Earth Bond Tester - Earth Bond Testing Equipment Kikusui earth bond testers and earth bond testing equipment available in the UK from electrical safety testing specialist telonic instruments. Contact us at Telonic

Earth Bond Tester - Earth Bond Testing Equipment

Earth Bond Testing verifies the integrity (continuity) of the protective bonding of the equipment (Class I equipment) designed to secure safety through the basic insulation and protective earthing. It is also called earth (ground) bonding test.

With Earth Bond Testing, a current in the range of 10 A to 60 A is applied for 60 seconds to few minutes. The resistance is measured by measuring the voltage. The test current is determined by the rating of the distribution system (such as 1.5 or 2 times the distribution system). Many standards define the resistance limit to less than or equal to 0.1 Ohm (some standards define the limit by the voltage drop) and the open-circuit voltage (no-load voltage) to less than or equal to 6 V or 12 V.

If the continuity of the protective bonding is confirmed, we can conclude that the equipment has the requirements for preventing electric shock even if the insulation between the primary circuit and the accessible conductive section fails and a fault current flows through the distribution system.

Earth Bond Testing diagram


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TOS6200

[30A] Earth Bond Testing TOS6200A [30A] Earth Bond Testing Instrument
  • Test current value: 3 to 30 A AC / Resistance value: 0.001 to 1.200 Ohm
  • Stores 100 test conditions in memory
  • Incorporates test conditions into program
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TOS6210

[60A] Earth Bond Testing Supporting UL60950-1 TOS6210 [60A] Earth Bond Testing Instrument Supporting UL60950-1
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