KYORITSU 6516BT Multi Function Tester with Bluetooth

One tester, every test on the switchboard

If your van currently carries three separate instruments to get through a single installation test — a loop tester, an RCD tester, and something for insulation resistance — you already know the real cost isn’t the gear, it’s the time. Swapping instruments between tests, re-clipping leads, second-guessing which unit is still in calibration, and writing up three sets of results by hand all add friction to a job that should take minutes.

The Kyoritsu KEW 6516BT Multifunction Installation Tester is built to remove that friction. It’s a single CAT IV 300V-rated instrument that covers insulation resistance, loop impedance (including high-current 0.001Ω resolution testing), RCD testing across every common type, earth resistance, continuity, phase rotation, AC voltage/frequency, SPD (surge protection device) testing, and Portable Appliance Testing (PAT) — all from the one rotary dial. For Australian electrical contractors, solar installers, and industrial maintenance teams who move between switchboards, distribution boards, and EV charge points in a single day, that consolidation is the whole point.

Anti-Trip Technology: loop testing without tripping the RCD

Nuisance tripping during loop impedance testing is one of the most common frustrations on an RCD-protected circuit — and one of the most time-costly, because a tripped RCD means resetting the board, re-explaining to the client why the lights just went out, and doing the test again. The 6516BT’s Anti-Trip Technology (ATT) addresses this directly, with a 2-wire and 3-wire ATT loop test designed for trip-free L-PE testing on RCD-protected circuits. The 3-wire method (L, N, PE) is used where a neutral is available for the most accurate readings, while the 2-wire method covers situations with no neutral present — such as 3-phase motor circuits — where a standard loop test would otherwise be impractical.

Alongside ATT, the tester’s high-current LOOP HIGH function delivers a 2Ω range with 0.001Ω resolution, using a 25A test current for genuinely precise fault-loop measurements. A built-in Zs/Ra Limit function then compares the measured loop impedance against the disconnection-time values required for TN and TT systems, returning a straightforward pass or fail so you’re not doing the maths on-site.

RCD testing that covers where installations are actually heading

Electrical installations aren’t standing still — EV chargers, variable-speed drives, and Type B-rated equipment are turning up on more and more jobs, and a tester that only handles Type AC RCDs quickly becomes the wrong tool for the work. The 6516BT tests AC, A, F, B (General & Selective), EV, and Variable RCD types, with Single, Auto, Ramp test and contact voltage (Uc) modes, and trip current settings spanning 6mA through to 1000mA depending on RCD type. That range means the same instrument that verifies a domestic switchboard this morning can verify an EV charge point’s 6mA DC-sensitive RCD protection this afternoon — no second tester required. For teams doing dedicated EVSE compliance work, the tester also pairs with Kyoritsu’s optional 8602 EVSE adapter (available as the KEW 6516BT-EV2 kit) to extend loop and RCD testing directly to EV charging equipment.

Insulation, earth, continuity and phase rotation, without compromise

Insulation resistance testing runs at 100V, 250V, 500V and 1000V test voltages with auto-ranging up to 2000MΩ and automatic discharge of any stored charge once the test completes — a safety detail worth having built in rather than remembered manually. Earth resistance testing (2 and 3-wire) ships complete with auxiliary earth spikes, so there’s no separate accessory purchase to get earth testing started. Continuity testing runs at a 200mA or 15mA measuring current with a selectable buzzer for fast pass/fail judgement without having to watch the display, and phase rotation testing on 3-phase lines gives a clear on-screen sequence indication — useful confirmation before energising new 3-phase equipment or motor circuits.

SPD and PAT testing, built in rather than bolted on

Surge Protection Devices are now standard in most switchboards, and the 6516BT can test varistor-type SPDs by measuring breakdown (tripping) voltage without damaging the unit under test — a check that would otherwise need a dedicated instrument. The tester also includes a PAT (Portable Appliance Tester) function for insulation resistance and protective earth bond continuity checks on Class I and Class II portable appliances, useful for contractors and facility teams who need to cover basic appliance safety checks alongside fixed installation work without carrying a separate dedicated PAT tester for every job.

Built for the field: display, safety rating and battery life

A 3.5-inch colour dot-matrix LCD keeps all test data legible on one screen, and the built-in HELP function displays the correct connection diagram for whichever test function is selected — a genuinely practical feature when you’re working through an unfamiliar test sequence or training a junior team member on-site. Testing is designed to run hands-free where needed, using either the remote probe or the lockdown function on the test button, so you can hold leads with both hands during awkward switchboard access.

