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1662/1663/1664 FC
Users Manual
38
9. Press and release . If Auto Start (Power-on option: + up ) is
turned on, the test starts automatically as soon as the mains voltage is
detected and the required test leads are connected.
10. Wait for the test to complete. The primary display shows the loop
impedance.
The Prospective Earth Fault Current (PEFC) appears in amperes or
kiloamperes in the secondary display.
11. If Zmax is turned on, press the down to show the Zmax value in the
secondary display.
XW Warning
To prevent possible electrical shock, fire, or personal injury,
ensure there are no RCDs present. The display symbol
indicates the high-current loop mode. Any RCDs in the
system will trip.
Note
The Tester may show a test result even if the RCD is tripped if
the trip time is >10 ms. Because of the short measurement, the
test result does not meet the published specification. If the
Tester shows 0.00 Ω, consider that no perfect circuit exists.
Check for correct lead connection to instrument, leads are
zeroed, and fuse is good.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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