Lightning and Surge Protection according to EN 50539

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DEHN PROTECTS © 2012 DEHN + SÖHNE / protected by ISO 16016 VAL general

REASON OF SEASONS GOD SUN CREATES SEASONS , SUNSHINE , CLOUDS , RAIN ,

SEASONS GOD SUN CREATES SEASONS , SUNSHINE , COULDS, RAIN , STORMS AND THUNDERSTORMS….

DEHN History DEHN + SÖHNE is an innovative, globally operating familyowned company with more

KULLU MANALI © 2012 DEHN + SÖHNE / protected by ISO 16016 VAL general

© 2012 DEHN + SÖHNE / protected by ISO 16016 VAL general short SEMINAR

Bijlee Mahadev @ 2480 m from sea level © 2012 DEHN + SÖHNE /

Lightning current damage to a meter distribution cabinet: Destroyed main circuit breaker and RCCB

Surge damage Destroyed electronic component © 2012 DEHN + SÖHNE / protected by ISO

Why is lightning protection essential ? Required by Indian and international lightning protection standard

Basics: Comparison of test currents inside the building 1 2 10/350 8/20 i max.

© 2012 DEHN + SÖHNE / protected by ISO 16016 18

Damage statistics photovoltaics Frequency of causes Damage which has been settled by a German

Damaged PV modules due to lightning strike A SOLAR PV PLANT IN INDIA ©

DAMAGES IN RAJASTHAN © 2012 DEHN + SÖHNE / protected by ISO 16016

Lightning Protection System as per National Building Code 2016 © 2012 DEHN + SÖHNE

NBC: Air Termination System CLEAR NO to RADIOACTIVE air terminals or other kind like

External lightning protection - Rolling sphere method used to design an air-termination system GJB

Design of the air-termination system separation distance s radius of the rolling sphere depending

Lightning protection system – separation distance kept with air-termination rods Source: D. Salansky Luma

© 2012 DEHN + SÖHNE / protected by ISO 16016

Galvanic coupling Lightning voltage of a system Class of LPS I II III -

Galvanic coupling Lightning voltage in a building 100 k. V 230 V 100 k.

Damaged inverters © 2012 DEHN + SÖHNE / protected by ISO 16016

Failures at Mahindra Susten, Kolayat © 2012 DEHN + SÖHNE / protected by ISO

Real Life Experience © 2012 DEHN + SÖHNE / protected by ISO 16016

Basics: Equipotential Bonding Concept CASE 1 10 KV 230 V RESULTS - ? CASE

Basics: Galvanic coupling Lightning voltage in a building 100 k. A 20 k. V

MEB* Lightning equipotential bonding LPZ 0 LPZ 1 utility water external lightning protection system

Lightning Protection System (LPS) External Lightning Protection Air-termination system- collection of Lightning Down-conductor system-

Take care of short circuit/ DC arcs ARC produce d by 12 V DC

I string 1 I string. Total I string 2 I string n LOAD CURRENT

Selection of surge protective devices Case 2: Type 2 SPD in Y-connection with 3

Surge Arrester DEHNguard® M YPV SCI Functional principle of the 3 -step d. c.

Surge Arrester DEHNguard® M YPV SCI Safe electrical isolation Circuit diagram SCI © 2012

Surge Arrester for PV MUST HAVE 1. APPROPRIATE RATING OF ISCWPV 2. Y Connection

PV Lightning and Surge PROTECTION REQUIREMENT 1. Good ELP design from professional as per

THANK YOU www. dehn. in My Coordinates: - Vikas. almadi@dehn. in / info@dehn. in

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REASON OF SEASONS GOD SUN CREATES SEASONS , SUNSHINE , CLOUDS , RAIN , WIND , STORMS AND THUNDERSTORMS…. . (SOURCE - ADITYAHRIDYA SROTRAM) A SOLAR PLANT HAS TO WITHSTAND ALL THE SEASONS IN EXPECTED LIFE TIME AND STILL SHOW THE DESIRED OUTPUT. © 2012 DEHN + SÖHNE / protected by ISO 16016

SEASONS GOD SUN CREATES SEASONS , SUNSHINE , COULDS, RAIN , STORMS AND THUNDERSTORMS…. . (SOURCE - ADITYAHRIDYA SROTRAM) ROI IS CALCULATED BASED UPON AN EXPECTED DEGRDATAION BUT DISASTERS ARE NOT COUNTED FOR— PROTECTION AGAINST RISKS OF NATURAL DISASTERS IS REQUIRED. © 2012 DEHN + SÖHNE / protected by ISO 16016

DEHN History DEHN + SÖHNE is an innovative, globally operating familyowned company with more than 100 years of experience and tradition. We are world leaders in the field of : • Lightning protection • Surge Protection • Human Safety © 2012 DEHN + SÖHNE / protected by ISO 16016

Lightning current damage to a meter distribution cabinet: Destroyed main circuit breaker and RCCB detail A t A l i a de d ail t e B detail B © 2012 DEHN + SÖHNE / protected by ISO 16016 VAL general short SEMINAR JAN 2016 13 02. 08. 13 / 6410_E_1

