Basic Testing Procedures

[breakerman]

wounderfull stuff...

 

[breakerman]

thank you for a most usefull post

 

[RexT]

Hi BillyBoBob,

Thats a great comment probably originating from Chris Kitchen or a guy called Dave Potter.

Good stuff, good info.

Best wishes,

Rex

 

[Jurasic Spark]

Hi BillyBoBob,

Thats a great comment probably originating from Chris Kitchen or a guy called Dave Potter.
Good stuff, good info.
Best wishes,
Rex

The Dave Potter way is:

Continuity of protective conductors including bonding.
Ring continuity test
Insulation resistance tests
Polarity dead (normally already confirmed with C & R)
Polarity live (confirmation of supply polarity at live side of main switch before turning on)
Loop impedance tests, Ze or earth electrode followed by Zs readings.
Earth fault current and short circuit fault current (PFC)
Rcd and other functional tests.

The greens are dead tests and the reds are live.

 

[kangeroo]

good stuff mate its handy havin it online instead ov rummaging through books could u put the range on the tester like megaohms or that used for each sequence of tests up as well?

 

[solarpowerwales]

what a cracking post most helpfull as im just starting, could anyone help me on a template for a complaints procedure, before my eic assesment. cheers or possible send it pm me for my email address sorry if im being cheeky

 

[Mancspark]

Could any1 add what settings the megger should be on for each test please?

 

[glynnis]

Could any1 add what settings the megger should be on for each test please?

Easiest way is to read the instructions your meter comes with if you are unsure?

 

[ricosuave]

SafetyFirst, You forgot one of the P's in CRIPPLER, Polarity live

 

[taylortec]

hi like your thread did notice rcd did not cover testing both sides of the pos -neg half cycles of the supply waveform and the highest recorded

 

[Sintra]

hi like your thread did notice rcd did not cover testing both sides of the pos -neg half cycles of the supply waveform and the highest recorded

Thanks for that taylortec. Now edited with those included.


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[obama6493]

some good stuff on there. it would have made my course a lot easier with a site like this to look trough and saved a small fortune on books mind i would have only spent it on tools

Sintra some useful info there for people like myself currently studying the 2391, however i believe the first part could be mis-informative to people who may have interpretated it as i have. Ze (external earth fault loop impedance taken at the origin) is not a dead test as described. Granted all outgoing sides of the DB main breaker should be open (in OFF position). However it is a live test and therefore will not be done after you perform a safe isolation.

 

[i=p/u]

good post for me anyway

 

[Sintra]

Sintra some useful info there for people like myself currently studying the 2391, however i believe the first part could be mis-informative to people who may have interpretated it as i have. Ze (external earth fault loop impedance taken at the origin) is not a dead test as described. Granted all outgoing sides of the DB main breaker should be open (in OFF position). However it is a live test and therefore will not be done after you perform a safe isolation.

I isn't described as a dead test. The test is carried out after the installation has been isolated safely so the earthing may be disconnected.


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[wade88]

Excellent post buddy really helpful to refresh things over in your mind like this. Top banana