The systems ATT320/W are designed for the testing in production of electrical transformers and are based on e.d.c.'s 50-year experience in testing systems. Are available many models of singlephase and or threephase transformers from few Watt up to 100KW, from 4 to 36 terminals (standard steps of 1KW – 10KW – 100KW, 4/8/12/16/24/36 terminals). Different versions allow the testing on automatic line or for operator use, with single station or double station workbenches. Obviously, there are many personalized solutions on the base of the characteristics of the products to be tested and of the production requirements.
The system ATT320/W includes in the basic version all the measurements and essential functions e of saving, stamp and archiving of the testing results.The system allows the printing of many certificates in different languages and can allow also the printing of adhesive labels. The system has a software storage program both for the testing programs and parameters and of the testing results, preventive maintenance programs, calibration software and autodiagnostic software; in addition, are available remote assistance software and many different options, including the possibility to link to a local network through LAN.
The systems ATT320/W can be interfaced to automatic lines, for which as options can be supplied different types of workbenches (single station, double station, rotating table, …), or can be realized for operator use, with external or integrated workbenches, single or double station, multistation with rotating table, …
Several others test are proposed as option. The most important optional tests are the Partial Discharge Test that are strongly suggested.
e.d.c. is the first European Company to study (since 1998) and propose new tests that allow identification of insulation problems between windings to GND and between turns of the same winding that the standard High Voltage and SURGE tests cannot identify. These problems produce failure of transformers after short operating times (hours, days or weeks) in particular when the transformer is powered with high voltages or high frequencies. These tests are really reliable and effective in founding in an easy way faults that the standard tests cannot identify and in check in a way at the same time easy to use but sophisticated from the measurement point of view that the quality of the tested product is of the same quality of the reference master.