Fluke 1664 FC Installation Multifunction Testers

Product name

Product overview: The 1664 FC puts a lot of testing power in your hands to quickly and efficiently test to all local regulations, protect appliances, and share test results in real time over your smartphone.

What's in the box:

  • Includes "Insulation Pre-test" that detects when appliances are connected to the system and stops the test
  • Runs seven installation tests automatically in one sequence with a single connection through Auto Test
  • Allows you to share test results in real time over your smartphone via Fluke Connect Measurements
  • 6 mA RDC-DD testing for EV charging stations

Specifications: Fluke 1664 FC Installation Multifunction Testers

Specifications: Fluke 1663 and 1664 FC Installation Multifunction Testers

AC voltage measurement
Range500 V
Resolution0.1 V
Accuracy 45 Hz – 66 Hz0.8% + 3
Input impedance360 kΩ
Overload protection660 V rms
Continuity testing (RLO)
Range (autoranging)20 Ω / 200 Ω / 2000 Ω
Resolution0.01 Ω / 0.1 Ω / 1 Ω
Open Circuit Voltage>4 V
Insulation resistance measurement (RISO)
Test voltages50-100-250-500-1000 V
Accuracy of test voltage (at rated test current)+10%, -0%
Test voltage50 V
100 V
250 V
500 V
1000 V
Insulation resistance range20 MΩ / 50 MΩ
20 MΩ / 100 MΩ
20 MΩ / 200 MΩ
20 MΩ / 200 MΩ / 500 MΩ
20 MΩ / 200 MΩ / 1000 MΩ
Resolution0.01 MΩ / 0.1 MΩ
0.01 MΩ / 0.1 MΩ
0.01 MΩ / 0.1 MΩ
0.01 MΩ / 0.1 MΩ / 1 MΩ
0.01 MΩ / 0.1 MΩ / 1 MΩ
Test current1 mA @ 50 kΩ
1 mA @ 100 kΩ
1 mA @ 250 kΩ
1 mA @ 500 kΩ
1 mA @ 1 MΩ
Loop and line impedance (ZI)
Range10 Ω (Hi current mΩ mode)/20 Ω/200 Ω/2000 Ω
Resolution0.001 Ω/ 0.01 Ω/ 0.1 Ω/1 Ω
Prospective earth fault current, PSC test 
Range1000 A / 10 kA (50 kA)
Resolution1 A / 0.1 kA
ComputationProspective earth fault current (PEFC) or Prospective short circuit current (PSC) determined by dividing measured mains voltage by measured loop (L-PE) resistance or line (L-N) resistance, respectively.
RCD testing, RCD types tested
RCD TypeAC¹
G²,S³
Model 1663A4, AC¹, G²,S³
Model 1664 FCA, AC, B5, S
Notes¹Responds to AC
²General, no delay
³Time delay
⁴Responds to pulsed signal
⁵Responds to smooth DC signal
Tripping speed test (ΔT)
Current settings¹10-30-100-300-500-1000 mA – VAR
10-30-100 mA
Multiplierx ½, x 1
x 5
VAR Mode Type B - 6, 60, 200 mA
Measurement rangeRCD Type G310 ms
50 ms
RCD Type S510 ms
160 ms
EV / RDC-DD6 mA - 10s
60 mA - 0.3s
200 mA - 0.1s
Notes¹1000 mA type AC only
700 mA maximum type A in VAR mode
The VAR Mode at RCD type B (smooth DC currents) generates the test currents acc. to IEC 62955 for RCD type A-EV or RDC-DD (6/60/200 mA and ramp <2 to 6 mA).
RCD/FI-Tripping Current Measurement/Ramp Test (IΔN)
Current range30% to 110% of RCD rated current¹
<2 mA to 6 mA smooth DC³
Step size10% of IΔN²
Linear rising within 30 s
Dwell timeRCD Type G300 ms/step
RCD Type S500 ms/step
Measurement accuracy±5%
Specified trip current ranges (EN 61008-1)50% to 100% for Type AC
35% to 140% for Type A (>10 mA)
35% to 200% for Type A (≤10 mA)
50% to 200% for Type B
Notes¹30% to 150% for Type A IΔN > 10 mA
30% to 210% for Type A IΔN = 10 mA
20% to 210% for Type B
²5% for Type B
³For RCD type A-EV/RDC-DD acc. to IEC 62955 
Earth Resistance Test (RE)
Range200 Ω / 2000 Ω
Resolution0.1 Ω / 1Ω
Frequency128 Hz
Output Voltage25 V
Phase Sequence Indication
Icon  icon phase sequence indicator    Phase Sequence indicator is active.
General Specifications
Size (L x W x H)10 x 25 x 12.5 cm
Weight (incl. batteries)1.3 Kg
Battery size, quantityType AA, 6 ea.
SealingIP-40
SafetyComplies with EN/IEC 61010-1 and EN/IEC 61010-2-034
OvervoltageCAT III / 500V; CAT IV 300V
PerformanceEN61557-1 to EN61557-7 and EN61557-10