Partial Discharge
Using EA Technology UltraTEV the world's first combined ultrasonic and transient earth voltage (TEV) detection, hand-held instrument, capable of detecting both surface and internal discharges in electricity switchgear from 3.3kV- 38kV. Our technicians can quickly scan for sings partial discharge The UltraTEV hand-held instrument combines ultrasonic sensors to pick up early signs of surface discharge, with transient earth voltage (TEV) sensors to detect internal discharges. The key to the UltraTEV's accuracy is the threshold levels to which the condition indicators have been set. These have been derived by EA Technology from measurements of partial discharge taken in 6,000 substations and involving nearly 50, 000 switches.
The MiniTEV detects partial discharge, giving a reading of both decibel level and pulse frequency. This allows a graded indication of discharge level.
Transient Earth Voltages(TEVs)
Measuring TEV emissions are a highly effective way of detecting, quantifying and locating PD activity in live assets.
The importance of TEV effects (discharges of radio energy associated with PD activity) was first identified by EA Technology in the 1970s TEV sensors are employed in all of the above instruments. This makes them far superior to products that only measure ultrasonic emissions.
Ultrasonics
PD activity creates emissions in both the audible and ultrasonic ranges. The latter is by far the most valuable for early detection and measurement.
The Ultra TVE and the Ultra TVE Plus employ ultrasonic sensors, in addition to TEV sensors.
Measuring TEV emissions are a highly effective way of detecting, quantifying and locating PD activity in live assets.
The importance of TEV effects (discharges of radio energy associated with PD activity) was first identified by EA Technology in the 1970s TEV sensors are employed in all of the above instruments. This makes them far superior to products that only measure ultrasonic emissions.
Ultrasonics
PD activity creates emissions in both the audible and ultrasonic ranges. The latter is by far the most valuable for early detection and measurement.
The Ultra TVE and the Ultra TVE Plus employ ultrasonic sensors, in addition to TEV sensors.