This module extends Storm base units by adding inputs for direct measurement of electrical quantities in AC electrical networks. Along with the base unit, it thus functions as a measuring converter for electrical quantities with a highly precise measurement and a broad range of measuring and indication functions. Includes functions for special technical measurements and the ability to use modern measuring sensors. -> Basic Characteristics • extension modules for use with Storm base units and their software only • measurement of basic and derived electrical quantities in 3-phase 50 and 60 Hz AC networks with accuracy from 0.5 %, highly precise frequency measurement • direct and indirect measurement, the possibility to use measuring transformers and sensors (resistive and capacitive dividers, Rogowski coils) • power grid fault indication and recording • other measuring, automation and regulation functions (e.g. synchronized switching, power, voltage and frequency regulators and more) -> Typical Use • compact solution for a Storm terminal setup involving a Storm-00 or Storm-01 base unit extended by a multifunction measuring converter for electrical quantities • measuring and indication in electrical networks, structures and equipment of all voltage levels (HV, MV and LV) • fault measurement and indication in power and equipment distribution switchboards • in standard TECHSYS solutions for monitoring, management and automation of a MV load-break switch and many more • measuring unit with specific requirements for measuring functions for monitoring equipment (e.g. measuring voltage at transformer bushings) • in terminal setups as a measuring, automation, and regulation unit with user-defined functions -> Properties • broad range of input circuit types and connections and configuration of nominal and maximum values • voltage measurement inputs: (3+1)-phase, direct measurement of 230/400 V AC, 57/100 V AC measuring transformer, voltage sensors -resistive and capacitive dividers • single-phase voltage measuring input can optionally be used for example to measure the zero voltage component or to measure voltage on the other side of a breaker or disconnector (e.g. for synchronized switching) • current measurement inputs: (3+1)-phase, 1 or 5 A AC measuring current transformer, external measuring current transformers with solid or split cores, current sensors - Rogowski coils • single-phase voltage measuring input can for example be used to measure the zero current component • measured values: phase to ground and phase to phase voltage, phase currents, phase and overall active and reactive power, power factor, frequency • fault indication with a broad range of functions and parameters: ANSI codes of implemented functions: 50, 51,67, typical configuration: short-circuit and overcurrent (time-dependent or independent, directional or non-directional), earth fault (directional or non-directional), and current asymmetry • recording of measured values, binary I/O status and internal function status triggered by a change in the value of the defined parameter -> Build and Selected Parameters • the module permits cascade connection of another extension module from the Storm series • installation on a 35 mm distribution board DIN rail, IP20 protection • maximum ambient humidity 95 %, without condensation • the module meets the same EMC standards for emission and resistance as the Storm-00 and Storm-01 base units Headquarter Prague, Brezinova 640/3a, 186 00 Praha 8, Czech Republic Branch Office Ceske Budejovice, U Vystaviste 1485, 370 05 Ceske Bu