Sanwa HG561H, Instruction Manual, Page: 10 / 16

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1) What to measure
MΩ: Insulation resistance of low-voltage electric equipment
and equipment items.
2) Measuring ranges (Automatic range selection)
Test voltage Measuring
range
Accuracy Remarks
15 V
25 V
50 V
9.99 MΩ
21.0 MΩ
±(2 %rdg + 5 dgt)
Over 21.1 MΩ:
"
OL
" displayed
100 V
125 V
250 V
500 V
9.99 MΩ
99.9 MΩ
110. MΩ
Over 111 MΩ:
"
OL
" displayed
3) Measuring procedure
①
Set the MΩ function.
②
Set a test voltage.
③
Connect the alligator clip to the circuit to be measured
and the measurement probe too.
④
Press the test button.
⑤
Read the display or the LED level meter.
Note:
Make sure the test voltages you need are enabled. If the
voltages are not shown on the display, make the voltages
enabled in the test voltage selection mode again.
The instrument displays up to 3 digits with fixed decimal point.
Note:
If the power is turned off during the test voltage selection
mode, the selected voltages before the time will not be
reflected. The selection completes after
is indicated
on the display.
The selected test voltages are memorized into the
instrument, and only the selected voltages can be used
when the power is turned on again after being turned off.
How to read the LED level meter when the test voltage is
100 V, 125 V, 250 V, or 500 V.
Reading LED level meter
0.49 MΩ or under
0.50 MΩ ～ 0.99 MΩ
1.00 MΩ
～
4.99 MΩ
5.00 MΩ
～
9.99 MΩ
10.0 MΩ
～
19.9 MΩ
20.0 MΩ
～
49.9 MΩ
50.0 MΩ
～
99.9 MΩ
100. MΩ
～
110. MΩ
111. MΩ or over
Example of insulation resistance measurement
OFF