15.7.2 Lock button available
If this option is on, you can use Hot key 2 during an insulation test to lock the insulation test on.
If it is off, you cannot lock insulation tests on.
1. Select the lock button using the right rotary knob.
2. Press Hot key 3 to turn lock button to ON or OFF.
3. Your choice is stored automatically.
15.7.3 Variable voltage
To change the test voltage of the VAR setting of the insulation test voltage option.
1. Select the lock button using the right rotary knob.
2. Press the green check button (Hot key 3) to enter the variable options screen.
3. Using the left and right arrow buttons (Hot keys 1 and 5) and the right rotary knob, set the three number dials to
the required voltage.
4. Press the green check button (Hot key 3) to accept the selection.
15.7.4 Insulation buzzer threshold (limit alarm)
The optional buzzer mode in insulation testing has a trigger resistance below which the buzzer will not sound. This
allows for quick testing when only audible confirmation the circuit insulation is above a given threshold is required,
rather than an absolute value. This threshold is called a limit alarm.
1. Select the insulation threshold option using the right arrow (Hot key 5).
2. Press the green check button (Hot key 3).
3. Turn the right-hand rotary knob to choose the insulation buzzer limit alarm threshold.
The choices are:
0.5 MΩ
1 MΩ
2 MΩ
3 MΩ
4 MΩ
5 MΩ
7 MΩ
10 MΩ
20 MΩ
50 MΩ
100 MΩ
200 MΩ
500 MΩ
1000 MΩ
4. When you have made your selection either press Hot key 3 to confirm it or wait three seconds for automatic
confirmation.
15.7.5 1000 V test
To reduce the risk of accidental circuit damage the 1000 V insulation test is disabled as default.
1. Select the 1000 V test option using the right rotary knob.
2. Press the green check button (Hot key 3) to enable or disable the 1000 V insulation option.
3. The setting is saved automatically.
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