TPIS Series
Invertеr is designed to transfer excessive regeneration power from DC overhead system into AC power supply system at traction substations of the mainline railways and to ensure electric braking of the electric locomotives on mountain slopes.
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Design features:
- Forced air cooling of the thyristor blocks.
- Copper busbars to minimize losses and enhance heat dissipation.
- Busses are connected to thyristor units with the use of special flexible dampers that allow to compensate heat expansions of the busses due to heating-up and to exclude mechanical stresses in the construction.
- Control system is located in a separate control cabinet.
Electric circuit:
- Inverter is manufactured according to 6 or 12 -pulse circuit and is presented in two design options:
- single or double bridge topology,
- two reverse stars with current-balancing reactor.
- Each thyristor is equipped with conductivity self-diagnostic circuit.
- Thyristor diagnostics is based on the voltage value measurement at different work sequence stages.
- Current and voltage measurement is ensured with the use of Hall effect based sensors.
- Control system is based on TET ESTEL manufactured controller. Operator’s control panel is equipped with an LCD display.
- Invertors are designed to comply with RoHS and REACH requirements.
| Rated output power, kW | 7450 |
| Rated output frequency, Hz | 50, 60 |
| Rated voltage AC, V | 3300 |
| Rated current AC (phase), А | 1600 |
| Rated voltage DC, V | 3800 |
| Rated current DC, А | 2000 |
| Allowed over-current time RMS value for every 30 minutes should not exceed rated current value | @125 % – 900 s, once in 2 hours @150 % – 120 s, once per hour |
| Cooling | forced air |
| Power factor (calculated), minimum | 0,95 |
| Efficiency (calculated), minimum | 0,98 |
Protection class: | |
| — power circuit | IP21 |
| — control system | IP54 |
| Ambient temperature range, °С | from minus 25 to +45 |
| Max. relative air humidity at +25°С, % | 98 |
| Max. altitude above sea level, m | 2000 |
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