Fluke 1664FC Multifunction Installation Tester (UK) – 18th Edition Compliant
The Fluke 1664 FC is the only multifunction installation tester that protects connected appliances from damage during insulation tests and allows you to share your test results wirelessly by smartphone with coworkers or customers.
Fluke’s patented Insulation PreTest stops you from performing tests with appliances that are connected to the system during the test. This helps eliminate accidental damage and keeps your customers happy.
In addition, the Fluke 1664 FC offers you the power of Fluke Connect. Now you can send test results straight from your tester to your smartphone, and transmit those results to other members of your team. You can get feedback, suggestions, and even have work orders sent to your job site.
You can also save your test results to Fluke Cloud™ storage. No more writing down data on paper with the possibility of transcription errors. Cloud storage gives you a fast, secure and accurate way to store your test data and create test certificates with optional Fluke TRUTEST Software.
Key Features
• Voltage terms (AC and DC) and frequency
• Insulation-PreTest safety function
• Insulation at L-N, L-PE, N-PE inputs
• Auto Test sequence
• Loop and line resistance – mΩ resolution
• Continuity at L-N, L-PE, N-PE inputs
• Test smooth DC-sensitive RCDs (Type B/B+)
• Earth resistance
• Insulation resistance
• Continuity and resistance
• Measure motor windings with continuity test (@ 10 mA)
• RCD trip time
• RCD trip current (ramp test)
• Measures trip time and current for RCD type A and AC in one test
• RCD variable test current
• Automatic RCD test sequence
• Phase sequence test
• On/Off switchable Auto Start for RCD and Loop test
• Self-test
• Illuminated display
• Z Max Memory
• Memory
• IR-USB and BLE interface
• ShareLive calling
• Fluke Cloud (FC) storage
Warranty/Guarantee
• 3 Year Fluke Warranty
Includes
• 6x AA (IEC LR6) cell batteries
• C1600 hard carrying case
• Zero adapter – to null your test leads
• UK mains test lead plug
• Unfused test lead set including 3x test leads, 3x test probes, 3 croc clips
• Set of 3 fused test probes
• Padded neck strap
• Quick reference guide
• TP165X remote control probe and lead
• User’s manual on CD-ROM
• Fluke Calibration Certificate
• 3 Year Fluke Warranty
Fluke 1660 Series Differences
There are three models in the 1600 series – the 1662, the 1663, and the 1664 FC.
The 1664 FC is the most advanced, offering Insulation PreTest, Auto Test sequences, Fluke Connect compatibility, ShareLive calling, and Fluke Cloud storage, alongside enhanced memory and BLE interface support.
Technical Specifications (Highlights)
• Voltage (TRMS): Up to 500V, 0.1V resolution
• Continuity Testing: 20Ω to 2000Ω ranges, 0.01Ω–1Ω resolution
• Insulation Resistance: 50V–1000V test voltages, ranges up to 1000MΩ
• Loop & Line Impedance: Resolution down to 1mΩ
• RCD Testing: AC, A/F, B/B+, G, S types supported
• Earth Resistance: 200Ω/2000Ω ranges
• Phase Sequence Indication: 100–500V
• Dimensions: 10cm x 25cm x 12.5cm
• Weight: Approx 1.3kg
• Safety: CAT III 500V, CAT IV 300V
Who Should Buy This & Why
The Fluke 1664FC is the ultimate choice for professional electricians, contractors, and compliance testers who need a multifunction installation tester that meets 18th Edition UK standards. With advanced safety features like Insulation PreTest, wireless connectivity via Fluke Connect, and secure cloud storage, it’s designed for those who value accuracy, efficiency, and customer protection. Buyers working in commercial, industrial, or residential environments will benefit from its comprehensive test functions, robust build, and ability to streamline certification processes, making it an indispensable tool for modern electrical testing and reporting.