UHF PDD - Measurement Megger - Free user manual and instructions
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| Product type | Ultra-High Frequency (UHF) Partial Discharge Detector |
| Brand | Megger |
| Model | UHF PDD |
| Category | Measurement |
| Measurement principle | Detection of partial discharge activity using UHF signals |
| Frequency range | 300 MHz to 3 GHz typical UHF PD band |
| Applications | Gas-insulated switchgear (GIS), transformers, cables and high-voltage assets |
| Display | Backlit LCD showing signal strength and measurement data |
| Controls | Power, sensitivity adjustment and mode selection |
| Power supply | Integral rechargeable lithium-ion battery, 7.2 V typical |
| Battery life | Approximately 8 hours of continuous operation |
| Charger input | 100-240 V AC, 50/60 Hz via supplied adapter |
| Dimensions | 200 mm x 100 mm x 45 mm approximate |
| Weight | 0.6 kg approximate (1.3 lb) |
| Enclosure material | Robust ABS plastic with rubber overmold |
| Operating temperature | -10 °C to +50 °C |
| Storage temperature | -20 °C to +70 °C |
| Main functions | Detection, localized measurement and recording of partial discharge signals |
| Outputs | Headphone output and USB data connection |
| Accessories included | UHF sensor, charger, carrying case and instruction manual |
| Maintenance and cleaning | Wipe with a dry soft cloth, do not use solvents or abrasive materials |
| Safety | IEC 61010-1 compliant, use with appropriate high-voltage safety precautions |
| Spare parts and repairability | Replaceable battery and sensor, service by authorized Megger service center |
| General information | Delivered with user manual in PDF format and 12-month warranty |
Frequently Asked Questions - UHF PDD Megger
How do I use the Megger UHF PDD to detect partial discharge?
Connect the included UHF sensor to the detector, switch on the device and adjust the sensitivity to the desired level. Move the sensor slowly around the test object while watching the signal strength display and listening through the headphone output for characteristic partial discharge pulses.
What types of partial discharge can be detected?
The UHF PDD can detect partial discharges such as internal voids, surface discharges and corona activity in high-voltage equipment. The ultra-high-frequency method is particularly sensitive to fast current pulses generated during discharge events.
Can the UHF PDD be used on live equipment?
Yes, the UHF detection method is non-invasive and can be used on energised systems, for example GIS and cable terminations. Always follow the safety instructions in the manual and use the appropriate personal protective equipment.
How do I distinguish partial discharge signals from external noise?
Compare the signal shape and repetition pattern on the display, use the headphone output to listen to the acoustic signature, and change sensor position. Typical PD signals are repetitive and synchronised with the power frequency, while noise tends to be broad-band and random.
How do I charge the battery?
Connect the supplied AC charger to the charging input on the side of the device and plug it into a 100-240 V AC outlet. The battery indicator on the display shows charging status. A full charge typically takes 2 to 3 hours.
What does the display show during measurement?
The backlit LCD shows the relative signal amplitude, battery level and the selected sensitivity mode. On some units it can also display a pulse count or a simple bar graph for easier comparison.
How should I clean and maintain the UHF PDD?
Clean the casing and display with a dry soft cloth. Do not use solvents, sprays or abrasive cleaners. Keep the connector between the sensor and detector clean and dry, and store the unit in the provided carrying case when not in use.
How long does the battery last on a full charge?
The integral rechargeable lithium-ion battery provides approximately 8 hours of continuous operation. This may vary with ambient temperature, display brightness and the use of the headphone output.
Is the Megger UHF PDD waterproof?
No, the UHF PDD is not waterproof. It is intended for indoor or sheltered outdoor use. Avoid exposing the instrument to rain, moisture or condensation, and do not operate it in a humid environment without proper protective housing.
What accessories are included with the UHF PDD?
The instrument is delivered with a UHF sensor, an AC charger, a carrying case and the instruction manual in PDF format. Optional accessories such as a headphone set may be available from Megger dealers.
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USER MANUAL UHF PDD Megger
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Product information
Brand : Megger
Model : UHF PDD
Category : Measurement