Megger MOM2, Руководство пользователя

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BD0333FE ZP-BD03E MOM2 29
5 OPERATING INSTRUCTIONS
5.7 Measurement using P/F
and I min
In this example LOG is set to OFF.
1]
Read the section 5.1 General instructions.
2]
If applicable, connect the ground cable (pro-
tective earth).
3]
Make the desired settings in the SET options.
Select
P/F and enter desired limit value.
Select I min (50 or 100 A).
4]
Attach the test cables.
5]
Turn the function selector to desired I > I min
position.
The instrument indicates that it is charging
the capacitor by a repeated sound and on
the display shows alternating "CAP" and
"CHG" as well as the padlock symbol.
Charging
6]
When the lock symbol disappears the MOM2
is ready for a measurement.
Ready for test
7]
Press the TEST button on MOM2 or pull the
trigger on the probe.
A continuous audio signal tells that the
measurement is in progress.
When the measurement is complete there
will be a pass or a fail signal.
A]
If the resistance value is below the P/F limit
and the current value is over the set min
current limit the result will be shown on the
display with big digits e.g. as below.
The small digits toggle between max and min
current value and the
P/F limit.
The minimum test current was 80 A and resistance is
102
µΩ .
B]
If the resistance value is over the P/F limit
there is the fail signal and the > character is
displayed to the left of the set
P/F value.
The small digits show the set
P/F
value (< 90 μΩ).
The character ">" to the left of the big digits indicates that
the P/F value was exceeded.
C]
If the current value is below the set min cur-
rent limit there is the fail signal and the <
character is displayed to the left of the set
min current value.
The maximum test current was 82 A and the test current
was below 100 A.
D]
If both the P/F limit and the current limit are
contravened, the big digits will toggle be-
tween resistance value, < current limit and >
P/F limit.