Insulation Test; Measuring Voltage; Measuring Resistance - Velleman DCM266L Manual Del Usuario

3.2 Insulation test

(Option 500V insulation tester unit (not available in France and Benelux market))
1. Connect the insulation test unit V Ω, COM, EXT three bananaplugs to the
clamp meter V Ω, COM, EXT.
2. Set the rotary switch of the clamp meter at 2000MΩ position.
3. Set the insulation tester unit range switch to the 2000MΩ position.
4. Use the insulation tester unit of the test leads connect its L, E input connect to
being tested installation's. ( Test installation's must be power OFF.)
5. Set the insulation tester power switch to the ON position.
6. Depress the PUSH 500V push-push switch, the 500V on red LED lamp will
light. Clamp meter display reading is the insulation resistance value. If the
reading is below 19MΩ, change clamp meter and insulation tester unit to
20MΩ range, can be increase the accuracy.
7. If the insulation tester unit is not used, the power switch must shift to power
OFF position, and the test leads must leave the E, L input connect. That can
be increase battery life and prevent electrical shock hazard.

3.3 Measuring voltage

1. Connect the black test lead to the COM jack and the red test lead to the V Ω
jack.
2. Set the rotary switch at the desired DCV or ACV range position and connect
test leads across the source or load under measurement.
The polarity of the red lead connection will be indicated along with the voltage
value when making DC voltage measurement.
3. When only the figure " 1" is displayed, it indicates overrange situation and the
higher range has to be selected.

3.4 Measuring resistance

1. Connect the black test lead to the COM jack and the red test lead to the V Ω
jack.
2. Set the rotary switch at desired Ω position and connect test leads across the
resistor under measurement.
NOTE :
1. If the resistance being measured exceeds the maximum value of the range
selected or the input is not connected, an overrange indication " 1" will be
displayed.
2. When checking in-circuit resistance, be sure the circuit under test has all
power removed and that all capacitors have been discharged fully.
DCM266L
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