Fluke 1664FC Multifunction Installation Tester

Specifications: Fluke 1664 FC Installation Multifunction Testers


AC voltage measurement

(Range 500 V, Resolution 0.1 V, Accuracy 45 Hz – 66 Hz 0.8% + 3)
Input impedance 360 kΩ
Overload protection 660 V rms
Continuity testing (RLO)

Range (autoranging) 20 Ω / 200 Ω / 2000 Ω
Resolution 0.01 Ω / 0.1 Ω / 1 Ω
Open Circuit Voltage >4 V

Insulation resistance measurement (RISO)

Test voltages 50-100-250-500-1000 V
Accuracy of Test voltage (at rated test current) +10%, -0%
Test voltage: 50 V Ranges: 20 MΩ /50 MΩ Resolution: 0.01 MΩ / 0.1 MΩ Test current: 1 mA @ 50 kΩ
Test voltage: 100 V Ranges:20 MΩ / 100 MΩ Resolution: 0.01 MΩ / 0.1 MΩ Test current: 1 mA @ 100 kΩ
Test voltage: 250 V Ranges: 20 MΩ / 200 MΩ Resolution: 0.01 MΩ / 0.1 MΩ Test current: 1 mA @ 250 kΩ
Test Voltage: 500 V Ranges: 20 MΩ / 200 MΩ / 500 MΩ Resolution: 0.01 MΩ / 0.1 MΩ / 1 MΩ Test current: 1 mA @ 500 kΩ
Test Voltageb1000 V Ranges: 20 MΩ / 200 MΩ / 1000 MΩ Resolution: 0.01 MΩ / 0.1 MΩ / 1 MΩ Test current: 1 mA @ 1 MΩ


Loop and line impedance (ZI)
Range 10 Ω / Resolution: 1 Ω
Range 0.001 Ω / Resolution: 0.1 Ω
Range High current mΩ mode: 0.01 Ω
Prospective earth fault current, PSC test
Range 1000 A / Resolution: 1A
Range 10 kA (50 kA) Resolution: 0.1kA
Computation Prospective 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 Type AC (Responds to AC), G (General, no delay) ,S (Time delay)
Model 1664 A, AC, B5, S
Tripping speed test (ΔT)
Current settings 10-30-100-300-500-1000 mA – VAR
10-30-100 mA
Multiplier x ½, x 1, x 5
Measurement range RCD Type G 310 ms / 50 ms
RCD Type S 510 ms / 160ms
Measurement accuracy ±5%

Earth Resistance Test (RE)

Range: 200 Ω Resolution: 0.1 Ω
Range: 2000 Ω Resolution: 1Ω
Frequency 128 Hz
Output Voltage 25 V
Phase Sequence Indication
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