"Starter" in Protection Schemes 2

[Ashdgee]

Good day protection and control experts.

Im relatively new in the P&C field. Just a silly question, what is a "starter" when referred in the context of protection schemes. I have been seeing this term while goping through various papers on distance protection.

Your responses are helpful.

 

[RRaghunath]

'Starter' used to be there in old distance relays.
Present day numerical relays don't use this terminology. The settings are directly in terms of Zone-1, 2, 3 etc.
In old relays, 'starter' reach setting seems to be beyond all zones and was used to trigger individual zone elements.

 

[Ashdgee]

@RRaghunath

Many thanks for explaining this