Description: 1. Test voltage: DC 3-1500V 2. Voltage accuracy: ±4% (the three gears of the accuracy guarantee range are 3-20V, 20-200V, 200-1500V) 3. Leakage current range: 0－2mA 0－20mA 0－100mA 4. Display mode: full digital display 5. Volume: 220 x 210 x 75mm 6. Weight: about 3.5KG 7. Power consumption: 20W 8. Power source: 220V±20% Instructions Note that if the withstand voltage is greater than (1) Electrolytic capacitor withstand voltage measurement: Press the "ON" button of the power switch of the instrument, and select the voltage range switch appropriately according to the nominal voltage on the capacitor (such as 100uf/25V capacitor, select the 3-200V gear, and adjust the voltage to The nominal voltage is about 25V, press the current switch key "0-200mA", insert the measured capacitor into the jack, positive to positive, raise the "IV" switch key, and press the "Measure" key again, the voltage will start to rise. The larger the capacity, the slower the rise. When the voltage rises slowly or after it stabilizes, the reading on the voltmeter is the withstand voltage value of the capacitor. (2) Capacitor leakage current measurement: According to the size of the capacitance, select the current range key. The larger the capacitance, the greater the current range selection. Choose the voltage key appropriately (such as 470uf/50V capacitor), and select "3-200V" Adjust the voltage to 50V, select the "0-20mA" button for the current range, press the "IV" button, and then press the "Measure" button. How much leakage current does a good capacitor have? For reference only: paper capacitors, mica capacitors, polyester capacitors, polyester capacitors, etc., generally show no leakage current, electrolytic capacitors below 50uf should show less than 25uA leakage current, 50-500uf show less than 50uA leakage current, The leakage current of 500-1000uf is lower than 100uA, and the leakage current of 1000-10000uf is lower than 500uA. (3) Voltage regulator tube measurement: select the voltage range key, from low gear to high gear, current gear select 0-2mA, lift the "IV" button, insert the regulator tube into the jack, the positive pole of the tube is negative, the negative pole is positive, Press the "Measure" button again, adjust the voltage, observe the ammeter, it should display about 1mA, and the reading on the voltmeter is the steady voltage value of the tube. (4) Transistor and diode withstand voltage measurement: select the voltage range key, from high to low, the current key selects 0-2mA, the "IV" key is lifted, the tested tube is inserted into the jack, the diode positive electrode is negative, and the negative electrode is negative. Positive, the collector of the NPN transistor is positive and the emitter is negative. Press the "Measure" button to adjust the voltage. If there is a value on the ammeter, the reading on the voltmeter is the withstand voltage value of the tube. According to the technical parameters of the electrolytic capacitor, the leakage current uA of the capacitor should not exceed Ib=KCU at +20℃ ±5℃. Ib is the leakage current uA, C is the nominal capacitance uF, U is the rated DC working voltage, and K is the coefficient +20℃±5℃, which is 0.03. Generally, the capacitance is not more than 5 times the calculated value. The leakage current of aluminum electrolytic capacitors should not be greater than 3 times of the calculation formula (Ib=KCU) at room temperature.
Price: 162.99 USD
Location: CN
End Time: 2024-08-31T16:02:02.000Z
Shipping Cost: 76.99 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Unbranded
Type: Current Tester
Display Type: Digital Only
Origin: Mainland China
Certification: CE
MPN: DOES NOT APPLY
DIY Supplies: ELECTRICAL
