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

Pure inductance circuit and pure resistance circuit are two basic circuit models, which respectively represent the ideal case of only inductance or only resistance components in the circuit. The following describes the two circuit models and their characteristics:Pure Resistor CircuitDefinitionA pure resistance circuit is a circuit that contains only resistance components (R) and no other types of components (such as inductors L or capacitors C). Resistance elements are used to represent the par

Lighting distribution system wiring diagram powered by an external lineEmergency lighting is cross-powered by two main lines

Lighting distribution system wiring diagram with two transformer and two trunk

Lighting distribution system wiring diagram with one transformer and one trunk

Lighting distribution system wiring diagram with two transformer

Lighting distribution system wiring diagram with two transformer

Lighting distribution system wiring diagram with one transformer and battery

The purpose of using capacitors to reduce reactive current (also known as magnetizing current) is mainly to increase the Power Factor (PF) of the power system. The power factor is a measure of the ratio of the actual energy used in an electrical system (active power) to the total apparent power (active power plus reactive power). Increasing the power factor helps to improve the efficiency and reliability of the power system. The following is a detailed explanation of the specific purpose of usin

Common lighting distribution system wiring diagram with one transformer and one spare power cable

In fact, most refrigerators have overload protection devices, which may be fuses, circuit breakers or circuit protection elements with similar functions, but some refrigerators do not appear to have independent visible fuses or circuit breakers, mainly for the following reasons:Built-in protection elementIntegration with compressorThe main power-consuming part of the refrigerator is the compressor, and many refrigerators integrate protection elements into the compressor's starting and running ci