The High Voltage Wireless Phase Comparators WPC1000 & WPC2000 use a Transmitter module and a Receiver module to determine the Phase Relationship between two energised conductors at the same nominal voltage and frequency, without the need for connecting cables. Designed to comply with the requirements of IEC 61481 for use on system voltages up to 36kV.

WPC Transmitter (TX) and Receiver (RX) are battery operated electronic contact devices that give clear visible indication of the status of the line under test. By means of super bright LED’s and a high intensity buzzer, they are able to determine the phase relationship between two points at the same nominal voltage and frequency. This ensures clear indication even in conditions of bright sunlight and high background noise.

Voltage checking is performed when the Transmitter unit touches the live conductor. If the voltage on the conductor is above the voltage threshold, it will set off the Transmitter. Subsequently, it will automatically start the voltage checking sequence. If the line is live after 5 seconds, both RED LED’s will light solid and the Line Phase Angle will be transmitted to the Receiver.

The Receiver Unit performs Voltage Checking when it touches the live conductor. If the voltage on the conductor is above the voltage threshold, it will set off the Receiver. Subsequently, it will automatically start the voltage checking sequence. If the line is live after 5 seconds, the RED LED will light solid.

When the phase angle shift between the Transmitter and Receiver is nominally ≤±10°, the IN PHASE Condition is indicated by RED LED lighting solid, GREEN LED lighting solid and the Buzzer sounding continuously. If the phase angle shift between the Transmitter and Receiver is nominally >±20°, the OUT OF PHASE Condition is indicated by solid RED LED lighting only.

*Each module must be used in conjunction with suitable insulating operating rods, to ensure a safe working distance from the HV source.

An accessory kit is available that will allow Wireless Phase Comparators to be used for High Voltage Phase Comparison within Switchgear. By using this kit, it eliminates the need for any trailing wires within the switchgear cubicles. It also allows Phasing to be carried out over a larger distance within a room.