Complete switchgears KRU-6RPP-U1 are designed for operation in open-pit electric distribution networks of three-phase alternating current with isolated neutral with voltage 6 kV and frequency 50 Hz for power connection and protection of various quarry consumers (excavators, drilling machines, drilling rigs, compressor units and other electrical equipment), as well as for providing lighting of working places in open pits.
Complete switchgears KRU-6RPP-U1 are designed for operation in the quarry electric distribution networks of three-phase alternating current with isolated neutral with voltage 6 kV and frequency 50 Hz for power connection and protection of various quarry consumers (excavators, drilling machines, drilling rigs, compressor units and other electrical equipment), as well as for providing lighting of working places in quarries. GIS-6RPP-U1 is supplied to the customer with high factory readiness, preset design parameters of protection (maximum current protection, current trim, ground fault protection, minimum protection, protection against grounding wire breakage, protection against phase wire breakage) provide a high degree of protection of electrical equipment.
Main parameters and characteristics of KRU-6RPP-U1
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 |
At the customer's request KRU-6RPP can be completed with a sledge.