PD-SGS handheld online PD detector

The BAUR handheld online PD detector PD-SGS is used to conduct rapid initial tests for PD activities on live switchgear. Potential weak points are immediately signalled acoustically and numerically. The user is also provided with recommendations for how to deal with the switchgear under test by means of a traffic light system. This makes it possible to quickly evaluate the condition of the entire substation in order to use the measurement results to effectively plan cost-efficient further investigations or immediate maintenance.
The integrated capacitive TEV and acoustic sensors in the PD-SGS rapidly and reliably identify both the internal high-frequency switchgear partial discharges and the partial discharges of the surfaces which arise as a result of tracking on the surfaces, or due to corona discharges. The BAUR handheld detector has a connector for a parabolic aerial for examining difficult-to-reach system components.
As safety equipment for daily use, the PD-SGS is used by test personnel to conduct a quick safety check to determine whether the work area around the switchgear is safe.

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▪ Test whether the switchgear is PD-free
▪ Test whether the extent of the PD activities requires further examination such as online PD spot testing or offline
diagnostic testing
▪ Test whether the extent of the PD activities requires immediate maintenance work
▪ Test whether the work area around the switchgear is safe


▪ Measurement of PD which spreads across the surfaces of switchgear by determining the transient earth voltage (TEV)
▪ Detection of PD activities on switchgear components, such as busbars and cable accessories by means of ultrasound
▪ Highly sensitive acoustic sensor for detection of ultrasound emissions
▪ Automatic detection of background interference signals
▪ Acoustic and numerical display of the ultrasound and TEV measurement results
▪ Acoustic output via headphone connection or integrated loudspeaker
▪ Two display modes:
– Level (real-time signal level)
– Trend (PD activity over a 5-second period)
▪ Bright, legible OLED display with dB indicator
▪ Very user-friendly handheld device with minimum training required
▪ Ergonomic and compact design
▪ Robust plastic housing with a protective rubber sleeve around the sensors
▪ Long-life rechargeable battery for a full day’s work
▪ Standard delivery includes function tester

PD-SGS handheld online PD detector