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Fluke 1664FC Multifunction Installation Tester with Fluke Connect

  • Automatically carries out 5 required installation tests in one sequence
  • Insulation PreTest prevents potentially serious and costly mistakes
  • FlukeCloud allows you to share your results
  • Test smooth DC sensitive RCDs (Type B/B+)
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£849.00 (ex VAT)

£1,018.80 (inc VAT)

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Fluke 1664FC 18th Edition Multifunction Installation Tester with Fluke Connect

The Fluke 1664 is the highest specification multifunction tester from Fluke. Packed full of advanced features to help make testing safer, faster and much more convenient.

Reduce testing time by 40%

The 1664 completes 5 required installation test in one sequence with a single touch of the test button, ensuring compliance with local installation regulations. Auto Test reduces the number of manual connections, decreases the chance of making errors and reduces test time by 40% when compared to previous Fluke models.

Simply set the test voltage and nominal trip current for the RCD and press the test button to automatically carry out the following tests

  • Loop impedance
  • Line impedance
  • RCD no trip test
  • RCD trip test (current and time)
  • Insulation tests: L-N / L-E and N-E

Once the tests have been completed, all test results can be view by scrolling thorugh them. They can then be stored to the Fluke 1664 FC memory or sent to a smart device using Fluke Connect.

Protection against costly mistakes

The Fluke 1664 prevents the user from making potentially serious and costly mistakes when carrying out an insulation test. If the tester detects that an appliance is connected to the system under test, then the insulation test will be stopped before damage is caused. A visual warning is also displayed. This is a unique feature of the Fluke 1664 which is not found on any other MFT.

Fluke Connect

Fluke Connect; available free to download on iOS and Android, allows you to easily view measurements results remotely. You can also easily email your recorded measurements to colleagues for them to view even when they are not on site (Wi-Fi or mobile signal required).


All your data and test results stored via FlukeCloud are ready for easy access using your smart phone or tablet, anytime anywhere. You can also import the data into Fluke DMS to process and generate certificates.

Fluke 1664 video

Fluke 1664 key features

  • Complete 18th edition multifunction tester
  • Auto Test mode reduces test time by up to 40%
  • AC voltage measurement up to 500V
  • Insulation PreTest helps prevents costly mistakes
  • Insulation and continuity testing at L-N and N-PE inputs
  • Auto ranging continuity test (20Ω / 200Ω / 2000Ω)
  • Insulation resistance measurement (RISO)
  • Insulation test voltages: 50, 100, 250, 500 and 1000V
  • 50V and 100V ideal for testing sensitive equipment
  • Fast voltage measurement between L-N, L-PE and N-PE
  • Loop and line impedance (ZI)
  • Z-max memory for loop tests
  • PEFC and PSC measurement displayed simultaneously
  • RCD testing: Trip speed and current with ramp test
  • Measure RCD trip current & trip time in parallel (Type AC and A)
  • Auto RCD test continues testing when RCD is reset
  • Test smooth Type B RCD’s
  • Suitable for testing EV charging points (adaptor required)
  • Earth resistance testing
  • Phase sequence indication
  • Built in memory for results storage
  • Large backlit display
  • Single rotary dial for test selection
  • Easy to use even when wearing PPE
  • Fluke Connect compatible (Android and iOS)
  • Share results in real time with Fluke Connect
  • Withstands a drop of 1 meter.
  • Compact, lightweight and padded neck-strap to free your hands for all day testing.

Fluke 1662 vs 1663 vs 1664

  1662 1663 1664 FC
Insulation-PreTest safety function NEW     
Insulation test at L-N, L-PE, N-PE inputs NEW     
Auto Test sequence NEW                       
Performs line/loop impedance, RCD trip current/trip time and insulation tests in one go
Loop and line resistance—resolution     
Continuity test at L-N, L-PE, N-PE inputs NEW   
Continuity test selectable at 250mA/10mA with Auto polarity swap
Test smooth dc sensitive RCDs (Type B/B+)   
Earth resistance   
Voltage measurement TRMS (ac and dc) and frequency 
Wiring polarity checker, detects broken PE and N wires 
Insulation resistance 
Continuity and resistance 
Measure motor windings with continuity test (@ 10 mA) 
Loop and line resistance 
Prospective Earth Fault Current (PEFC/IK) 
Prospective Short-Circuit Current (PSC/IK) 
RCD trip time 
RCD trip current (ramp test) 
Measures trip time (ramp) and current for RCD type A and AC in one test 
RCD variable test current 
Automatic RCD test sequence 
Phase sequence test 
Other Features      
Fluke Connect compatibility NEW     
ShareLive™ calling NEW    
Fluke Cloud™ storage NEW     
On/Off switchable Auto Start for RCD and Looptest NEW 
Illuminated display 
Memory, interface      
Z Max memory (for loop tests- easy evaluation of the highest loop test value)NEW   
Memory 3000 measurements  
IR-USB and BLE interface (use with optional Fluke DMS software)   IR-USB IR-USB/BLE
Included Accessories      
Heavy duty mains cord with single input connector NEW 
Hard case 
Fused test probes
Remote control probe 
Zero adapter 
Safety Overvoltage CAT III 500 V, CAT IV 300 V
3 year warranty
Insulation test voltages : 100V/250V/500V/1000V  
Insulation test voltages : 50V/100V/250V/500V/1000V    


What’s Included

  • Fluke 1664FC Multifunction Installation Tester with Fluke Connect
  • 6x AA (IEC LR6) cell batteries
  • C1600 hard carrying case
  • Zero adapter
  • Heavy duty mains cord
  • STD standard test lead set
  • C1600 hard carrying case
  • Padded carrying and waist strap
  • Quick reference guide
  • TP165X remote control probe and lead
  • User’s manual on CD-ROM


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