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Current transformer built-in The built-in transformers of current are calculated on a class of tension of 35, 110 and 220 kV rated current of loading 1 or 5 And yes intended for a signal transmission of measuring information to measuring devices and (or) devices of protection and management in installations of alternating current of frequency of 50 and 60 Hz. They are built in the closed stationary blocks of the industrial electrotechnical equipment: high-voltage switches, power transformers, through passage and basic insulators. Transformers are manufactured according to the standard scheme, but in coordination with the manufacturer can have the non-standard circuitry decision. Their windings can be carried out both with taps, and without them. Materials with the raised heat stability class according to GOST 8865-93 can be applied to use on objects of nuclear power in the built-in transformers of current. A climatic modification of transformers - U3, UHL3, HL3, T3 according to GOST 15150-69.
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