HT Instruments COMBI521 -| Multifunction Electrical Installation and EVSE Tester

AUD $1,899.00 .( AUD $2,088.90 inc. GST )

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    The Combi521 is the perfect tool for any electrical installation and EVSE safety testing. With its power quality analysis capabilities, it complies with IEC/EN 61557-1 standards and can accurately measure continuity of protection cables, insulation resistance, earth resistance, RCD tripping times and currents, line / fault impedance, and more. Additionally, the Combi521 can also save environmental parameters such as illuminance and temperature, as well as leakage current and electric quantities like voltage, current, power factor, and harmonics. Whether you’re a professional electrician or just someone who wants to make sure their home or office is safe and up to code, the Combi521 is the ideal solution.


    PDF download  Combi Series Datasheet   PDF download   COMBI521 User manual

    The Combi521 is a multifunction electrical installation and EVSE safety testers with power quality analysis, that tests on electric systems in compliance with IEC/EN 61557-1 and therefore measurements of continuity of the protection cable, insulation resistance (with calculation of PI and DAR), overall earth resistance, RCDs type B, A and AC tripping time and current, line / fault impedance with calculation of prospective short circuit / fault current, phase sequence and conformity. COMBI521 also allows measuring and saving environmental parameters (illuminance, temperature), leakage current and electric quantities such as voltage, current, power factor, power and harmonics on single-phase systems.
    In combination with EV-TEST100, COMBI521 performs verification and control of electric car charging stations (EVSE) in accordance with IEC / EN 61851-1 and IEC / EN60364-7-722 standards.

    The instrument is provided with the innovative AUTO function: by selecting this function and only setting the value of RCD current, COMBI521 carries out tests of overall earth resistance, RCD tripping time and insulation resistance in a sequence. At the end of the test, the device shows all results with the indication of compliance or non-compliance with the standards with simple symbols OK or NOT OK.

    The internal memory allows saving the measures and subsequently transfer them onto the PC through the optical/USB connection. With HTAnalysis App, free to download for iOS and Android systems, COMBI521 is capable of transferring measured and recorded data onto tablets and smartphones, thus giving the operator the possibility to customize and share through HtCloud the result of their tests.

    Weight 2 kg


    Sequence of tests for the verification of electric columns With EV-TEST100 adapter
    AUTO test (Non-trip ground resistance, RCD, Insulation) in sequence
    Measurement of dielectric absorption ratio D.A.R.
    Measurement of polarization index P.I.
    Insulation with voltage 50, 100, 250, 500, 1000VDC
    Continuity of protective circuit with 200mA
    Tripping time and current of RCDs type B, A, AC Standard, Selective and Delayed up to 1A B type up to 300mA
    Non-trip earth resistance
    Loop/Line impedance, Phase-Phase, Phase-Neutral, Phase-PE
    Loop/Line impedance Phase-Phase, Phase-Neutral, Phase-PE with high resolution (0.1mΩ) With optional accessory IMP57
    Percentage voltage drop on the line
    Contact voltage
    Phase sequence
    Leakage current with optional clamp meter
    Measurement of Voltage, Current, Active, Reactive, Apparent Power
    Measurement of Cosphi, Power Factor
    Voltage and current harmonics up to the 49th with THD 49th
    Measurement of environmental parameters (°C,°F, %RH, Lux)
    Test with remote lead PR400
    Help on line on the display
    Internal memory for measured data saving
    Integrated WiFi connection and compatibility with HTANALYSIS App
    Optical/USB serial port for PC connection
    Mechanical protection
    Power supply
    Protection category CAT IV 300V
    Weight in grams (batteries included) 1200
    Size (LxWx H) (mm) 222x162x57
    •  17th edition
    •  CEI 64-8
    •  CE MARK
    •  IEC/EN61010-031
    •  IEC/EN61010-1
    •  IEC/EN61010-2-030
    •  IEC/EN61010-2-033
    •  IEC/EN61010-2-034
    •  IEC/EN61187
    •  IEC/EN61326-1
    •  IEC/EN61557-1
    •  IEC/EN61557-10
    •  IEC/EN61557-2
    •  IEC/EN61557-3
    •  IEC/EN61557-4
    •  IEC/EN61557-6


    Key Features:

    • AUTO sequence
    • Continuity of conductors
    • Insulation resistance
    • Polarity test
    • RCD type AC
    • A and B general and selective
    • Line/fault impedance and prospective short-circuit/fault current
    • Includes AUTO TEST Function (Loop Impedance, RCD Trip Time and insulation resistance)
    • MCB and fuses
    • Phase sequence
    • Voltage drop
    • Leakage and absorbed current (with optional HT96U Clamp Transducer)
    • Power quality analysis (with optional HT96U Clamp Transducer)
    • Environmental parameters
    • EVSE AUTO-sequence safety testing (optional EV-test100 EVSE adaptor)
    • Internal memory and connection to the PC
    • Wi-Fi connection to Android and iOS smartphones and tablets


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