Why is lightning protection essential ? Required by Indian and international lightning protection standard (IS/ IEC 62305 -x including risk assessment) FOR HUMAN SAFETY AND PROTECTION OF EQUIPMENT/SERVICES Disastrous damages in the past in several areas in the world NATIONAL BUILDING CODE – NBC 2016 Requirement by Indian BIS standards and also in National Electrical Code © 2012 DEHN + SÖHNE / protected by ISO 16016 VAL general short SEMINAR JAN 2016 15

Basics: Comparison of test currents inside the building 1 2 10/350 8/20 i max. k. A 100 5 Q As 50 0, 1 2. 5 · 106 0. 4 · 103 100 k. A Wave form µs I (k. A) 80 k. A W/R J/ 60 k. A Standard 50 k. A 40 k. A IEC 62305 -1 1 20 k. A 2 20 µs 200 µs 350 µs 600 µs 800 µs 1000 µs t (µs) © 2012 DEHN + SÖHNE / protected by ISO 16016 VAL general short SEMINAR JAN 2016 16

Damage statistics photovoltaics Frequency of causes Damage which has been settled by a German solar insurance company between 2003 and 2005 according to quantity Source: Mannheimer Versicherung 2006 © 2012 DEHN + SÖHNE / protected by ISO 16016

External lightning protection - Rolling sphere method used to design an air-termination system GJB 230 / 400 V GJB = generator junction box SEB = service entrance box MEB = main earthing busbar © 2012 DEHN + SÖHNE / protected by ISO 16016 SEB MEB 5 th RE, India 2011 lightning protection photovoltaic 30. 09. 10 / S 6695 e_i

Design of the air-termination system separation distance s radius of the rolling sphere depending on the class of LPS air-termination rod protection angle shadow line 15° © 2012 DEHN + SÖHNE / protected by ISO 16016 5 th RE, India 2011 lightning protection photovoltaic 30. 09. 10 / 4025 e

Lightning protection system – separation distance kept with air-termination rods Source: D. Salansky Luma Plus s. r. o (CZ) © 2012 DEHN + SÖHNE / protected by ISO 16016 5 th RE, India 2011 lightning protection photovoltaic 04. 12. 09 / 6454_c

Galvanic coupling Lightning voltage of a system Class of LPS I II III - IV Current amplitude k. A 200 150 100 i î Reference: DIN EN 62305 -1 (VDE 0185 -305 -1) Wave form 10 / 350 µs ûE = î · Rst EB Rst © 2012 DEHN + SÖHNE / protected by ISO 16016 Example: ûE = 100 k. A · 1 = 100 k. V t

MEB* Lightning equipotential bonding LPZ 0 LPZ 1 utility water external lightning protection system Basics: Lightning equipotential bonding for incoming lines M gas heating system Cathodically protected tank pipe foundation earth electrode *MEB = main earthing busbar © 2012 DEHN + SÖHNE / protected by ISO 16016

Lightning Protection System (LPS) External Lightning Protection Air-termination system- collection of Lightning Down-conductor system- Discharge of Lightning Earth-termination system- Dissipation of lightning to ground Internal Lightning Protection Lightning equipotential bonding Surge protection Separation distance s must be observed to prevent dangerous spark formation © 2012 DEHN + SÖHNE / protected by ISO 16016 5 th RE, India 2011 lightning protection photovoltaic 30. 09. 10 / 4509 e

Selection of surge protective devices Case 2: Type 2 SPD in Y-connection with 3 varistors = ~ Open-circuit voltage of the generator UOC STC © 2012 DEHN + SÖHNE / protected by ISO 16016 Practical example:

Surge Arrester DEHNguard® M YPV SCI Functional principle of the 3 -step d. c. switching device SCI. . Short Circuit Interruption SCI The electrical isolation of an overloaded protection module by means of the integrated fuse allows safe replacement of protection modules without arc formation © 2012 DEHN + SÖHNE / protected by ISO 16016

Surge Arrester DEHNguard® M YPV SCI Safe electrical isolation Circuit diagram SCI © 2012 DEHN + SÖHNE / protected by ISO 16016 Can be used without backup fuse in all low-, medium- and highperformance photovoltaic systems due to the integrated fuse

Surge Arrester for PV MUST HAVE 1. APPROPRIATE RATING OF ISCWPV 2. Y Connection 3. SURGE DISCHARGE RATING of >= 10 KA at 8/20 microsec or 12. 5 KA 10/350 microsec 4. END OF LIFE- Proper disconnection of DC ARC through by pass FUSE © 2012 DEHN + SÖHNE / protected by ISO 16016

PV Lightning and Surge PROTECTION REQUIREMENT 1. Good ELP design from professional as per IS/ IEC 62305 2. Good Earthing design as per IEEE 80 3. Ensure Equipotential Bonding using SPDs at all AC and DC inputs 4. END OF LIFE- Proper disconnection of DC ARC through by pass FUSE 1. KEMA approved products and not funkies as bodygaurd © 2012 DEHN + SÖHNE / protected by ISO 16016