TTR20 - Measurement Megger - Free user manual and instructions
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| Product Type | Transformer Turns Ratio Tester |
| Brand | Megger |
| Model | TTR20 |
| Category | Measurement |
| Dimensions | 318 x 274 x 150 mm |
| Weight | Approximately 4.5 kg |
| Power Supply | 100-240 V AC, 50/60 Hz |
| Test Current | Up to 20 A |
| Turns Ratio Range | 0.8:1 to 50,000:1 |
| Accuracy | ±0.1% of reading |
| Measurement Functions | Turns ratio, excitation current, voltage, phase angle |
| Display | LCD with backlight |
| Memory | Internal storage for test results |
| Interface | USB for data transfer |
| Safety Standards | IEC 61010-1, CAT III 600 V |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -20°C to 70°C |
| Humidity | Up to 90% non-condensing |
| Maintenance | Keep clean, store in dry environment, calibrate annually |
| Spare Parts | Test leads, fuse, power cable |
| Reparability | Serviceable by qualified personnel |
| Accessories Included | Test leads with clips, power cord, user manual |
Frequently Asked Questions - TTR20 Megger
How do I perform a turns ratio test with the Megger TTR20?
Connect the test leads to the transformer terminals, select the desired test parameters, and press the Test button. The device will automatically measure and display the turns ratio, excitation current, and voltage.
What is the accuracy of the TTR20?
The TTR20 offers an accuracy of ±0.1% of the measured reading for turns ratio.
Can the TTR20 measure excitation current?
Yes, the TTR20 measures excitation current along with turns ratio and voltage.
What power supply does the TTR20 require?
The device operates on a universal input of 100-240 V AC, 50/60 Hz.
How do I transfer data from the TTR20 to a PC?
Connect the TTR20 to a PC via the USB port on the device. Use Megger's software to download and analyze test results.
What safety precautions should I take when using the TTR20?
Always ensure the transformer is de-energized before connecting test leads. Follow the safety guidelines in the user manual, and wear appropriate PPE.
How do I maintain the TTR20?
Keep the device clean and dry, store it in a protective case, and have it calibrated annually by an authorized service center.
What accessories are included with the TTR20?
The package includes test leads with clips, a power cord, and a user manual. Additional accessories can be purchased separately.
What is the temperature range for operating the TTR20?
The TTR20 operates in temperatures from -10°C to 50°C with non-condensing humidity up to 90%.
How do I replace the fuse in the TTR20?
Disconnect the device from power, remove the fuse holder located near the power inlet, and replace the fuse with one of the same rating (2 A, 250 V AC).
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USER MANUAL TTR20 Megger
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Product information
Brand : Megger
Model : TTR20
Category : Measurement