ZXFC MOV SPD TESTER
- 5 -
After clicking the "test" button, the test voltage starts at the rate of 100V/s and step up from the voltage preset
value. After the green light is on:
If the buzzer does not alarm, the display is the ignition voltage of measured discharge tube in the
measurement range.
If the buzzer alarms, the display is the upper limit of the measurement range. At this time, the ignition voltage
Vsdc value of the tested product is greater than the upper limit of the measurement range (upper limit range)
and no ignition. Increase the "upper limit of test range" and repeat the test again.
The green indicator lighting up time along with the value display lasts for about 2 seconds, and then revert to
the preset state.
When the green indicator light is on, remove the measured discharge tube and wait the preset voltage is
restored then make the next test.
Continuous measurement
Turn single / continuous to low position to start continuous measurements
Self-check and others
A) Varistor/MOV 1mA value test
Select varistor / discharge tube to varistor, open high voltage, preset voltage to above 10V, short circuit "+"
“-”ends, display should be "000", long press "display conversion" key, display should be "1000", otherwise it
indicates the instrument has problems, please contact the after sale personnel in time.
B) examination of the 0.75U1mA value of the varistor test
Make the test ends open circuited and press test key, the display screen should show the upper limit of the
range. When the green light is on, press "display conversion" key, the display should be 0.75 times of the upper
limit of the range.
C) in the process of testing, long press "display conversion” to display the value under 1mA (1000uA) test
condition during U1mA measurement, or the value of 0.75U1mA test condition during I0.75U1mA
measurement.
Others
Use voltage preset and range adjustment function the instrument can be used as 1999V/1mA DC stablized
power supply and 1mA constant current source (the instrument constant output 1mA test current when the
load current reaches 1mA). With the use of "display conversion" key, the value of load voltage and current (V/I
characteristics) can be measured.
3. completion of the test
