The range comprises electro-mechanical relays for a range of auxiliary and tripping functions. Various combinations of coils, contacts, operation indicator flags can be specified. Options are also available for operate and reset modes. 7PG11 AR relays - general auxiliary functions – repeats, indications, scheme logic FR relays.
Features
Type AR relays are a range of electro-mechanical relays with up to 8 contacts and complying with IEC 61850. They can be supplied in most combinations of contact, flag and reset arrangements. The relays are identified by a series of numbers and letters which define important relay features. The following comments are provided as a guide to the various features of type AR relays.
Functions
The relays are identified by a series of numbers and letters which define important relay features.
•AR - 1
Up to 8 self reset contacts, in any combination of normally open or normally closed as required.
•AR - 2
Up to 8 self reset contacts, in any combination of normally open or normally closed as required.
•AR - 3
Electrical and hand set contacts supplied with a contact reset mechanism in the relay case cover.
•AR - 4
Hand and self reset contacts, can be supplied with 2 hand reset contacts and a maximum of 4 self reset contacts. All the contacts may be either normally open or normally closed.
•AR - 6
Electrical reset contacts with optional self-reset flag.
•AR – 3 & 6
Reset coils are short time rated, we recommend that reset circuits include a normally open (cut-off) contact.