Bulletin K Series Voltage Sensor

Voltage Sensor Relay

The ICS K Series voltage sensor relay is a sensor that monitors line voltage and provides a relay contact when the line reaches a predetermined level. The pickup voltage setting is adjustable and determines the point of transfer as the input increases. Dropout voltage is fixed as a percentage of the pickup and controls retransfer as the input decreases.

When the pickup level is detected, the sensor energizes the relay coil and the contact transfer is made. When the dropout level is detected, the sensor retransfers the contacts to the de-energized state of the relay. A voltage sensor relay can be used to transfer between preferred and alternate voltage sources. It could also be used as a line monitor that detects a low or high voltage condition of a single phase or three phase source.

Voltage Sensor Selection

Sensor Part No.	Relay Contacts	Coil Voltage
K8004 K7833 K8005 K7826	3PDT, 5A, Resistive 3PDT, 5A, Resistive DPDT, 5A, Resistive DPDT, 5A, Resistive	120 VAC, 1 Phase 240 VAC, 1 Phase 120 VAC, 3 Phase 240 VAC, 3 Phase
Sensor Part No.	Pickup Voltage (±3%)	Dropout Voltage
K8004 K7833 K8005 K7826	Adjustable 82% to 97% of Input Adjustable from +10% to +15% and -10% to -25% of Input Adjustable 82% to 97% of Input Adjustable from +10% to +15% and -10% to -25% of Input	Fixed 80% to 85% of Pickup Fixed 93% to 97% of Pickup Fixed 93% to 97% of Pickup Fixed 93% to 97% of Pickup

Sensor Relay Dimension: 3.625"h x 1.75"w x 2.375"d
Standard 11 Pin Blade Plug-In Base for
Single Phase or Three Phase Relay

Single Phase 3PDT Bottom View

3 Phase 2PDT Voltage Sensor Diagram

Three Phase DPDT Bottom View

*Contacts shown with relay not energized