The AEMC DTR 8510 Digital Transformer Ratiometer is a portable digital transformer ratiometer designed for on-site testing of power, potential and current transformers. No user calibration, range selection, hand cranking or tedious balancing is required. At each measurement, the DTR automatically self-calibrates and checks for open windings/connections/circuit breakers, short circuits (excess excitation current), incorrect test lead placement, and reverse polarity. Measurements are displayed quickly and accurately.
Features
- 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
Applications
- Power transformers
- Potential transformers
- Current transformers
Specifications:
VT/PT Ratio Range: Auto-Ranging 0.8000:1 to 8000:1
CT Ratio Range: Auto-Ranging 0.8000 to 1000.0
Accuracy*: Ratio <10 to 1: ±0.2% of Reading
Ratio 0 to 1000 to 1: ±0.1% of Reading
Ratio >1000 to 1: ±0.2% of Reading
Ratio 5000 to 8000.0: ±0.50% of Reading
Excitation Signal: VT/PT Mode: 32Vrms maximum
CT Mode: 0 to 1A Auto Level, 0.1 to 5Vrms max.
Excitation Current Display: Range: 0 to 1000mA; Accuracy: ±2% of Reading ± 2mA
Excitation Frequency: 70Hz
Measurement Method: In accordance with ANSI/IEEE C57.12.90-2006
Display: LCD 16 character, 2 line, large format, LED backlight, day/night visible
Languages Supported: English, Spanish, French, Italian, German, Portuguese
Communication: Optically isolated USB 2.0
Data Storage: Stores up to 10,000 complete measurements
Power Source: Rechargeable 12V NiMH battery (included)
External Charger: 90/240V, 50/60Hz (smart charger)
Battery Life: Up to 10 hours continuous operation;
May not be used while recharging; Low battery LEP/LCD indication
Charging Time<4 hours
