Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Circuit Breaker Operation TestClose Operation Test – Local/RemoteThis test is conducted manually, locally, and remotely. In the manual operation test, the spring is charged manually, and the breaker is closed and opened manually as well. For local operation, control power and AC supply are provided to the spring charging motor, and the circuit breaker is closed using the TNC switch. The function of the closing coil and the operation of the spring charging motor are observed. If remote

Vacuum Condition Monitoring in Vacuum InterruptersVacuum interrupters (VIs) serve as the primary circuit interruption medium for medium voltage power systems and are increasingly utilized in low, medium, and high-voltage systems. The performance of VIs hinges on maintaining an internal pressure below 10 hPa (where 1 hPa equals 100 Pa or 0.75 torr). Prior to leaving the factory, VIs are tested to ensure their internal pressure is ≤10^-3 hPa.The performance of a VI correlates with its vacuu

What is Testing of Induction Motor?Induction Motor DefinitionAn induction motor is defined as a type of electric motor that operates on the principle of electromagnetic induction.Basic Parameters Current Voltage Power ResistancePreliminary Tests Firstly check the components of motor No-load running current test High potential test Air-gap measurement Balancing of current Temperature rise in bearing Voltages in shaft Direction of rotation Level of noise Strength of vibration Air gap eccentricity

Winding Resistance Test DefinitionThe winding resistance test of a transformer checks the health of transformer windings and connections by measuring resistance.Purpose of Winding Resistance TestThis test helps in calculating I2R losses, winding temperature, and identifying potential damage or abnormalities.Measurement MethodsFor star connected winding, the resistance shall be measured between the line and neutral terminal.For star connected autotransformers the resistance of the HV side is meas

What is Transformer Testing ?Transformer test definitionTransformer testing involves various procedures to confirm the specifications and performance of the transformer before and after installation.Transformer test type Type test Routine inspection Special testTransformer type testIn order to prove that the transformer meets the customer's specifications and design expectations, the transformer must undergo different test procedures at the manufacturer's site. Some transformer tests are perform