ATRI-3
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Transformer Testing

ATRI-3

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(4.8 Reviews)

ATRI-3 Catalog Automatic Turns Ratio Instruments, Ratio 2-200
This is a Legacy Product.


comes with 10 meter long cables for both HT and Lt
Injects LV and measures on both LV and HV , using four wire method to determine: Ratio, Polarity, Deviation, Excitation Current

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Product Overview

Official Catalog

Download PDF
ATRI-3 Catalog.pdf Page 1
ATRI-3 Catalog.pdf Page 2
Key Features & Introduction


  • Fully Automated measurement of Ratio, HT LT voltage, excitation current, polarity.
  • Display- 16X2 Blue moon Monochrome Display
  • Sensing and Excitation Terminal for LT Voltage
  • Sensing Terminal for HT Voltage
  • Selector Switch knob is provide to test turns ratio of three phase transformer without changing clip.
  • ON/OFF Switch for applying test voltage
  • LED indication for excitation
  • Aux. ON./OFF Switch
  •  4X4 Keypad
  • protection. -   1A Fuse is incorporated with in fuse holder for Aux. Supply - 230V AC ± 20%
  • HT & LT Cable  - 10 mtr

Technical Specifications

Technical Specifications

Parameters- Turns Ratio, Percentage Deviation, Vector Group, Excitation Current, HT & LT Voltages and Polarity.

Principle- Applying test Voltage to the Low Voltage Winding of a transformer and accurately measures the resulting voltage from the high voltage winding.

Excitation Voltage and Current- 2.2 V AC, 100Hz. Max 500mA.

Accuracy- Class 0.1

Vector Group- YNyn0 & Dyn11

Range (Ratio)- 1 to 200.

Weight (Approx.)-  3.2 KG 

Dimension- Front -131 (H) 280(W) 280(D) (mm)

Test Transformer- Up-to 25 MVA