6-10 kV Excavator cabinet КВЭ type
The КВЭ high-voltage cabinet is designed for mounting on mining shovels on a turntable in an unheated enclosed housing. It serves for receiving and distribution of three-phase AC power (the rated voltage 6(10) kV, the frequency 50, 60 Hz), as well as for protection of electrical short circuits and overloads. In addition, the КВЭ excavator cabinet function is operative switching of electrical circuits.
The cabinets are usually equipped by own-produced vacuum circuit brakers VS-1.
Also, we can mount another circuit brakers under customers request, for example ВВ/EL or any other.
High-voltage КВЭ cabinet consists of a switch disconnector РВ or РВЗ, fuses, surge arresters, current transformers and relay protection.
THE BASIC TECHNICAL DATA
| The Rated voltage, kV | 6 |
| The Maximum operating voltage, kV | 7,2 |
| The Rated current of the main circuits of cabinet with vacuum circuit braker, A | 630 |
| The Rated current of disconnection of vacuum circuit braker cabinet, kA | 20; 25 |
| Thermal srtrength current cabinet with vacuum circuit braker (short - time current), kA | 20 |
| Rated peak withstand current of vacuum circuit braker cabinet, kA | 41 |
| Insulation kind | Air |
| The presence of conductors insulation | With bare busbar |
| Inlet Hi-Voltage connection`s kind | Cable |
| Serviceability | Two-sided |
| Dimentions, mm: | |
| Width, mm | 770 |
| Depth, mm | 880 |
| Height, mm (with a basket and a slide) | 1930 |
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