Fluke 1673FC SCH Multifunction Installation Tester

The Fluke 1673 FC SCH, reference 5580834, is a professional multifunction tester designed to verify residential, commercial, and industrial electrical installations. It combines in a single instrument measurements of voltage, continuity, insulation resistance, loop and line impedance, voltage drop, RCD testing, earth resistance, and phase sequence, making it easy to carry out complete checks on an installation.

This version features a full-color touchscreen, structured project management, automatic test sequences, and Fluke Connect wireless connectivity. It allows results to be organized by customer, site, distribution board, circuit, and test point, reducing manual documentation work and making it easier to generate reports later with compatible Fluke TruTest software.

Fluke 1673 FC multifunction tester for electrical installations

The Fluke 1673 FC belongs to the new generation of installation testers in the 1670 series. It is designed so that electricians, installers, maintenance technicians, and inspectors can perform the main tests required during commissioning, maintenance, and verification of electrical installations with a single device.

Its interface combines a color touchscreen with a rotary selector, allowing quick access to functions without relying on complex menu structures.

Automatic test sequences

One of the specific features of the 1673 FC and 1674 FC models is the automatic test sequence. This function allows a succession of installation tests to be carried out with a single setup, speeding up repetitive tasks.

Automatic validation also makes it possible to compare results with defined limits and helps identify during the test itself whether a measurement falls within the established criteria.

Fluke Connect wireless connectivity

The 1673 FC integrates Fluke Connect, allowing measurement results to be wirelessly synchronized with a compatible mobile device.

With Fluke Connect, it is possible to create and manage projects, distribution boards, circuits, and test points, as well as attach photos and notes to inspected items.

Data can later be transferred to Fluke TruTest software for the creation and management of reports and test certificates.

Structured project and results management

The tester allows information for each job to be organized directly in the instrument using a hierarchical structure of:

• Customers.
• Sites.
• Distribution boards.
• Circuits.
• Test points.

This organization helps keep each result linked to the corresponding circuit or element and reduces the need to manually transcribe data once the inspection is complete.

Voltage and frequency measurement

The Fluke 1673 FC can measure voltage up to 600 volts, with 0.1-volt resolution, as well as frequency between 45 and 66 hertz.

• Voltage range: up to 600 volts.
• Resolution: 0.1 volts.
• Frequency range: 45 to 66 hertz.
• Frequency resolution: 0.1 hertz.
• Overload protection: 660 volts.

Using the mains lead, the instrument can simultaneously display phase-to-neutral, phase-to-earth, and neutral-to-earth voltages, avoiding the need to repeatedly change the measurement connections.

Continuity test

The continuity check allows verification of protective conductors, equipotential bonding, and other low-resistance elements.

• Automatic ranges: 20, 200, and 2,000 ohms.
• Resolutions: 0.01, 0.1, and 1 ohm respectively.
• Open-circuit voltage: greater than 4 volts.

The instrument also includes a continuity test with a reduced current of 10 milliamps, useful, among other applications intended by Fluke, for measuring motor windings.

Insulation resistance measurement up to 1,000 volts

The Fluke 1673 FC allows several test voltages to be selected to adapt the insulation test to the circuit being checked.

• Test voltages: 50, 100, 250, 500, and 1,000 volts.
• Maximum resistance range: up to 1,000 megaohms at the 1,000-volt test.
• Rated test current: 1 milliamp under the conditions specified by Fluke.

The availability of a 50-volt test voltage expands testing possibilities compared with models that start at higher voltages.

Loop and line impedance

The instrument can check phase-to-earth loop impedance and phase-to-neutral line impedance.

It features a no-trip mode for circuits protected by residual current devices and a high-current mode for measurements when the installation allows it.

• Ranges: 20, 200, and 2,000 ohms.
• Minimum resolution: 0.01 ohms in the 20-ohm range.
• Input voltage range for the test: 50 to 600 volts AC.
• Frequency: 45 to 66 hertz.

PEFC and PSC up to 50 kA

Based on voltage and impedance measurements, the Fluke 1673 FC calculates the prospective earth fault current and the prospective short-circuit current.

• Range: 0 to 50 kiloamps.
• Resolution below 1,000 amps: 1 amp.
• Resolution from 1,000 amps: 0.1 kiloamps.

The tester can display impedance and the corresponding prospective current simultaneously to make circuit protection assessment easier.

Voltage drop measurement

The Fluke 1673 FC includes a dedicated function to calculate voltage drop from line impedance and the nominal current entered.

• Range: 0.0 to 99.9%.
• Resolution: 0.1%.

This function is useful for verifying that the circuit voltage drop remains within the criteria defined for the installation.

RCD testing

The 1673 FC model offers extensive capabilities for testing residual current devices and measuring both their trip time and trip current.

According to the official documentation, it supports tests on the following types:

• Type AC RCD.
• Type A RCD.
• Type F RCD.
• Type B and B+ RCD.
• RDC-DD for 6 mA DC residual currents.
• A/EV RCD.
• B/Mi RCD.
• GFCI.
• General and selective versions, depending on the RCD type.

The instrument allows trip time tests, current ramp tests, and automatic sequences for certain rated currents.

Earth resistance test

Specific earth resistance measurement is available on the 1673 FC and 1674 FC models.

