Outdoor High Voltage Vacuum Circuit Breaker
Introduction - High Voltage Vacuum Circuit BreakerZW32 -12/T630-20 Outdoor Vacuum Circuit Breaker applies to three-phase AC 50Hz 12kV rated voltage and below outdoor power transformation and distribution system. It is widely used in rural network construction and renovation, industrial mining enterprises power distribution system as well as other public facilities. It can be used for the power distribution and control of ring net power supply unit and terminal devices as well as protecting the electrical devices. This product has such features as: small volume, light weight (lighter than 100Kg), long life span, reliable, safe, convenient operation, maintenance and installation.
Working & Environmental Conditions - High Voltage Vacuum Circuit Breaker
1. Surrounding air temperature: -40°C~+55°C, daily temperature difference: 25°C
2. Altitude: lower than 2000m
3. Wind pressure: smaller than 700Pa (equals to wind speed 35m/s)
4. No regular dramatic shake, earthquake intensity should smaller than 8 degree.
5. No strong corrosion gas or medium (such as acids, alkali and heavy smoke )
6. Anti-filthy rank: Ⅳ
Model Meaning
Technical Parameters - High Voltage Vacuum Circuit BreakerTable I
| Order | Name | Unit | Parameter | ||
| 1 | Rated voltage | KV | 12 | ||
| 2 | Rated current | A | 630/1250 | ||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Imin work frequency voltage tolerance | Dry test | KV | 42/49 | |
| Wet test | 30 | ||||
| 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-slose-open-180s-close-open | |||
| 11 | Rated times of short circuit breaking current | Times | 30 | ||
| 12 | Mechanical life span | Times | 50000 | ||
| 13 | Secondary circuit I min work frequency voltage tolerance | KV | 2 | ||
| 14 | Protection CT | Ratio | A | ( )/5 | |
| Capacity | VA | 15 | |||
| 15 | Weight | Kg | 100 | ||
Table II
| Order | Name | Unit | Parameter |
| 1 | Contact openness size | Mm | 11±1 |
| 2 | Contact excess travel | Mm | 3+1.0-0.3 |
| 3 | Average Switch closing speed | M/s | 0.65±0.15 |
| 4 | Average Switch opening speed | M/s | 1.1±0.2 |
| 5 | Differences of three-phase Switch opening at 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 | DC resistance of each phase circuit | µΩ | ≤200 |
| 10 | Dynamic, static contacts allowed accumulated attrition thickness | Mm | 3 |
Picture I ZW32-12/T630-20 Contour and Installation Dimensions
1 Insulate cover cylinder
2 Vacuum arc chamber (inside the cover tube)
3 Hoist ring
4 Switch opening and closing handle
5 Energy storage handle
6 The box
7 PM (inside the box)
8 Switch opening and closing instruction
9 Aviation plug
10 Electric sensor
Picture II ZW32-12G/T630-20 (with isolate switch) Contour and Installation Dimensions
1 Isolate knife
2 Insulate pull bar
3 Insulator
4 Static contact
5 isolate switch support
6 Isolate switch operation handle
7 Isolate switch support
8 Interlock bar
Back
Complete set switchgear-Power Control System
