Electrical safety

Electrical safety solutions refer to the set of instruments dedicated to verifying the compliance of electrical installations with safety standards (CEI 64-8, CEI 11-27, CEI EN 61557): insulation testers, PE continuity meters, RCD/differential test instruments, fault loop impedance meters, multifunction instruments for periodic verifications.

The range includes multifunction testers for complete CEI 64-8 verifications, megohmmeters for insulation measurements, RCD measurement instruments (sensitivity, intervention time), fault loop meters (Zs, Ipfc), earth meters and instruments for verifying protection coordination.

They are used by electrical installers and maintenance technicians, sector professionals (surveyors, engineers), inspection bodies, large industries (oil & gas, food, pharmaceutical), tertiary (offices, hospitals, hotels, schools) and in all initial and periodic verification activities of electrical installations.

According to CEI 64-8/6: continuity test of the protective conductor (PE), insulation resistance measurement, verification of circuit separation, fault loop impedance measurement, residual current device (RCD) test, verification of protection coordination and functional tests.

It is the measurement of resistance between active and protective parts, performed with a megohmmeter that applies a DC test voltage (250 V, 500 V, 1000 V, 2500 V or 5000 V based on the nominal voltage of the circuit). For LV circuits up to 500 V, 500 V is applied with a minimum required value of 1 MΩ.

It is the measurement of the total impedance of the fault circuit to earth (phase + PE + source), from which the prospective short-circuit current Ipfc is calculated and coordination with magnetothermic protections is verified. It is fundamental to ensure protection opening within the prescribed times.

Real sensitivity is measured (actual intervention current, must be between 50% and 100% of IΔn), intervention time (for general RCDs ≤300 ms, for instantaneous ones <40 ms at 5×IΔn) and the resulting contact voltage is also verified. They are mandatory parameters for installation certification.

The main ones are CEI 64-8 (LV electrical installations, transposing HD 60364), CEI 11-27 (electrical work, PES/PAV/PEI qualifications), CEI EN 61557 (safety test equipment), D.Lgs. 81/2008 (workplace safety, Italian transposition of EU Framework Directive 89/391/EEC), DM 37/08 (insta

They are qualifications provided by CEI 11-27 for personnel performing electrical work: PES (Expert Person) for live and dead work on MV/HV systems; PAV (Warned Person) for simple work under supervision; PEI (Suitable Person) specific qualification for live work. The appointment is formal and documented by the employer.

It is an instrument that integrates all the functions necessary for CEI 64-8 verifications in a single device: insulation test, continuity, Zs, RCD, phase sequence, voltage, earth measurement. It drastically reduces verification times and standardizes the test procedure, with direct printing of compliant reports.

Yes, there are multifunction testers specific for photovoltaic installations that measure: open-circuit DC voltage (Voc), short-circuit current (Isc), DC insulation resistance, I-V curve of the field, solar irradiation, module temperature, tests on interface devices according to CEI 0-21 and CEI 82-25.

Yes, CEI 11-27 and quality systems (ISO/IEC 17025) require annual calibration of instruments used for declarations of conformity or inspection verifications. The calibration certificate must be attached to the verification documentation.