The CVT-765 determines the transformer turns-ratio using the IEEEC57.12.90 measuring method. It uses a 7500Vac excitation voltage source to accurately measure the turns-ratio of Capacitor Voltage Transformers with a rating of up to 765KV. The transformer turns-ratio is determined by precisely measuring the voltages across the unloaded transformer windings.The CVT-765 can measure the turns-ratios of Capacitor VoltageTransformers ranging from 75 to 15,000. The measured turns-ratio, winding polarity, and winding phase angle are displayed on the unit’s LCD screen.A transformer’s name plate voltages can also be entered, and the CVT-765will display the turns-ratio percentage error by comparing the test results with the name plate voltage values. This convenient feature eliminates any user-calculation errors when testing transformers.User InterfaceThe CVT-765 features a back-lit LCD (128 x 64 pixels) screen that is viewable in bright sunlight and low-light conditions. A rugged 16-key membrane keypad is used to enter test information and to operate the unit.Test Record StorageThe CVT-765 can store 128 records of 33 readings internally, and up to 999 test records on an external USB Flash drive. Test records can be recalled using the included Transformer Analysis PC Software.Computer InterfaceA Windows® based (XP/Vista/7) Transformer Analysis Software is provided with each unit and can be used to remotely control the CVT-765 via the RS-232C port. Using this software, the user can retrieve test records (from the CVT-765’s memory or a USB Flash drive), analyze test results, and print test results on a desktop printer. Test results are automatically exported to PDF,EXCEL, and XML formats.
Operating Voltage: The CVT-765 can be operated from 100-120Vac or 220-240Vac. The proper voltage can be set using the voltage selection switch on the front panel.
Features:
- Standalone or computer-controlled
- Can test CVT’s rated up to 765 KV
- Displays turns-ratios from 75-15,000
- Calculates turns-ratio percentage error when nameplate voltages are provided
- Displays winding polarity and phase angle
- Dimensions: 19.5” x 12” x 17” (49.5 cm x 30.5 cm x 43.2 cm)
