Overview
KYN61-40.5(Z) Indoor AC high-voltage metal-armored withdrawable switchgear (hereinafter referred to as “switchgear”) is suitable for three-phase AC 50Hz power systems. It is used in power plants, substations and distribution rooms of industrial and mining enterprises to receive and distribute electrical energy, and to control, protect and monitor circuits.
This product complies with the following standards: GB3906 “AC Metal-enclosed Switchgear for 3~35kV”, GB/T11022 “Common Technical Requirements for High Voltage Switchgear and Controlgear”, and IEC60298 “AC Metal-enclosed Switchgear and Controlgear with Rated Voltages Above 1kV and Below 50kV”.
Usage environment
1. Ambient air temperature: Maximum temperature +40℃, minimum temperature -10℃;
2. Altitude: ≤1000m;
3. Surrounding relative humidity: Daily average≤95%, monthly average≤90%;
4. Ambient air: Not suitable for places with corrosive, severe pollution, flammable gases or intense vibration.
5. In the event of an earthquake, its intensity must not exceed magnitude 8.
Technical Parameter
| Item | Unit | Argument | |
| Rated voltage | kV | 40.5 | |
| Rated insulation level | Lightning impulse withstand voltage (full wave) | kV | 185 |
| Power frequency withstand voltage (1 minute) | 95 | ||
| Rated frequency | Hz | 50 | |
| Rated current | A | 630;1250;1600;2000 | |
| Rated short-circuit breaking current | kV | 20,25,31.5 | |
| Rated short-circuit closing current (peak value) | kA | 50,63,80 | |
| Rated peak withstand current | kA | 50,63,80 | |
| Rated short-time withstand current (4s) | kA | 20,25,31.5 | |
| Case protection class | IP4X | ||
| Overall dimensions (W×D×H) | Vacuum breaker cabinet | mm | 1400×2800×2600 |
| SF6 short-circuit cabinet | |||
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