UNI-T UT512 Spezifikationen PDF herunterladen (Seite 6)

Model UT512: OPERATING MANUAL

 Press again to exit Load feature.

 Load feature can only be used when there is no high voltage output.

▲

▲▲

▲

 When the insulation resistance measurement has no testing voltage output,

press to select one voltage range up.

 Under load mode: press to recall the previous stored value.

▼

▼▼

▼

 When the insulation resistance measurement has no testing voltage output,

press to select one voltage range down.

 Under load mode: press to recall the next stored value.

 When set the timer duration for the measurement of insulation resistance or

polarization index, press to decrement the time. The maximum length of time

is 15 minutes and 30 seconds, the Meter will automatically carry out

measurement.

 When compare feature measuring insulation resistance, press to decrement a

resistance comparing value.

 After polarization index measurement, press to display polarization index,

TIME 2 insulation resistance value and TIME 1 insulation resistance value in

sequence.

 When set the timer duration for the measurement of insulation resistance or

polarization index, press to increment the time. The maximum length of time

is 30 minutes and 30 seconds, the Meter will automatically carry out

measurement.

 When use the compare feature measuring insulation resistance, press to

increment a resistance comparing value.

 After polarization index measurement, press to display polarization index,

TIME 2 insulation resistance value and TIME 1 insulation resistance value in

sequence.

USB  Press once to start the data transferring to the computer via USB, USB symbol

shows on the display.

 Press again to stop the data transferring to the computer via USB, USB

symbol disappears.

COMP

Set a pass / fail limit for insulation tests. The default value is 10MΩ

TIME

Pres to step through continuous measurement, timed measurement and polarization

index measurement in sequence.

TEST

Press to stop or start an insulation resistance test

Press to initiate insulation resistance measurement

DCV

Press to initiate DC voltage measurement

ACV

Pres to initiate AC voltage measurement

Measurement Operation

Below section explains how to make measurements.

Press and hold ON/OFF to turn on the Meter, press again to turn off the Meter. The Meter default range is 500V insulation resistance continuous measurement when turning

on.

Measuring Voltages

Figure 4. Voltages Measurement

Operating Catuion

 To avoid harms to you or damages to the Meter, please do not attempt to measure voltages higher than 600V or 600V rms, although readings may be

obtained.

 Special care should be taken when measuring high voltage.

To measure voltages, set up the Meter as Figure 4 and do the following:

1. Press DCV or ACV button to select DC voltage or AC voltage measurement

2. Insert the red and green test lead into the tested circuit.

3. When measuring DC voltage, if the red test lead is negative voltage, “-“ symbol will show on the display.

Note

 When voltage measurement has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads away from the

input terminals of the Meter.

Measuring Insulation Resistance

Figure 5. Insulation Resistance Measurement

Operating Caution

 When performing insulation resistance tests, remove all power from the circuit to be measured and discharge all the power.

 Operating the Meter must be very careful as it outputs dangerous voltage during measurement. Must make sure the tested object is firmed clipped, hands

are away from the clips, then press TEST button to put high voltage.

 Do not short circuit the testing leads during high voltages output or test insulation resistance after high voltages output. This kind of incorrect operating

may cause sparking and fire, which damages the Meter and harms to you.

 Do not measure over 10 seconds when:

500V measure resistance lower than 2MΩ

1000V measure resistance lower than 5MΩ

1500V measure resistance lower than 8MΩ

2500V measure resistance lower than 10MΩ

To measure insulation resistance, set up the Meter as Figure 5 and do the following:

1. Press IR button to select insulation resistance measurement.

2. When there is no testing voltage output, press ▲ and ▼ button to select voltages of 500V, 1000V, 2500V or 5000V.

3. When performing insulation resistance tests, remove all power from the circuit to be measured and discharged all the power.

4. Insert the red test lead into the LINE input terminal and the black test lead into GUARD input terminal.

5. Connect the red and black alligator clip to the circuit to be measured, negative voltage output from LINE terminal.

6. Choose below insulation resistance measurement mode.

a) Continuous Measurement

 Press TIME button to select continuous measurement mode, there is no timer icon on the LCD.

1 2 3 4 5 6 7 8 9 10

Kommentare zu diesen Handbüchern

Keine Kommentare

UNI-T UT512 Spezifikationen Seite 6

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Multimeter UNI-T UT512