Locates, measures and records PD activity in all substation assets – including cables
The UltraTEV Locator™ takes the investigation of Partial Discharge (PD) activity to a new level of accuracy and sophistication, allowing you to avoid power outages and maintain asset health.
The UltraTEV Locator™ is a powerful and versatile Partial Discharge (PD) investigation unit. The device itself is portable and easy to use with minimal training.
It works with all existing substation assets, including cables and overhead equipment.
Approximately 85% of all disruptive substation failures are PD related and could have been avoided through proper monitoring and pre-emptive action.
Benefits:
Locating and measuring PD activity to identify faults BEFORE they lead to failures
Recording and analysing PD activity to provide valuable information on the actual condition of assets
More effective asset management, reliability, efficiency and safety, at lower cost
Features:
Ability to pinpoint PD activity to within 10cm
Ultrasonic and TEV sensors for surface and internal PD
Measures environmental conditions: temperature, pressure and humidity
Records the severity of PD for diagnostic analysis
Works with cables and overhead assets
Tough, weatherproof case with built-in 13 hour battery life
Multiple Functions:
PD Location:
Both TEV Probes are used to locate the source of the PD activity, using time-of-flight measurements between the two probes.
The latest electronics enable the system to calculate the site of the discharge to an accuracy of 0.3ns (nanoseconds), equivalent to 10cm.
PD Survey:
In survey mode, a single probe is used in the same ways as our UltraTEV Detector™ and UltraTEV Plus+™ handheld instruments, to detect PD activity.
Both ultrasonic and TEV sensors are used.
The magnitude of the PD is displayed along with a simple traffic light indicating the level of PD activity detected. Green indicates no significant discharge, amber indicates some activity, and red warns the activity is at a level that warrants further investigation.
Operators can use the default factory set threshold levels, or set their own.
PD Comparative Measurement: Operators have a range of options:
Measure the surface PD activity using the ultrasonic mode, and compare the result with those taken from other similar assets.
Listen to the surface PD activity from the audio output.
Take TEV readings of internal PD activity at various points on the asset.
Cable PD Activity:
PD activity in cables is measured using a plug-in Radio Frequency Current Transformer (RFCT)
Results are displayed in pico Coulombs (pC) as numerical values.
PD Activity Recording:
All of the measurements taken by the UltraTEV Locator™, including the audio output, can be saved to the system’s internal memory. The saved data can be downloaded via the USB port to a memory device.
The files can then be read directly into a spreadsheet for inclusion in reports, etc.
TEV:
Sensor: Capacitive
Measurement Range: 0 – 60dBmV
Resolution: 1dB
Max Pulses/Cycle: 2216
Min Pulse Rate: 10Hz (rolling displays only)
Precedence: 0.3ns equivalent to 10cm
Discharge Pattern Phase Reference: Optical or plug-in