More on Protection Relay

Is there any dv/dt protection relay?
If yes, Where & why it is used?
Is any Web-site is having this write up on it?
Who are the manufacturers of this?
Pl let me know, I am very thankfull for you.
Regards,

CM

 

[electricpete]

I haven't heard of that one.

 

[sanvapat]

Are u talking about df/dt, by any chance ??

 

[BJC]

I think you want a time overvoltage relay.
Look up the General Electric type IFV

 

[RAgrawal]

yes there lot of relays which have got dv / dt protection. i have come across Alstom, L & T, AVK SEGC dv /dt relays. as far as i know, these relays are used as islanding relay.

 

[peterb]

RArawal -
I would be interested to know which model Alstom relays provide the dv/dt function. I checked their website, also that of AVK SEG, and I wasn't able to find any reference to dv/dt function in a cursory check. BTW, who are L & T? I confess that I am not familiar with that name.

 

[wbd]

By dv/dt relay, could you be refering to a volts/hertz relay?