CT Ratio/Burden Tester (1047)
Accurately verify CT performance in the field—quickly identify lost revenue opportunities.
TESCO’s 1047 CT Ratio/Burden Tester helps utility field technicians identify critical issues in current transformer installations without disrupting service. From installation errors and incorrect CT ratios to high resistance connections or open circuits, the 1047 provides a fast, in-service testing solution that helps protect against lost revenue.
This compact, rugged unit displays real-time values for both primary and secondary CT current, calculates the ratio, and stores results for later download. The built-in auto burden scan and Demag functions provide deeper insight into installation health—making this a must-have for accurate metering and diagnostics.
Description
Key Features
- Lightweight, handheld, and easy to operate
- Works with any CT (up to 20A secondary current)
- Measures and displays CT primary/secondary current and ratio
- Auto burden scan to assess installation quality
- Built-in Demag feature
- Pass/Fail indication for fast field evaluation
- Internal memory stores up to 500 test results
- Rechargeable battery – up to 10 hours of operation
- PC app included for test result upload and review
Included Accessories
- Current Cable with Test Plug (Cat. J-1044-50T)
- Soft Carrying Case (Cat. 1046)
- Battery Charger
Specifications
| Parameter | Value |
|---|---|
| Current Range | 0.1 – 20A (20A max), ±0.25% ± 2 LSD |
| Burden Values | 0.1, 0.2, 0.5, 1.0, 2.0, 4.0, 8.0 Ohms |
| Internal Battery | Rechargeable; 10 hours per full charge |
| Operating Temp | 0-100°F |
| Memory Capacity | Stores up to 500 test results |
| Dimensions | 7.5″ x 3.75″ x 4.25″ |
| Weight | 2.5 lbs |
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