60kw diesel generator,60kw diesel generator engine set for sale

Advantages wiring unit of 200 MW or more units and the use of generator and transformer unit that eliminates the GCB, but also eliminates the need for appropriate protection. But this has simplified wiring makes generators, transformers and stable operation of the system depends very much on the high pressure side of the main transformer high voltage circuit breaker operating reliability. When the high voltage circuit breaker in normal operation, or when performing splitting and truck operators, in the course of action under accident conditions in the event of a phase or two-phase circuit breaker tripping due, malfunction or fracture caused by insulation breakdown non-full phase separation, when closing state, the safe and stable operation of the grid will be seriously threatened, most likely due to phase running transformer insulation damage caused by a fire even burned, because the generator rotor negative sequence current leaving the role insulation damage or even fire burned, system stability and destruction caused by splitting a large area power outages and other serious accidents. Domestic power plant has been a lot of similar incidents, such as: a power plant No. 2 furnace downtime due to inspection, operation personnel to operate Unit 2 transformer breaker tripping circuit breakers A discovery phase of rejecting the booster station hand not jump after the success, the tie breaker will jump No.2 main transformer and splitting system, resulting in phase running time of up to 8 min, cause No. 2 rotor burned. Another example is the stone cave Plant No. 2 when the reverse power test machine for No. 2 machine reverse power protection action, while causing the high pressure side of the main transformer in parallel with the three-phase circuit breaker opening. A circuit breaker failed due to opening in the end, cause the circuit breaker to open phase operation, leading to plant another 600 MW unit is running, power four 500 kV lines, three 220 kV lines, Huangdu become a 500 kV transformer and a 220 kV transformer has tripped.

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