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. When the oil-immersed transformer internal fault, such as arc insulation will break down, produce large amounts of gas, its intensity and severity of different failure. Transformer internal fault protection to protect the reaction gas gas gas state relay (also known as gas relay) usage. Protecting the exchange of gas within the sealed float at the top, the bottom is a piece of metal baffles, are both equipped with sealed mercury contacts. Can float and be a shield around the axis of. During normal operation, the relay filled with oil, floating, dip in oil in a floating position, the mercury contacts disconnect; tailgate lowered due to its weight, its contacts are broken mercury. When a minor fault within the transformer, the gas produced by relatively slow, the storage container of gas on the way to the accumulation of gas in the first place in the top compartment of the relief, so that oil has fallen, resulting in lower closing contact Mercury floats, the online extension of the signal, which is called. Gas relay type with floats, stalls plate, cup and other openings of different models. Currently, they use a relay QJ-80 type signal circuit connected to the Open Cup circuit to prevent take shield. Protect air signals are called action, which means that the reasons differ Open Cup relay signals inside the loop contact closure, plate light lamp. 2, transformer protection of protection of gas:
Gas protection is to protect the transformer, which can reflect all the errors in the tank. Gas protection measures and rapid, sensitive and reliable and easy. But that does not reflect the full external tanks. (Such as lead, above), the failure will not be able to act as a safeguard. The sole of the equipment inside the transformer ?g prevent errors.. Moreover, the protection of the natural gas is also easily accessible in a number of exogenous factors (such as earthquakes), with the involvement of dysfunction, which should take appropriate measures. 3, transformer installation of gas protection:
Gas relays installed in the transformer to the storage cabinet of the connecting pipe on the road, the installation should take into consideration: 1, first plate on the gas pipeline valve relay block. Like a butterfly valve at LAX or another, if necessary, it can let go of the oil in the oil cushion, if the number of working oil spill.
Gas protection is to protect the transformer, which can reflect all the errors in the tank. Gas protection measures and rapid, sensitive and reliable and easy. But that does not reflect the full external tanks. (Such as lead, above), the failure will not be able to act as a safeguard. The sole of the equipment inside the transformer ?g prevent errors.. Moreover, the protection of the natural gas is also easily accessible in a number of exogenous factors (such as earthquakes), with the involvement of dysfunction, which should take appropriate measures. 3, transformer installation of gas protection:
Gas relays installed in the transformer to the storage cabinet of the connecting pipe on the road, the installation should take into consideration: 1, first plate on the gas pipeline valve relay block. Like a butterfly valve at LAX or another, if necessary, it can let go of the oil in the oil cushion, if the number of working oil spill.