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Transformer type ОНДЦЭ-5700/25Н-У2

The transformer is designed for use on mainline passenger electric locomotives to convert the contact network voltage into the voltage for traction motor circuits, excitation of auxiliary needs such as heating and train power supply, and also to convert the traction motor voltage back to the contact network, including excitation and train power supply. Oil circulation is provided by an electric pump. The electric pump is mounted on the transformer and supplied together with it. Climatic design: У, installation category 2 according to ГОСТ 15150 and ГОСТ 15543.1

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Description

Power range

Transformer symbols

О – Single-phase
НДЦ – Forced oil and air circulation with directed oil flow
Э – For use in electric rolling stock
5700 – Rated power, kVA
25 – Rated voltage of the network winding, kV
Н – Floor-mounted design
У2 – Installation category and climatic design according to GOST 15150

Characteristic

Main Technical Specifications of the Transformer
Parameter	Value
Transformer type	ОНДЦЭ-5700/25 Н-У2
Rated power of network winding, kV∙A	5683
Rated voltage of network winding, kV	25
Supply network frequency, Hz	50
Rated voltage of traction winding at terminals, V	а₁-х₁ а₂-х₂ 1260
	а₁-2, 2-х₁, а₂-4, 4-х₂ 630
	а₁-1, 1-2, а₂-3, 3-4 315
Rated power of auxiliary winding, kV∙A	243
Rated voltage of auxiliary winding at terminals, V	а₃-5 225
Rated voltage of auxiliary winding at terminals, V	а₃-х₃ 405
Rated power of excitation winding, kV∙A	175
Rated voltage of excitation winding at terminals, V	а₄-6 135
Rated voltage of excitation winding at terminals, V	6-х₄ 135
Rated power of heating winding, kV∙A	300
Rated voltage of heating winding at terminals, V	a₅-x₅ 3012
Total transformer losses, kW	57
Winding connection scheme and vector group	1/1-1-1-1-1-0-0-0-0-0
Oil weight, kg	1800
Total weight, kg	9300
Dimensions (L×B×H), mm	2055х1876х2445