What is the tester of tension?
The voltage tester is a device used to check the power flow through the perimeter, terminal or battery. Testers come in different models. They are useful to ensure that the device works properly. The voltage tester can also be used to check that it is safe to work on the perimeter.
The most basic use of the voltage tester is to determine whether the current flows through the circuit. Similarly, it can be used to ensure that no current flows before the electrician starts working on the circuit. The voltage tester can also determine whether the circuit is properly grounded and accepts the corresponding voltage. Testers of the voltage designed for the use of household should be accurate up to 500 volts. This type of voltage tester has three parts: a bulb, a few insulated wires and a few test probes connected to the ends. When the current flows from the probes to the wires, the light bulb is illuminated.
As an example, take a simple home task.If an electrician wants to try a two -phase socket to see if the power supply is lowered, he will ensure that the electricity is on. He then puts one probe into the left slot of the ascent and puts the other probe into the right slot. If the light is on, the voltage tester is illuminated and the output works.
To perform the same task, other types of voltage testers can be used. The plug tester looks like a small box with several lights on the front and a plug on the back. To test the socket, one can connect the tester to the output. The lights on the front of the box are illuminated in a pattern that shows what, if something is bad with the outlet.
tester without contact looks like a rectangular pen. If you want to use it, the house owner can touch the pointed end against the light socket. The tester will EITHER will light up or beep or both if the current is present. This is the simplest type of tester to be used, but it tends to be slightly more expensive than other models. Is also at leastě přesný, protože elektrický proud v blízkých drátech nebo obvodech může způsobit falešně pozitivní čtení.