Design and Implementation of Overcurrent Protection Relay

2020 ◽  
Vol 15 (4) ◽  
pp. 1595-1605
Author(s):  
Mohammed Y. Suliman ◽  
Mohammed Ghazal
Author(s):  
Kukuh Widarsono

Damage to the electrical components will inevitably occur, it could be caused by several factors that influence it starting from inside and outside the system. 3 phase induction motor is the most commonly used in the industry, but often also has problems such as over current and over heat on the motor. The disturbance if left unchecked can cause fatal damage to the motor. therefore, a relay safety system has been made which utilizes a microcontroller controller to protect the 3 phase induction motors. This safety relay is designed differently than conventional safety relays used by industry in general, this safety relay is designed based on the microcontroller control and is accompanied by setting and resset facilities respectively to display on the LCD via Push Botton buttons. As such, 3 phase induction motors are protected from severe damage caused by interference with the mesh source. It is expected that by making this safety relay can reduce the value of damage to the 3 phase induction motor.


2020 ◽  
Vol 124 (1281) ◽  
pp. 1789-1797
Author(s):  
M. Bekhti ◽  
M. Bensaada ◽  
M. Beldjehem

ABSTRACTOne of the most critical aspects of a small satellite is the electrical power system (EPS) since the electrical power is necessary for the satellite to operate correctly during its predefined lifetime. The electrical power system consists mainly of solar cells, batteries, voltage converters and protection circuits. The electrical power system is responsible of providing stable power to the rest of the satellite subsystems.In satellite electrical power systems, overcurrent protection is now becoming an important function handled by the power distribution module (PDM). This paper proposes a method to evaluate the suggested protection. With the proposed procedure we should be able to verify that every possible failure does not travel through the EPS and cause a fatal degradation of the electrical power system. This will allow a complete evaluation of functionality of the protection hardware.This paper discusses the design and implementation of the power distribution module (PDM) for the coming generation of small satellites for the Algerian Space Agency (ASAL). The design must provide a reliable protection for the subsystems from the overcurrent associated with a device failure.


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