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A 6-10 kV K-63 cubicle switchboard is designed to receive and distribute electric energy of three-phase alternating current of an industrial frequency of 50 Hz and a voltage of 6 (10) kV.
A K-63 cubicle switchboard is used as a distributing device with a voltage of 6÷10 kV, also as an electrical switchgear of transformer substations, including transformer substations (unit substations) with a voltage of 35/6÷10 kV, 110/6÷10 kV, 110/35/6÷10 kV, 220/6÷10 kV 220/35/610 kV for the electric grids of industrial plants, agricultural enterprises, power plants and electrification of rail transport.
Characteristic |
Value |
|---|---|
| Rated voltage (electric line voltage), kV: | 6,0; 10 |
| Rated frequency, Hz | 50 |
| Rated current of the main circuits in the cells of a cubicle switchboard, A | 630; 1000; 1600; 2000; 2500; 3150; 4000 |
| Rated busbar current, A: | 1000*;1600;2000; 2500; 3150; 4000 |
| Rated breaking current of a switch installed into a cubicle switchboard, kA: | 12,5; 16; 20; 25; 31,5; 40 |
| Short-time thermal current (momentary current) in case current flow time is 3 sec., kA: | 20; 31,5 |
| Short time electrodynamic current of the main circuits of the cubicle switchboard cabinets, kA: | 51; 81 |
| Insulation level according to GOST 1516.3-96 | Normal B level insulation |
| Insulation type | Air, composite |
| Presence of withdrawable parts in the switchboard cabinets | With withdrawable parts and without withdrawable parts |
| Type of linear high-voltage junctions | Cable junctions, bus junctions |
| Ingress protection rating according to GOST 14254-96 | IP30, IP31 is according to the customer's requirement |
| Heat release on the switchboard cabinet, W, no more than: - rated current 630 A - rated current 1000 A - rated current 1600 A |
185 270 665 |
