Voltage Limiting Device
Entec’s Voltage Limiting Device(ETOVPD22) is used to prevent the over-standard voltage that can potentially put operators and passengers in danger of high voltage. It is equipped with protection function according to relevant human safety regulations of KS C IEC 62128-1 to keep the voltage of the rail in a safe range.
Because of integrated with measurement, protection, control, communication modules, it can collaborate with the traction power protection system to realize various functions.
Enhanced Safety
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- Fast shorting in a level of microseconds provided based on the human safety characteristic curve
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- Reclosing function integrated with ETCPU200 control module
Reliability and Compatibility
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- High endurance of contactor mechanical operation
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- Reliable SCR with fast response
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- Compatible with components with the same rating and same standards
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- Easy maintenance
Other Technical Features
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- ETOVPD22: 2 sets of shorting device-Bidirectional SCR modules wired with contractors in parallel
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- ETCUP200: Composition of SCR driver, CT/PT, measurement, protection, control, and communication modules