The most common situation among the electrical risks is electric shock. The electrical current used in homes and workplaces is alternating current. Wetness and moisture conduct the electrical current well. For example, the board is not normally conductive, but if it is wet and damp, the board can also be a good conductor.
According to the statistics, the causes of electrical accidents are as follows:
- 26 percent of accidents caused by electrical leakage in machinery
- Accidents due to insulation errors 23 percent
- 20 percent of accidents caused by touching power transmission lines
- Percentage of accidents on or around power pylons 12
- 8 percent of accidents caused by short circuits in electrical circuits
- 6 percent of accidents caused by work performed near electric current
- 6 percent of accidents caused by explosion
The conduction path grounded through the body during electric shock shows different results according to the voltage value. At low voltage values, the transmission through the body occurs through the circulatory system, ie through the heart. Therefore, low tensions cause death even in humans. At high voltage values, the electric field strength is higher in the body and many organs become conductive besides the circulatory system. Briefly, while the human body exposed to low voltage generally experiences a shock, severe burns occur in the human body exposed to high tension.
As in the civil sector, there are many electrical devices and equipment used for military purposes. The fact that they are military does not make any difference in terms of working systems and the electricity source. The purposes and areas of use may differ. And it is possible to face low voltage risks at any time.
In this respect, the guidelines issued by the Ministry of Science, Industry and Technology (2014 / 35 / EU) on Electrical Equipment Designed for Specific Voltage Limits include military devices and LVD low voltage tests by the manufacturer. A few standards considered during these tests are:
- TS 4518 Military electrical and electronic equipment components and their test methods - Direct current resistance test method
- TS 4770 Military electrical and electronic equipment components and their test methods - Test method for measuring insulation resistance