Chauvin Arnoux DTR 8500 Transformer Ratiometer

The Chauvin Arnoux DTR 8500 Transformer Ratiometer is a digital transformer ratiometer designed for on-site testing of power, voltage and current transformers. The CA DTR 8500 is fully automatic and is ideal for servicing and repairing transformers and can check winding ratios. When connected to a non-energised transformer  the DTR8500 is able to accurately measure both primary and secondary turns ratio while simultaneously displaying polarity and excitation current. All measurements are displayed quickly and accurately by the Chauvin Arnoux single-phase ratiometer. At each measurement the DTR 8500 automatically self-calibrates and checks for open windings, open connections, open circuit breakers, short circuits, incorrect test lead placement and reverse polarity. Operator safety is ensured by the Chauvin Arnoux 8500 as tests are performed at low voltage and, unique to the DTR 8500, step-down excitation is employed. Together with an integral H/X reverse protection circuit this digital transformer ratiometer guards against the generation of hazardous test voltages that are often apparent with transformer ratio measurement.

The C.A. DTR 8500 has a backlit LCD display with adjustable contrast for easy viewing in all light conditions. Power is supplied either via integrated NiCD batteries or an AC line. The batteries are automatically charged during AC operation. The Chauvin DTR 8500 is housed in a rugged and lightweight polypropylene case that can withstand the rigours of utility and industrial field use.

Chauvin Arnoux DTR 8500 features
► Designed for power transformers, VTs, PTs and CTs.
► Direct turns ratio readings from 0.8000:1 to 1500.0:1
► Displays turns ratio, polarity and excitation current simultaneously.
► Continuity test
► Dual power supply operation.
► 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, backlit LCD display.
► Complies with ANSI/IEEE standards.
► Low battery indicator.
► Includes 15ft leads.

► Chauvin Arnoux DTR 8500 Transformer Ratiometer
► 2 x 15ft H & X measurement leads
► Power supply cable
► Accessories bag

► Transformation ratio: Auto-ranging, 0.8000:1 to 1500.0:1
► Accuracy: <10:1 ±0.2%, 10-1000:1 ±0.1%, >1000:1 ±0.2%
► Excitation signal (PT/VT mode): 44Vrms maximum
► Excitation signal (CT mode): 0-1A auto level, 0.1 - 5Vrms
► Excitation current display: Range 0-1000mA, Accuracy ±2% of reading ±2mA
► Excitation frequency: 70Hz
► Power supply: Rechargeable NiCD battery & 230/115V 50/60Hz mains supply.
► Batteries: 2 x NiCD 12.5 V batteries, 1300mA/h
► Battery life: Upto 10 hours continuous.
► Charging time: Approx 14 hours.
► Leads: 15ft H & X terminated by crocodile clips.
► Compliance: IEC 61010-1, CAT III 300V
► Dimensions: 330 x 305 x 152mm
► Weight: 6.4kg