How do you test a 3 phase RCD?

How do you test a 3 phase RCD?

RCD-3P-32A

1. Insert the three phase RCD testing adaptor’s plug into the three phase socket outlet.
2. Turn on your RCD/PAT tester to the RCD test function.
3. Plug the RCD/PAT tester’s test lead cable into the L1 socket of the RCD-3P.
4. Ensure the RCD is reset and switched on at this stage.
5. Conduct the desired RCD tests.

How do you test a 3 phase RCD without neutral?

Testing 3 phase RCDs without neutral or earth connections is possible by testing across the RCD if the rating of the tester is sufficient. Many 3 phase RCDs do not have a neutral connection. Standard RCD testers are usually only designed for single-phase operation.

How does a 3 phase RCD work?

It works like this: The 3 phases are fed from a DB with 3036 fuses to seperate 1 phase RCD’s mounted in an enclosure. They then go through a contactor to supply seperate heaters which are immersed in water.

When performing a RCD test the RCD should be tested at?

The person carrying out the testing must identify the operating characteristic of the RCD to determine whether the device should be tested at a current greater than or equal to either 5Δn or 0.25 A as appropriate.

How do I know if my RCD is bad?

If your RCD trips and you can’t reset it, or after resetting, it trips again in a few minutes, you may have a faulty device. Your RCD should be tested regularly and according to the standard dictated by the AS/NZS 3760:2010.

Do you need a neutral for an RCD?

A RCD will still function without a neutral connection, however the test button may not operate. Some RCDs have the trip test circuit connected between phases while others are between phase and neutral. Your supplier will be able to supply the correct resistor for the RCD to be installed.

Will an RCD work without earth?

RCD does not necessarily require an earth connection itself (it monitors only the live and neutral). In addition it detects current flows to earth even in equipment without an earth of its own. This means that an RCD will continue to give shock protection in equipment that has a faulty earth.