- Detail
Overview
The VZF-12R center-mounted, sealed vacuum load switch-fuse combination device (hereinafter referred to as the vacuum switch) is a vacuum switch device developed based on a special design concept and market demand. It is widely used in indoor metal-clad air-insulated switchgear and complies with standards such as GB3804-2004 and GB16926-1997.
Under normal operating conditions, as long as it operates within the technical parameter range of the vacuum switch, the VZF-12R center-mounted, sealed vacuum load switch-fuse combination device can ensure safe and reliable operation within power grids of the corresponding voltage level.
Model Meaning
Operating Environment
1. Ambient temperature: maximum temperature 40℃, minimum temperature -25℃.
2. Ambient humidity: daily average relative humidity: ≤ 95%, monthly average relative humidity: ≤ 90%.
3. Daily average saturated vapor pressure: ≤ 2.2x10^-3 MPa.
4. Monthly average saturated vapor pressure: ≤ 1.8x10^-3 MPa.
5. Altitude: not higher than 1500 m.
6. Seismic intensity: not exceeding 8 degrees.
7. Applicable locations: no dripping water, no fire or explosion hazards, no chemically corrosive gases, no severe vibration.
8. If the product's usage environment exceeds the above specifications, the user can negotiate with our company for confirmation.
Main Technical Parameters
| No. | Item | Unit | VZF-12/T630-20 Vacuum Load Switch | Vacuum Load Switch - Fuse Combination Appliance VZF-12/T125-50 |
| 01 | Rated Voltage | kV | 12 | 12 |
| 02 | 1min Power Frequency Withstand Voltage (Between Phases, to Ground) | kV | 42 | 42 |
| 03 | Lightning Impulse Withstand Voltage (Between Phases, to Ground) | kV | 75 | 75 |
| 04 | Rated Current | A | 630 | 125 (Fuse) |
| 05 | Rated Short-Circuit Breaking Current | kA | - | 50 (Fuse) |
| 06 | Rated Short-Time Withstand Current | kA | 20 | - |
| 07 | Rated Peak Withstand Current | kA | 50 | - |
| 08 | Rated Short-Circuit Making Current | kA | 50 | - |
| 09 | Rated Cable Charging Breaking Current | A | 16 | - |
| 10 | Rated Transfer Current | A | - | 3150 |
| 11 | Breaking No-Load Transformer | kVA | 1250 | - |
| 12 | Battery Life | Times | 10000 | |
| 13 | Partial Discharge Level | pC | ≤ 5 | |
Appearance and Installation Dimensions
