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Home > Products > Traction transformers for electric locomotives > ONDCE-5700/25N-U2 type transformer

ONDCE-5700/25N-U2 type transformer

product
The transformer is designed for use on mainline passenger electric locomotives for conversion of overhead contact line voltage into traction motor circuits, excitation systems, auxiliary services (heating and onboard power supply), and for reverse energy conversion from traction motors back to the contact line. Oil circulation is provided by an electric pump. The pump is mounted on the transformer and supplied as a complete assembly. Climatic category U, installation type 2 in accordance with GOST 15150 and GOST 15543.1.
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Description

The transformer is designed for use on mainline passenger electric locomotives for conversion of overhead contact line voltage into traction motor circuits, excitation systems, auxiliary services (heating and onboard power supply), and for reverse energy conversion from traction motors back to the contact line. Oil circulation is provided by an electric pump. The pump is mounted on the transformer and supplied as a complete assembly. Climatic category U, installation type 2 in accordance with GOST 15150 and GOST 15543.1.

Power range

Transformer symbols

О – Single-phase
NDC – Forced oil and air circulation with directed oil flow
E – Designed for electric rolling stock applications
5700 – Rated power, kVA
25 – Line winding rated voltage, kV
N – Floor-mounted design
U2 – Climatic category and installation type in accordance with GOST 15150

Characteristic

Main Technical Characteristics
Parameter
Value
Transformer type
ONDCE-5700/25 Н-У2
Rated power of line winding, kV∙A
5683
Rated voltage of line winding, kV
25
Supply frequency, Hz
50
Rated voltage of traction winding 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, kVA
243
Rated voltage of auxiliary winding terminals, V а₃-5     225
а₃-х₃     405
Rated power of excitation winding, kVA 175
Rated voltage of excitation winding terminals, V а₄-6     135
6-х₄     135
Rated power of heating winding, kVA 300
Rated voltage of heating winding terminals, V a₅-x₅ 3012
Total transformer losses, kW 57
Winding connection diagram 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

Dimensional drawings

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The transformer is designed for use on mainline passenger electric locomotives for conversion of overhead contact line voltage into traction motor circuits, excitation systems, auxiliary services (heating and onboard power supply), and for reverse energy conversion from traction motors back to the contact line. Oil circulation is provided by an electric pump. The pump is mounted on the transformer and supplied as a complete assembly. Climatic category U, installation type 2 in accordance with GOST 15150 and GOST 15543.1.
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Tusov Artem Aleksandrovich
Deputy Director for Marketing and Sales

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