We want Clean Silent & Green Power
Power T&D and Quality
Lightning and Surge Transfer to Systems
approx. 1,900,000 lightning strokes in year* ABC Company
MCR
data telephone
110 kV 400/230 V
*Ref.: BLIDS, Siemens AG, Analysis of 2001 - 2005
Lightning and Surge Protection
mobile phone TV
4
Design for Protection from Lightning & Surge
Equipment and Witness of Surge
Causes of Surges due to Lightning Discharges
Direct lightning strike:
2b
1 Striking of external lightning protection
2a
system, process structure (in industrial plants), cables etc.
Voltage drop at the implse 1a earthing resistance R st
1
Induced voltage 1b in loops
L1 L2 L3 PEN
Distant lightning Strike: 2a
2c
2b
1b
IT network
20 kV
Strike into mediumvoltage overhead lines
Surge travelling waves on overhead lines due to cloud-to-cloud lightning
Rst 1a
power supply Lightning and Surge Protection
Fields of the 2c lightning strike
7
Galvanic Coupling Lightning Voltage for a System Lightning Prot. Level I II III - IV
Current amplitude kA 200 150 100
i î
Ref.: IEC 62305
wave form 10 / 350 µs
ûûEE == îî ·· RRstst
EBB
Rst
Example: ûE = 100 kA · 1 = 100 kV Surge Protection
t
Influences on Electrical Installations Causes of Surges Direct lightning strike (LEMP)
• Galvanic coupling • Inductive / Capacitive coupling
Indirect lightning strike • Conducted partial lightning currents • Inductive / Capacitive coupling
Surges (SEMP) M
• • • •
Switching operations Earth faults / Short circuits Tripping fuses Parallel installation of power and IT conductor systems Lightning and Surge Protection
9
Lightning Current Parameters according to IEC 62305 Parameters
Lightning Protection Level I
I (kA) W/R (MJ/ď —)
200 10
II
III-IV
150
100
5.6
2.5
Qs (As)
100
75
50
Q long (As)
200
150
100
Lightning and Surge Protection
10
IEC 62305 International lightning protection standard IEC 62305-1 62305-1 IEC
General Principles Principles General
IEC 62305-2 62305-2 IEC
Risk Management Management Risk
IEC 62305-3 62305-3 IEC
Physical Damage Damage to to Physical Structures and and Life Life Hazard Hazard Structures
IEC 62305-4 62305-4 IEC
Electrical and and Electronic Electronic Electrical Systems Systems
Lightning and Surge Protection
11
IEC 62305 International lightning protection standard 62305-1 62305-1 GeneralPrinciples Principles General
62305-2 62305-2 Risk Risk
62305-3 62305-3 Physicaldamage damage Physical andlife lifehazard hazard and
62305-4 62305-4 Electrical-and and Electricalelectronicsystems systems electronic
Lightning and Surge Protection
12
IEC 62305-3 Physical damage to structures and life hazard Introduction a) External LPS (air termination system, down contuctor‘s, earth termination system). b) An internal LPS (preventing dangerous sparking using equipotential bonding or separation distance (hence electrical insulation) between external LPS and internal metalwork.
