Troubleshooting faults in Solar PV systems can quickly become confusing and unsafe if the basics aren’t checked first.
Unclear signals, grounded conductors, or loose connections often lead to inaccurate tracing and wasted time on site.
Here’s how to resolve these challenges:
1.Problem: Risk of electrical shock or equipment damage when opening enclosures.
Solution: De-energise the system where required before accessing conductors.
2. Problem: Ground faults or unexpected continuity giving false readings.
Solution: Ensure the DC system is ungrounded with no conductor connected to ground.
3. Problem: Inaccurate readings due to poor test lead contact.
Solution: Always verify that test leads are securely connected before measuring.
4. Problem: Signal detected across multiple branches, creating unclear tracing paths.
Solution: Reconfirm which side the signal was injected from and ensure the test string is isolated. Use the clamp with the BP filter activated and set the transmitter to array mode for cleaner, more accurate tracing.
Strong foundations lead to safer diagnostics and more reliable PV performance.
Bonus tip: a Fluke Corporation GFL-1500 nearby never hurts
Comtest
Tel. +27 10 595 1821
sales@comtest.co.za
