KRU-6R-U2
Complete switchgear KRU-6R-U2 designed for reception and distribution of three-phase AC voltage 6kV frequency 50 Hz in the quarry electricity distribution networks with isolated neutral, as well as for the protection of electric motors, transformers and other electrical equipment.
KRU-6R-U2
| Parameter name | Value |
|---|---|
| Rated voltage, kV | 6 |
| Highest operating voltage, kV | 7,2 |
| Rated current of main circuits, A | 400 |
| Rated frequency, Hz | 50 |
| Thermal resistance current (1s), kA | 12,5 |
| Electrodynamic withstand current (amplitude value), kA | 32 |
| Insulation level according to GOST 1516.3-96 | Normal |
| Test AC voltage (1 min) according to GOST 1516.3, kV | 32 |
| Type of insulation | Combined (air and solid) |
| Basic embedded hardware | High voltage load breaker, vacuum circuit breaker, current transformers, voltage transformer, zero sequence transformer, three-phase antiresonant voltage transformer group, disconnector. |
| Number of high-voltage circuit breakers, pcs | 2 |
| Number of short-circuits | 2 |
| Load-break switch version | With vertical blade movement, with ground contacts |
| Type of high voltage switch | Vacuum VBEM-2-10-12,5/800 UHL2 |
| Circuit breaker rated current, A | 800 |
| Rated breaking current of the circuit breaker, kA | 12,5 |
| Type of switch actuators | Electromagnetic |
| Drive supply voltage, V | ~220 |
| Breaker life in mechanical / switching resistance, VO cycles | 25 000 |
| High-voltage input and output design of the switchgear | Air input, cable output |
| Type of control | Load-break switch - local manual; vacuum contactor - local |
| Service conditions | Double-sided, front and back side |
| Degree of protection according to GOST 14254 | Protected version, IP 44 when doors and covers of high-voltage compartments are closed, degree of protection from front of low-voltage part of vacuum contactor drive and equipment compartment - IP 44 |
| Resistance to mechanical external influences according to GOST 17516.1 | М 25 |
| Dimensions, mm: - widhth - height - depth |
1173 3972 1455 |
| Mass, kg | 950 |