Outdoor Pole Mounted High Voltage Vacuum Load Switch
Introduction - High Voltage Vacuum Load Switch [Electrical Switch]1. MZF12-12/T630-20Outdoor Pole Mounted High Voltage Vacuum Load Switch is a new generation of high voltage electrical equipment which integrates domestic and foreign advanced technology and has experienced strict pattern test and long term operation examination. All technical performances have achieved GB3804 and IC standards. This product is mainly designed for urban and rural network construction and transformation. It is applied to rated voltage 12 KV three-phase AC 50Hz power supply network. Its chassis adopts stainless steel materials and hot galvanized with anti-ultraviolet protection coating, which guarantees the normal operation at the outside. Its components are made of stainless materials which assure the endurance, stability and water-proof, salt-proof performances of the load switch.
2. It has such outstanding features as small volume, light weight, pleasing appearance, easy operation, high parameter, strong opening and closing ability, safe, reliable, long electric life span, obvious fracture. It is of single pole manual operation as well as electrical, remote control operation.
Environmental Conditions - High Voltage Vacuum Load Switch
1. Environmental temperature: +40°C~-30°C(minimum -45°C is allowed for the special requirement made by the user.)
2. Altitude: Lower than 1000m, 2000m, 3000m；
3. Wind Pressure: No more than 700 Pa (equal to wind speed of 34 m / s)
4. Anti-filthy-capacity: Ⅳ
5. No regular dramatic shake, earthquake intensity < 8°
Model Meaning
Main Technical Parameters - High Voltage Vacuum Load Switch
| Order | Name | Unit | Parameter |
| 1 | Rated voltage | kv | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 |
| 4 | Rated load breaking current | A | 630 |
| 5 | Rated closed loop breaking current | A | 630 |
| 6 | 5%rated load breaking current | A | 31.5 |
| 7 | Rated cable charged breaking current | A | 10 |
| 8 | 1 min work frequency voltage tolerance: vacuum fracture/ alternated, towards the ground/isolated fracture | A | 42/48 |
| 9 | Lightening impact voltage tolerance: alternated/towards the ground/isolate fracture | KV | 75/85 |
| 10 | Rated short term current tolerance (thermal stable) | KV | 20 |
| 11 | Rated short term continued current | KV | 4 |
| 12 | Rated peak value current tolerance (dynamic stable) | S | 50 |
| 13 | Rated short circuit closing current | KA | 50 |
| 14 | Mechanical life span | KA | 10000 |
| 15 | Vacuum arc chamber contact allowed accumulated attrition thickness | Times | 0.5 |
| 16 | Manual operation torque | Mm | ≤200 |
| 17 | Rated unload transformer breaking capacity | KVA | 1600 |
| 18 | Rated breaking capacity group current | A | 100 |
| 19 | Weight | Kg | 100 |
| Order | Name | Unit | Parameter |
| 1 | Contact openness size | Mm | 5±1 |
| 2 | Average Switch opening time | M/s | 1.1±0.2 |
| 3 | Different periods of three-phase opening switch | Ms | ≤5 |
| 4 | Different periods of three-phase closing switch (isolate knife) | Ms | ≤2 |
| 5 | Each phase circuit resistance | μΩ | ≤400 |
| 6 | Distances of charged objects and towards the gorund | Mm | ＞200 |
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