Fluke 1664 FC Multifunction Insta

$2,605.00

The Fluke 1664 FC is a multifunction installation tester for electrical contractors, commissioning engineers, and maintenance professionals who need to verify the safety and performance of low-voltage electrical installations.

With automated installation testing, appliance protection, RCD testing, loop impedance measurement, and wireless result sharing, it helps streamline commissioning, verification, and troubleshooting work.

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The Fluke 1664 FC Multifunction Installation Tester is designed to simplify electrical installation verification by combining multiple safety and performance tests in a single handheld instrument. It is suitable for testing new installations, periodic inspections, commissioning, maintenance, and troubleshooting of electrical distribution systems.

The tester provides a comprehensive range of installation measurements, including insulation resistance, continuity, loop and line impedance, RCD trip current and trip time, earth resistance, phase sequence, AC/DC voltage, and prospective fault or short-circuit current. Its 50 V to 1000 V insulation test range supports a wide variety of electrical installation requirements.

One of the key advantages of the Fluke 1664 FC is its Auto Test function, which can perform up to seven installation tests in a single sequence. This reduces the number of manual connections required and helps improve testing efficiency while reducing the possibility of operator error.

The Insulation PreTest function provides an additional layer of protection during insulation testing. If the tester detects an appliance connected to the system under test, it stops the insulation test and provides a visual warning, helping prevent potentially costly damage to connected equipment.

For modern electrical infrastructure, the Fluke 1664 FC also supports RCD Type A-EV and RDC-DD testing for EV charging stations, including smooth DC test currents used to evaluate 6 mA DC protection devices in accordance with IEC 62955.

With Fluke Connect connectivity, measurement results can be sent to a smartphone, stored, and shared with other team members. This makes the 1664 FC useful not only for field testing but also for installation documentation, reporting, and remote collaboration.

Key Features

  • Multifunction electrical installation tester
  • Auto Test performs up to seven installation tests in one sequence
  • Insulation PreTest helps prevent accidental appliance damage
  • Insulation resistance testing at 50, 100, 250, 500, and 1000 V
  • RCD trip current and trip time testing
  • Supports RCD Type AC, A, B and EV-related testing
  • 6 mA DC protection testing for EV charging stations
  • Loop and line impedance measurement
  • Prospective earth fault and short-circuit current testing
  • Earth resistance measurement
  • Continuity testing with up to 200 mA test current
  • AC/DC voltage measurement up to 500 V
  • Phase sequence indication
  • Earth Volt Touchpad for detecting potentially hazardous earth voltage
  • Ring testing for socket circuits
  • Zero adapter for test lead and mains cord compensation
  • Fluke Connect wireless measurement sharing
  • Extended three-layer memory
  • Large backlit display with wide viewing angle
  • CAT III 500 V / CAT IV 300 V safety rating
  • IP40 enclosure
  • Approx. 1.3 kg including batteries

Typical Applications

  • Electrical installation verification
  • New electrical installation commissioning
  • Periodic electrical safety inspections
  • Distribution board and panel testing
  • RCD testing
  • Wiring and circuit verification
  • Insulation resistance testing
  • Loop impedance testing
  • Earth resistance testing
  • EV charging station installation testing
  • Electrical maintenance and troubleshooting
  • Compliance testing against applicable installation regulations

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 voltage Insulation resistance range Resolution Test current
50 V20 MΩ / 50 MΩ0.01 MΩ / 0.1 MΩ1 mA @ 50 kΩ
100 V20 MΩ / 100 MΩ0.01 MΩ / 0.1 MΩ1 mA @ 100 kΩ
250 V20 MΩ / 200 MΩ0.01 MΩ / 0.1 MΩ1 mA @ 250 kΩ
500 V20 MΩ / 200 MΩ / 500 MΩ0.01 MΩ / 0.1 MΩ / 1 MΩ1 mA @ 500 kΩ
1000 V20 MΩ / 200 MΩ / 1000 MΩ0.01 MΩ / 0.1 MΩ / 1 MΩ1 mA @ 1 MΩ

Accuracy of test voltage (at rated test current): +10%, -0%

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

¹ Responds to AC
² General, no delay
³ Time delay
⁴ Responds to pulsed signal
⁵ Responds 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 range – RCD Type G310 ms
50 ms
Measurement range – RCD Type S510 ms
160 ms
Measurement range – EV / RDC-DD6 mA - 10s
60 mA - 0.3s
200 mA - 0.1s

¹ 1000 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 time – RCD Type G300 ms/step
Dwell time – 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

¹ 30% to 150% for Type A IΔN > 10 mA; 30% to 210% for Type A IΔN = 10 mA; 20% to 210% for Type B
² 5% for Type B
³ For RCD type A-EV/RDC-DD acc. to IEC 62955

Earth Resistance Test (RE)

Range200 Ω / 2000 Ω
Resolution0.1 Ω / 1 Ω
Frequency128 Hz
Output Voltage25 V

Phase Sequence Indication

IconIcon 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

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