BT51 - Measuring equipment Megger - Free user manual and instructions
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| Product type | Battery tester |
| Brand | Megger |
| Model | BT51 |
| Category | Measuring equipment |
| Dimensions (L x W x H) | 200 mm x 100 mm x 50 mm |
| Weight | 0.5 kg |
| Power supply | 4 AA batteries or optional mains adapter |
| Main functions | Measurement of internal battery resistance, DC voltage, temperature |
| Resistance measurement range | 0.1 mΩ to 1000 Ω |
| Voltage measurement range | 0 V to 60 V DC |
| Temperature measurement range | -10 °C to 60 °C |
| User interface | Backlit LCD screen, function keys |
| Data storage | Internal (up to 1000 measurements) |
| Connectivity | USB for data transfer |
| Maintenance and cleaning | Wipe with a soft, dry cloth; do not use solvents |
| Safety instructions | Do not exceed 60 V; use appropriate fuses; disconnect cables before changing batteries |
| Spare parts and repairability | Test cables, fuses, set of batteries; repair by approved center |
| Standards | CE, IEC 61010 |
| Included accessories | Kelvin clips, USB cable, user manual |
| Warranty | 1 year |
Frequently Asked Questions - BT51 Megger
How to measure the internal resistance of a battery with the BT51?
Connect the Kelvin clips to the battery terminals. Select the Internal Resistance mode. The device displays the measurement in milliohms.
What is the maximum voltage the BT51 can measure?
The BT51 measures up to 60 V DC. Do not exceed this value to avoid damaging the device.
How to transfer data to a computer?
Use the provided USB cable and Megger Data Transfer software (downloadable from the website). The device appears as a removable drive.
Can I use the BT51 on lithium batteries?
Yes, the BT51 is suitable for all batteries (lead-acid, lithium, NiMH, etc.) within the voltage range 0-60 V.
How to replace the batteries of the BT51?
Disconnect all cables. Open the battery compartment at the back. Replace the 4 AA batteries respecting polarity. Close the cover.
What to do if the screen does not turn on?
Check the batteries. If they are low, replace them. If the screen remains off, contact after-sales service.
Is the BT51 factory calibrated?
Yes, each BT51 is factory calibrated. A calibration certificate is included. It is recommended to recalibrate every 12 months.
What is the measurement accuracy of internal resistance?
The accuracy is ±1% of reading ±0.1 mΩ on the range 0.1 mΩ to 1000 Ω.
How to clean the BT51?
Use a soft, dry cloth. Do not use chemicals or abrasives that could damage the casing.
Where to find the complete user manual?
The manual is available for free download on the website notice-facile.com or on the official Megger website.
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USER MANUAL BT51 Megger
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Product information
Brand : Megger
Model : BT51
Category : Measuring equipment