Multifunctional tool has recently experienced a surge in popularity in different segments. Users highly appreciated the advantages of the concept, noting the versatility and ergonomics of such models. But far from always, manufacturers were able to achieve the proper level of directly working qualities of such a tool when performing specific functions. Only separate segments were deprived of this shortcoming, in one of which an indicator screwdriver is presented. How to use this tool? To do this, you need to know the subtleties of determining the phase and zero using an indicating device. Professional electricians are familiar with such operations, but for home craftsmen, this process can cause a lot of problems, not to mention the risk of making a mistake.
How does an indicator screwdriver work?
Traditional devices of this type are voltage testers. Each screwdriver contains a resistor that is connected 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 are different andmechanical properties, and ways to provide information about 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 light bulb integrated into the case. Contact models assume that the user will touch a special plate on the handle, thus completing the circuit. If the indicator lamp lights up, then the phase is detected. In the case of a reverse reaction, it can be stated that zero has been found. A non-contact indicator screwdriver is also common. How to use such models? The technique for detecting line breaks in this case is similar to contact tools, only the user does not have to close the circuit himself.
Determination of zero and phase
The most common problem faced by users of this tool. Usually, the difficulties of determining zero and phase arise in situations where the wires do not have the correct markings and the colors do not correspond to the actual characteristics of the circuits. Before you can determine the phase with an indicator screwdriver, you must turn off the power at the input shield. Next, the functional surface of the tip of the screwdriver should touch one of the cores. The indicator will light up if the loop is in phase. It is important to note that some models do not give a light signal, but work with a sound alert. Accordingly, the phase in this case will be recorded by an audio signal. If the screwdriver does not give any reaction, then the status of the core is zero.
Also, do not forget about the need to touch the penny, that is, the plate, due to which the circuit occurs at the moment the polarity is determined. This is important if a contact indicator screwdriver is used. How to use the 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 you should check the power supply before starting work.
How to find the leakage current?
Another popular electrical problem that can be identified with an indicator screwdriver. First of all, you should bring the tip of the tool 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 chain operating conditions. If you need to check specific electrical appliances, then the leak is detected when 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 broken line?
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 determine the problem area in which this place is located. To do this, you need to take the power distribution scheme and check all sockets foravailability of food. 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? A break in such places is checked with the power turned off, but with the lights on. If the circuit on the switch is not closed, then the screwdriver LED will show an open, but in fact it may not be.
General Operating Instructions
The test tool requires special maintenance. Screwdrivers must be stored in a dry and moisture-proof place. If it is possible to perform a non-contact examination, then it is better to perform operations with gloves. You should also clean the surface of the tool from debris and dust every time after a working session. For example, the MS-18 indicator screwdriver from STAYER allows you to determine microwave radiation and hidden wiring. The effectiveness of these tasks depends largely on the condition of the hull and, in particular, its cleanliness.
Conclusion
Despite the enhanced functionality, these screwdriver models are inexpensive. Even large manufacturers that produce quality products sell entry-level modifications at prices of no more than 200 rubles. 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 themborders. However, for the same price, you can also purchase a set with screwdrivers, each of which will perform these functions in a separate order and with greater efficiency.
