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A Leading South African Test and Measurement Instruments Supplier |
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“For Good Measure”® |
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Please contact us by phone, email or visit us at the details given above. We look forward to hearing from you. |
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Product List |
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T.M.I. |
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Test and Measurement Instruments C.C. |
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CK 1985/007464/23 |
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“Tomorrow’s Instruments Today” — “For Good Measure” ® |
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TMI, Established—1982 |
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English, Afrikaans, Portuguese Speaking. Master/Visa Credit Cards |
TM-GDB-II Transformer Turns Ratio Meter |
Transformer Ratio |
This Transformer Turns Ratio Meter is ideal for Testing Single and 3 Phase Transformer Ratios, fully automatic, with no manual balancing. Auto calibrating, Calculates the ratio error and saves the test date automatically. Has Built-in Printer for last 30 records. |
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Datasheet (80KB) |
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TM-GDB-II Transformer Turns Ratio Meter |
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T + M ® |



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Excess Stock to be cleared while stocks last. > Click for More... |
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Test our Service and Measure with our Instruments. |
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Applications
Auto Transformers, Power Transformers and Distribution Transformers. Turn Ratio testing of Current Transformers. Verification of connection methods (Dy-Dd-Yy-Yd) of windings of the Transformers. Verification & Checking of on load Tap Changers. |
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Key Features of Transformer Turns Ratio Meter
· Fully automatic testing, no manual balancing. · Large LCD screen display menu and results. · Test single phase and three phase transformers. · Measure transformer connection groups automatically. · Switch measuring range automatically. · Calibrate automatically. · Calculate ratio error automatically. · Save the test data automatically. · Built-in printer, recall and print last 30 records. · Truly portable, easy to carry. · Automatically cut off power after testing. · Fuse protection for test leads short circuit. · Fuse protection and Reset protection for reverse connection of HV side and LV side. |
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Copyright © 2009—2025 Test and Measurement Instruments C.C. | All rights reserved Transformer Turns Ratio Meter |
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We would be very pleased to see you at our offices and show room at the address given above. Please use the maps supplied on our Contact Us page, or call us for directions, should you not be using our GPS Co-Ordinates supplied. It will be our pleasure to assist with your unique requirements. We trust that your visit will be an enjoyable one. T+M® For Good Measure. |
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T + M ® |
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Brand Names |
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All brands, trade names, trade marks, and logos are the property of their respective owners. |
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Ph: +27 (011) 683 4365 / 6 E-mail: sales@instrumentsgroup.co.za
Physical Address: 3 Angelica Ave, Glenvista, Johannesburg, 2091 SOUTH AFRICA
Postal Address: As Above. |














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Accessories |
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GDB-II instrument |
1pc |
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Carrying bag |
1pc |
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HV side test lead |
1pc |
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LV side test lead |
1pc |
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Power cord |
1pc |
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Ground cable |
1pc |
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1A spare fuse |
4pcs |
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2A spare fuse |
4pcs |
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Print paper |
2rolls |
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Use's guide |
1pc |
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Factory test report |
1pc |
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Specifications |
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Power Supply |
AC220V ±10%, 50Hz ±1 |
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Turns Ratio Range |
0.7 : 10000 |
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Display |
Large LCD screen |
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Accuracy |
0.2% |
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Test Voltage |
HV : AC190V |
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LV : AC 0.19V ~ 190V(vary with ratio) |
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Working Condition |
Ambient temperature 0~40ºC |
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Ambient humidity<85%RH |
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Dimension |
Main Unit:420 x 340 x 190mm |
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Accessory bag:310 x 230 x 90mm |
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Weight |
Main unit : 9.5kg |
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Accessory bag:2kg |
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Total package weight: 18kg(with wooden case) |
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