Three-phase monitoring/protection relay for overvoltage, undervoltage, and phase sequence/failure control

Voltage control relay with return to operating state timer, voltage increase and decrease control, minimum and maximum voltage value adjustment, with GKV-12F phase sequence control, TENSE

The operating algorithm of the voltage control relay is as follows:

When the relay is connected to the supply voltage and the voltage values correspond to the set values, the relay is activated and the relay LED () lights up. When the voltage values exceed the set values, the corresponding fault LED lights up, waits for a delay time (DT), after which the relay is deactivated and the relay LED turns off. When the voltage returns to normal values, the device waits for a reset time (RT), after which the relay is activated and the relay LED lights up.

Required settings and error messages

• HV: high voltage setting, when the voltage rises above this value, the HV LED lights up.

• BT: low voltage setting, when the voltage drops below this value, the BT LED lights up.

• DT: delay time, waiting time before entering an error state.

• RT: reset time, waiting time before the relay responds when the voltage returns to normal.

Relayactivated: contacts 2 and 3 closed, 1 and 2 open.
Relay deactivated: contacts 2 and 1 closed, 3 and 2 open.

Technical Specifications

• Operating voltage: 3×380 VAC, 50/60 Hz

• Rated operating voltage: 220 VAC, 50/60 Hz

• High voltage: 230 V-300 V

• Low voltage: 140 V-210 V

• Delay time: 0.1 s - 20 s

• Reset time: 0.1 s - 20 s

• Operating power: < 6 VA

• Operating temperature: -20 °C to +55 °C

• Display: 4 LEDs

• Weight: 0.210 kg

• Contact: 5 A / 250 VAC (resistive load)

• Operating altitude: < 2000 m

• Wire diameter: 1.5 mm