A multifunctional tool has recently experienced a surge in popularity in different segments. Users praised the benefits of the concept, noting the versatility and ergonomics of such models. But far from always, manufacturers managed to achieve the proper level of the direct working qualities of such an instrument in the performance of specific functions. Only certain segments were deprived of this drawback, in one of which an indicator screwdriver is presented. How to use this tool? To do this, you need to know the intricacies of determining the phase and zero using an indicating device. Professional electricians are familiar with such operations, but this process can cause a lot of problems for home masters, not to mention the risk of making a mistake.
How does an indicator screwdriver work?
Conventional devices of this type are voltage testers. Each screwdriver has a resistor that connects to a metal rod that acts as a conductor. Professionals usually use a special set of screwdrivers with different characteristics that are focused on electrical work. They differ both in mechanical qualities and in the ways of providing information on the parameters of the circuit under study.
In the simplest models, the presence of the same voltage in the line will be indicated by an LED bulb integrated into the housing. Contact models assume that the user will touch a special plate on the handle, thus closing the chain. If the indicator lamp lights up, then the phase is detected. In the case of a reverse reaction, we can state that zero was found. A contactless indicator screwdriver is also common. How to use such models? The technique for detecting breaks on the line in this case is similar to contact tools, only the user does not need to independently close the circuit.
Zero and phase determination
The most common task that users of this tool face. Typically, the difficulties of determining zero and phase arise in situations where the wires do not have the correct marking and the colors do not match the actual characteristics of the circuits. Before the indicator screwdriver determines the phase, it is necessary to turn off the electricity on the input shield. Then follows the functional surface of the tip of the screwdriver to touch one of the cores. The indicator will light up if the circuit is in phase. It is important to note that some models do not give a light signal, but work with a sound notification. Accordingly, the phase in this case will be recorded by an audio signal. If the screwdriver does not give out any reaction, then the core status is zero.
Also, do not forget about the need to touch the nickle, that is, the plate, due to which the circuit occurs at the moment of determining the polarity. This is important if a contact indicator screwdriver is used. How to use a contactless model? It has already been noted that it works on the same principle, but does not require the user to touch a special plate. But such screwdrivers are supplied with batteries, so before starting work, check the power supply.
How to find a current leak?
Another popular power grid problem that can be identified with an indicator screwdriver. First of all, the tool tip should be brought to one of the grounding antennae of the examined socket. If the indicator is activated, we can talk about the fact of a leak. But here it is necessary to take into account the initial voltage parameters. It is advisable to use a set of screwdrivers in which individual models are oriented to operation in different conditions of the circuit. If you need to check specific electrical appliances, a leak is detected by testing each device in turn. That is, the devices are connected to the outlet, and the light bulb also gives a reaction in the form of a light or sound alert.
How to detect a line break?
It should be noted right away that such screwdrivers are not able to show the exact place where the break occurred. However, the tool will help identify the problem area in which this place is located. To do this, you need to take the distribution scheme of the mains and check all sockets for power. But there is one nuance in working with lamps, which also allows you to check the indicator screwdriver. How to use the tool in this case? The cliff in such places is checked when the power is off, but with the light on. If the circuit on the switch is not closed, then the screwdriver LED will show a gap, but in fact it may not be.
General instruction manual
The testing tool requires special maintenance measures. Screwdrivers should be stored in a dry and dry place. If it is possible to perform a non-contact examination, it is better to carry out operations with gloves. Also, every time after a working session, clean the surface of the tool from debris and dust. For example, the STAYER MS-18 Indicator Screwdriver can detect microwave radiation and hidden wiring. The effectiveness of these tasks largely depends on the state of the hull and, in particular, its cleanliness.
Conclusion
Despite the expanded functionality, such models of screwdrivers are inexpensive. Even large manufacturers that produce quality products sell entry-level modifications at prices not exceeding 200 r. A professional indicator screwdriver, the price of which can be about 500-600 rubles, is also endowed with additional features. Such a tool, in addition to determining the phase and neutral, is able to work with electromagnetic radiation, fixing their boundaries. However, for the same price you can buy a set with screwdrivers, each of which will perform these functions in a separate order and with greater efficiency.