The Omicron HGT1 is used to safely and accurately measure step and touch voltages in a substation earthing system.
When used with a suitabe 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.
- 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.
- Measuring step and touch voltages at multiple locations
- Substation Earthing System Testing
- Step and Touch Voltage Measurement
- Earth Potential Rise Measurement
|Standard Accessories||Accessory Case|
|Available Input Impedances||1kΩ, 2kΩ, 200kΩ (high Z)|
|Voltage levels||25V (1kΩ range), 50V (2kΩ range), 25V (200kΩ range)|
|Accuracy (15 Hz … 20 kHz)||+0.5 %; -1.0 %|
|Temperature||-10 °C (14 °F) … +50 °C (122 °F)|
|Humidity Range||5 % to 90 % RH, non-condensing|
|Dimensions||Approx. 192 (W) x 92 (H) x 42 x (D) mm (Excluding protrusions)|