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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