Fluke 1663 - Page 91

1662/1663/1664 FC
Users Manual
82
Mains Wiring Indicator
Icons (, b, c) indicate if L-PE or L-N terminals are
reversed. Loop and RCD tests are inhibited and an error code
is generated if the input voltage is not between 100 V and
500 V. The UK Loop and RCD tests are inhibited if the L-PE or
the L-N terminals are reversed.
Loop and Line Impedance (Z
I
No Trip and Hi Current)
Mains Input Voltage Range
100 - 500 V ac (45/66 Hz)
Input Connection (soft key selection)
Loop Impedance: phase to earth
Line impedance: phase to neutral
Limit on Consecutive Tests
Automatic shutdown when the temperature of
internal components is too hot.
Maximum Test Current @ 400 V
20 A sinusoidal for 10 ms
Maximum Test Current @ 230 V
12 A sinusoidal for 10 ms
Range Resolution Accuracy
[1]
10 Ω
[3]
0.001 Ω Hi Current mΩ mode: ±(2 % + 15 digits)
20 Ω 0.01 Ω
No Trip mode: ±(3 % + 6 digits)
Hi Current mode: ±(2 % + 4 digits)
200 Ω 0.1 Ω
No Trip mode: ±(3 %)
Hi Current mode: ±(2 %)
2000 Ω 1 Ω ±6 %
[2]
Notes
[1] Valid for resistance of neutral circuit <20 Ω and up to a system phase angle of 30 °. Test leads
must be zeroed before testing.
[2] Valid for mains voltage >200 V.
[3] 1664 FC only.