Fike Quadnet - Network Continuity and Insulation Test Results

Quadnet Control Panel Engineering and Commissioning Manual
67
Network Continuity & Insulation Test Results
After installation of the cable, and termination into all the relevant back-boxes, take cable continuity and
insulation readings. Make sure that all the cables are dressed smoothly and neatly into their back-boxes in
order that they will not be disturbed after the readings are taken.
The commissioning engineer will require these readings, along with correctly marked ‘as-wired’ drawings
and completed configuration sheets, before attending site to commission the system.
CORE
CONTINUITY READING (OHMS)
Main Ring
+ve to +ve
-ve to –ve
Screen to Screen
A reading of approximately 1.2 ohm per 100 metres of 1.5 mm
2
cable is expected and any significant
variation from this should be investigated. If the above readings are satisfactorily showing circuit continuity
then you may also take the reading below.
CORE
INSULATION READING (OHMS)
Main Ring
+ve to -ve
+ve to Screen
-ve to Screen
Screen to Mains Earth
No continuity should be seen between cores and a reading of OL should be shown on the test meter. Any
significant variation from this should be investigated. If the readings are satisfactory then the loop wiring is
largely proven other than for faults such as complete polarity reversal.
Site Name & Address:
Installation Company:
Testing Engineer:
Signature:
Date: