AEMC 2136.55 Digital Transformer Ratiometer DTR® Model 8511 (110/220V)
Model Number: AEM213655
Precision, Accuracy, and Confidence in Every Test
The DTR® 8511 is the next-generation digital transformer ratiometer, engineered to make transformer testing faster, safer, and more reliable than ever. Building on the proven performance of the DTR® 8510, this enhanced model introduces modern upgrades for the field—combining rugged portability with advanced measurement technology.
Designed for Field Technicians
No hand cranking. No calibration. No wasted time.
The DTR® 8511 was built for fast, accurate, and hassle-free testing of transformers (power, VT/PTs, and CTs). With its brighter display, ergonomic design, and built-in safety checks, you’ll have confidence in every result.
Why Choose the DTR® 8511?
- Wide Ratio Range - Accurately measure transformer ratios up to 8000:1 for VT/PTs and 1000:1 for CTs.
- High Precision - Advanced low-voltage step-down technology ensures repeatable, reliable results.
- Automatic Testing - Fully automatic cycles check for lead reversal and open circuits—no manual balancing required.
- Built-In Continuity & Deviation Checks - Instantly compare measured values to stored nameplate data for clear pass/fail results.
- Rugged & Field-Ready - Lightweight IP53-rated design with a bright backlit display and oversized test button for easy use—even with gloves.
- Flexible Power Options - Operates on rechargeable NiMH batteries, USB-C, or 12 VDC supply.
- Large Storage Capacity - Save up to 9,801 test results for recall and reporting.
- Seamless Data Management & Connectivity - Connect directly to your PC via the isolated USB interface to manage results, configure nameplate values, and generate professional reports with the included DataView® software and DTR® Control Panel.
Proposition 65 Warning
⚠️ WARNING: This product can expose you to chemicals, including Bisphenol A, Styrene, Acrylonitrile, 1,3-Butadiene, Ethylbenzene, Nickel, Carbon, and Lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Introducing the AEMC® Digital Transformer Ratiometer Model 8511
Below are a series of videos to help you get acquainted with the new DTR 8511 including an introductory video, an unboxing video covering the various accessories that come with the DTR 8511, and a comparison of the DTR 8511 versus the DTR 8510.
| TECHNICAL SPECIFICATIONS 1 | ||
| Catalog # | 2136.55 | |
| MEASUREMENTS | ||
| VT / PT Ratio Range | Auto-Ranging 0.8000:1 to 8000.0:1 | |
| VT / PT Accuracies* | Ratio 0.8000 to 9.9999 ± 0.2 % of Reading Ratio 10.000 to 999.99 ± 0.1 % of Reading Ratio 1000.0 to 4999.9 ± 0.2 % of Reading Ratio 5000.0 to 8000.0 ± 0.25 % of Reading |
|
| Excitation Current | Up to 2 A | |
| CT Ratio Range | Auto-Ranging 0.8000 to 1000.0 | |
| CT Accuracy* | ± 0.5 % of Reading | |
| Output Voltage (VT / PT) | 30 V @ 64 Hz | |
| Output Voltage (CT) | 2 V @ 64 Hz | |
| RECORDING | ||
| Data Storage | 9801 measurements | |
| OTHER FEATURES | ||
| Communication | USB Type-A to Type-C USB 2.1 | |
| Software | DataView® included, free App for Android™ | |
| Languages Support | English,Spanish,French,Italian,German,Portuguese | |
| Display | LCD 20 characters x 4 line display | |
| Powered from phase voltage | Phase Power Adapter (Cat. #2137.90) | |
| Power Supply | USB Type-C and 12 VDC charger | |
| Measurement Method | In accorance with IEEE Std. C57.12.90TM | |
| Buttons | 6 total buttons (One to start testing and five for navigation) | |
| Battery Life | 500 VT / PT Tests | |
| Battery Charge Time1 | 10 h | |
| Weight | 7.1 lbs (3.2 kg) | |
| SAFETY AND MECHANICAL | ||
| Safety Compliance | IEC 61010-2-030, IEC 61326-1, IEC 60529, IEC 60068-2-6, IEC 60068-2-27, IEC 60068-2-31, Pollution 2 | |
Note 1: Refer to the user manual for complete technical specifications
* : Reference Condition: (23 ± 5) ºC, (50 to 70) % RH, full battery charge, no external fields or noise.
