For all your test equipment requirements

PROVA 1660 Transformer Turns Ratio Meter





■ Measurements of 1Φand 3ΦTransformer/VT/CT Turns Ratio.

VT/PT ratio 0.8~10000, CT ratio 0.8~2000.

Graphical and Literal Illustration of Measurements and Connections with Large Back-lighted Dot Matrix 240 x 128 LCD.  Display Test Data with Nameplate Transformer Values for Easy Interpretation.

■ 10 Test Frequencies (50~400Hz).

■ Display Turns Ratio, Deviation, Secondary Output, Excitation Voltage and Current, Phase Angle and Nameplate Transformer/VT/CT Values in one page for easy transformer quality interpretation.

■ Check for Live Test Points, Short Circuit, Open Circuit, and Reverse Polarity before Each Measurement.  Message is displayed to Warn Users (But, checking is not performed once measurement starts).

■ Store 4096 Files of Transformer Nameplate Values (VT/PT/CT, 1Φ/3Φ, Test Frequency, Primary and Secondary Voltages or Ratio, RCF) and Measuring Data.

9 types of 3Φ Windings Connections pre-installed for easy user selection.

■ Wireless Blue Tooth Communication with PC.

■ Select Filter to Remove Field Noise (Slow, Normal, Fast).

■ Disable or Enable Auto-Power-Off with Programmable Time.

■ Built-in calendar clock.

Records with Date and Time Stamp.

■ Powerful Lithium Battery (3400mAH) with built-in Charging Circuit.

User Programmable RCF (Reference Correction Factor, 0.99~1.01) to Correct Accuracy within 1% Error.

Friendly File System for Easy On-site Data Retrieval and Nameplate Values Management.

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SKU: PROVA 1660 Category: Tag:

PROVA 1660 Transformer Turns Ratio Meter can accurately measure 1-phase and 3-phase Transformer/VT/CT turns ratio, Excitation current, Phase angle and Deviation.  Its measurement range is quite wide (from 0.8:1 to 10000:1), and the best accuracy is 0.1%.


PROVA 1660 is light, portable and easy to use.  Powered by a rechargeable lithium battery it can continuously work for 10 hours or more.  Users just need to follow the graphical and literal illustration of LCD display to make winding connection.  If the transformer is live with voltage or the winding connection is wrong, PROVA 1660 will warn users.  Also, PROVA 1660 can store 4096 files of measurement data, and they can be transferred to a PC via wireless Blue Tooth.


Transformer is a very important element in the electric power distribution system.  It needs to be timely maintained.  With PROVA 1660 users can ensure the correct turns ratio and quality of the transformer, then the operation of the power distribution system can be further guaranteed.


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