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TFTP-31500/110(150)-U1(UHL1) type transformers for mobile traction substations

TFTP power transformer, three-phase, three-winding, bell-type, designed for railway applications, with forced air and oil circulation, rated power 31500 kVA. Power transformers rated 31500 kVA and above are manufactured with bell-type tanks. Designed for AC electrified railway power supply. Designed and manufactured in accordance with GOST R 51559.

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Description

Power range

HV winding rated voltage: 110(154) kV
MV winding rated voltage: 38.5 kV
LV winding rated voltage: 27.5 kV

Transformer symbols

T — Three-phase transformer
F — Side-mounted bushings configuration
T — Three-winding transformer
P — Designed for traction power supply of electrified railways and converter units
X — Rated power, kVA
110(150) — Voltage class, kV
U1 / UHL1 — Climatic version and installation category in accordance with GOST 15150

Characteristic

Main Technical Characteristics
Parameter name	TFTP-31500/110	TFTP-31500/150
No-load losses, kW	33	33
Short-circuit losses, kW	169	169
No-load current, %	0.6	0.6
Short-circuit voltage (HV–MV), %	10.5	10.5
Short-circuit voltage (HV–LV), %	17.5	17.5
Short-circuit voltage (MV–LV), %	6.5	6.5
Overall dimensions, mm
L — length	7500	7600
B — width	3250	3250
H — height	3850	3850
Oil weight, kg	17300	17300
Shipping weight, kg	62700	62700
Total weight, kg	73000	73000

Dimensional drawings

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