SURGE PROTECTION SYSTEMS
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PRESENTATION SCHIRTEC Company is located in Vienna-Austria and specialized in producing absolute solutions for "Lightning Protection, Earthing and Surge Protection Systems". SCHIRTEC Company manufactures E.S.E. (Early Streamer Emission) Active Lightning Conductors Systems & Equipments using the latest advanced technology and is dealing in surge protection equipments with own label. SCHIRTEC 's customer's satisfaction is our greatest concern. To our opinion, we have already achieved customer´s satisfaction, because we are always offering first-class quality products to fair prices, and the...

SURGE PROTECTION WHICH SURGE PROTECTION UNITS CAN WE USE FOR DIFFERENT ZONES? Impulse Test Classification Class I tests - tests carried out with the nominal discharge current In(8/20), the 1,2/50µs voltage impulse and the maximum impulse current I imp (10/350) for class I test . Class II tests - tests carried out with the 1,2/50µs voltage impulse, with the nominal discharge current I n (8/20) and the maximum discharge current I max (8/20) for the class II test. Class III tests -tests carried out with the combination wave (1,2/50µs; 8/20µs) In the chart shown below there are typical courses...

SURGE PROTECTION General distribution of lightning current when an object is thunderstruck, principle of L.V. power supply network protection thanks to cascaded 3-stage protection Protection system of low voltage power supply network including lightning current arresters and surge arresters of the SPD must be able to discharge lightning currents or their substantial parts without their damage. It is generally recommended to come out from the ohmic strike of the building earthing, pipeline, power distribution system and so on for the purpose of establishing current distribution of the...

SURGE PROTECTION Where an individual evaluation is not possible, it can be assumed that ; - 50% of the total lightning current Iimp =200 kA (10/350)... IS1 =100 kA (10/350) enters the earth termination system of the LPS (Lightning Protection System ) of the structure considered - 50% of Iimp =200kA (10/350)IS2=100kA (10/350) is distributed among the services entering the structure (external conductive parts, el. power, communication lines, etc.)The value of the current flowing in each service Ii is given by Is/n,where n is the number of the above mentioned services (see the above figure.)...

SURGE PROTECTION The above described segmentation of the protected object into protection zones gives possibilities of active protection of the low voltage power network thanks to insertion of the protection SPDs (usually at the zone boundary LPZ 0 1 and LPZ 1 2) and other protection SPDs at the zone boundary LPZ 2 3. Standardly it is recommended to insert 2nd stage protection surge arrester class II tested by testing impulse Imax(8/20). At the boundary of LPZ 2 3 and subsequently along the consequential circuit there is also recommended to shoulder after every cca 10m by so-called 3rd...

SURGE PROTECTION School application fax, modem, telephone central antenna lead-in socket circuits main switchboard Main switchboard Apartment block application Subdistribution switchboard Server computer Security system Telephone central Power supply SCO-9 SCO-3GN Application : main switchboard, in front of the S45 electrometer and between L/N system TN-S, L/PEN system TN-C or SB main switchboard, behind the electrometer and between L/N system TN-S, L/PEN system TN-C SSPU3 SBN80 main switchboard, between N/PE only SCF subdistribution switchboard on each floor, between L/N system TN-S, L/PEN...

SURGE PROTECTION Home and office application SZS 1.1T HR - Main switchboard R - Subdistribution switchboard TU - Tel. central C - Security central S - Server computer 7

SURGE PROTECTION INSULATION LEVEL DROP DETECTORS The Insulation Level Drop Detectors produced by Schirtec company enable an easy application for their users in IT power supply systems mainly in the engineering industry, metallurgy and in hospitals. Monitoring of IT-systems in hospitals Monitoring of IT-systems in traffic engineering Insulation Level Drop Detectors SIS are applied in the special workplaces and also in the common departments of hospitals. SIS 71 : 75 devices are used for these applications. The protection of passengers health is the main viewpoint of insulation level...

This range of lightning arresters is mainly intended for applications in unmeasured parts of electrical installation within the Lightning Protection Zones Concept at the boundaries LPZ 0A(B) 1 (according to IEC 1312-1 and IEC 62305). The lightning arrester is constructed as an encapsulated multiple cellular carbon spark gap with high values of self-extinguished follow currents. Types S45 ,S55 and S50-50 are designed for the protection of phase bus bars of L.V. supply system (L/N), (L/PE) and (L/PEN) .

POWER SUPPLY SYSTEMS LIGHTNING ARRESTER CLASS I Multiple chamber carbon spark gap S45, S55, S50-50, S50-16 or S50-3* Single carbon spark gap S100 or gas discharge tube SBN100** Main equipotential bus bar Grounding wires for arresters Main back-up fuse of service main Recommended back-up fuse 315AgL/gG (only if the main back up fuse F1 is fitted with back up fuses > 315 AgL /gG ) Grounding of the equipment Grounding system * For IT systems without outlet we use lightning arresters dimensioned for phase -to-phase voltage. ** For IT systems we use a special modification of gas discharge tubes...

POWER SUPPLY SYSTEMS LIGHTNING ARRESTER CLASS I It is a complex range of lightning arresters, class I according to IEC 61643-1 and EN 61643-11 (1st stage protection). To be placed into the main switchboards at the beginning of electrical supply into a building. The recommended use is in the Lightning Protection Zones Concept at the boundaries of LPZ 0A(B)-1 according to IEC 1312-1 and IEC 62305 in low voltage power supply systems TNC and TNS, but it can be used also in TT and IT systems. SB* contains a combination of highly efficient varistors ZnO with maximum discharge ability...