Lightning Protection Using LFA-M

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SARATH.C

LIGHTNING PROTECTION USING LFA-M

Over view

INTRODUCTION
WHAT IS A LIGHTNING STROKE?
TYPES OF LIGHTNING STROKES.
WHAT IS LFA-M?
BLOCK DIAGRAM
DESIGN OF LFA-M
HOW LIGHTNING AFFECTS OVERHEAD TRANSMISSION?
THE LFA-M PRINCIPLE
HOW CAN IT BE PROTECTED?
FUTURE EXPANSION
AVANTAGES & DISADVANTAGES
CONCLUSION

INTRODUCTION

Used for Lightning protection of medium voltage.
Great number of technical and economical advantages.
For lightning protection of Over head line against
1. Induced Over Voltage
2.Direct Lightning

LIGHTNING


What is LIGHTNING ?
Types of LIGHTNING STROKES
1. Direct Stroke
2.Indirect Stroke

DIRECT STROKE

Lightning discharge is directly from cloud to overhead line.
From the line, current path may be over the insulators down to the pole to the ground.
The over voltage set up due to the stroke may be large enough to flashover this path directly to the ground