Shijiazhuang Jinzhou Jihang Electric Power Technology Co

The low-voltage electroscope is used to test low-voltage electrical equipment with a ground voltage of at or below. It is also a commonly used electrician's safety tool in the home. It is mainly composed of working contacts, voltage-reducing resistors, neon bulbs, springs and other components. This kind of electroscope works by using current to form a loop through the electroscope, the human body, and the earth. The leakage current makes the neon bulb glow and glow. As long as the potential difference between the charged body and the earth exceeds a certain value (the following value), the electroscope will emit a glow. If it is below a certain value, it will not emit light, thereby judging whether the low-voltage electrical equipment has voltage. Before use, you should first check Check the integrity of the electric test pen, whether the four major components are missing, and whether the neon bulb is damaged, and then verify it in a place with electricity. Only after confirming that the electric test pen is intact can the electric test be carried out. When using it, be sure to hold the cap of the pen The metal hook at the end or the screw at the tail, the metal probe of the pen tip contacts the live equipment, do not test electricity with wet hands, and do not touch the metal probe of the pen tip with your hands. In addition to being mainly used to check low-voltage electrical equipment and circuits, the low-voltage test pen can also distinguish phase lines and the neutral line, alternating current and direct current and the level of voltage. Usually the glowing neon bulb is the live wire, and the non-lighting neon bulb is the neutral wire. However, when the neutral point is displaced, you should pay attention. At this time, the neutral line will also make the neon bulb glow. For alternating current, When the neon bulb passes through, both poles of the neon bulb will light up. When direct current passes through, only one electrode will light up. When used to judge the voltage, the neon bulb will be dark red and slightly bright. When the voltage is low, the neon bulb will glow yellow-red. When the brightness is high, the voltage High.
High-voltage electroscope High-voltage electroscope is mainly used to test high-voltage electrical equipment with a ground voltage above the equipment. At present, three types are widely used: luminous type, acousto-optic high-voltage electroscope type, and windmill type. High-voltage An electroscope is generally composed of three parts: the detection part (indicator part or windmill), the insulation part, and the handshake part. The insulation part refers to the part starting from the metal connecting screw at the bottom of the indicator to the cover ring, and the handshake part refers to The part below the cover guard ring. The insulation part and handshake part have different lengths according to different voltage levels. When using a high-voltage electroscope for electrical testing, the operation monitoring system must first be carefully implemented, with one person operating and one person monitoring. The operator In front, with the guardian at the back. When using an electroscope, you must pay attention to its rated voltage to be consistent with the voltage level of the electrical equipment being tested, otherwise it may endanger the operator's personal safety or cause misjudgment. During the electroscope, the operator must Wear insulating gloves and boots to prevent damage to the human body caused by step voltage or contact voltage. The operator should hold the handshake part below the cover guard ring and conduct inspection on the electrical equipment first. During inspection, the operator should move slowly Get close to the live equipment until it glows or makes a sound to verify the integrity of the electroscope. Then test it on the equipment that needs to be tested. When testing multi-layer lines erected on the same pole, low voltage should be tested beforehand, and high voltage should be tested after. Check the lower level, then check the upper level
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