ABB ZPOW-591 digital protection relay

ABB ZPOW-591 digital protection relay

ABB ZPOW-591 is a digital protection relay used for power system protection in high-voltage power grid. It has multiple protection functions, which can detect parameters such as current, voltage, frequency and power factor, so as to take protection measures in time.

Here are some possible protection functions:

Overcurrent protection: When the current exceeds the set threshold value, ZPOW-591 will send a signal to trigger the circuit breaker or cut off the power supply to prevent the circuit overload.

Overvoltage protection: When the voltage exceeds the set threshold, ZPOW-591 will send a signal to take protective measures in time.

Low-voltage protection: When the voltage is lower than the set threshold, ZPOW-591 will send a signal to take protective measures in time.

Frequency protection: When the frequency exceeds the set range, ZPOW-591 will send a signal to take protective measures in time.

Ground fault protection: In case of ground fault in the system, ZPOW-591 can detect and send signals so as to take protective measures in time

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