Prova 1660 Transformer Turns Ratio Meter

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Prova 1660 Transformer Turns Ratio Meter
  • Application

  • The Prova 1660 does accurate single-phase and three-phase turns ratio measurements for both voltage and current transformers. The typical VT (PT) ratio is 0.8 ~ 10,000, and the CT ratio is 0.8 ~ 2,000
  • Key Features

  • Measurements & connections graphically shown on large LCD
  • Test data displayed along with transformer nameplate values
  • Test data includes Turns Ratio, Deviation, Secondary Output, Excitation Voltage, Current, and Phase Angle
  • Check for live test points, short circuit, open circuit, and reverse polarity before each measurement
  • Ten test frequencies, (50Hz ~ 400Hz)
  • Store 4096 files of test data and nameplate values
  • 9 types of 3Φ windings connections pre-installed for easy user selection
  • Wireless Bluetooth communication with PC
  • Selectable filter to remove field noise (Slow, Normal, Fast)
  • User-programmable Reference Correction Factor, 0.99 ~ 1.01, to correct accuracy to within 1%
  • Records are date and time stamped
  • PC Application Software included



Ratio Range (VT/PT) Autoranging: 0.8000 to 10,000
Accuracy (70Hz) Ratio Range Accuracy (% of Reading)
0.8000 ~ 999.99 ± 0.1%
1,000.0 ~ 4,999.9 ± 0.2%
5,000 ~ 10,000 ± 0.25%
Ratio Range (CT) Autoranging: 0.8000 to 2,000
Accuracy (70Hz) Ratio Range Accuracy (% of Reading)
0.8000 ~ 2,000 ± 0.5%
Excitation Signal VT/PT Mode: 34Vrms max
CT Mode: Auto Level 0 to 1A, 0.1 to 20Vrms
Excitation current display Range: 0 to 1000mA
Accuracy: ±(2% of Reading + 2mA)
Excitation frequency (Hz) 50, 55, 60, 70, 100, 120, 200, 240, 300, 400
Display 5” Large dot matrix LCD display (240 x 128) with backlight
Power source Rechargeable Lithium Battery, 3400mAh
Battery life Over 10 hrs of continuous operation. Battery life (%) indication
Battery charger Universal input (90 to 264 Vrms input)
Charging time < 4 hrs.
Data storage 4096 Files Each (VTM, CTM, VTR, CTR, BMP)
Date / Time Battery-backed, Real-time Calendar clock
Measurement method ANSI / IEEE C57.12.90 and IEC 600076.1
Operation Environment 5°C ~ 50°C, 85% RH
Storage Environment -20°C ~ 60°C, 75% RH
Accessories Test leads (set of 2)
Alligator clips (4pcs.)
Rechargeable lithium battery
User manual
AC adaptor
Power cord
Software CD & Manual
Carrying bag