[keyword] transformer is unusual breakdown

[introductive] transformer has all in all place in be defeated by distribution system, photograph of as electric as other equipment is more inferior than its fault rate, but once malfunction,will bring huge harm to power system and production of industry and agriculture. Accordingly, in can moving in the light of transformer all sorts of unusual reach breakdown phenomenon, make rapid and correct judgement, processing, eliminate equipment hidden trouble and flaw as soon as possible, the safety that assures transformer thereby moves, the safety that assures power system then moves, it is us the basic technical ability that the member that each electric power runs a person should have.

Electric power transformer is one of main facility of power plant and transformer substation. The utility of transformer is many sided, not only need lifts voltage sends the area that use phone electric energy, reduce tension even for various use voltage, in order to satisfy the need with report. Anyhow step up and step-down are indispensible will finish by transformer. Convey in power system in the process of electric energy, voltage of inevitable meeting generation and power two shares loss, when carrying same power voltage loss and voltage become inverse ratio, the square of power loss and voltage becomes inverse ratio. Use transformer to heighten tension, reduced power transmission loss.
Transformer is by core, coil, gasoline tank, oily pillow, respirator, prevent squib, radiator, insulated sleeve, cent to receive relay of switch, gas, still have thermometer, hot siphon, wait for accessory composition.
In passing pair of transformer to move all sorts of unusual the shallow analyse that reachs breakdown phenomenon, can right of transformer move to be able to understand with the processing technique out of order, master. Handling transformer unusual when reaching breakdown can correct judgement, decisive processing. Discover hidden trouble, flaw in time when normal and perambulatory transformer, make equipment moves below healthy level.
One, transformer runs what all sorts of medium unusual appearances reach breakdown to form a reason:
(one) sound is unusual
When moving normally, because alternating current passes transformer winding, in core generation is handed in periodicly change magnetic flux, cause silicon steel piece magnetism is qualitative adjustable, the electromagnetism strength effect between the juncture of core and the lead that fold the magnetomotivity between the layer and winding causes vibration, give out " buzz " noise is successive, even, this attributes normal phenomenon. If transformer appears breakdown or move abnormal, sound is met unusual, its are main the reason has:
When 1. transformer overload moves, tone tall, volume is large, can give out heavy " buzz " sound.
When load of 2. great power is started, when if contain commutator of electric arc, silicon controlled rectifier,waiting for bear, bear change is big, because of harmonic action, the instant inside transformer is given out " wow wow " sound or " chuckle " intermittent sound, the finger when surveillant measuring instrument is expressed happens swing.
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