• Sequence of tests for the verification of electric columns EV-TEST100 Insulation with voltage 50, 100, 250, 500, 1000VDC 1.200 Continuity of protective conductors with 200mA 225 x 165 x 75mm Tripping time and current of RCDs type B, A, AC Standard, Selective and Delayed up to 1A 25ª Tripping time and current of F-type RCDs Non-trip earth resistance CAT IV 300V Loop/Line impedance, Phase-Phase, Phase-Neutral, Phase-PE With optional accessory IMP57 Loop/Line impedance Phase-Phase, Phase-Neutral, Phase-PE with high resolution (0.1mΩ) With optional accessory IMP57 Measurement of percentage voltage drop on the line PR400 AUTO test (Non-trip ground resistance, RCD, Insulation) in sequence Contact voltage, Phase sequence Leakage current with optional clamp meter Measurement of Voltage, Current, Active, Reactive, Apparent Power (1) Voltage and current harmonics up to the 25th and THD% 25ª Protection category CAT IV 300V 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 Optical/USB serial port for PC connection Integrated WiFi connection and compatibility with HTANALYSIS App

The Combi521EV from HT Instruments is a multifunction electrical installation and EVSE safety tester with power quality analysis. This Combi521EV features an auto-sequence test function which allows the user to set values for testing parameters with the device indicating compliance or non-compliance with these standards. Being a combined verification instrument, COMBI521EV also carries out tests on electric systems in compliance with IEC/EN 61557-1 and 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. The COMBI521EV also allows for the measuring and saving of environmental parameters (illuminance, temperature), leakage current and electric quantities such as voltage, current, power factor, power and harmonics on single-phase systems.

COMBI521EV 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.

The internal memory allows saving the measures and subsequently transfer them onto the PC through the optical/USB connection. Thanks to the brand new HTAnalysis App, free to download for iOS and Android systems, COMBI521EV 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.

Automatic EVSE Safety Testing

• Check of the output voltage value
• Continuity check of the protective conductor
• Insulation resistance measurement
• Check the status:
• Standby (status A)
• Vehicle detected (status B)
• Mechanical interlock verification (status B)
• Ready (charging) (status C) with ventilation (status D)
• Fault simulation on the protective conductor (fault PE)
• Fault on CP signal (fault E)
• Global earth resistance measurement
• Measurement of RCD tripping time (type A, type B and type DD 6ma)

Electrical Installation Safety Test

• AUTOMATIC test sequence (no-trip ground resistance, RCD tripping time, insulation resistance)
• Continuity of protective conductors with 200mA
• Insulation resistance up to 1000V, with dielectric absorption ratio D.A.R. and P.I.
• Polarity test
• Type A, AC, B General and Selective RCD tripping time and current
• Line/Fault impedance, Phase-Phase, Phase-Neutral, Phase-PE (high res with optional IMP57)
• Coordination of MCBs and fuses
• Global earth resistance
• Phase sequence and conformity measurement
• Measurement of leakage current
• Measurement of electrical parameters in single-phase installations (V, A, W, VAR, VA, PF)
• Measurement of environmental parameters through external probes (HT52/05 and HT53/05)