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Silicon Rectifier

Silicon Rectifier

Entec's Traction Silicon Rectifier ETSR21 and ETSR22, as a crucial part in DC railway traction power system, are designed to convert AC power into DC power while withstanding the harsh operating condition in real application.

750V DC rated ETSR21 is mostly used for Light Railway Transit system and the capacity can be designed from 1000kW to 4000kW to suit different situations.

ETSR22, rated 1500V DC, is designed to be used in Metro System where the load requires a higher voltage level. The capacity of this Traction Rectifier can also be customized to apply to different systems.

Robust Enclosure
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  • Self-standing cubicle
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  • Doors on both front, back and side
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  • Dew condensation space
High Reliability
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  • Self-cooling without fan
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  • Snubber circuit on AC side for protection
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  • RC circuit, varistor on DC side for protection
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  • Real time monitoring and alarm (temperature and operating condition)
Sophisticated Engineering
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  • Silicon 12 pulse rectification
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  • Duty class VI (Heavy traction)
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  • High efficiency >99%%
Electrical ratings
Description ETSR21 ETSR22
Rated input voltage [Vac] 300 / 1200 600 / 1200
Rated output voltage [Vdc] 750 1500
Rated current [A] 1333 / 2667 1333 / 2000 / 2667
Rated capacity [kW] 1000 / 2000 2000 / 3000 / 4000
Rated frequency 50 / 60
Power frequency withstand voltage [V] 2350 4140
Over-load rating Continuous at 100% current / 2hrs at 150% /
1min at 300% [Class VI]
Input system Rectifier Tr [△/△ or △/△-Y]
Output pulse 6P or 12P
Cooling method Self-cooling
Diode type Silicone
Diode max unbalanced current < ±10%
Full load efficiency > 99%
Maximum noise standard < 60dB
Control operating voltage 110Vdc and others
Maximum environmental temperature 40℃
Degree of protection IP 31
International standard IEC 60146-1-1, IEC 60146-2

* Other ratings are available upon request.
* ENTEC reserves the right to change the design and specification without notice