The resistance tester is mainly used to measure the conductivity of the object, so we can see the product's figure in the electrical safety inspection and grounding project completion inspection and other occasions. In addition to this, we can also find on the market resistance tester does not simply refer to a product, which often contains a variety of classifications, such as grounding resistance tester, insulation resistance tester, grounding resistance tester, etc., different products in the details of the design, corresponding to the scene as well as suitable for the crowd there will be some differences.
A resistance tester price
1, Huayi Guodian HYZRZ?-10A handheld resistance tester
Company Name: Wuhan Huayi Guodian Power Equipment Co. ￥ 7000
2, Bofei electronic BNY-A? frequency resistance tester
Company Name: Henan Bofei Electronic Technology Co. ￥ 8000
3, Shanghai Shuangte QJ36-2 resistance tester
Company Name: Shanghai Shuangte Electric Instrument Co. ￥ 18500
Two, grounding resistance tester
Grounding resistance tester is to abandon the traditional manual hand-cranked power generation mode of operation, the use of advanced large-scale integrated circuits, the application of DC/AC conversion technology will be the three-terminal knob, four-terminal knob measurement mode combined into a model of the new digital grounding resistance tester. Applicable to electric power, post and telecommunications, railroads, communications, mines and other departments to measure the grounding resistance of various devices and measure the resistance of low resistance conductor resistance value; this table can also measure the soil resistivity and ground voltage
Three, insulation resistance tester
Insulation resistance tester is also known as megohmmeter (megger), commonly known as shaking table, megohmmeter, megohmmeter, megohmmeter, megohmmeter, megohmmeter, megohmmeter. Most of the hand-cranked generator power supply, it is also known as shaking table. Its scale is in megohms (MΩ) for the unit. It is a measurement instrument commonly used by electricians, mainly used to check the insulation resistance of electrical equipment, household appliances or electrical lines to ground and phase to phase, in order to ensure that these equipment, electrical appliances and lines work in a normal state, to avoid electrocution casualties and equipment damage and other accidents.
Four, hand-cranked grounding resistance shaking table of the use of:
1, remove the grounding trunk and grounding body of the connection point, or remove the grounding trunk on all grounding branch line connection point.
2, two grounding rods were inserted into the ground 400mm deep, one 40m away from the grounding body, the other 20m away from the grounding body.
3, put the shaking table in the grounding body near the flat place, and then wiring.
4, according to the grounding resistance requirements of the grounding body to be measured, adjust the coarse adjustment knob (on the three adjustable range.
5, to about 120 rpm speed evenly shaking shake the table. When the needle deflection, then adjust the fine-tuning dial until the needle is centered. Micro-adjustment dial adjusted reading, to multiply the coarse adjustment positioning times, that is, the grounding resistance of the grounding body is measured. For example, micro-adjustment reading of 0.6, coarse adjustment of the resistance positioning times is 10, the measured grounding resistance is 6Ω.
6, in order to ensure that the measured grounding resistance value is reliable, should change the orientation of the retest. Take the average of several measured values as the grounding resistance of the grounding body.
Considering the market resistance tester type style, price design variety, so consumers should be from a practical point of view, focus on the analysis and screening, to avoid buying an inappropriate a resistance tester. In addition to the professional principle of the resistance tester information is also of reference value. So the above editorial given is the resistance tester classification, use, price examples and so on a few plates of knowledge, interested friends may be able to find a suitable product for their own.
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