TRFI
TRFI series single-phase or three-phase units manufactured on demand and designed to feed auxiliary signalling and control circuits for railways or subways. These transformers comply with CEI EN61558-2-4 with the incorporation of specifications required by IS 365 railway standard. Specifi cally, the transformers use low loss laminations that allow normal operation with frequency fluctuations of ±5% and voltage fluctuations of ±15% with respect to nominal values. Insulation is class H and the maximum overtemperature is 50°C above ambient temperature.
Technical data
Single-phase series power: 30 ÷ 10000 VA
Three-phase series power: 500 ÷ 30000 VA
Input voltage: 200 ÷ 1000 VAC
Output voltage: 200 ÷ 1000 VAC
Duty cycle: continuous
Frequency: 50/60 Hz
Protection rating: IP 00
Terminal block protection rating: IP 20
Ambient temperature: +40°C MAX
Isolation voltage: 3kV
Protection against direct and indirect contact: class II
Winding material: copper
Standards: IS365 EN61558-2-4
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