ALSTOM Prima PRE11N04BH - Auxiliary Relay For Substation

ALSTOM Prima PRE11N04BH is an auxiliary relay in substation, whose main function is to control and monitor the auxiliary circuit in substation. According to the information I searched, we can explain the characteristics and applications of this relay in detail from the following aspects:

Basic functions of auxiliary relay

The main function of the auxiliary relay is to control and monitor the system and ensure the electrical isolation between the auxiliary circuit and the control circuit. They usually have large switching capacity, but low power consumption, and are suitable for occasions with high safety requirements, such as substations.

design feature

The auxiliary relay is compact in design, saves installation space, and adopts prefabricated connectors, which makes debugging easier. In addition, they usually do not need to make intermediate switching through cantilever, but drive all contacts synchronously through axial armature relay, thus simplifying operation and improving reliability.

Application scenario

In substations, auxiliary relays are often used to protect and control main equipment. For example, in the non-redundant protection system, the auxiliary relay is used in conjunction with the protection relay and the tripping coil of the circuit breaker to ensure that the circuit can be disconnected in time when a fault is detected, thus protecting the system safety. In addition, the auxiliary relay may also be used in the monitoring system of intelligent substation to realize real-time monitoring of environmental parameters such as temperature and humidity, smoke sensation and wind speed.

Difference from other relays

Auxiliary relay is different from variable speed relay in industrial automation. For example, ALSTOM MVAJ23T1GB0774B is an auxiliary variable speed relay for variable speed control, which is mainly used to accurately control the motor speed. The auxiliary relay is more focused on the auxiliary circuit control and protection function of substation.

Technical standards and specifications

According to the standard of seismic test method for relays in power system of nuclear facilities, the seismic test method for auxiliary relays is suitable for industrial facilities such as substations. This shows that the auxiliary relay needs to meet certain technical specifications and standards in design and use to ensure its reliability and safety in complex environment.

Synergy with other equipment

Auxiliary relays usually work together with other devices, such as tripping relays and protective relays. In the intelligent substation, the auxiliary contact of the tripping relay can act correctly and send out the position signal, thus reflecting the running state of the switch.

ALSTOM Prima PRE11N04BH is an auxiliary relay specially designed for substations. Its functions include controlling and monitoring auxiliary circuits, providing electrical isolation and cooperating with other equipment. This relay plays an important role in the safe operation and intelligent management of substation.