Vivax Metrotech vLocDM, User Handbook Manual

Page: 15 / 54

Page 9 of 47
4.4 Connecting to the Pipeline
4.4.1 Connecting at a CP (Cathodic Protection) Statio
WARNING
Connecting to the CP station involves removing connections from the CP transformer
rectifier and should only be performed by authorised personnel. Always make
connections before switching on the unit. Switch off before disconnecting the transmitter.
Method:
1. Make a note of the CP settings (Output Current and Voltage settings). This is important as the settings
must be checked to ensure they return to the original settings when the connections are re-made.
2. Switch off the CP transformer rectifier and allow the residual voltage to dissipate. This may be a few
seconds or a few minutes depending on pipe condition.
CP
Station
-Ve +Ve
Mains Socket
DC Output
To Anode Bed
Standard CP
Station Connections
3. Disconnect the output wires connecting the CP station to the pipeline and anode bed. If there is an earthed
mains socket at the station, connect the transmitter mains power lead to the socket.
4 Transmitter Functions and Operations