Another 2391 question!

[tex431]

State the;
i) tests for insulation resistance to be undertaken on a 230v circuit contaning surge protection devices which cannot be disconnected. -I am i being dumb here? Phase-Neutral and Phase-Earth

ii)The test Voltage- 250V

Thanks

 

[spark 68]

Test across L-E, N-E and L-N, or L+N-E @ 250V, as the SPD is connected across L-N, L-E and N-E

Min resistance at least 1Meg Reg. 612.3 (BGB)

 

[Former Sponsor TM]

Just be careful to refer to 'E' as the Circuit Protective Conductor, 'L' as the Line conductor not phase conductor, and remember that Neutral is a 'live' conductor......City & Guilds will have you in anyway they can!

 

[wallyanker]

State the;
i) tests for insulation resistance to be undertaken on a 230v circuit contaning surge protection devices which cannot be disconnected. -I am i being dumb here? Phase-Neutral and Phase-Earth

ii)The test Voltage- 250V

Thanks

If it can not be removed then connect L and N together and test to earth @250v, note it on the test sheet as limitation.

 

[spark 68]

If it can not be removed then connect L and N together and test to earth @250v

It is for the 2391, they may, depending on the centre, want the full test sequence.

You can never tell with C&G