Presented by : - Philip Risi 2012 Live Line Live Line Technology Technology Live Line Arrestor (Firewall) Transformer Combi Unit (Transformer Protection) LIVE LINE TECHNOLOGY T (018) 468 3344 F (018) 468 3303 Distribution Line Lightning protection 3kv≤33kv
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Presented by : - Philip Risi 2012
Live Line TechnologyLive Line Technology
Live Line Arrestor (Firewall)
Transformer Combi Unit (Transformer Protection)
LIVE LINE TECHNOLOGYT (018) 468 3344F (018) 468 3303
Distribution Line Lightning protection 3kv≤33kv
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1. Transformer Combi Unit– Change the arrestor & Fuse from ground
LLT Arrestor inserted upside down.
Easy insertion .
Hook & hinge exposed for easy connection.
1. Transformer Combi Unit– Change the arrestor & Fuse from ground
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1. Transformer Combi Unit– Change the arrestor & Fuse from ground
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1. Eliminate fuse blows & save Xfr’s
Surge Arrestor
Combi Configuration
The surge arrestor is connected in
parallel with the Fuse.
The surge arrestor protects both the
fuse and transformer.
Nuisance fuse blows eliminated.
Transformer protection enhanced.
Customer
Improved Service level.
Downtime eliminated.
Live Line capabilities.
Transformer
Prevention maintenance (level 4)
Circuit diagram of the Combi Configuration
Fuse
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Eliminate the outage time :• Safety check & risk assessment. = 1 min.• Phoning control required for opening links at pole nr. +/- = 2 min.• Wear the FAS (Fall arrest system). = 2 min.• Install the portable earth kit. = 5 min.• Ladder, safety equipment climbing of pole. = 5 min.• Proceed to change the spare surge arrestor = 20 min.• Close links and finalize the safety checks.
Total time saved to replace arrestor = +/- 30 min
2. 2. SAIDI – Reduce time to replace arrestor
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Drop Out surge arrestors – Drop Out surge arrestors – InstallationsInstallations Live line arrestors protecting a high lightning dense area. (improving the insulation co-ordination of the overhead lines.)
Spent arrestor in needs of replacing. No outage needed, with a link stick.
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3. Firewall – Operation
Function of the Live Line Surge Arrestor :
To prevent over-voltage caused by lightning transients or surges.
On breakdown of the MOV blocks, the system frequency disconnects the faulty surge arrestor via the the GLD (Ground lead disconnector).
The surge arrestor, falls into the open position and can be replaced live line.Replace with a new unit
Polymer Housings
Metal Oxide Blocks ZnO
G.L.D
1. 2. 3.
Preventative maintenance (level 2)
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3. Firewall – Installation Methodology
Damage
Line Protection
Best protection
Preventative maintenance (level 2)
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3. Firewall & Combi unit
Combi unit set
Firewall setLine surge protection (draining incoming transients) in high lightning dense/intense areas)
End
The end – Combi protection
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