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| Ratiometer |
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 | Top • Ratiometer
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Sku: 8500
Description
The DTR® Model 8500 is a portable digital transformer ratiometer designed for on-site testing of power, potential and current transformers. When connected to a non-energized transformer, the DTR® Model 8500 accurately
measures primary to secondary turns ratio, while simultaneously displaying polarity and excitation current value.
The DTR® Model 8500 is fully automatic and utilizes an ANSI/IEEE compliant test method. No user calibration, range selection, hand cranking or tedious balancing is required. At each measurement, the DTR® Model 8500
automatically self-calibrates, and checks for open windings/connections/circuits breakers, short circuits (excess excitation current), incorrect test lead placement and reverse polarity. Measurements are displayed quickly and accurately.
The DTR® Model 8500 is designed with operator safety in mind. Tests are performed at low voltage and, unlike other ratiometers, step-down excitation is employed. This test method, in conjunction with an integral H/X reverse protection circuit, guards against the generation of hazardous test voltages normally associated with transformer ratio measurement instruments.
A large, dual line alpha numeric LCD display with adjustable contrast and backlight guarantees day/night
readability. Power is supplied either by integral NiCd battery (included) or by AC line. Batteries are recharged automatically during AC operation.
Rugged and reliable, the DTR® Model 8500 is built into an attractive, impact-resistant sealed structural
polypropylene case designed to withstand the rigors of industrial and utility field use.
Built using highest-quality electrical and mechanical components, the DTR® Model 8500 sets the standard
in advanced design, engineering and workmanship, and will provide the user with years of accurate and reliable
measurements.
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