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 Test of energy transformers :
- Turns ratio, excitation current, internal phase displacement, vector group...
Manual Turns ratio bridge
REF PRT 6 		Automatic Turns ratio bridge
REF PRT 7		 Automatic Ratiometer
REF MRT 2
© Appareils Vettiner © Appareils Vettiner © Appareils Vettiner
Application: Measuring test for mono or three phase transformers / autotransformers, all types of coupling.
MAIN CHARACTERISTICS
  Operating mode Manual Operating mode Automatic Operating mode Automatic
Test achievement
& reading of results  		Phase per phase Test achievement
& reading of results		 Phase per phase Test achievement
& reading of results		 3 phase together
Test voltage Test voltage Test voltage
2 Test voltages 70 V & 140 V 3 Test voltages 10, 40 & 120 V 4 Test voltages 3, 10, 40 & 120 V
Turns ratio Turns ratio and Voltage ratio Turns ratio
Ratios range 1 - 1009.99 Ratios range 0.1 - 14 200 Ratios range 0.8 à 15 000/1
Resolution 1.10-2 (mini) Resolution 1.10-4 (mini) Resolution 10-4 (mini)
Accuracy</td> <td width=  Accuracy 0.02% / 0.05% Accuracy</td> <td width=  Accuracy 0.02% / 0.05% Accuracy</td> <td width=  Accuracy 0.1%
Excitation current Excitation current Excitation current
go.gif (815 bytes) Current range 500 mA Current range 500 mA Current range 1 A
Resolution indication only Resolution 1 mA Resolution 1 mA
Accuracy indication only Accuracy 1% ± 1 digit Accuracy 1% ± 1 digit
Internal phase error Internal phase error Internal phase error
Angle range ± 45° Angle range ± 10° Angle range ± 180.0°
Resolution 0.1° Resolution 0.1° Resolution 0.01°
Accuracy 0.3% Accuracy 1% Accuracy 0.5°
Vector group Vector group
Angle range 0 à ± 180.0° Angle range 0 à ± 180.0°
Hour range 1 to 11 Hour range 1 à 11
Resolution 0.01° & 1 Resolution 0.01° & 1
  Accuracy 0.3° Accuracy 0.5°
Miscellaneous Miscellaneous
Interface RS 232 bi-directionnal Interface RS 232 bi-directionnal
> Display</td> <td width= Display LCD Display Graphic
Other applications PT's & CT's Other applications PT's & CT's & CVT's
   For specific requests, consult us. Many other possibilities, all of them cannot be presented in this sum up.  
Nota : Above list and presented characteristics are not exhaustive.
Many other products ad options available. Customized solutions on simple request.
Just contact us!

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