Uni-T UT512 [7/10] The use of power adaptor
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Uni-T UT512 [7/10] The use of power adaptor

Uni-T UT512 [7/10] The use of power adaptor
Model UT512: OPERATING MANUAL
7
Press and hold TEST button for 1 second to carry out continuous measurement. Output insulation resistance testing voltage, TEST button light up, blinks on
every 0.5 seconds.
Press TEST button to close the insulation resistance measurement voltage when measurement is completed. TEST button lights off, disappears. The LCD
shows the current insulation resistance measurement value.
b) Timed Measurement
Press TIME button to select timed measurement mode, the LCD displays TIME 1 and symbols.
Press and buttons to set the time (00:10~15:00). Within 1 minute, the time increment or decrement by every 10 seconds. Afterward, the time
increment or decrement by every 30 seconds.
Then press and hold TEST button for 2 second to carry out timed measurement. TIME 1 and are displayed and blinked on the LCD on every 0.5 seconds.
When the set time is reached, the insulation resistance measurement voltage will be closed and the measurement will be automatically stopped. The LCD
displays the insulation resistance reading.
c) Polarization Index (PI) Measurement
Press TIME button to select timed measurement mode, the LCD displays TIME 1 and symbols.
Press and buttons to set the time (00:10~15:00). Within 1 minute, the time increment or decrement by every 10 seconds. Afterward, the time
increment or decrement by every 30 seconds.
Press TIME button again. TIME 2, PI and symbols appear on the LCD.
Press and buttons to set the time (00:15~15:30). Within 1 minute, the time increment or decrement by every 10 seconds. Afterward, the time
increment or decrement by every 30 seconds.
Then press and hold TEST button for 2 seconds to carry out timed measurement.
TIME 1 and are displayed and blinked on the LCD on every 0.5 seconds before TIME 1 set time is reached.
TIME 2 and are displayed and blinked on the LCD on every 0.5 seconds before TIME 2 set time is reached.
When the two set time are reached, the insulation resistance measurement voltage will be closed and the measurement will be automatically stopped. The LCD
displays the polarization index reading.
Press , to set through the polarization index, TIME 2 insulation resistance reading and TIME 2 insulation resistance reading.
Information:
PI = 3 minutes ~10 minutes reading / 30 seconds ~1 minute reading
PI 4 or more 4~2 2.0~1.0 1.0 or less
Standard The best Good Warning Bad
d) Compare Function
Press COMP button to select compare feature. COMP symbol displays on the LCD..
Press and buttons to set the compare value
Below is the list in sequence of the compare value:
10MΩ, 20MΩ, 30MΩ, 40MΩ, 50MΩ, 60MΩ, 70MΩ, 80MΩ, 90MΩ,
100MΩ, 200MΩ, 300MΩ, 400MΩ, 500MΩ, 600MΩ, 700MΩ, 800MΩ, 900MΩ
1GΩ, 2GΩ, 3GΩ, 4GΩ, 5GΩ, 6GΩ, 7GΩ, 8GΩ, 9GΩ, 10GΩ
20GΩ, 330GΩ, 40GΩ, 50GΩ, 60GΩ, 70GΩ, 80GΩ, 90GΩ, 100GΩ
Press and hold TEST button for 2 seconds to carry out the measurement.
The NG symbol will display if the insulation resistance value is smaller than resistance value. Otherwise GOOD symbol will be displayed.
The Use of Power Adaptor
The use of power adaptor, see figure 6
Figure 6. The Use of Power Adaptor
1. Open the side safey shutter, then you will see there is a power adaptor input terminal.
2. Make sure the Meter is power off and Insert the UT512 power adaptor to the input terminal.
3. It is highly recommeded to take out all the batteries when you are using the power adaptor.
4. Make sure the Meter is power off when you disconnect the UT512 power adaptor from the Meter.
5. It is highly recommeded to use Uni-Trend supplied UT512 power adaptor to avoid dangerous.
USB Interface
Connecting the USB interface, see figure 7
Figure 7. USB Interface Connection
1. Install the included software, the installation guide can be seen from the CD.
2. Open the side safety shtter, then you will see there is a USB port.
3. Insert the included USB cable to the Meter’s USB port and the other end to the computer.

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