ESG NT2
Ground fault locator
Ground fault locator
Key Benefits
- Always get accurate results with automatic calibration
- Easy to understand results
- Locate cable faults in the LV network without supply interruption
- Featuring automatic zero calibration and integrated noise suppression, the ESG NT2 continuously maintains an accurate display. It automatically detects and eliminates interference from DC offsets, railway currents, industrial environments, and cathodic protection systems, eliminating the need for manual adjustments.
Description
The ESG NT2 is the ideal tool for cable sheath fault location and ground fault location, allowing the user to accurately pinpoint sheath faults with simple procedure and easy-to-read results.
Simple, accurate sheath fault and ground fault pinpointing
The ESG NT2 earth fault locator measures the step voltage potential produced by underground test generators. Other existing underground distortions such as potential equalisation current, DC offset, 16 ²/ ³ Hz or influences from cathodic protection systems are automatically detected and eliminated. The automatic zero calibration maintains the display calibration continuously at zero.
User-friendly readings
The ESG NT2 has a high-contrast color display on which the measured step voltage is displayed in two ways: as a bar graph (similar to a conventional pointer instrument), and as a continuous “history-display” which shows both the current process and the last 5 to 6 measurement records. The deflection of the instrument always indicates the direction of the earth fault.
Automatic sequences for ease and accuracy
With built-in automation, the ESG NT2 requires minimal user input for accurate fault detection. Basic settings can be easily adjusted using the rotary encoder, while the device automatically adapts to input voltage levels. No manual calibration of the display, zero point, or measurement range adjustments are needed.
LV fault location without supply interruption
Traditionally, locating faults in low-voltage networks required disconnecting households from the power supply. However, with the ESG NT2 it is possible to detect cable faults while the power remains on, keeping households connected.
This breakthrough eliminates the need for costly and time-consuming customer coordination or unnecessary excavations to disconnect power. As a result, network operators can respond to faults more efficiently, reducing costs while ensuring a secure and rapid resolution.
Specifications
Frequently Asked Questions
What is the step voltage method?
Faults in the cable sheath and ground faults cause the DC current from test device to flow into the ground. The current builds a voltage gradient which can be measured by earth spikes and earth fault locators.The step voltage method accurately locates sheath faults: as it approaches the fault point, the step voltage potential increases. After it passes the fault, the potential decreases with reversed polarity. The change in polarity allows the fault to be located precisely. The ESG NT2 measures this step voltage potential to precisely locate faults in underground cables.
What accessories and bundles are available with the ESG NT2?
The standard ESG NT2 comes with the display unit, earth spikes, and test leads. The product available as combination set with the digiPHONE+ in one unit. For more details and to request a quote, get in touch with our team.
