Duncan Instruments Canada Ltd
Duncan Instruments Canada Ltd.
Electronic Measurement Solutions since 1968
ISO 9001


Digital Transformer Ratiometer Model 8510


  • Ratio Testing: PT/VT from 0.8000:1 to 8000:1 and CT from 0.8000 to 1000.0 (Auto-Ranging)
  • Tests performed by exciting the primary and reading the secondary; provides safer conditions for the operator on step-down transformers
  • Continuity test indicates open or loose (high resistance) terminal connections
  • DC test mode eliminates errors due to magnetic build up
  • Stores up to 10 primary/secondary nameplate voltages to use in comparing test results
  • Displays ratio, test current, winding polarity, and deviation from nameplate voltage or ratio
  • Stores up to 10,000 test results
  • DataView® software included which allows configuring the instrument, downloading stored measurements and printing of test results in a report format
  • Display warns of incorrect lead connection, reverse polarity, open and short circuits
VT/PT Ratio Range Auto-Ranging, 0.8000 to 8000.0:1
CT Ratio Range Auto-Ranging, 0.8000 to 8000
Accuracy Ratio<10 to 1: +/-0.2% of Reading, Ratio<=10 to1000 to 1: +/-0.1% of Reading, Ratio>1000 to 1: +/-0.2% of Reading, Ratio 5000 to 8000: +/-0.25% of Reading
Excitation Signal PT/VT Mode: 32Vrms maximum, CT Mode: 0 to 1A Auto Level, 0.1 to 5Vrms
Excitation Current Display Range: 0 to 1000mA, Accuracy: +/-2% of Reading +/-2mA
Excitation Frequency 70 Hz
Display LCD 16 Character, 2 line, Large format, LED Backlight, day/night visible
Measurement Method In accordance with IEEE Std C57.12.90 - 2006
Languages Supported English, Spanish, Franch, Italian, German, Portuguese
Power Source Two 12V, 1650mAH rechargeable battery packs
Battery Life UP to 10 hrs of continuous operation, low battery indication
Charging Time <4 hrs to full charge
Data Storage 10,000 tests
Date / Time Battery-backed, Real-time clock
Communication USB 2.0 compliant, optically isolated 115.2 KB
Software DataView analysis software included
Connections XLR connectors
Leads 15ft (4.6m), H & X shielded with color-coded alligator clips
Enclosure Heavy duty Polypropylene case, UL 94 V0 rated
Protection IP40 (Instrument lid open, IP53 (Instrument lid closed)
Dimensions 10.7 x 9.76 x 5.12" (272 x 248 x 130mm)
Weight 8.1 lbs (3.7 Kg)
Safety EN 61010-1; 50V CAT IV; Pollution Degree 2

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Last modified February 04, 2010

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