Tyd500/ 3-0.005h 500kv Voltage Transformer

Introduction:

Anti-resonant voltage transformer, with 4 windings, nominal voltage 500 kV, from transformation ratio 500: √3 / 0.1: √3 / 0.1: √3 / 0.1kV, with

contact terminals for connecting three wires in phase. Rated voltage of the secondary windings: Winding No. 1 for power supply of relay

protection and automation circuits (connection according to the “star with zero” scheme) – 100 /: √3V Winding No. 2 for power supply of

metering and electrical metering circuits (connection according to the “star with zero” scheme) – 100 /: √3V Winding No. 3 additional

(connection according to the scheme  “Open delta”) – 100V Accuracy class 0.2 / 0.2 / 3

Technical indicators 4.1. Rated secondary load of the protection winding (10 PR) – 20VA. The rated maximum current ratio for the protection

winding (the ratio of the max short-circuit current to the rated primary current of the CT, at which the CT error is less than 10% at a given

secondary load) is 30. The intrinsic resistance of the current transformer is not more than 36 ohms. The rated secondary load of the

measurement and metering windings is 30VA. – Wind head – V = 29m / s. – Ice-covered area – II (10 mm) – Minimum temperature – 25 0

FROM – Maximum temperature – +50 0 FROM – Seismic – 7 points on the MSK-64 scale – Equipment insulation – II * (specific creepage

distance 2.25 cm / kV) in accordance with GOST 9920-89

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