The AEMC Instruments Model 8511Â is a portable digital transformer ratiometer designed for on-site testing of power, potential, and current transformers. It’s used to measure the turns ratio of these transformers, which is a crucial parameter for assessing their condition and performance.
Benefits:
Key Features:
Specifications:
Applications:
Resources:
Benefits:
Benefits of using the AEMC Model 8511:
- Improved Safety: The device uses a low-voltage measurement technique, which enhances operator safety.
- Reduced Testing Time: The automatic operation and fast measurement speed minimize testing time.
- Increased Accuracy: The use of an ANSI/IEEE compliant test method and automatic calibration ensures accurate results.
- Enhanced Reliability: The rugged design and data storage capabilities contribute to the reliability of the testing process.Â
Key Features:
Here’s a breakdown of its key features and functions:
- Accurate Turns Ratio Measurement: The Model 8511Â precisely measures the ratio of primary to secondary turns in transformers. This is done by applying a test voltage to the primary winding and measuring the voltage induced in the secondary winding.
- Simultaneous Display of Polarity and Excitation Current: Along with the turns ratio, the device also displays the polarity of the transformer windings and the excitation current. This provides a more comprehensive understanding of the transformer’s behavior.
- Automatic Operation: The Model 8511Â is fully automatic, eliminating the need for manual adjustments and calculations. This simplifies the testing process and reduces the risk of errors.
- ANSI/IEEE Compliant: The device uses an ANSI/IEEE compliant test method, ensuring accurate and reliable results.
- Portable and Rugged: Designed for field use, the Model 8511Â is portable and built to withstand harsh environments.
- Data Storage and Analysis: The device can store test results for later analysis and reporting. This is helpful for tracking transformer performance over time and identifying potential issues.
Specifications:
| 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 VDCÂ 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 | |
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Applications:
The AEMC Model 8511 is used in various applications, including:
- Testing power transformers in substations and power plants
- Evaluating potential transformers (PTs) and current transformers (CTs) in metering and protection systems
- Commissioning new transformers
- Performing routine maintenance on existing transformers
Resources:
