A new terminology for electrical currents now include all faults those between live conductors as well as earth or grounding faults. If we not design our circuit protection properly followed standard guide,it can cause serious injury or death for human and equipment damage. Fault current be determined at every relevant point. For small and medium [...]
For electrical power distribution,substation is the one important component to serve,distributing and regulated an electricity to building,factory or private living area. Normally substations have the several required equipment such as power transformers and the voltage-regulating device for converting the high incoming sub-transmission voltages to low voltage primary system and ensure it in specified voltage tolerances. [...]
For circuit breakers specification MUST suitable with installation condition and needed.Main switchboard is the main power supply distribution for factory or building.This unit is a key for entire electrical power supply distribution. Circuit breaker feed the high volume of voltage for all equipment and machine.It also have a high value of short circuit current due [...]
Low circuit breaker normally operating at 600 volt AC and below.The common used types of circuit breaker around the world such as molded case circuit breaker (MCCB) and Air circuit breaker ( ACB ). This low voltage circuit breaker usually used for power distribution and sub power distribution at factory and general industry.It a combination [...]
Overload relay is the one of important device for motor control.It can prevent our motor from overheat or winding burning due overload of ampere. We need to setting the value of overload relay properly depend on our application and motor full load ampere.If we setting low from FLA,it can cause motor trip c0ntinues and process [...]
A motor overload relay is an electro-mechanical relay that is operated by heat developed in the relay.When the level of current in a circuit reaches a preset value, the increased temperature opens a set of contacts. Overload relay should install in our motor starter application for extra protection.Overload relay can avoid serious damage for electric [...]
Overload protection is installed in the main control circuit or power line of motor to protect from damage due to mechanical malfunction overload conditions when it is running. The effect of an overload is an excessive rise in temperature in the motor windings due to current higher than full load current. Properly sized overload protection [...]