Lightning and Surge Protection
13
IEC 62305-4 Electrical- and electronic systems within structures Scope: Provides information for design, installation, inspection, maintenance and testing of a LEMP protection system (LPM) for electrical and electronic systems within a structure able to reduce risk of permanent failure due to LEMP. Basic protection measures in a LPM system
– Earthing and Bonding – Magnetic shielding and line routing – Direct strike and surge protection Lightning and Surge Protection
14
Standardisation of Surge Protective Devices IEC 61643-1 61643-1 IEC
PerformanceRequirements Requirementsof ofSurge SurgeProtective ProtectiveDevices Devices Performance forLow-Voltage Low-VoltagePower PowerSupply SupplySystems Systems for
Class II Class Protection Against Against Protection Direct Lightning Lightning Direct Currents Currents (Lightning Current Current (Lightning Arrester) Arrester)
Class IIII Class Protection Against Against Protection Indirect Lightning Lightning Indirect Effects Effects (Surge Arrester) Arrester) (Surge
Class III III Class Protection Against Against Protection Switching Switching Overvoltages Overvoltages (Surge Arrester) Arrester) (Surge
(10/350 µs) µs) (10/350
(8/20 µs) µs) (8/20
(1.2/50 µs; µs; 8/20 8/20 µs) µs) (1.2/50
Lightning and Surge Protection
15
Noise and Instalaton Guidence
Design Guide
Design Guide
External Lightning Protection System air termination system
down conductor
earth termination system
Lightning and Surge Protection
19
EMC-Orientated Lightning Protection Zones Concept LPZ 0 Lightning equipotential bonding LPZ 0 LEMP
AA
air-termination system
LPZ LPZ 00 BB M
LPZ LPZ 00 AA
LPZ LPZ 11 downconductor system
LPZ LPZ 00 BB power supply system IT system
LEMP
spatial shield air ventilation
Lightning current arrester (SPD Type 1) Local equipotential bonding Surge arrester (SPD Type 2, SPD Type 3)
terminal device LPZ LPZ 33
LPZ LPZ 22
LEMP
LPZ LPZ 22
SEMP
LPZ LPZ 11
LPZ LPZ 00 CC
steel reinforcement
Lightning and Surge Protection
foundation earthing electrode 20
Lightning Equipotential Bonding for incoming Lines lightning equipotential bonding EBB
LPZ LPZ 11 external lightning protection system
LPZ LPZ 00 power supply
water M
gas heating
cathodic protected tank pipe foundation earthing electrode Lightning and Surge Protection
21
What is a Lightning Current Arrester installed into a Power Supply System supposed to perform? • Discharging of lightning currents several times without desctruction of the equipment. = Discharge capacity 100 kA (10/350 µs) • Providing of a lower voltage protection level than the voltage strength of the downstream installation. • Extinguishing or limiting of mains follow currents. • Ensuring of the energy coordination to downstream surge protective devices and/or terminal equipment. Lightning and Surge Protection
22
1 Test Impulse Curent for Lightning Current Arresters 2 Test Impulse Current for Surge Arresters 1
2
10/350
8/20
i max. [kA]
100
5
Q [As]
50
0.1
W/R [J/]
2.5 · 106
0.4 · 103
Standard
IEC 62305-1
EN 60060-2
100 kA
Wave form µs] I (kA) 80 kA
60 kA 50 kA 40 kA
1
20 kA
2 20 µs
200 µs
350 µs
600 µs
800 µs
t (µs) Lightning and Surge Protection
23
1000 µs
What is a Surge Arrester installed into a Power Supply System supposed to perform? • Discharging of impulse currents (8/20 µs) several times without destroying the terminal equipment = 20 x nominal discharge capacity 5 - 20 kA (8/20 µs) • Voltage protection level lower than the electrical strength of the downstream terminal devices = Voltage protection level 1,500 V
Lightning and Surge Protection
24
Surge Protection Is A Must
Follow Safety in Electrical Instalation Shocks
An Arcing Fault is the flow of current through the air between phase conductors or phase conductors and neutral or ground. Concentrated radiant energy is released at the point of arcing an a small amount of time resulting in Extremely High Temperature.
Surge in Systems and Result
Surge in DC Application
Protection of Equipments from Surge
Instalation Guide Surge Protection
Equipment & Protection
Total Building Lightning and Surge Protection Guide
Surge Components
Surge Components
Surge Components
Selection Guide
Surge and Noise
Sikhana to Padega Hi Follow Electrical Safety
External/Internal Surge Source
ESE Installation Guidence
ESE AT with radius protection form 32 mtr to 107 mtr. DMC Insulator .
GI/FRP Mast .
Down Conductor Copper / Copper Cadmium Cable 70 sq. mm Copper Bonded Ground Earthing
Early Streamer Lightning Protection(1) Advance Systems for ProtectionNFC 17-102
Early Streamer Lightning Protection(2) Advance Systems for ProtectionNFC 17-102
Grid/Earth Mat Design as per IEEE80
RDSO S&T Spec forEarthing Design and Solution
Earthing Design and Solution
Copper Clad Steel Advantages as Per IEEE80
Most Efficient Joint Process/Fail Proof as per IEEE 837
It is efficient and superior to all existing surface –to-surface mechanical retention connectors.
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