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Continuity tester of ground down lead

Continuity tester of ground down lead

Type: ZC-410B
ZC-410B grounding down lead continuity tester is a portable tester with high automation, which is specially used for the electrical integrity test of grounding device, and its technical indicators meet or exceed the requirements of relevant standards. The instrument is simple and convenient in operation, high in accuracy, fast in test speed, good in retest and intuitive in reading. It is an ideal special instrument that meets the requirements of the regulations, greatly facilitates the development of test items and improves work efficiency.
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Product Features
1. Power supply technology: using the latest power supply technology, output 10A current, can work continuously for a long time, overcome the disadvantage of instantaneous current of pulse power supply, can effectively break through the contact oxide film, and get good test results;
2. Strong anti-interference ability: under the condition of serious interference, the last data of LCD can be stable in the range of + 1 word, with stable reading and good repeatability;
3. Long service life: all high-precision resistors are used to effectively eliminate the impact of ambient temperature on the measurement results. At the same time, the use of military connectors enhances the anti vibration performance:
4. Simple operation: just press the measurement key to get the measurement result. The measurement results are displayed with LCD backlight, and the readout is intuitive and repeatable
5. Easy to carry: portable design, small size, light weight. The panel and the case form a body structure, with good seismic resistance.
Parameter

Model

ZC-410B

Test purpose

Measurement of the continuity of the link between the electric equipment and the Emperor

Resistance measurement

Range

1~ 1999mΩ

Resolution ratio

1mΩ

Accuracy

±(0.5%+2d)

Other indicators

Test Current

DC1A,2A,5A,10A Four fixed current gears

Measuring radius

50m

Display mode

Three and a half LCD display

Operation mode

Continuously

Working power

Voltage

AC220V±10%

Frequency

50Hz±5Hz

Environment Condition

temperature

-10℃~+40℃

humidity

≤80%RH

physical characteristics

Size

300x 270x 200mm3

Weight

≈5KG (Without Accessory)

guide
The electrical integrity of the grounding means, in the grounding device, the electrical connection between various electrical equipment, parts of the grounding device and equipment shall be grounded, such as DC resistance value, also known as electrical continuity. The reliable and effective connection between the grounding down lead and the grounding grid of the power equipment is the fundamental guarantee for the safe operation of the equipment. The grounding down lead is the connection part of the power equipment and the grounding grid. During the long-term operation of the power equipment, the connection may be affected by the damp and other factors, such as node corrosion, or even fracture, As a result, the resistance of the connection point between the grounding down lead and the main grounding grid increases, which cannot meet the requirements of the power regulations, so that the equipment has unsafe potential in operation, which will cause the equipment to lose ground operation in serious cases. The underground grounding electrode and its connecting part of the grounding device may also be rusted or even broken. Therefore, it is necessary to test the electrical integrity of grounding device regularly. The electric power industry standard DL / t475-2006 "guide for measuring characteristic parameters of grounding device" stipulates that the electrical continuity shall be measured by special instruments with resolution of 1mΩ and accuracy no less than 1.0. The zc-410B grounding down lead on tester developed by our company according to this standard is a portable tester with high degree of automation, which is specially used for the electrical integrity test of grounding device, and its technical indexes meet or exceed the requirements of relevant standards. The instrument is simple and convenient in operation, high in accuracy, fast in test speed, good in retest and intuitive in reading. It is an ideal special instrument that meets the requirements of the regulations, greatly facilitates the development of test items and improves work efficiency. ZC-410B grounding down lead continuity tester is applicable to the measurement of the on resistance between the grounding down lead of power equipment and the grounding grid (or adjacent equipment), and also applicable to the measurement of low resistance.
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