Macey's Electrical - Serving Electrical Utilities - A Network of Quality Equipment

Haefely Hipotronics

 


Product Links

DTTS Transformer Test Systems
TTR2796 3-Phase Transformer Ratio
TTR2795 3-Phase Transformer Ratio
FRA5310 Frequency Response
RVM5462 Recovery Voltage Meter
2293 Winding Resistance Meter

 

 

Documentation

 

 

Applications

Instrument Transformers
Power Transformers
Distribution Transformers
Phase Shifting Transformers
Rectifiers
Arc Furnace
Traction Transformers

 

Related Products

 
TTR 2796 Transformer Turns Ratio Meter
TTR 2796 Transformer Turns
Ratio Meter
 
FRA 5310 Frequency Response Analyzer
FRA 5310 Frequency Response Analyzer
 
RVM 5462 Advanced Recovery Voltage Meter
RVM 5462 Advanced Recovery Voltage Meter
 

Home | Products | Haefely-Hipotronics | Transformer Test Equipment | TTR 2795 Three-Phase Transformer Turns Ratio Meter

 

HAEFELY Hipotronics Logo

TTR 2795 3-Phase Transformer Turns Ratio Meter - Overview
 

Overview - Fully automatic three-phase Transformer Turns Ratio Meter
On-site testing of turns ratio is an important basic measurement for power transformer diagnosis. It helps to detect faulty transformer windings as well as defective tap changer positions. The simple ratio of turns or voltage and related ratio error is not sufficient to detect all possible failures of a power transformer winding.

The excitation current and the phase angle between primary and secondary windings give additional information about the winding condition. The TTR 2795 provides all these measurements in one compact instrument.

Transformer Turns Ratio Meter TTR 2795 is the next generation of the very successful Tettex transformer turns ratio meter line. This advanced instrument recognizes winding connections and vector group numbers of transformer windings. Just connect the measuring cables and press the start button. In addition, the selectable test voltages of 100V, 40V, 10V and 1V avoid saturation effects on current transformers.
 

TTR 2795 3-Phase Transformer Turns Ratio Meter

 

Features

  • Large graphic display shows all data at a glance and displays tap changer results in clear graphic design.
  • Fully automated three-phase measurement of turns ratio, voltage ratio, phase displacement, and excitation current.
  • Better transformer excitation due to higher test voltage.
  • Highest accuracy on the market - up to 0.03%.
  • Ratios of up to 50,000 can be measured.
  • Measurement of phase displacement transformers.
  • Quick setup with intuitive guide-through user interface.
  • Automatic Winding Connection Identification (AWCI) and automatic vector group detection supports quick and easy operation.
  • Remote tap changer switch.
  • Safety connection control feature: Proofs test setup before Appling regular test voltage.
  • Light-weight, rugged and compact design.
  • Built-in printer.
  • Free external application software allows data exchange, analysis and report generation.

Measurement Range and Accuracy

Ratio

at 100 Volts

at 40 Volts

at 10 Volts

0.8 to 100

0.03%

0.05%

0.05%

101 to 1000

0.05%

0.05%

0.05%

1001 to 1500

0.05%

0.05%

0.10%

1501 to 2000

0.05%

0.05%

0.15%

2001 to 4000

0.05%

0.10%

n/a

4001 to 13000

0.15%

n/a

n/a

13001 to 20000

0.20%

n/a

n/a

 

Specification

Measurement

Range

Resolution

Accuracy

Excitation Current

0 to 1A

0.1mA

3% of rdg 2mA

Phase Angle

180

0.01

0.05

 

Please Note: at excitation voltage, values valid after a warm-up period of 30 minutes

 

Environmental Specifications

Operating Temperature

-10C to 55C

Storage Temperature

-20C to 70C

Relative Humidity

5% to 95% non-condensing

 

General Specifications

Display

5.2-inch dot matrix LCD, 240 x 128 module with backlight

Power Supply

95 Volts to 240 Volts AC. 50/60Hz, 1.3A maximum

Excitation Voltage

1V, 10V, 40V, and 100V; Automatic or Manual selectable

Excitation Current

1 Amp maximum (10mA at 1V)

Memory

Stores up to 100 complete test results / test setups

Printer

Thermal strip printer, paper width 58mm

Interfaces

Computer:RS-232, 19200 baud, 9-pole
Tap Changer: 3-pole contact in/out (potential free)

Dimensions

41cm (L) x 31cm (W) x 17cm (D)

Weight

8.8 kg excluding cables

 

Scope of Supply

Qty 1

TTR 2795 instrument in shell case, and cable bag

Qty 2

3-phase cable sets (5 meter spider and two sets of clamps)

Qty 1

Remote control and report generation software

Qty 1

Remote /data transfer cable

Qty 1

Mains cable

Qty 1

Operator manual

Qty 1

Calibration certificate
 

Ordering Information

Haefely Hipotronics TTR 2795

Transformer Turns Ratio Meter (includes Scope of Supply as above)

 

Optional Accessories

Haefely Hipotronics 2795/V

Verification box is used to check the correct functionality of the Ratio Meter and its connected measuring cables.

Haefely Hipotronics 2795/Tap

External Tap Test Start Switch - is used for convenient remote tap changer testing.

Haefely Hipotronics 2795/10

Additional two 3-phase extension cables (10 meters) - Used to extend the reach of the basic connection set by another 10 meters. (the final length results in total 25 meters (10+10_5) with this additional cable set)

   

Our Partners

  

     
 

Home | Products | Search | Site Map |

 
 

Macey's Electrical Pty. Ltd.
ABN 17 344 601 468
Unit 1, 49 Gavenlock Road, Tuggerah, NSW Australia 2259
Phone: +61 2 4353 4644    Mobile: 0412 678 925
Email: sales@maceyselectrical.com.au