EMR4-W phase monitoring relay [t-head2]

The phase monitoring relay EMR4-W monitors the voltage height as well as the field rotation to provide protection against destruction or damage of single system parts. That means protection against destruction or damage of single system parts. Here the minimum low voltage and also the maximum overvoltage can be easily set to the required voltage within a defined range.

An ON- or Off delay can be set. In the On-delay position short voltage breaks can be bridged. The off-delay position allows a failure storage for the set time.

The delay time can be set between 0.1 and 10 s.

The relay activates with the correct rotation and voltage. After drop-out the device reactivates when a the voltage exceeds a 5 % hysteresis.