Turns Ratio Tester TRT33A

Overview

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TRANSFORMER TEST EQUIPMENT
Three-Phase Transformer Turns Ratio Testers
Turns Ratio Tester TRT33A

TRT30A is a three-phase, fully automatic test set specially designed for turns ratio, phase shift and excitation current measurements of power, distribution and instrument transformers. TRT33A determines transformer turns ratio by accurately measuring the voltages across the unloaded transformer windings and then displaying a ratio of these voltages.
 

  Test voltages from 8 V AC up to 100 V AC
Ratio range 0,8 – 15 000
The best ratio accuracy of 0,05%
Built-in tap changer control unit
Built-in USB flash drive
True three-phase and single-phase test
Automatic vector group detection
Detailed analysis of test results using DV-Win software
Pre-programming test-plans deploying DV-Win software
Lightweight – only 8 kg


True three-phase test voltage allows testing any type of transformer, including special transformers like phase shifting, arc furnace, rectifier transformers, etc.

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  • Included accessories
    • DV-Win PC software
    • Ground (PE) cable
    • USB cable
    • Built-in Tap Changer Control Unit
    • Tap Changer Control cable set 5 m
    Recommended accessories
    • H winding test lead set, 4 x 10 m with TTA clamps
    • X winding test lead set, 4 x 10 m with TTA clamps
    • Cable plastic case – large size
    • Transport case
    Optional accessories
    • Built-in thermal printer 112 mm
    • Thermal paper roll
    • Plastic transport case
    • Plastic transport case with wheels
    • Cable bag
    • Cable plastic case – small size
    • Cable plastic case with wheels – large size
    • Cable plastic case – medium size
    • Cable plastic case with wheels – medium size
    • Bluetooth communication module
    • Inverter 12 V DC to 230 V AC, 50 Hz
    • H winding test lead set, 4 x 5 m with TTA clamps
    • X winding test lead set, 4 x 5 m with TTA clamps
    • H winding test lead set, 4 x 15 m with TTA clamps
    • X winding test lead set, 4 x 15 m with TTA clamps
    • H winding test lead set, 4 x 20 m with TTA clamps
    • X winding test lead set, 4 x 20 m with TTA clamps
    • H winding cable extension set, 4 x 5 m
    • X winding cable extension set, 4 x 5 m
    • H winding cable extension set, 4 x 10 m
    • X winding cable extension set, 4 x 10 m
    • TRTC Verification Calibrator with associated cables
    • H winding test lead set, 4 x 5 m with TTA clamps (for TRT only)
    • X winding test lead set, 4 x 5 m with TTA clamps (for TRT only)
    • H winding test lead set, 4 x 10 m with TTA clamps (for TRT only)
    • X winding test lead set, 4 x 10 m with TTA clamps (for TRT only)
    • H winding test lead set, 4 x 15 m with TTA clamps (for TRT only)
    • X winding test lead set, 4 x 15 m with TTA clamps (for TRT only)
    • H winding cable extension set, 4 x 5 m (for TRT only)
    • X winding cable extension set, 4 x 5 m (for TRT only)
    • H winding cable extension set, 4 x 10 m (for TRT only)
    • X winding cable extension set, 4 x 10 m (for TRT only)
    • H winding cable extension set, 4 x 15 m (for TRT only)
    • X winding cable extension set, 4 x 15 m (for TRT only)

  • Mains Power Supply
    • Connection
    according to IEC/EN60320-1; UL498, CSA 22.2
    • Mains supply
    90 – 264 V AC, or 110 – 350 V DC
    • Frequency
    50/60 Hz
    • Input power
    200 VA
    • Fuse
    2 A / 250 V, type F, but not user replaceable
    Output data
    • Test voltage
    1 V, 8 V, 40 V, 100 V AC
    3 x (1, 8, 40, 100)√3 V AC
    Measurement
    • Ratio measuring range
    0,8 – 15 000 (5-digit resolution)
    • Excitation current range
    0 – 2 A
    • Typical excitation current accuracy
    ± (0,25% + 500 µA)
    • Excitation current resolution
      • 0,0000 – 9,9999 mA
      • 10,000 – 99,999 mA
      • 100,00 – 999,99 mA
      • 1,0000 – 2,0000 A
    •  
      • 0,1 µA
      • 1 µA
      • 10 µA
      • 100 µA
    • Phase angle range
    360º
    • Typical phase angle accuracy
    ±0,05º
    • Phase angle resolution
    0,01º
    Display
    • Display
    LCD screen 20 characters by 4 lines; LCD display with backlight, visible in bright sunlight
    Interface
    • Interface
    TRT33A is equipped with an USB port to connect to an external computer
    Test Result Storage
    • Test Result Storage
    TRT33A can store 200 transformer test records; Each test record can store 50 test readings
    Environment conditions
    • Operating temperature
    –10°C – +55°C / 14 F – 131 F
    • Storage and transportation
    –40°C – +70°C / -40 F – 158 F
    • Humidity
    5 % – 95 % relative humidity, non condensing
    Dimensions and Weight
    • Dimensions
    480 mm x 190 mm x 385 mm
    18.90 in x 7.48 in x 15.16 in
    • Weight
    8 kg / 17.5 lbs
    Safety

    • Low Voltage Directive 2014/35/EU (CE Conform)
    • Applicable standards, for a class I instrument, pollution degree 2, 
         Installation category II : IEC EN 61010-1
    • CAN/CSA-C22.2 No. 61010-1
    Electromagnetic Compatibility
    • Directive 2014/30/EU (CE Conform)
    • Applicable standard EN 61326-1

  • trt_dvwin

    The software provides numerous advantages, such as downloading test results from the instrument, acquisition of test results, creating graphs for easier analysis, creating test reports and saving them in several different formats.

    When creating test plan, the DV-Win enables automatic calculation of nameplate voltages for all tap positions. The user is allowed to edit these voltages, save the test plan and recall it onsite. All results are displayed both numerically and graphically, making analysis as easy as possible. Test report, generated with single click, can be quickly customized, and directly 

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