380385 V1.5 3/04

5

Operation

Powering the meter

Press the

ON button to turn the unit on. Press the OFF button to turn the unit off.

Insulation Resistance Measurements

Warning: The circuit under test must be completely de-energized and isolated before

making test connections.

1. After turning the unit on, the display will prompt the user

to select a test voltage (diagram at right).

2. Select the test voltage by pressing one of the preset

voltage buttons (

1KV, 2.5KV, 5KV, 10KV) or by pressing the Voltage Adjust buttons

(

500+, 500-) to step through the available test voltages in 500V steps.

3. The resistance range for the selected voltage is indicated on the dot matrix display as

shown above.

4. Press the

TEST START / STOP button again.

5. The display will prompt the user to connect the leads.

Press the

TEST START/STOP button to start testing.

6. The elapsed test time appears on the upper line (right

hand side) of the display. The resistance reading is shown on the upper left hand side

of the display. The lower line shows the test voltage in bargraph format (see diagram

at right).

7. The HOLD icon will appear in place of the bargraph

when the test is complete and the voltage has been

discharged.

WARNING: DO NOT REMOVE THE TEST LEADS BEFORE THE HOLD DISPLAY

APPEARS.

8. The meter automatically discharges the system at the end of the test.

9. The meter automatically powers down after 5 minutes.

The Enersave

Enersave

TM

mode conserves battery life by performing a relatively short test (10 seconds).

The Enersave

TM

mode is the default test mode. To bypass this mode and run a longer test

(100 seconds max), press and hold the

TEST button for 3 seconds when starting a test.

Bargraph Voltage Display

The bargraph represents the voltage present on the test leads as it rises, soaks, and

decays. The bargraph appears on the lower left of the dot matrix display during a test.

Automatic Under/Over Range Resistance Detect

If the display shows the message “LOW M

Ω”, the test should be interrupted immediately

by pressing the

TEST button. This message indicates that the insulation under test has

broken down and the meter is trying to inject a high potential onto a short circuit. If ‘HIGH’

appears, it is likely that the test configuration is open. Check the test set-up then test

again.

Elapsed Timer

The test duration is indicated on the display. This is particularly useful in determining

whether an insulating material under test will break down in a given amount of time.

Select Voltage:

250000M

Ω V = 5000V

Connect Leads . . . .

. . . . . . Press TEST

R=9.998M

Ω

6.8s

0> ██████

<500V