06

2022

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01

Do you know this common knowledge about generators?

Author:

What is "power factor"? Power factor, measured on a scale of 0 to 1, is the ratio of real power to apparent power supplied to a circuit. It indicates how much energy is lost due to electromagnetic fields. What are "kVA" and "kW"? kVA stands for kilovolt-amperes. It measures apparent power, showing the total output of the generator before electromagnetic field losses. kW measures kilowatts and tells you the generator's true output. You can determine the kW rating by multiplying the power factor by the kVA. What is the difference between a circuit breaker and an RCD? A circuit breaker trips when the current rises above a set value. An RCD compares the active current

　　What is "power factor"?
　　Power factor is measured with a value from 0 to 1, representing the ratio of real power to apparent power supplied to a circuit. It indicates how much energy you lose due to electromagnetic fields.
　　What are "kVA" and "kW"?
　　kVA stands for kilovolt-amperes. It measures apparent power, showing the total output of the generator after electromagnetic field losses. kW measures kilowatts and tells you the generator's true output. You can determine the kW rating by multiplying the power factor by kVA.
　　What is the difference between a circuit breaker and an RCD?
　　A circuit breaker trips when the current rises above a set value. An RCD compares the live current and the neutral current, tripping if there is an imbalance.
　　What does ATS mean?
　　ATS, or automatic transfer switch, senses the main power supply and power quality. If the main power fails or drops below a set value, the ATS signals the generator to energize. The ATS can also start the generator if one or more phases are lost in a three-phase system. When the power is restored, the ATS signals the generator to shut down.
　　Do I need a single-phase or three-phase generator?
　　If you have a single-phase power supply, stick with a single-phase generator. Problems arise if one phase of a three-phase generator is overloaded. Three-phase generators are only for three-phase systems. If you are in industries such as business, factory, shopping mall, hospital, school, construction site, real estate, etc., please stick to three-phase diesel generators.
　　Can a 6kVA generator power a 6kW motor?
　　No, it cannot, because the motor requires extra current to get the motor started from a standstill. This is called inrush current and may require 4-10 times the rated current.
　　What is a failsafe solenoid valve?
　　A failsafe solenoid valve shuts off the fuel supply to the generator engine if the engine's battery power drops below a preset safety level. This means the generator will shut down safely even after all power is lost.

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