Transformers are manufactured in voltage classes from 6 to 35 kV. Transformers of placement category 2 according to GOST 15150 are designed for installation in complete switchgear (switchgear) internal installation or other closed switchgear (ZRU).
Transformers of placement category 1 - for installation in open switchgear (ORU).Transformers are used to transmit the signal of measuring information to devices iz-measurement, protection, automation, signalling and control in electrical circuits of alternating current frequency 50 or 60 Hz. Transformers by design - single-phase, by design principle - earthed, supported, with moulded insulation, by number of transformation stages - single-stage, with one, two or three secondary windings.
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