Fluke 1652C User Manual

1652C/1653B/1654B
Users Manual
22
Note
Be sure the batteries are in good charge condition before you zero the
test leads.
4. Press and hold  until the reading settles. If the continuity beeper is
enabled, the tester beeps continuously for measured values less than 2 Ω
and there is no stable reading beep for measured values greater than 2 Ω.
If a circuit is live, the test is inhibited and the AC voltage appears in the
secondary (lower) display.
Extended Documentation Mode
In the Extended Documentation mode, the Tester stores the measurement
result with the measurement location: R1+R2, R2, r1, r2 or rn. You can select
the information before or after the measurement with . The definitions are:
R1+R2 = Rx1/2, R2 = R/2, r1 = x1, r2 = /2, rn = x5.
Measuring Loop/Line Impedance
apx006f.eps
Figure 11. Loop/Line Impedance/Switch and Terminal Settings
Loop Impedance (Line to Protective Earth L-PE)
Loop impedance is source impedance measured between Line (L) and
Protective Earth (PE). You can also ascertain the Prospective Earth Fault
Current (PEFC) that is the current that could potentially flow if the phase
conductor is shorted to the protective earth conductor. The tester calculates the
PEFC by dividing the measured mains voltage by the loop impedance. The
loop impedance function applies a test current that flows to earth. If RCDs are
present in the circuit, they may trip. To avoid tripping, always use the Z
l
No Trip
function on the rotary switch. The no trip test applies a special test that
prevents RCDs in the system from tripping. If you are certain no RCDs are in
the circuit, you can use the Z
l
Hi Current function for a faster test.

Fluke 1652C Specifications

General

Test Voltage	50 V, 100 V, 250 V, 500 V, 1000 V
Loop and Line Resistance	0.01 Ω to 2000 Ω
RCD Testing	Yes
Display	Digital
Frequency	45 Hz to 65 Hz
Phase Sequence Indicator	Yes
Power Supply	6 x 1.5 V AA batteries
Weight	1.2 kg
Voltage AC	500 V
Voltage DC	500 V
RCD Trip Current	10 mA, 30 mA, 100 mA, 300 mA, 500 mA
RCD Trip Test	1x
Safety Standards	EN 61010-1
Operating Temperature	-10°C to +50°C
Earth Resistance Test	Not available