Omicron HGT1 Handheld Grounding Tester

Safely and accurately measure step and touch voltages in a substation earthing system

The Omicron HGT1 is used to safely and accurately measure step and touch voltages in a substation earthing system. When used with a suitable test injection system (for example by using the Omicron CPC 100 and CP CU1) a variable frequency test current is used to simulate a ground fault and the step and touch voltages present can be measured and calculated. The HGT1 uses digital filtering to ensure effective noise suppression and provide more accurate measurements. A logging function allows many measurements to be taken and stored internally, for later download to a computer for reporting and analysis.

Key Features

• Mobile, battery operated handheld device – simplifies measurements at various locations inside and outside the substation
• Simulates body and shoe resistance (as defined in relevant standards)
• Frequency-selective measurements
• Digital filtering makes noise suppression more effective and measurements more accurate

Applications

• Measuring step and touch voltages at multiple locations
• Substation earthing system testing
• Step and touch voltage measurement
• Earth potential rise measurement

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