Outdoor Pole Mounted High Voltage Vacuum Load Switch
Introduction - High Voltage Vacuum Load Switch [Vacuum Circuit Breaker]FZW32-12/T630-20 Outdoor Pole Mounted High Voltage Vacuum Load Switch is a new generation of high voltage electrical equipments which has integrated domestic and foreign technology. It has experienced strict model test and long term trial operation. All its performances have reached GB3804 and IC standards.
It is mainly designed for urban and rural network construction and renovation and adopts the three-phase 12 KV rated voltage 50 Hz power supply system. Its chassis adopts stainless steel material and hot galvanized carbon steel with anti-ultraviolet coating layer which guarantees the normal operation outside. Its parts adopt stainless material to assure the endurance of the load switch, stability and water-proof, salt-proof performances.
It has a small volume, light weight, pleasing appearance, convenient operation, high parameter, strong opening ability, long life span, frequent operation, few maintenance and obvious fracture, etc. such outstanding features. It can be operated by manual single rod or electrical, remote control
Working & Environmental Conditions - High Voltage Vacuum Load Switch [Vacuum Circuit Breaker]
1. Surrounding air temperature: +40°C~-30°C (below -45°C can be provide for special requirement)
2. Altitude lower than 1000m, 2000m, 3000m
3. Wind pressure smaller than 700Pa(equals to wind speed of 34m/s)
4. Filthy rank lower than IV
5. No regular dramatic shake and earthquake intensity smaller than 8 degree.
Model Meaning
Parameters - High Voltage Vacuum Load Switch [Vacuum Circuit Breaker] Table One
| Order | Name | Unit | Parameter |
| 1 | Rated voltage | KV | 12 |
| 2 | Rated frequency | HZ | 50 |
| 3 | Rated current | A | 630 |
| 4 | Rated load active breaking current | A | 630 |
| 5 | Rated closed loop breaking current | A | 630 |
| 6 | 5%rated active load breaking current | A | 31.5 |
| 7 | Rated cable charge breaking current | A | 10 |
| 8 | Imin work frequency voltage tolerance vacuum fracture/alternated towards the ground/isolated fracture | KV | 42/48 |
| 9 | Lightening impact current tolerance: alternated /towards the ground/isolated fracture | KV | 75/85 |
| 10 | Rated short term current tolerance (thermal stable) | KA | 20 |
| 11 | Rated short circuit duration time | S | 4 |
| 12 | Rated peak value current tolerance (dynamic stable) | KA | 50 |
| 13 | Rated short circuit closing current | KA | 50 |
| 14 | Mechanical life span | Times | 10000 |
| 15 | Vacuum arc chamber contact allowed accumulated attrition thickness | Mm | 0.5 |
| 16 | Manual operation torque | Nm | ≤200 |
| 17 | Rated unload transformer breaking capacity | Kva | 1600 |
| 18 | Rated breaking capacitor group current | A | 100 |
| 19 | Weight | kg | 100 |
Table Two
| Order | Name | Unit | Parameter |
| 1 | Contact openness size | Mm | 5±1 |
| 2 | Average Switch opening speed | M/s | 1.1±0.2 |
| 3 | Different periods of three-phase Switch opening | Ms | ≤5 |
| 4 | Different periods of three-phase Switch closing | Ms | ≤2 |
| 5 | Circuit resistance of each phase circuit | µΩ | ≤400 |
| 6 | Inter and relative distances of charged objects | Mm | ＞200 |
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