Overview
The 25kVA Static Inverter is designed and manufactured for use in Indian Railways coaches. The Inverter uses IGBT technology to convert a nominal 110 V DC supply into a 415 V AC, 3 phase, 50 Hz power supply for air conditioning units and associated loads, such as coach fans and lights, water raising apparatus, evaporator fans, condenser fans, compressors etc., that are installed in the conventional coaches of Indian Railways.
The inverter operates by boosting the DC input voltage to establish an intermediate dc link voltage & modulating this link voltage with a three-phase IGBT bridge to produce a pulse width modulated three-phase output voltage. The Inverter output is internally filtered to produce a pure sinusoidal output waveform.
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Technical Specifications
- Input Voltage: 90-140VDC +/-15% ripple
- Output Voltage: 415Vac, 3 phase
- Frequency: 50Hz output
- User Interface: LCD/Keypad, with LED status display
- Communications: Isolated RS-232 Fault Download Data
- Application: Traction
- Isolation: No
- Cooling: Naturally Cooled
- Ambient: -5°C to 55°C
- Environmental: Vibration rated & EMI