Fluke 6500, Руководство пользователя

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Users Manual
Description of the Tests
25
Fuse/L-N Pre-test
The pre-test verifies the fuse and lead continuity by
applying a low voltage signal across the appliance phase
and neutral pins.
If the pre-test fails the display will show a self-explanatory
message.
A fail may indicate that the fuse is blown or that there is
an open circuit in the L-N conductors. In this case press
the
MEM
key to store the fail result.
The test could also fail because you forgot to switch the
appliance on. In this case switch the appliance on and
repeat the test.
Very low power appliances, or appliances with
electronically controlled on/off switches or with an
inductance may fail this test. To enable you to test these
appliances you can assign a pass to the Fuse/L-N loop
Pre-test by pressing
GO
to continue with the test.
Note:
Accidental measurement of a defective unit may
trip a RCCB (residual current circuit breaker).
Load/ Leakage Current (I
PE
) Test
Warning
NEVER carry out this test unless you have
first carried out a thorough visual inspection,
followed by a test of the earthing (Class I
appliances), and then a test of the insulation.
You must verify that these tests are passed
before engaging this test.
Caution
Live test! The appliance will be energized at
mains voltage. For this purpose, switch on
the appliance. Appliances driven by motors
or equipped with heating units may present a
danger for the person testing (comply with
the appliance instruction manual!). Ensure
that the appliance is in a safe condition to
run and secured prior to testing .
The Load/PE Leakage test consists of:
•
a fuse and L-N loop pre-test.
•
measurements of the appliance power consumption
and load current at full mains voltage.
•
measurement of the earth leakage current (differential
measurement) at full mains voltage.
The measurements will be done in one test sequence.