Making adjustments to GEC CDG36 (or CDG31) relays

[arrow123]

Hi
Does anyone have a manual for the GEC CDG36 (or CDG31 Relay) that they could link me to?
We have several relays that have shown up as not quite following the curves and need some tweaking. I remember having some literature a long time ago of which screw to adjust to alter which setting (moving magnets across the disc etc), but I can't find it any longer.
I have tried the Alsthom and Schneider websites and sent them emails asking, but so far no luck in hearing back from either.
The main issue appears to be with the PU (and the timing at the lower end of I) and I vaguely remember twiddling a few screws to correct this years ago.
Thanks
Peter

 

[defreitas]

I've posted the manual I have for a GEC CDG11, but a quick search on Google shows this...

https://www.google.com.au/#hl=en&sc...10,d.dGI&fp=398dc2b0216c3b11&biw=1280&bih=871

Hope this is good enough help.


Dan de Freitas
Australia

Dan de Freitas
Test Tech

 

[mgtrp]

If I've done the attachment thing right, the attached operating manual has details for calibrating a CDG11 relay. The CDG31 is just a three-element version of the same relay, hopefully its similar enough that you can work it out.

Regards,
mgtrp

 

[arrow123]

Thankyou both for your responses. Both are great links!! MGTRP - your book was particularly interesting and I believe it should solve my problem - thankyou.

Regards
Peter