How to select Auxiliary Relays for isolation applications
In an electrical system, both in tripping and operation circuits with demanding requirements, the use of an auxiliary relay is necessary as a guarantee of durability and reliability in the maneuver. Furthermore, we avoid damaging the ieds own contacts, which, in many applications, do not have enough capability to perform a safe and guaranteed long lasting operation.
It must be ensured that any type of signal emitted from the protection, control, supervision, communication and measurement devices up to break element or protection devices of the corresponding system, and furthermore this signal be executed, otherwise an alarm signal or information be emitted to the corresponding management device. The information and status of this execution must also be registered through its corresponding.