Peacefair Pzem-051 Manual -
). If either your voltage or current readings are inaccurate due to improper wiring, the power reading will also be incorrect. Verify all wire terminations are clean and tight. To help clarify your installation, let me know:
Connect the positive (+) and negative (-) terminals of your battery or power source to the voltage measurement terminals on the back of the meter.
| Parameter | Range | Resolution | Accuracy | | :--- | :--- | :--- | :--- | | | AC 80V – 260V | 0.1V | ±0.5% | | Current | 0 – 100A | 0.01A (0-10A), 0.1A (10-100A) | ±0.5% | | Active Power | 0 – 20kW | 0.1W – 10W | ±0.5% | | Energy | 0 – 9999.9kWh | 0.001kWh – 1kWh | ±0.5% | | Operating Frequency | 45Hz – 65Hz | 0.1Hz | | | Data Interface | TTL Serial (RS485 on some variants) | | | peacefair pzem-051 manual
: While the manual may suggest the positive line, many community resources show the shunt is correctly connected inline with your main negative cable , coming from your battery to your load (e.g., an inverter). Connect the main negative cables to the shunt's large screws . The correct wire must go to the "load side" of the shunt versus the "battery side".
Incorrect wiring will damage the meter instantly. You must use the included 100A/75mV current shunt. To help clarify your installation, let me know:
You can set high and low voltage limits that will cause the backlight to flash if exceeded: РКС Компоненти - РАДІОМАГ Enter Setting Mode: Long press the key until the screen displays , then release. Adjust Values:
Long press the key for 5 seconds to store the setting and exit the menu. 5. Troubleshooting and FAQ The correct wire must go to the "load
After setting the high and low thresholds, for 5 seconds to save and exit ("PASS" will appear). D. Setting Current Range (Shunt Selection)

