Description
The load switch MFZW28-12 is a three-phase combination load switch, known as the «Watch Dog». In the event of accidents inside HV consumers, energy distribution with voltages up to 10 kV through a T-shaped connection, if malfunctions occur in the incoming line from the consumers, or malfunctions occur inside the consumer load side, and the protective time does not coincide with the operation of the substation outgoing line switch.
The outdoor load switch MFZW28-12 represents ideal equipment to solve the above problems as Outdoor HV Automatic Recloser Circuit Breaker. A switch installed at the cross-section of overhead line systems with a voltage of 10 kV can automatically turn off the network during a single-phase earth fault or interphase short circuit, ensuring the safety of power supply for ordinary consumers. Suitable for use in substations, in mining and agricultural areas.
Rated current, A — 630, 1250
Rated voltage, kV — 10
The maximum operating voltage, kV — 12.7
Rated frequency, Hz — 50
Rated short-time withstand current, kA / s — 12.5 / 4 20/2
Rated peak withstand current, kA — 31.5 / 50
Impulse voltage (peak) / ground, kV — 75/85
