Pole Mounted High Voltage Vacuum Circuit Breaker
Introduction: Outdoor High Voltage Vacuum Circuit BreakerMZZ10-12/T630-20 Outdoor Pole Mounted High Voltage Vacuum Circuit Breaker is outdoor high voltage power distribution equipment which is of three-phase AC 50Hz 12kV rated voltage. It is mainly used in opening and closing load current, overload current and short circuit current in the power system. It is applied to the protection and control of the power distribution system in substations, industrial mining enterprises as well as agriculture network and many other frequently used places. If combined with the controller, it can meet the requirements of automatic power distribution system and reliably and efficiently function as the traditional recloser.
Working & Environmental Conditions - High Voltage Vacuum Circuit Breaker
1. Environmental temperature: -40°C~+55°CDiurnal temperature difference25°C
2. Altitude: Lower than 2000m
3. Wind Pressure: No more than 700 Pa (equal to wind speed of 35 m / s)
4. No regular dramatic shake, earthquake intensity < 8°
5. No strong corrosion gas , conductive media (such as various acids, large alkali, thick smoke)
6. Anti-filthy-capacity: Ⅳ
Model Meaning
Main Technical Parameters of High Voltage Vacuum Circuit Breaker
| Order | Name | Unit | Parameter | |
| 1 | Rated voltage | KV | 12 | |
| 2 | Rated current | A | 630 | |
| 3 | Rated frequency | HZ | 50 | |
| 4 | 1min work frequency voltage tolerance | Dry test | KV | 42/49 |
| Wet test | 34 | |||
| 5 | Lightening impact current tolerance (peak value) alternated, towards the ground/fracture | KV | 75/85 | |
| 6 | Rated short circuit breaking current | KA | 20 | |
| 7 | Rated short circuit closing current (peak value) | KA | 50 | |
| 8 | Rated peak value current tolerance | KA | 50 | |
| 9 | 4S short term current tolerance | KA | 20 | |
| 10 | Rated operation cycle | Open-0.3S-close open-180S-close open | ||
| 11 | Rated breaking times of short circuit current | Times | 3 | |
| 12 | Mechanical life span | Times | 50000 | |
| 13 | Secondary circuit 1min work frequency voltage tolerance | KV | 2 | |
| 14 | Protective CT | RATIO | A | ( )/5 |
| CAPACITY | VA | 15 | ||
| 15 | Weight | Kg | 180 | |
| Order | Name | Unit | Parameter |
| 1 | Contact openness size | Mm | 11±1 |
| 2 | Contact excess travel | Mm | 3+1.0 3-0.3 |
| 3 | Average Switch closing time | M/s | 0.65±0.15 |
| 4 | Average Switch opening time | M/s | 1.1±0.2 |
| 5 | Time differences of three-phase closing switch in the same period | Ms | ≤2 |
| 6 | Switch closing and bouncing time | Ms | ≤2 |
| 7 | Switch closing time | Ms | ≤60 |
| 8 | Switch opening time | Ms | ≤70 |
| 9 | Direct current resistance of each circuit phase | μΩ | ≤200 |
| 10 | Dynamic, stable contact allowed accumulated attrition thickness | Mm | 3 |
Picture 1 Contour and Installation Dimensions of the Circuit Breaker
Picture 2 Structure, Contour and Installation Dimensions of the Combined Circuit Breaker
1 contact blade 2 contact 3 insulated bar 4 pillar
5 isolated switch actuator handle 6 shaft 7 Isolated switch support 8 circuit breaker
Complete set switchgear-Power Control System
