Overview
KYN28A-12 Series switchgear panel is a MV air-insulated switchgear (AIS) for primary distribution, with vacuum circuit-breaker has been designed for the various operating requirements in public and industrial medium-voltage distribution systems. This panel applies to 3.6～12kv 3 phase AC 50Hz network for receiving and distributing power energy and also for control，monitor and protection. It can be arranged for single bus, single-bus sectionalizing system. It accords to IEC62271-200 <>, IEC694<>, GB3906<<3～35KV AC Metal Enclosed Switchgear>>, DIA04<>, DIN.VDE0670<> and so on. It has perfect and reliable prevention function against false-operation.
Operating Conditions
1. Ambient temperature: -10℃ ~+40℃;
2. Altitude: 1000m;
3. Relative humidity: daily average 95%, monthly average 90%;
4. Seismic resistance: 8 magnitude.
5. Occasions without flammable and explosive matter, without corrosive chemical and frequent severe vibration, without strong shake.
Technical Specification
| Item | Unit | Data | |
| Rated voltage | KV | 3 6 7.2 12 | |
| Rated frequency | Hz | 50 | |
| Rated current(circuit breaker) | A | 630, 1250, 1600, 2000, 2500, 3150 | |
| Rated current(switchgear) | A | 630, 1250, 1600, 2000, 2500, 3150 | |
| Rated short-time withstand current (4s) | KA | 16, 20, 25, 31.5, 40, 50 | |
| Rated peak withstand current※ | KA | 40, 50, 63, 80, 100, 125 | |
| Rated short-circuit breaking current | KA | 16, 20, 25, 31.5, 40, 50 | |
| Rated short-circuit making current※ | KA | 40, 50, 63, 80, 100, 125 | |
| Rated insulation level | 1min.P.F. withstand voltage (phases to ground/gaps) | KV | 24/32/42 |
| Lightning impulse withstand voltage (phases to ground/gaps) | KV | 40/60/75 | |
| Protection class | Enclosure: IP4X, IP2X (VCB Door opened) | ||