ALSTOM MVAJ1L1GB0771B Auxiliary Transmission Relay

Bus protection: In schemes such as bus differential protection, this relay is used to drive circuit breakers related to faulty bus segments to trip. The busbar is an important part of the power system for collecting and distributing electrical energy. Once the busbar fails, the consequences can be unimaginable. The MVAJ1L1GB0771B relay can quickly respond to bus faults by driving the corresponding circuit breaker to trip and isolate the faulty bus section, ensuring the stable operation of the entire power system.

Motor protection: In the protection circuit of large motors, the relay receives the tripping signal of the protection relay, drives the motor circuit breaker to trip, and protects the motor. When the motor experiences faults such as overload, stalling, and phase loss operation, the relay can detect abnormal signals in a timely manner and quickly perform tripping operations to protect the motor from damage and extend its service life.

Product advantages

Extremely low burden: The design goal is to minimize the current demand on the drive circuit, thereby reducing the burden on the output contacts of the front-end protection relay, extending its service life, and improving the reliability of the system. In the power system, the output contacts of the front-end protection relay need to operate frequently, which imposes a heavy burden. The low load characteristic of MVAJ1L1GB0771B relay effectively reduces the wear on these contacts and lowers the probability of faults occurring.

High reliability: Using high-quality components and mature designs, ensuring reliable operation under various operating conditions, executing trip instructions, and ensuring the safety of the power system. As a well-known enterprise in the industry, ALSTOM strictly controls the quality of its product manufacturing process, selects high-quality components, and has undergone extensive experiments and practical operation verification, making the relay highly reliable and capable of stable operation in complex and harsh power environments.

Quick response: With extremely fast action speed, it can quickly drive the circuit breaker to trip upon receiving a trip signal, minimizing the duration of the fault. Every second, even every millisecond, is crucial when a power system failure occurs. The fast response characteristic of this relay can timely cut off the fault current, reduce the degree of equipment damage, and minimize the impact on the stability of the power system.

Multi contact output: Provides multiple sets of normally open or normally closed contacts, which can simultaneously drive multiple circuit breaker trip coils or be used for signal indication, improving the flexibility of the system. In some complex power systems, it may be necessary to simultaneously control multiple devices or emit multiple signals. The multi contact output function of MVAJ1L1GB0771B relay can meet the diverse control requirements, making the design and operation of power systems more flexible and efficient.

Strong anti-interference ability: It has good anti-interference ability and can work stably and reliably in complex power system environments. There are various sources of electromagnetic interference in the power system, such as the starting of large motors and frequent switching of switches. This relay effectively resists electromagnetic interference through special design and technology, ensuring its normal operation and avoiding misoperation caused by interference.

Multiple rated voltage options: Provides multiple DC rated voltage specifications to meet the needs of different power systems. Different power systems may use different voltage levels, and the multi rated voltage design of this relay enables it to be widely used in various power systems without the need for complex voltage conversion, reducing system costs and complexity.