UNI-T UT595 Multifunction Installation Tester for RCD - Loop Impedance

Main Product Features

• Comprehensive Installation Testing: Combines insulation resistance, continuity, loop/line impedance, PFC/PSC, and full RCD diagnostics in a single instrument.
• Non-Trip Loop Impedance: Measures loop impedance at 15 mA without tripping sensitive 30 mA residual current devices.
• High-Voltage Insulation Checks: Selectable DC test voltages of 250 V, 500 V, and 1000 V up to 1000 MΩ with short-circuit current <2 mA.
• Advanced RCD Diagnostics: Tests standard and selective RCDs with test currents from 10 mA to 500 mA (×1/2, ×1, ×2, ×5 multipliers), ramp test, and 0°/180° phase angle selection.
• 200 mA Continuity Testing: Low-resistance continuity measurement (0.00 Ω to 199 Ω) meeting strict wiring verification standards.
• Phase Sequence & AC Voltage: Instant 3-phase rotation check (L1-L2-L3) and true AC voltage measurements up to 440 V.
• User-Friendly Interface: Clear 9999-count LCD with analogue bargraph, white backlight, one-key data storage, and connection status live display.

Professional Electrical Installation Testing with the UNI-T UT595

Accurate verification of electrical systems is crucial for preventing hazards, protecting equipment, and certifying installations. The UNI-T UT595 Multifunction Installation Tester is engineered specifically for certified electricians, maintenance technicians, and electrical inspectors working across residential, commercial, and industrial facilities. Featuring complete compliance with European safety standards and bearing official CE certification, this instrument delivers reliable results that align with strict EU installation regulations.

Versatile Diagnostics: From Ground Continuity to Loop Impedance

Equipped with a broad array of measurement modes, the UT595 eliminates the need to carry multiple single-function meters. Its 200 mA continuity test verifies protective bonding conductors swiftly and accurately down to 0.01 Ω. When checking insulation integrity, users can toggle between 250 V, 500 V, and 1000 V DC test voltages, reaching resistance measurements up to 1000 MΩ. The integrated loop impedance mode features both a 20 A high-current test for raw line/loop analysis and a dedicated 15 mA non-trip setting that prevents nuisance tripping of active residual current devices during live circuit diagnostics. Real-time calculation of Prospective Fault Current (PFC) and Prospective Short-Circuit Current (PSC) up to 26 kA ensures that circuit breakers and protection devices are sized correctly for the installation.

Advanced RCD Analysis and Phase Verification

The UT595 shines in complex RCD testing scenarios. Supporting trip current settings from 10 mA to 500 mA, it handles trip time evaluations at half-rated, full-rated, double, and five times the residual current rating (×1/2, ×1, ×2, and ×5 *IΔn). Electricians can effortlessly switch between 0° and 180° phase angles to capture the fastest trigger time, conduct half-wave or full-wave tests, or run automated 30-second countdown sequences. In addition, the instrument incorporates phase sequence verification (L1-L2-L3 clockwise/counter-clockwise rotation) between 100 V and 440 V, making it an invaluable asset when commissioning 3-phase machinery, sub-panels, and commercial distribution boards.

Durable Design for Demanding Job Sites

Housed in a rugged casing rated for CAT III 300 V environments, the UNI-T UT595 is built to withstand everyday job site handling. The large 9999-count backlit display with an analogue bar graph provides crisp readouts even in dimly lit switchboards. With intuitive one-touch test triggering, a remote-control test probe, comprehensive connection status monitoring, and an automatic power-off function to preserve battery life, the UT595 streamlines verification workflows from initial installation sign-off to recurring safety audits.

Technical Specifications

Frequently Asked Questions (FAQ)

Can the UNI-T UT595 perform loop impedance tests without tripping 30 mA RCDs?

Yes. The UT595 features a dedicated Non-Trip Loop Impedance mode that operates at a low test current of 15 mA. This enables accurate measurement of earth loop impedance without inadvertently tripping active 30 mA residual current devices on the circuit.

Does the UT595 comply with European safety and regulatory standards?

Yes. The device is fully CE certified and meets essential EU safety directives for electrical measurement equipment, featuring a CAT III 300 V safety rating for secure operation within fixed distribution systems.

What RCD trip multipliers are supported by the UT595?

The UT595 supports ×1/2, ×1, ×2, and ×5 *IΔn trip time tests, along with RCD ramp (trigger current) testing. It also provides 0° and 180° phase angle selection, as well as full-wave and half-wave test options.

Can I measure prospective short-circuit and fault currents with this tester?

Yes. During line and loop impedance measurements, the UT595 automatically calculates Prospective Fault Current (PFC) and Prospective Short Current (PSC) across a wide range of 0 kA to 26 kA.

What accessories are supplied with the instrument?

The standard package includes the UT595 tester, batteries, a standard 3-wire test lead set (red, green, black), a special power test lead, a remote-control test lead for convenient triggering, a durable tool carrying box, and a user manual.