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Electronic Measurement Solutions since 1968
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Digital Transformer Ratiometer Model 8500


Features

  • Designed for power transformers, VTs, PTs and CTs
  • Direct readings from 0.8000:1 to 1500.0:1
  • Display turns ratio, polarity and excitation current simultaneously
  • Dual power supply and operation: integrated rechargeable NiCD battery and AC supply
  • Display warnings of incorrect lead connections, reverse polarity, open and short circuits
  • Easy connection and test setup; no calibration or balancing required
  • Large dual line display with adjustable contrast and backlight ensures clear day/night visibility
  • Low battery indicator
  • Include 15 ft leads
Specification
Electrical
Ratio Range Auto-Ranging, 0.8000 to 1500.0:1
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
Excitation Signal PT/VT Mode: 44Vrms 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 Character, 20 x 2, Large format, LED Backlight, day/night visible
Measurement Method In accordance with ANSI/IEEE C57.12.90
Power Source Dual operation; rechargeable NiCD battery & 115 /230V, 50/60Hz
Batteries 12V, 5 x 2 NiCD packs, 1300mAH, Panasonic P-130SCR or equivalent
Charging Time Up to 10 hours continuous operation, May be used while recharging. Low battery LCD indication.
Line Fuse 115V: 1.0A, 5 x 20mm, slow acting, 230V: 0.5A, 5 x 20mm, slow acting,
Displayed Measurements True ratio; RMS excitation current, polarity
Displayed Messages Incorrect lead connections, H/X reversal (accidental step-up misconnection); Short (excess excitation current); Open circuit; Circuit continuity & low battery
Mechanical
Connections Cannon XLR connectors and large color-coded industrial clips
Leads 15ft, H x X color-coded, in carrying bag
Display Dual line alpha-numeric 3.875 x 0.875 " with contrast adjustment and backlight
Operating Temperature 32°C to 122°F (0 to 50 °C), 0 to 90% RH ( without condensation)
Dimensions 13 x 12 x 6 " (330 x 305 x 152 mm)
Weight 14lb (6.4Kg)

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Last modified August 07, 2009.

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