Features
- High accuracy, 0.5%, (up to 0.2% with compensation)
- Ideal for use with Elkor Technologies Inc. Power Meters:
- WattsOn Power Transducer
- WattsOn-Mark II Advanced Energy Meter
- Current Transformers for the i-Spy AC Current Transducer.
- Current Transformers for the i-Snail-X AC Current Transducer.
Product Description
High Accuracy (exceeding Revenue Grade), easy to install, ideal for energy mangement applications, as well as accurate metering using Elkor's Power Metering devices.
Unlike the standard 5A CTs, the MRA Current Transformers do not produce high voltage surge when opened . They generate a low energy mA output and no special protection and/or shorting blocks are required. Maximum open secondary voltage is clamped at about 7 V peak.
These CTs are UL listed for easy installation in the field.
Models and Dimensions
** Images not to scale **
Specifications
| MRA-75 | MRA-125 | MRA-2x3 | MRA-3x5 | |
| Primary Wire Window | 0.75" (19mm) |
1.29" x 1.69" (33x43mm) |
2.00" x 3.50" (50x90mm) |
3.15" x 4.75" (80x120mm) |
| Maximum Continuous Current (Amps AC) |
300A | 600A | 1500A | 2500A |
| Output @ Max Input (mA AC) | 40mA | 80mA | 200mA | 166.67mA |
| Turns Ratio | 7500:1 | 7500:1 | 7500:1 | 15000:1 |
| Insulation Class | 600V; 50-60Hz | |||
| Overload | 2 x Max Input for 5 Seconds | |||
| Uncompensated Accuracy (1% - 120%) | ± 0.5% (IEC 60044-1, ANSI C57.13-2008 class 0.5) |
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| Compensated Accuracy (1% - 120%) | ± 0.2% (ANSI C12.20 class 0.2) | |||
| Phase Shift | Less than 0.3° | |||
| Leads | AWG #22, 6' (1.8m), 600V | Terminal Block, includes AWG20 8' (2.4m) leads | ||
| Max Open Circuit Voltage | Output Clamped at 7Vac peak. | |||
| Temperature Range | -40°C to 55°C | |||
