Description Electrical Installation Multi-function Meter MPI-535 Technical Specifications Fault loop impedance measurements: Impedance measurement with 23 A current (40 A for Vp-p) Max. resolution 0.001 Ω Fault current-limiting resistor: 10 Ω Range of measurement voltages: 95 – 440 V | Frequencies 45 – 65 Hz Fast (up to 5 s) fault loop impedance measurement in systems protected with RCDs not tripping at IΔn ≥ 30 mA Automatic calculation of fault current based on nominal or measured voltage Differentiation of phase-to-neutral and phase-to-phase voltage Selection of installation protections and automatic evaluation of measurement results Testing of AC, A, F, B, and B residual current devices: Measurement of general, short-time delay and selective RCDs with rated residual currents of 10 | 30 | 100 | 300 | 500 | 1000 mA Measurement of touch voltage UB and protective conductor resistance RE without tripping the RCD The function of automatic measurement of all RCD parameters The shape of the input leakage current selected by the user: sinusoidal (start from rising or falling edge) | unidirectional pulsating (positive or negative) |unidirectional pulsating with direct current offset (positive or negative)|constant (positive or negative) Measurement of tripping current IA with rising current Measurement of tripping time tA with currents 0.5 IΔn, 1 IΔn, 2 IΔn, and 5 IΔn Detection of L and N phase swapping in a socket; does not affect measurements The capability of measuring tripping current IA as well as actual tripping time tAI with just one RCD trip Voltage measurements within the range of 95 – 270 V Measurement of insulation resistance: Measurement voltages: 50 V, 100 V, 250 V, 500 V, 1000 V Capability measurement in-socket utilizing UNI-Schuko adapter Measurement of insulation resistance up to 3 GΩ Sound signaling of five-second time intervals, facilitating the capture of time characteristics Meter protected against the presence of voltage on the object and the appearance of voltage during measurement Automatic discharge of the measured object’s capacitance after completion of the measurement Automatic measurement of all resistance combinations of 3-, 4- and 5-core cords utilizing the optional AutoISO-1000C adapter Earth resistance measurements: According to 3- or 4-lead technical method with 2 auxiliary electrodes According to the double-clamp method Internal power source with a frequency appropriate for 50 Hz or 60 Hz power network Soil resistivity measurements according to the Wenner method: Measuring range: 0.5 Ωm – 9.99 kΩm Distances between electrodes can be set in meters (1 – 30 m) or feet (1 – 90 ft) Low-voltage continuity testing of protective conductors and equipotential bonding: Measuring range according to EN 61557-4: 0.12 – 400 Ω, max. resolution 0.01 Ω Measurement of protective conductor continuity with current ≥200 mA in two directions Low-current measurement with sound signaling The voltage on open terminals: 4 – 9 V Automatic calibration of test leads – leads of any length can be used Additional functions of the meter: A quick check of correct connection of PE conductor using contact electrode Check of phase sequence and direction of motor rotation The capability of charging from the power grid or 12 V car lighter socket Tree-like memory structure with dynamic management Data transmission to PC via USB Other technical specifications: Type of insulation – double, as per EN 61010-1 and EN 61557 Power supply – Li-Ion rechargeable battery 11.1 V | 3.4 Ah | 37.7 Wh Operating temperature range 0 – 50°C The instrument meets the requirements outlined in the standards: EN61010-1 (general and particular requirements related to safety) EN61010-031 (general and particular requirements related to safety) EN61326 (electromagnetic compatibility) EN61557 (requirements for measurement instruments) HD 60364-6 (performance of measurements – checking) HD 60364-4-41 (performance of measurements – shock protection) PN-PN-E 04700 (performance of measurements – commissioning tests) EN 12464 (lighting workplaces) Calibration certificates are issued during the production process. New calibration certificates are available upon request at an additional cost.
