Catalog excerpts
UHF Antenna Partial Discharge Detection for Power Transformer The UHF Antenna is designed to measure partial discharge in oil-insulated medium to large power transformers. It is the ideal tool to measure partial discharge activity from the inside of the transformer thus avoiding to measure interference from nearby high voltage equipment. The UHF Antenna can be used with either the XDP-II PD detector or the AE-150 localisation system. EASY TO INSTALL The antenna comes with DN 50 and DN 80 flange adaptor A bleeding valve is present on the flange to avoid the air bubble creation The locking guide on the rod allows proper insertion depth of the antenna Custom flanges can be supplied MOST COMPACT ON THE MARKET The UHF antenna is the most compact antenna for power transformers on the market. It can be inserted in the transformer via the oil drain valve or the oil sampling valve. Partial discharge measurement is then performed from inside the tank to eliminate noise like corona discharges coming from outside the transformer. This guarantees sensitive Partial Discharge measurements. UHF antenna When used with AE-150 Partial Discharge pinpointing system for power transformers, the antenna provides a trigger signal for acoustic PD synchronization and de-noising. ndb Technologies inc. • 1405 St-Jean-Baptiste, office 111 • Quebec (QC) G2E 5K2 - Canada • Tel: 1(418)877-7701 Fax: 1(418)877-7787 Email: mkt@ndbtech.com
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LOCKING GUIDE TECHNICAL SPECIFICATIONS The locking guide allows the user to insert the UHF antenna in a transformer to a known depth. Simply adjust the guide on the antenna's rod, lock it, and you are ready for insertion. The locking guide is made of high quality aluminum. Power supply Connector type Power indicator Air purge using the purge valve Insertion measurement Locking guide Output impedance ADAPTER FLANGES ANODIZED ALUMINUM CASE Flange DN80 / NPS3 ASME/ANSI B16.5 CLASS 150-300 The UHF antenna is made from high quality anodized aluminum to prevent oxidation. Its machined case is...
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