HT Instruments Combi521 Multifunction Electrical Installation and EVSE Tester

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Description
The HT Instruments COMBI521 is a new multifunction electrical installation and insulation tester for verifying the safety of domestic, industrial, and electric vehicle charging systems. It is a versatile device that combines multiple testing functionalities into a single unit.

Key Features
Automatic test sequence: The "AUTO" function automatically performs an entire test sequence for overall earth resistance, RCD tripping time, and insulation resistance after you set the RCD current value.
Compliance indication: After running the automatic test, the device gives a simple "OK" or "NOT OK" symbol to show compliance with international safety standards.
Insulation resistance testing: The COMBI521 can perform insulation resistance tests at 50V, 100V, 250V, 500V, and 1000V. It also includes measurements for Dielectric Absorption Ratio (D.A.R.) and Polarization Index (P.I.).
Electrical vehicle charging station (EVSE) testing: With the optional EV-Test 100 adapter, the COMBI521 can perform safety tests on electric vehicle charging stations, simulating the charging process to verify functionality and safety.
Data logging and connectivity: It features an internal memory for saving up to 999 test results and includes both optical/USB and Wi-Fi connections. The HTAnalysis App for iOS and Android allows for transferring, customizing, and sharing data.
Power quality analysis: The instrument can measure electrical parameters on single-phase systems, including voltage, current, power factor, power, and harmonics.
Additional measurements: Other capabilities include continuity of protective conductors, line/fault impedance, RCD tripping time and current, phase sequence, and leakage current (with an optional clamp).

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