50kw diesel generator,50kw diesel generator engine set for sale

Domestic manufacturers have not the capacity to produce 600 MW Grade Large Capability and supporting units GCB, abroad only ABB, GEC-ALSTHOM, MITSUBISHI, several well-known large companies have the ability to produce (the main technical parameters are shown in Table 1). GCB type are mainly less oil type, air type, SF6 gas type and vacuum type. Less oil type GCB such as Shenyang High Voltage Switchgear Factory in the 1960s produced SN3, SN4, etc., rated current of 5000 ~ 8000 A, rated breaking current of 58 kA. Air type GCB, like France AA produced by PKG2 type rated voltage of 36 kV, rated current 11000 A, rated breaking current of 58 kA, the kind of circuit breaker is mainly products are bulky, loud noise, a lack of medium-capacity circuit breakers shortcomings in our Gezhouba hydropower plant has to use, run well. With the development of power equipment manufacturing technology, the 1980s, companies such as ABB launch SF6 gas as the arc medium of GCB, it uses SF6 self-extinguishing principle, when the movable arcing contacts separate heating SF6 gas to expands to form the required extinguishing gas, while a current flows through the coil generates a magnetic field within the fixed contact, causing arcing rotary separator to ensure that the load contacts and arcing contacts work properly. SF6 Type GCB plant is currently at home and abroad have a lot of use, it rated current up to 24000 A, breaking capacity 160 kA, and a compact, low (<0.3%) failure rate, it can also be integrated CT, PT, grounding switch and other equipment, a versatile combination of electrical appliances.

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