Home > Products > Power transformers for railway infrastructure, voltage classes 10, 110, and 220 kV > Three-phase oil-immersed railway transformers type ТМЖ

Three-phase oil-immersed railway transformers type ТМЖ

Three-phase oil-immersed transformers of the ТМЖ type with a power rating of 25–1600 kVA, with natural oil cooling and off-load tap changing, are connected to an AC network with a frequency of 50 Hz and are intended for converting three-phase AC electric power at a voltage of 27.5 kV into AC power at 0.4 kV to supply railway electrical equipment. The transformer is designed for operation in moderate climate regions at an altitude not exceeding 1000 meters above sea level. The transformer is manufactured in accordance with O’zDSt and Ts 00212908-08:2018 standards.

Get the cost

Description

Power range

Power range: 25÷1600 kVA
Primary winding HV voltage: 27.5 kV
HV side voltage regulation with ПБВ: ±2×2.5%
Climatic design: У1; УХЛ1; T1

Transformer symbols

Т – Three-phase transformer
М – Oil cooling with natural oil and air circulation
Ж – Railway
Х – Rated power, kVA
27,5 – HV winding voltage, kV
У1 – Climatic design and installation category according to GOST 15150

Characteristic

Technical Specifications of ТМЖTransformers, Power 25÷1600 kVA
Rated power, kVA	Rated voltage, kV	Winding connection scheme and vector group	Losses, W		Short-circuit voltage, %	No-load current, %
Rated power, kVA	Rated voltage, kV	Winding connection scheme and vector group	No-load	Short-circuit	Short-circuit voltage, %	No-load current, %
25	27,5/0,4	У/Ун-0	175	610	6	2,0
100	27,5/0,4	У/Ун-0; Д/Ун-11	380	1970	6	1,2
160	27,5/0,4	У/Ун-0; Д/Ун-11	560	2650	6	1,0
250	27,5/0,4	У/Ун-0; Д/Ун-11	800	3700	6	0,8
400	27,5/0,4	У/Ун-0; Д/Ун-11	1090	5900	6	0,6
630	27,5/0,4	Д/Ун-11	1700	8500	6	0,5
1000	27,5/0,4	У/Ун-0	2000	1150	7,2	0,4
1600	27,5/0,4	У/Ун-0	2750	18000	7,2	0,3

Overall and Mounting Dimensions

Transformer Dimensions
Rated power, kVA	Length (L), mm	Width (B), mm	Height (H), mm	Distance between centerlines of channel bars		Oil weight, kg	Total weight, kg
Rated power, kVA	Length (L), mm	Width (B), mm	Height (H), mm	Along longitudinal axis (A), mm	Along transverse axis (A1), mm	Oil weight, kg	Total weight, kg
25	1040	820	1310	400	550	175	600
100	1200	840	1640	420	605	310	1040
160	1300	860	1700	420	605	380	1290
250	1400	930	1890	420	605	330	1700
400	1460	960	2000	760	760	565	2095
630	1950	1240	2130	820	820	950	3500
1000	2310	1270	2385	1070	1070	950	3850
1600	2610	1285	2560	1070	1070	1340	4800