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Ideal for turns ratio, excitation current, and polarity of windings measurements in single and three-phase transformers, this ratio tester is built for harsh environments. With a unique design that allows for one-handed operations, this tester eliminates the need to kneel or bend down and speeds up testing times.
Ideal for turns ratio, excitation current, and polarity of windings measurements in single and three-phase transformers, this ratio tester is built for harsh environments. With a unique design that allows for one-handed operations, this tester eliminates the need to kneel or bend down and speeds up testing times.
Discontinued!
This product has been discontinued and is no longer available. There is no direct replacement. Don't worry, we have some options to help you find what you need:
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Features
Applications
| Excitation Voltage | 8 V rms for testing distribution or power transformers and PT's; 0.5, 1.5, or 8 V AC rms for testing CT's |
| Test Frequency | 55 Hz internally generated providing a universal 50/60 Hz test set |
| Excitation Current Range | 0 to 100 mA, 4-digit resolution |
| Turns Ratio Range | 0.8 to 20,000, 5-digit resolution |
| 0.8 to 20,000, 5-digit resolution | Normal or reversed |
| Current (rms) Accuracy | 5% rdg ±0.5 mA |
| Display Full Graphics | LCD module, adjustable back-lighting, wide temperature range, 128 x 64 dots (21 characters by 8 lines) |
| Temperature Range | -5 to 130°F (-20 to 55°C) |
| Measuring Time | Less than 5 seconds |
| Type of Power | 6 x standard "AA" (IEC LR-6) alkaline batteries |
| Battery Life | Up to 12 hours of field operation |
| Safety/EMC/Vibration | Meets the requirements of IEC-61010, CE and ASTM D999.75 |
| Dimensions | 9.5 x 4.5 x 1.9" (240 x 115 x 50 mm) |
| Weight | 2.8 lbs (1.3 kg) |
Click on a category to view a selection of compatible accessories with the Megger TTR20-1 Handheld Transformer Turns Ratio Tester.
| Excitation Voltage | 8 V rms for testing distribution or power transformers and PT's; 0.5, 1.5, or 8 V AC rms for testing CT's |
| Test Frequency | 55 Hz internally generated providing a universal 50/60 Hz test set |
| Excitation Current Range | 0 to 100 mA, 4-digit resolution |
| Turns Ratio Range | 0.8 to 20,000, 5-digit resolution |
| 0.8 to 20,000, 5-digit resolution | Normal or reversed |
| Current (rms) Accuracy | 5% rdg ±0.5 mA |
| Display Full Graphics | LCD module, adjustable back-lighting, wide temperature range, 128 x 64 dots (21 characters by 8 lines) |
| Temperature Range | -5 to 130°F (-20 to 55°C) |
| Measuring Time | Less than 5 seconds |
| Type of Power | 6 x standard "AA" (IEC LR-6) alkaline batteries |
| Battery Life | Up to 12 hours of field operation |
| Safety/EMC/Vibration | Meets the requirements of IEC-61010, CE and ASTM D999.75 |
| Dimensions | 9.5 x 4.5 x 1.9" (240 x 115 x 50 mm) |
| Weight | 2.8 lbs (1.3 kg) |
Click on a category to view a selection of compatible accessories with the Megger TTR20-1 Handheld Transformer Turns Ratio Tester.
