SPD - Surge Protection Devices
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Mors Smitt Industrial Technology Surge protection devices (SPD) Surge arresters • Lightning arresters Mors Smitt

Mors Smitt Industrial Technology Surge protection devices (SPD)

By focusing on product exellence for the industrial market, we contribute to a better environment, health and safety of all people involved

Mors Smitt Industrial Technology Mors Smitt has been manufacturing relays since 1902. Our wide portfolio is focused on market sectors like power generation & distribution, factory automation, petro-chemical and water treatment plants and general industrial requirements. Production is flexible, standards unforgiving. Many units are tailored to specific client requirements. All products go through extensive testing processes with both hardware and production methodology approved to the highest standards. Surge protection devices Surge protection devices are part of the portfolio of Mors Smitt...

Lightning arresters type 1 are used at the boundaries of lightning protection zone 0 and 1. (according to the standards IEC 1312-1 and EN 62305). These arresters are designed for installation in the main switchboard of an application. We offer three types of lightning arresters: Equipped with spark gap Equipped with varistor Equipped with gas discharge tube The combined type 1 + 2 lightning arresters are used at the boundaries of lightning protection zones 0 and 1. (according to IEC 1312-1 and N 62305). They are E used for lightning current equipotential bonding and elimination of witching...

Symbols used in this brochure Class Protection device type 1 according to EN 61643-11 and IEC 61643-1 Protection device class 1 according to IEC 61643-1 Combination protection device TYPE 1 and TYPE 2 according to EN 61643-11 and IEC 61643-1 Combination protection device Class 1 and Class 2 according to IEC 61643-1 Protection device type 2 according to EN 61643-11 and IEC 61643-1 Protection device class 2 according to IEC 61643-1 Protection device type 3 according to EN 61643-11 and IEC 61643-1 on request Protection device class 3 according to IEC 61643-1 Lightning protection zones...

Selection guide - LPL I Step 1 (object selection) C lassification of typical objects System No. of phases SPD type Circuit Type 1 - at boundaries Coordination of LPZ 0-1 T1 and T2 (lightning arrester) installation <5m Substation Switchboard (kWh) Main switchboard 5 metres cable or decoupling element PI-L (16-120 A ) Main switchboard Coordination of NSP with SPU doesn‘t require separation by longer cable or by decoupling element. (The installation of SPD T2 is necessary, if the length is > 30 m from T1) Substation Switchboard (kWh) Main switchboard 5 metres cable or decoupling element PI-L...

Type 2 - at boundaries of LPZ 1-2 (surge arrester) Installation Subsidiary switchboard, switchboards on every floor of the object or in every control panel NSP-T2-275 Subsidiary switchboard, switchboards on every floor of the object or in every control panel NSP-T2-275/3+0 If the distance from T1 is > 30 m. it is necessary to install SPD T2 5 meters of cable or decoupling element PI-L(16-120 A) (Decoupling elements(PI-L) are installed for coordination of T2 and T3. These protect SPD T3 against destruction. If there is a distance between T2 and T3 < 5 m, it is necessary to use decoupling...

(object selection) C lassification of typical objects System No. of phases SPD type Circuit Type 1 - at boundaries Coordination of LPZ 0-1 T1 and T2 (lightning arrester) installation <5m 5 metres cable or decoupling element PI-L (16-120 A ) Substation Switchboard (kWh) Main switchboard 5 metres cable or decoupling element PI-L (16-120 A ) Main switchboard Coordination of NSP with SPU doesn‘t require separation by longer cable or by decoupling element. (The installation of SPD T2 is necessary, if the length is > 30 m from T1) Buildings with considerable level of protection LPL II ( Iimp = 75...

Type 2 - at boundaries of LPZ 1-2 (surge arrester) Installation Subsidiary switchboard, switchboards on every floor of the object or in every control panel NSP-T2-275 Subsidiary switchboard, switchboards on every floor of the object or in every control panel NSP-T2-275/3+0 If the distance from T1 is > 30 m. it is necessary to install SPD T2 5 meters of cable or decoupling element PI-L(16-120 A) (Decoupling elements(PI-L) are installed for coordination of T2 and T3. These protect SPD T3 against destruction. If there is a distance between T2 and T3 < 5 m, it is necessary to use decoupling...

(object selection) C lassification of typical objects System No. of phases SPD type Circuit Type 1 - at boundaries Coordination of LPZ 0-1 T1 and T2 (lightning arrester) installation <5m 5 metres cable or decoupling element PI-L (16-120 A ) Substation Switchboard (kWh) Main switchboard 5 metres cable or decoupling element PI-L (16-120 A ) Main switchboard Coordination of NSP with SPU doesn‘t require separation by longer cable or by decoupling element. (The installation of SPD T2 is necessary, if the length is > 30 m from T1) Buildings with considerable level of protection LPL III and IV (...

Type 2 - at boundaries of LPZ 1-2 (surge arrester) Installation Subsidiary switchboard, switchboards on every floor of the object or in every control panel NSP-T2-275 Subsidiary switchboard, switchboards on every floor of the object or in every control panel NSP-T2-275/3+0 If the distance from T1 is > 30 m. it is necessary to install SPD T2 5 meters of cable or decoupling element PI-L(16-120 A) (Decoupling elements(PI-L) are installed for coordination of T2 and T3. These protect SPD T3 against destruction. If there is a distance between T2 and T3 < 5 m, it is necessary to use decoupling...

Application schematic Industrial application Type 3 Data and communication lines Type 3 Alarm and fire control system Type 3 Wall outlet Main switchboard Subdistribution switchboard Telephone central Control computer Securety system Sensor Server computer Uninterrupted power supply