Chauvin Arnoux DTR 8510 Ratiometer

- Range of ratios (VT): Automatic: 0.8000 to 8,000:1
- Accuracy (VT):
+ Range of ratios 0.8000 to 9.9999: ±  0.2 % of reading
+ Range of ratios 10.000 to 999.99: ± 0.1 % of reading
+ Range of ratios 1000.0 to 4999.9: ± 0.2 % of reading
+ Range of ratios 5000.0 to 8000.0: ± 0.25 % of reading
- Range of ratios (TC): Autoranging: 0.8000 to 1000.0
- Accuracy (TC):  ± 0.5 % of reading
- Excitation signal: VT mode: 32 Vrms max CT mode: Auto level 0 to 1 A, 0.1 to 4.5 Vrms
- Excitation current display: Range: 0 to 1,000 mA; Accuracy: ± (2% R + 2 mA)
- Excitation frequency: 70 Hz
- Display: Alphanumeric LCD, 2 lines of 16 characters with adjustment of contrast and backlighting. Easy to read in both daytime and nighttime conditions
- Measurement method: According to IEEE Std C57, 12.90™ -2006 standard
- Power supply: Two rechargeable batteries: 12 V, NiMH, 1650 mAH
- Battery life: Up to 10 hrs in continuous operation, low-battery warning
- Battery charger: Universal input (90 to 264 Vrms), smart charger
- Charging time: < 4 hours for full charge
- Storage: 10,000 tests
- Date / time: Power supplied by dedicated battery, real-time clock
- Communication: USB 2.0, optical isolation, 115.2 kB
- Software: Delivered with DataView®analytical software
- Dimensions / Weight: 272 x 248 x 130 mm / 3.7 kg
- Connection: XLR connectors
- Leads: Screened H and X leads, length 4.6 m (15 ft),equipped with colour-coded crocodile clips
- Casing: Rugged polypropylene casing, UL 90 V0
- Vibrations: IEC 68-2-6 (1.5 mm at 55 Hz)
- Shocks: IEC 68-2-27 (30 G)
- Falls: IEC 68-2-32 (1 m
- Protection rating: IP 40 with cover open as per EN 60529; IP 53 with cover closed as per EN 60529
- Safety: EN 61010-1, 50 V CAT IV; pollution degree 2

State at delivery: a case containing: Delivered with a carrying bag containing 1 set of 4.6 m leads with crocodile clips, 1 external battery charger with mains power cable, 1 USB cable, 1NiMH battery datasheet, 1operating manual and DataView software on CD-Rom

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Description

Digital ratiometer for transformers

The DTR 8510 is a portable digital ratiometer for testing power, voltage and current transformers.

When connected to an uncoupled transformer, the DTR 8510 accurately measures the primary-to-secondary transformation ratio, while also indicating the polarity and excitation current.

The DTR 8510 is totally automatic and uses a test method which complies with the ANSI/IEEE standard. Users are not required to perform any calibration or balancing.

During each measurement, the DTR 8510 self-calibrates automatically and checks:

• Open circuits, windings, connections and cut-off circuits,
• Short-circuits (excessive value of excitation current),
• Incorrect connection of the test cables,
• Polarity reversals.

The measurements are displayed quickly and accurately.

Functions - Specifications

• Transformation ratio: from 0.8000:1 to 8,000:1 (power and voltage transformers) and from 0.8000 to 1,000.0 (current transformers) - Autorange function,
• Testing by excitation of the primary and reading of the secondary, in order to guarantee user safety,
• Display of alerts in the event of incorrect connection, reversed polarityn open circuits and short-circuits,
• Digital display – display of the ratios, winding directions - % deviation in relation to the rated values and excitation current. The bargraph indicates the progression of self-calibration and measurement,
• Storage of up to 10,000 measurement results in internal memory,
• USB connection and DataView PC software supplied as standard to set up the instrument, download and analyse the measurements and generate test reports.
• Power supply by NiMH rechargeable battery with external charger (battery life of 10 hours in continuous operation)
• IP53 protection
• IEC 61010 50V CAT IV safety
• Dimensions: 272 x 248 x 130 mm / 3.7 kg