what is Holding Contact of Contactor, Contactor Holding Circuit क्या है, NO NC of Stater.
In this video I will show you what is Holding Contact of Contactor, Contactor Holding Circuit क्या है, NO NC of Stater. ↓ Photos ↓
Electrical
Constructional Parts and Working of Auto-Transformer
Construction of Autotransformer AutoTransformer Main parts of Auto transformer 1. Core 2. Winding 3. Wheel (Handle) 4. Brush 5. Outer 6. Terminal box. Core : Core is made of best quality silicon steel stampings assembled to form circular (cylindrical shape). Winding : Super enamelled copper wire of high grade copper … Read more
Measures to Overcome the Effect of Mechanical Forces on Transformer
Mechanical Forces on Transformer To overcome the problems of mechanical forces, circular coils should be used for the windings, as they can with stand the radial forces (in circular coils radial forces are cancelled by each other). Wherever it is not possible to use the circular coils, (e.g. shell type transformer) they should be braced … Read more
Difference between Power Transformer and Distribution Transformer
Comparison of Power Transformer and Distribution Transformer Q. Compare power transformer with distribution transformer Sr. No. Power Transformer Distribution Transformer 1 The rating of power transformer is very high (in MV As). The rating is in KVA and small. 2 This are used at generating stations is very high voltage transmission line and at receiving … Read more
Lightening Impulse Test of Transformers
Lightening impulse test : (This is a type test) Q. Describe the impulse voltage withstand test on transformers. In practice the transformer is subjected to lightening strokes and switching surges. In such case ordinary high voltage tests are not useful. The test voltage wave is generated by a special type of generator known as impulse … Read more
Induced Over Voltage Withstand Test of Transformer
Induced over-voltage withstand test This test is routine test i.e. it is carried on all the transformers. Before commissioning the transformer it is necessary to know that the insulation resistance of a transformer is greater than a specified value, to avoid excessive leakage currents. Megger test for insulation are carried out between windings, between winding … Read more
MCB breaker VS Fuse, Difference between Fuse and MCB in Details
FUSE In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current. It is a sacrificial device; once a fuse … Read more
Separate Source Voltage Withstand Test of Transformer
Separate source voltage withstand test of Transformer (Power frequency) Q. Explain with neat sketch power frequency high voltage test on transformer. Before commissioning the transformer it is necessary to know that the insulation resistance of a transformer is greater than a specified value, to avoid excessive leakage currents. Megger test for insulation are carried out … Read more
Impulse Test of Transformer, Measurement of Insulation Resistance of Transformer
Impulse Test of Transformer Q. State how insulation resistance of a transformer is measured. Measurement of Insulation Resistance of Transformer Before commissioning the transformer it is necessary to know that the insulation resistance of a transformer is greater than a specified value, to avoid excessive leakage currents. Megger test for insulation are carried out between … Read more
Working of Inverter, House Inverter का Wiring Connection कैसे करना है, Wiring of Inverter
Working of Inverter Inverters convert DC Power into AC Power. An inverter is used to produce an un-interrupted 220V AC or 110V AC (depending on the line voltage of the particular country) supply to the device connected as the load at the output socket. The inverter gives constant AC voltage at its output socket when … Read more