Safety is rated to IEC 61010-1 CAT IV 300V / CAT III 600V with Pollution Degree 2, and the instrument meets IEC 61557 parts 1, 2, 3, 4, 5, 6, 7 and 10 for the relevant test functions, IEC 60529 (IP40) for ingress protection, and IEC 61326 for EMC. Power comes from 8 x AA (LR6) batteries, keeping the tester independent of mains power or proprietary battery packs — handy when you’re working in a plant room or on a job site without ready access to charging points.

Bluetooth connectivity and data handling

The KEW 6516BT includes Bluetooth 5.0 (Low Energy) alongside a USB interface, letting you transfer stored test results to a phone, tablet or PC instead of copying figures off the screen by hand. Kyoritsu’s own KEW Smart Advanced app and KEW Report PC software are available for basic result transfer and reporting if you want to use them out of the box. For contractors and test-and-tag teams running Field Efficient app platform for job scheduling, certificate generation and broader data management across their whole test fleet, the 6516BT’s Bluetooth data output is a straightforward source instrument to build results reporting around.

What’s in the box

Every KEW 6516BT ships complete: mains test lead (plug variant to be confirmed at order — UK, EU, South African or Australian pin configurations available), Model 7281 test leads with remote control switch, Model 7246 distribution board test lead, Model 7228A earth resistance test leads, Model 8041 auxiliary earth spikes (2 spikes/set), Model 9084 soft case, Model 9142 carrying case, Model 9151 shoulder strap, Model 9199 shoulder pad, 8 x AA batteries, an instruction manual, and a calibration certificate. The optional 8212-USB adapter (standard on the non-Bluetooth KEW 6516, optional here) enables direct USB report printing via KEW Report software.

Who reaches for the 6516BT

• Electrical contractors running full installation test sequences — insulation, loop, RCD, earth, continuity and phase rotation — from a single instrument instead of swapping testers between checks.
• Solar and EV installers who need Type B and EV RCD testing plus SPD verification on modern installations that legacy AC-only testers can’t cover.
• Industrial maintenance teams verifying loop impedance and RCD protection on 3-phase distribution boards and motor circuits, where the 2-wire ATT function handles no-neutral situations.
• Facility managers and safety officers who need consistent, documented test results — insulation, earth and continuity — across a site, backed by a factory calibration certificate.
• Technical educators and RTOs teaching multifunction installation testing across the full spread of IEC 61557 test functions in one demonstration unit.

Why buy your KEW 6516BT from Rapid-Tech

Rapid-Tech supplies genuine Kyoritsu test and measurement equipment to Australian trade professionals, backed by local stock, expert product guidance, and in-house calibration support so your 6516BT stays traceable and job-ready. If you need help deciding between the KEW 6516 and 6516BT, or want to add the 8602 EVSE adapter for EV charge point testing, our team can talk you through the right configuration for your work before you buy.

Pairing your 6516BT with Field Efficient takes the Bluetooth-transferred test data further, giving you a central place to manage job scheduling, certificates and reporting across your whole test fleet rather than handling results instrument-by-instrument.

Technical Specifications

What is the Kyoritsu KEW 6516BT used for? The Kyoritsu KEW 6516BT is a multifunction installation tester used by electricians and maintenance technicians to test insulation resistance, loop impedance, RCD protection, earth resistance, continuity, phase rotation, voltage, SPDs and portable appliance safety — all from a single CAT IV 300V-rated instrument.

What’s the difference between the KEW 6516 and KEW 6516BT? Both models share the same test functions and specifications. The KEW 6516BT adds Bluetooth 5.0 (Low Energy) for wireless transfer of stored test results to a phone, tablet or PC, whereas the standard KEW 6516 relies on its included USB adapter for data transfer and does not have Bluetooth built in.

Can the KEW 6516BT test EV charge points? Yes. The 6516BT tests EV and Variable RCD types with a dedicated 6mA trip current setting, and can be paired with Kyoritsu’s optional 8602 EVSE adapter — sold separately or as the KEW 6516BT-EV2 kit — to extend loop and RCD testing to EV charging equipment.

Does the KEW 6516BT avoid nuisance RCD tripping during loop testing? Yes. Its Anti-Trip Technology (ATT) provides both 2-wire and 3-wire trip-free loop testing on RCD-protected circuits, so loop impedance can be verified without repeatedly resetting the switchboard’s RCD.

Does the KEW 6516BT include PAT testing? Yes. It has a built-in PAT (Portable Appliance Tester) function that checks insulation resistance and protective earth bond continuity on Class I and Class II portable appliances, in addition to its full fixed-installation test set.

What safety category is the KEW 6516BT rated to? It’s rated IEC 61010-1 CAT IV 300V and CAT III 600V, Pollution Degree 2 — suitable for use at the origin of a low-voltage supply as well as on downstream distribution circuits.

https://youtu.be/_KwfRTtwTys