Transformer Turns Ratio Meter TTR-400 is designed to measure the voltage ratio and turns ratio of singe phase or three-phase distribution transformers or power transformers in a substation or manufacturing environment according to test standard IEC 60076 and IEEE C57.12.90.

The main features of Transformer Turns Ratio Meter TTR-400 are as follows:

●Measures turns ratio, voltage ratio, phase displacement

●Variable test voltage:0~160V

●Automatic winding connection identification and vector group test

●7” touch screen for easy operation

●Simplistic user interface for quick test setup

●Save the test results on-board

●Download test results via USB interface

●Print the test results via built-in printer

●Adopt three-phase precision inverter power supply for more accurate measurement

●Has high and low voltage reverse connection protection and transformer interturn short circuit protection

●Supplied in a compact and rugged case for portability

◇Test Standard: IEC60076 and IEEE C57.12.90

◇Ratio Measurement

range: 0.9-10000

accuracy: ±0.1% @ 0.9-500 

                 ±0.2% @ 501-2000  

                 ±0.5% @ 2001-10000

◇Phase Angle Measurement

range: ±180°

accuracy: ±0.1°

resolution: 0.01°

◇Test Voltage:0~160V

◇Internal Data Storage: up to 1000 data sets

◇Built-in printer for printing test results directly 

◇Power Supply: customized(AC230V/120V±10%,50Hz/60Hz)

◇Dimension: 360x290x170mm(14.17x11.42x6.69 in)

◇Weight: 5.9kg(13.01 lb)

◇Environmental Conditions

storage temperature: -20℃~60℃

humidity: <90%

operating temperature: -10℃~50℃

◇Safety Qualifications and EMC

Safety: designed in accordance with IEC61010-1

EMC: light industrial IEC 61326

Transformer Turns Ratio Meter TTR-400 is powerful tool for testing voltage ratio and turns ratio of power transformers.