Rơle bảo vệ Voltage Frequency Protection Relay Model VPR-A, Orion Italia

Rơle bảo vệ Voltage Frequency Protection Relay Model VPR-A, Orion Italia

Rơle bảo vệ Voltage Frequency Protection Relay Model VPR-A, Orion Italia

The voltage protection relay VPR-A has been designed to measure the line or phase RMS voltage, frequency and unbalance under normal conditions or under disturbances. This information is internally processed by the microprocessor, to take the voltage protection actions defined under ANSI or IEC standards. The different functions provided by the VPR-A may be classified into the groups mentioned below.
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