resistance between phases?

[solo2771]

hi just wondered how high the resistance between phases should be on a 3 phase board?

 

[xraytek]

Insulation resistance?

>1M and tested at 500Vdc, but if the reading is <2M then investigation is required.

 

[solo2771]

the measurments we got were very low less than 100 ohms, on the board are mainly single phase but there is a 3 phase air con unit and a 3 phase supply to another dis board?

 

[pushrod]

sounds like something is still connected.

 

[cosine]

yur testing through something make sure you have everything isolated

regards
cosine