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Author ：Iflowpower – Portable Power Station Supplier
Is the UPS power supply is normal, it is not easy to be clear and practical, only professional engineers can make actual testing. Then we can take a multimeter measurement? This is also a problem that everyone cares about. I will take a look at it, just as a reference.
Three ways to detect the UPS power supply in three ways: 1. Analog discharge method: according to battery capacity, such as 60AH, according to safety discharge standards, 0.1c, that is, one-tenth of capacity current, with 6 amps.
Making a high power resistance of 12 (V) 6 (a) = 2 (). Take a 20 ohm with a meter of 1,000 watts of electric furnace, then measure one tenth, make a tag, and reliably connect two battery connecting lines in the two outer ends of the mark. The multimeter is placed on the DC voltage probe and connected to both ends of the resistor.
Temporarily contact the battery positive electrode to connect the red probe cable and negative pole connection of the red probe for 10 seconds. If the voltage is kept above 10.8 volts, the battery is basically good.
2. Online Charging Measurement Method: When the uninterruptible power supply is charged online, each battery is measured. If there is a problem with high voltage, please remove the measurement key.
3. Online discharge measurement: UPS on the line on the line, cut off external AC power supply, power with battery. There is a problem with low voltage.
Removing key measurement. UPS power supply uninterruptible power supply: Quality judgment method 1. When identifying UPS uninterruptible power supply, you can distinguish from appearance.
First, it is observed whether the appearance is deformed, protruding, leakage, cleft, burst, and whether there is an oxidation leak at the threaded joint. 2. With load measurement, you can check the appearance.
The uninterruptible power supply is running in battery mode, it is necessary to carry a certain load. If the discharge time is shorter than normal discharge time, there is still no normal standby time after charging for eight hours, it can be judged that the battery aging. 3.
Measure the battery when measuring the battery with a multimeter, mainly measuring the end voltage of each battery in the battery pack. If the end voltage of one or more batteries is higher than the nominal voltage, it should be considered that the battery aging should be considered. 4.
When using commercial power, use a multimeter to measure. Measure the charging voltage of each battery end in the battery pack. If one or more battery charging voltages are significantly higher than other voltages, it can be determined that the battery is aging.
When judging, the total voltage of the battery pack can be measured.
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