• 200-ohm range: 0.1-ohm resolution.
• 2,000-ohm range: 1-ohm resolution.
• Test frequency: 128 hertz.
• Output voltage: 25 volts.

The tester inhibits the test if it detects a voltage above 10 volts at the terminals before the measurement begins.

Phase sequence check

For three-phase installations, the instrument provides phase sequence indication.

• Phase-to-phase voltage range: 185 to 600 volts.
• Correct sequence: 1-2-3 indication.
• Reverse sequence: 3-2-1 indication.

Mains wiring indicator

The instrument includes visual indications that allow detection of whether phase-to-earth or phase-to-neutral connections are reversed. For certain loop and RCD tests, the tester can automatically prevent the measurement if the connection or voltage conditions are not suitable.

Full-color touchscreen

The interface includes a high-resolution color touchscreen and a rotary selector, offering two ways to navigate functions and parameters.

The instrument also provides visual connection aids to guide the user during measurement setup.

Memory and test documentation

The Fluke 1673 FC allows results to be saved and associated with the installation structure. It also includes specific functions such as Z Max memory to record and evaluate the maximum value obtained during loop impedance tests.

The combination of internal memory, project management, and Fluke Connect helps keep an inspection organized from the start of testing through to the final report.

Compatible with Fluke TruTest

Results can be used with Fluke TruTest software to create reports and certificates from the data obtained during testing.

Reference 5580834 corresponds to the standard Fluke 1673 FC and does not include the TruTest software package. Fluke sells a separate 1673 FC FTT reference that does include the software.

Rechargeable lithium-ion battery

The tester uses a Fluke BP290 rechargeable lithium-ion battery, avoiding the need for disposable batteries during normal work.

• Battery voltage: 10.8 volts.
• Capacity: 2,500 milliamp hours.
• Energy: 27 watt hours.
• Charging: via USB-C.

CAT III 600 V and CAT IV 300 V safety

The Fluke 1673 FC is designed for professional work on electrical installations and complies with the safety standards indicated by the manufacturer.

• Measurement category: CAT III 600 volts.
• Measurement category: CAT IV 300 volts.
• Maximum voltage between terminals and earth: 600 volts.
• Standards: IEC/EN 61010-1, IEC 61010-2-030, and IEC 61010-2-034.
• Performance: in accordance with the applicable sections of IEC 61557.

IP40 protection and portable design

The instrument has an IP40 protection rating according to IEC 60529 and is designed for portable use in testing and inspection tasks.

• Dimensions: 262.5 × 141.9 × 119.3 mm.
• Weight with battery: 1.6 kg.
• Operating temperature: 0 to 40 °C.
• Storage temperature: -20 to 60 °C, limited by battery specifications.
• Maximum operating altitude: 2,000 m.
• Protection: IP40.

Accessories included with reference 5580834

According to the official configuration of the Fluke 1673 FC, the package includes the items needed to begin carrying out the main installation tests:

• Fluke 1673 FC multifunction tester.
• High-performance mains lead with single-input connector.
• Hard carrying case.
• USB-C power adapter for charging.
• Remote control probe.
• Shoulder strap.
• Lead compensation adapter.
• Test leads and probes.
• Alligator clips.
• Rechargeable lithium-ion battery.

Technical features of the Fluke 1673 FC SCH 5580834

• Brand: Fluke.
• Series: 1670.
• Model: 1673 FC SCH.
• Reference: 5580834.
• Type: multifunction electrical installation tester.
• Display: full-color touchscreen.
• Wireless connectivity: Fluke Connect.
• Automatic test sequences: yes.
• Structured project management: yes.
• Voltage measurement: up to 600 volts.
• Frequency: 45 to 66 hertz.
• Continuity: 20, 200, and 2,000 ohm ranges.
• Insulation test voltages: 50, 100, 250, 500, and 1,000 volts.
• Insulation resistance: up to 1,000 megaohms.
• Loop and line impedance: yes.
• No-trip loop test: yes.
• PEFC and PSC calculation: up to 50 kiloamps.
• Voltage drop measurement: yes.
• RCD tests: AC, A, F, B, B+, RDC-DD, A/EV, B/Mi, and GFCI depending on test configuration.
• Earth resistance test: 200 and 2,000 ohms.
• Phase sequence: 185 to 600 volts.
• Fluke TruTest: compatible; software not included in reference 5580834.
• Battery: BP290 lithium-ion.
• Battery capacity: 2,500 milliamp hours.
• Charging: USB-C.
• Safety category: CAT III 600 volts / CAT IV 300 volts.
• Protection rating: IP40.
• Dimensions: 262.5 × 141.9 × 119.3 mm.
• Weight with battery: 1.6 kg.

Testing, data management, and connectivity in a single instrument

The Fluke 1673 FC SCH 5580834 combines in a single tester the main measurements needed to verify electrical installations with advanced automation and documentation features. Automatic sequences, advanced RCD tests, earth measurement, and Fluke Connect connectivity make it an especially complete tool for professional installation, maintenance, and inspection work.

Its touchscreen, rechargeable battery, structured project management, and compatibility with Fluke TruTest allow measurements to be carried out in the field while keeping results organized for later documentation, reducing manual tasks throughout the testing process.