Transformer Components Transformer Components Vacuum Load ...

Lars Lidén, Marketing Manager Components, Transformer Days 2011

Transformer Components Vacuum Load Tap Changers © ABB Group July 11, 2011 | Slide 1

ABB vacuum load tap changers Wh vacuum lload Why d ttap changers? h ?

© ABB Group June 7, 2011 | Slide 2

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Reduced maintenance need

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Personal safety

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Higher transformer ratings

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Environmentally friendly

ABB vacuum load tap changers Wh ABB vacuum lload Why d ttap changers? h ? 

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Longest experience on the market 

ABB produced first tap changer in the world >100 years ago

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Technology leader: 400 kV, 800 kV and HVDC

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Innovation leader: Plug and Play concept

Leading product and application expertise 

Expertise ranging from power system network to atomic research h

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Vacuum interrupter research and development resources

Evolution, not a revolution 

© ABB Group June 7, 2011 | Slide 3

Increased lifetime: up to 300,000 operations

ABB vacuum load tap changers Wh ABB vacuum lload Why d ttap changers? h ? 

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Designed with focus on end user 

Simple, reliable designs

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Easy inspection process

Unique testing capabilities 

© ABB Group June 7, 2011 | Slide 3

Developed test circuit to reflect actual stresses in operation

ABB vacuum load tap changers ABB P Portfolio tf li

© ABB Group July 11, 2011 | Slide 5

ABB vacuum load tap changers T Type VUCG

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© ABB Group June 7, 2011 | Slide 2

Plug and Play solution for all UCG delivered since 1977 enabling easy upgrade from conventional in-tank tapchangers to vacuum in less than one day.

ABB vacuum load tap changers T Type VUCG

© ABB Group July 11, 2011 | Slide 7

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300,000 operations between inspections

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Vacuum Interrupter lifetime of 600,000 operations ti

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Diverter switch mechanical lifetime 1,200,000 operations

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Testing far beyond any available international standard to verify and ens re lifetime reliability ensure reliabilit

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Robust and safe design 

Clean cover with Cl ith no shaft h ft system t tto dismantle and shaft system outside diverter switch

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Less parts compared with brands on the market

ABB vacuum load tap changers T Type VUCG

© ABB Group July 11, 2011 | Slide 8

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Redundant electrical contact system

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Rotating R t ti mechanical h i l systems minimize wear

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Mechanical synchronization of vacuum interrupters

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Maintenance free mechanical h i l system t

ABB vacuum load tap changers T Type VUBB

© ABB Group June 7, 2011 | Slide 6

ABB vacuum load tap changers T Type VUBB

© ABB Group July 11, 2011 | Slide 10

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Currently undergoing final type testing.

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Testing far beyond any available i t international ti l standard t d d tto verify if and d ensure lifetime reliability

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Robust and safe design

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Unique, patent-pending solution for onsite inspection without dismantling mechanism

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Designed to reduce transformer foot p print.

ABB vacuum load tap changers T Type VRLTC

© ABB Group June 7, 2011 | Slide 8

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On-tank reactance type load tap changer

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C Current t ratings: ti 1 1,500 500 and d2 2,500 500 A

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BIL ratings: 250 and 400 kV BIL

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Firstt major Fi j iinnovations ti iin LTC d design i for reactance type LTC’s since vacuum technology from Westinghouse and G General l Electric El t i iin th the llastt century t 

Type DSMD™ digital servo motor drive d e syste system

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TLMS™ Module – monitors, decides, alerts, warns and records

© ABB 22/07/2009 | Slide 12