Step and Touch Voltage Tests

At critical locations, such as fences or other metallic parts, hazardous step and touch voltages can occur. It is, therefore, crucial to measure step and touch voltage at locations in and around the substation in order to ensure safety for persons and animals.

Currents simulating fault conditions are in the same way injected as with the ground impedance measurement via a frequency variable current source into a ground point at a distant location.

Measured voltages are referenced against worst-case fault- and protection reaction scenarios to determine if the grounding system complies with national regulation.

Benefits of this solution

Personnel safety

Step and touch voltage tests are a very important factor when it comes to ensuring human safety within the substation and surrounding areas, especially during an electrical fault.

Smart and powerful

With the CPC 100 + CP CU1 you can generate the test current at non-network frequency to avoid measurement errors and inject it into a power line for measuring true step and touch voltage values.

Noise suppression

By using the frequency selective HGT1 voltmeter, the step and touch voltages can be measured at the same frequencies as the injected test current. This allows effective noise suppression for a highly accurate measurement.

Fully Automated Testing

PTM for HGT1 features fully automated testing for step and touch voltages and makes use of GPS for tracking test points and real time assessments according to relevant standards.

COMPANO 100 + HGT1

COMPANO 100 enables you to easily generate the test current at non-network frequency to avoid measurement errors. This makes step and touch voltage testing results particularly accurate.

Combined with the handheld and frequency-selective HGT1 voltmeter, you can measure the step and touch voltages at the same frequencies as the injected test current and easily access different measurement locations.

COMPANO 100

Primary injection, secondary injection and basic protection test set

HGT1

Handheld grounding tester

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PTM + PTMate

The well-structured Primary Test Manager™ (PTM) database enables you to define and manage locations, assets, jobs and reports in an easy and fast way.

PTMate is your mobile companion for PTM. The app supports you on site and extends the PTM feature set to your smartphone.