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field failure protection relay
- Thread starter tandin
- Start date
Well, English Electric merged with GEC in 1968, and then with Alstom in 1989 (I think).
So your ZTO relays are over 45 years old now.
The UK support can be found by phone on +44 1785 250070
Or by email on
There is a contact form to fill in.
They no longer give an email address
They should be able to help you.
My records show the ZTO as pole slipping protection, and not a field failure relay. Although field failure can lead to pole slipping!
Good luck
So your ZTO relays are over 45 years old now.
The UK support can be found by phone on +44 1785 250070
Or by email on
There is a contact form to fill in.
They no longer give an email address
They should be able to help you.
My records show the ZTO as pole slipping protection, and not a field failure relay. Although field failure can lead to pole slipping!
Good luck
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