GE generator protective relay 2

[slavag]

Dear Colleagues.
Could you help me.
I'm looking documentation for old type GE generator protection relay.
We provide now some retrofit and I need tech documentation.
Customer dosen't have it.
Type of relay:
function 46 SGC21C
function 40 CEH51A
function 59GN IFV51DD
function 32 GGP53C
function 51V IFCV51AD

Basler BE1-24 function 24G

Thanks
Slava

 

[davidbeach]

http://www.geindustrial.com/cwc/Dispatcher?REQUEST=PRODUCTS&famid=31&lang=en_US

 

[rbulsara]

Looks like you have all discrete (separate) relays for each function. If retrofitting, I would recommend you look at multifunction digital relays such as GE SR489 generator protection relay. It will have all the functions you mentioned and more. You only activate the ones needed. You simply discard existing relays and not worry about their documentation.

 

[slavag]

Dear David.
Thank you for your help.
Regards.
Slava

 

[slavag]

Hi rublsara.
We have new relays (multifunction relay, bur from other company), finished design and build cubicle.
I calculated all setting again, but before commissioning, I would like check myself again. For this propose I need tech documentation of GE.
Thanks
Slava

 

[rbulsara]

Slava:

Great! I would trust the new calculated settings rather than matching or even comparing with the existing.

What's the benefit of comparing to old settings? Who is to say that the old settings were properly calculated. In fact, there may be a chance of misinterpreting the old settings.

 

[slavag]

Rbulsara:
You are right.
But my problem is not setting, my problem is customer.
Before two years, I'm provide (sorry for I am, I mean our team)retrofit for two generators for same customer, same history, customer requested compare new setting to old.
I check, change, but in dynamic and on load test puted our new setting. Different between these cases:
Now it is generator GE and protection is GE, we retrofit GE relays to relays from other company.
In previos case we retrofit old protection relay to new from same company.
And you also right in other.
In both of case, old setting is not so correct.

I think is also intresting thread: retrofit of old protection