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Mors Smitt BV
Mors Smitt SPD Surge Protection Devices

Mors Smitt SPD Surge Protection Devices

Product catalog summary

Introduction
Mors Smitt, part of Wabtec Corporation, manufactures surge protection devices (SPDs) for industrial applications, crucial for protecting electronic systems from electromagnetic disturbances and overvoltage, adhering to IEC 62305 regulations.

Specifications and Standards
SPDs are designed to meet international standards such as IEC 61643-1 and EN 62305. They are categorized into different types based on application and protection level: Type 1 for boundaries of lightning protection zones 0 and 1, Type 1+2 for enhanced protection, and Type 2 for transient overvoltage protection at zones 1 and 2.

Product Range
Mors Smitt offers various SPDs, including lightning arresters with spark gaps, varistors, or gas discharge tubes, and specific series like NSP T12 for equipotential bonding and NSP-T2 for secondary switchboards.

Selection Guide
The selection process involves choosing the appropriate SPD type based on protection level, circuit, and application, ensuring coordination with existing systems considering factors like cable length and decoupling elements.

Applications
SPDs are used in industrial buildings, hospitals, schools, and structures with explosive risks, ensuring safety and reliability of electrical systems.

Reliability and Environmental Commitment
Mors Smitt emphasizes reliability, safety, and environmental consciousness, supported by ISO 9001:2008 and ISO 14001 certifications, with a commitment to continuous improvement and sustainability.

Conclusion
Mors Smitt's SPDs are integral to protecting sensitive electronic systems from overvoltage and electromagnetic disturbances, ensuring operational safety and reliability across various industrial applications.

Installation Procedures
SPDs should be installed at specific locations, such as subsidiary switchboards on every floor. If the distance from T1 exceeds 30 meters, SPD T2 must be installed. Decoupling elements are recommended for coordination between T2 and T3.

Standards and Compliance
Compliance with standards EN 61643-11, EN 62305, and CE marking indicates adherence to European safety and performance standards for lightning arresters.

Technical Data Highlights
Each product series includes specifications like nominal voltage, maximum continuous operating voltage, insulation resistance, lightning impulse current, temporary overvoltage, voltage protection level, response time, and lifetime expectancy.

Installation and Application
Arresters are designed for installation in main switchboards and are suitable for various applications, including residential houses, industrial structures, and agricultural buildings.

Gas Discharge Tubes and Varistors
Gas discharge tubes handle currents up to 100 kA, suitable for maintenance-free arresters. Varistors, composed mainly of ZnO, are effective in absorbing energy during impulse discharge currents.

Grounding and Protective Conductors
Grounding conductors must meet specific cross-section requirements and be protected against corrosion. Proper connections and dimensions are crucial for effective grounding.

Surge Protection Devices (SPDs)
Installation of SPDs is guided by international standards like IEC 61 643-11. SPDs are classified into stages and classes, with specific protection levels defined for different categories.

Usage of 1st Stage Surge Protection
Varistor arresters are suitable for the first stage of surge protection, but spark gap arresters are recommended for higher lightning current amplitudes.

Surge Arrester Selection
It is recommended to choose a surge arrester with a parameter approximately twice the value of the prospective follow current.

Usage of Surge Separating Inductors
Inductors with impedance between 2-15μH ensure coordination between stages of overvoltage protection.

Installation of 3rd Stage Surge Protection
The 3rd stage is crucial in a protection cascade, typically involving transient overvoltage protections, installed close to the protected appliance.

Catalog excerpts

Mors Smitt SPD Surge Protection Devices-1

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

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Mors Smitt SPD Surge Protection Devices-3

Mors Smitt Industrial Technology Surge protection devices (SPD)

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Mors Smitt SPD Surge Protection Devices-4

By focusing on product exellence for the industrial u^&fiarkpt. AA/P rnntrihutp tn a hpttpr pnvirnnmpnt. market, we contribute to a better environment, health and safety of all people involved

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Mors Smitt SPD Surge Protection Devices-5

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 for...

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Mors Smitt SPD Surge Protection Devices-6

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 surges...

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Mors Smitt SPD Surge Protection Devices-7

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 Applications...

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Mors Smitt SPD Surge Protection Devices-8

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 (16-120...

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Mors Smitt SPD Surge Protection Devices-9

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 elements....

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Mors Smitt SPD Surge Protection Devices-10

(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 kA)...

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Mors Smitt SPD Surge Protection Devices-11

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Mors Smitt SPD Surge Protection Devices-12

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Mors Smitt SPD Surge Protection Devices-13

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Mors Smitt SPD Surge Protection Devices-14

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

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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