- Earth tester is an instrument which is used for measuring resistance of the earth. The power system equipment are connected to the earth through earth electrodes. The resistance of the earth is low and the fault current passes to the earth through an electrode. This protects the system from damage.
- The earth electrodes help to control the high potential of the equipment which is caused by voltage spikes or lightning surge. The neutral connection of the three phase circuit is also connected to earth electrodes for protection.
- The two main parts of an earth tester are rotational current reverser and rectifier. These two parts are mounted on the shaft of a DC generator. The earth tester only works on DC due to presence of the rectifier. An earth tester also consists of two pressure and current coils and each coil has two terminals.
Wide Range of Applications Driving Market Growth
- An earth tester enables the measurement of ground electrode resistance or soil resistance. It is necessary to ensure low resistance ground connection for the protection and performance of the electrical system. This prevents injury due to faulty connections.
- Increasing demand for earth testers is seen in industrial electrical equipment, oil & gas, and industrial applications. In addition, earth testers are used in street lighting, street cabinets, telephone pedestals, and cell towers.
- Other factors which propel the earth tester market include increasing urbanization and increasing electricity requirement in developing economies. However, unavailability of skilled workforce is expected to hamper the growth of the earth tester market.
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Maximum Growth to be observed in the Asia Pacific Market
- In terms of region, the global earth tester market can be divided into North America, Europe, Asia Pacific, South America, and Middle East & Africa.
- The earth tester market in Asia Pacific is anticipated to expand at the maximum CAGR during the forecast period.
- This growth is attributed to a wide range of applications, benefits of earth testers, and growing manufacturing industry in developing economies such as Japan, Taiwan, and China. Thus, these factors are expected to drive the demand for earth tester products.
- The earth tester market in North America and Europe is expected to show high growth rate due to increasing competition among players. The market in Middle East & Africa is also likely to show significant growth due to increasing demand for earth testers in the oil & gas industry.
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Key Players in the Global Market
The global earth tester market is highly concentrated due to the presence of limited number of manufacturers. Prominent players operating in the global market are focusing on product launch and technological developments to meet the growing demand.
Key players operating in the global earth tester market include:
- Fluke Corporation
- Waco Instruments
- Fortive
- Metrix Electronics
- Yokogawa Electric Corporation
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