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The converter employes state of the art DSP control and feeds the stabilized power to air conditioning and other loads of the railway passenger coaches.
Compliant Standards: IEC 60571, IEC 61287-1 and IEC 60310.
UNDERSLUNG CONVERTER IGBT BASED 25KVA HOG
for Railway Passenger Coaches
Technical Features
- Under carriage mounting of converter saves space for 2 extra berths inside the coach, enhancing revenue earnings.
- Sturdy MS sheet fabricated enclosure, with special protective surface treatment, makes it ideal for under carriage mounting.
- Under carriage mounting also prevents noise pollution, adding to passenger comfort.
- IP 65 protection makes the enclosure impervious to water, even in flood situations. High efficiency leads to low power consumption.
- Being naturally cooled the converter does not require any moving parts for cooling. This enchances life and reliability.
- Vacuum pressure impregnation using 'H-class' resins for filter inductors makes it ideal for traction duty.
- Maintenance free, being fully static.
- Converter's modular design makes it easily accessible through side panels and affords easy maintenance.
- State of the art DSP based system.
- Fault logging facility for ease of maintenance.
- Data transfer through serial communication between onboard display and under slung converter.
- Control and monitoring through onboard interactive VFD panel.
- PC interface facility for downloading of logged data and online monitoring.
Applications
- Converts single phase AC supply available from the locomotive transformer into 3-phase 415V, 50 Hz Supply.
- Feeds 3-phase power to the loads, viz., Air Conditioning, Lights, Ventilation, Pantry, and the like of the passenger coaches.
Technical Specifications
C. General
| Features | Values |
|---|---|
| Operating ambient temperature | 5°C to +55°C |
| Cooling | Natural Cooled |
| Control Voltage | Self Generated from Input Power |
| Mounting: Cubicle – 1 | Under slung |
| Mounting: Cubicle – 2 | On-board Mounting in Coaches |
| Weight | ≈ 350kg |
A. Input
| Features | Values |
|---|---|
| Minimum voltage | 465 V, 1ØAC, 50 Hz |
| Nominal voltage | 675 V, 1ØAC, 50 Hz |
| Maximum voltage | 925 V, 1ØAC, 50 Hz |
B. Output
| Features | Values |
|---|---|
| Output capacity | 25 kVA |
| Output voltage | 415V ±5%, 50Hz ±3%, 3-phase PWM Sine Wave |
| Current harmonics at full load | Less than 5% up to 20th harmonic |
| Efficiency at full load | ≥ 92% |
C. Control function
| Features | Values |
|---|---|
| Supply voltage | 77-140 V DC |
D. General
| Features | Values | |
|---|---|---|
| Operating ambient temperature | -5 to 55°C | |
| Cooling | Natural cooled | |
| Mounting | Main cubicle | Under carriage |
| Display panel | Onboard | |
| Size: main cubicle | 1630 × 1040 × 724mm | |
| Weight (including display (including display cubicle) | ~540 kg | |