nVent RAYCHEM WinterGard Cable 230V Mode D'emploi page 21

Proceed as follows:
• Connect one lead to the heater braid.
• Connect the other lead to both heater conductors together.
• Apply voltage. The resistance reading must be greater than 100 MΩ.
• If the insulation resistance is less than this, the heater may be damaged. Where possible, locate the fault and
rectify. Record the insulation resistance value on the Installation Test Record.
Finishing
Install a grid over the drain to ensure that the heat strip is protected from damage.
Note: A 30 mA residual current device (RCD) is required for the drain tracing. Ensure that there are no more than
60 m of heating cable connected to each 30 mA rcd.
Finishing
Complete Sensor
Complete the installation of the sensor (where necessary).
Install Panel and Controls
Install the electrical panels according to the manufacturer's instructions.
Install control units, thermostats and manual control equipment in accordance with the manufacturers' instructions.
Complete Wiring and System
Follow applicable local regulations.
Operation
Initial start-up
Electrical requirements
Complete all electrical testing following applicable local codes and practices. Inspect all wiring for conformance to
design drawings. Check for correct rating on all protection devices.
Controller checks
Check controller in accordance with the instructions provided with the unit.
Resistance tests
Perform final resistance test to ensure that the connection lead and supply cable have not been damaged since installation.
General operation and maintenance
The system has no moving parts and therefore requires minimum maintenance. Local maintenance codes and
requirements for electrical equipment should be complied with.
Circuit breakers should be checked periodically. Residual current devices (RCD) should be tested at least annually.
Periodically inspect the system controls. Operate the controls to ensure that they function correctly.
Max. exposure temperature for heating cable: 65°C. Installer must supply operator/owner with the layout drawing.
Conductors
Braid
2500 Vdc Insulation resistance tester
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