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Tap-changers for power transformersProduct guide

2 TA P - CH A N G E R S FO R P OW E R TR A N S FO R M E R S PR O D U C T G U I D E

Our new generation of tap-changers utilize the most recent vacuum interrupter technology. This design philosophy allows the arcs during load commutations to occur in vacuum interrupters and not in the tap-changer oil. This greatly reduces the need for maintenance and creates the potential for using environmental-friendly insulating fluids. Final product dependability is ensured through extensive testing beyond international standards combined with decades of experience from developing technical solutions. ABB offers a full range of products for both high voltage and low voltage regulation. Our tap-changers are paired with robust, dependable motor drives that are configurable to meet a wide range of environmental conditions and customer specifications. From the compact BUL and versatile BUE for in-tank tap changers to the digitally controlled SMD with integrated Tap Logic Monitoring System (TLMS) for the type VRLTC tap-changer.

—01 On-load tap-changer type VRLTC

—02 On-load tap-changer type VUBB

—Vacuum on-load tap-changers

Type VRLTC Type VUBB Type VUCG Type VUCL

Application Single unit: three-phase star point, and three-phase fully insulated

Single unit: single-phase and three-phase star pointMultiple units: three-phase fully insulated

Maximum rated through-current

Three-phase star point 2000 A 600 A 800 A 1300 A

Three-phase fully insulated 2000 A 600 A 1800 A 2400 A

Highest rated lightning impulse/power frequency withstand to earth

200 kV / 70 kV 380 kV / 140 kV 1050 kV / 460 kV 1175 kV / 510 kV

Highest system voltage 34.5 kV 76 kV 300 kV 362 kV

Maximum rated phase step voltage 500 V 1600 V 3500 V 4500 V(6000 V possible in special cases – contact ABB for information)

Maximum number of operating positions

Linear 17 10 22 22

With change-over selector 33 19 35 35

Technology: Vacuum reactance Vacuum resistive Vacuum resistive Vacuum resistive

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—03 On-load tap-changer type VUCG

—04 On-load tap-changer type VUCL

4 TA P - CH A N G E R S FO R P OW E R TR A N S FO R M E R S PR O D U C T G U I D E

Unsurpassed simplicity, convenient accessibility and no requirements for special tools is the hallmark of our conventional tap-changers. ABB‘s customer-focused design philosophy has stood the test of time for over 100 years and resulted in designs with fewer parts and lower maintenance costs. In addition to increased reliability, tap-changers with fewer parts allow for considerable reduction in size and cost. Our tap-changers are matched with trustworthy, rugged motor drives that are configurable to meet a wide range of environmental conditions and customer specifications. From the compact BUL and versatile BUE for in-tank tap changer models to the fully integrated BUF for the type UZ on-tank tap-changer.

—05 On-load tap-changer type UZ

—06 On-load tap-changer type UBB

—Conventional on-load tap-changers

Type UZ Type UBB Type UCG Type UCL Type UCC/UCD

Application Single unit: three-phase star point, and three-phase fully insulated

Single unit: single-phase and three-phase star pointMultiple units: three-phase fully insulated

Maximum rated through-current

Three-phase star point 600 A 500 A 600 A 900 A 1600 AThree-phase fully insulated 600 A 500 A 1500 A 2400 A 1600 A

Highest rated lightning impulse/power frequency withstand to earth

650 kV / 275 kV 350 kV / 140 kV 1050 kV / 460 kV 1175 kV / 510 kV 1050 kV / 460 kV

Highest system voltage 145 kV 76 kV 300 kV 362 kV 300 kVMaximum rated phase step voltage 2000 V 1500 V 3500 V 4500 V 5000 VMaximum number of operating positions

Linear 17 14 22 22 18

With change-over selector 33 27 35 35 35

TA P - CH A N G E R S FO R P OW E R TR A N S FO R M E R S PR O D U C T G U I D E 5

—07 On-load tap-changer type UCG

—08 On-load tap-changer type UCL

—09 On-load tap-changer type UCC

Type DTU Type DTL Type DTW

Maximum rated through-current 1500 A (500 A per deck) 2000 A (1000 A per deck) 4000 A (1000 A per deck)

Highest rated lightning impulse/power frequency withstand to ground or between phases

650 kV / 275 kV 650 kV / 275 kV 1050 kV / 460 kV

Lightning impulse / power frequency withstand between adjacent contacts

650 kV / 275 kV 140 kV / 50 kV 400 kV / 130 kV

Maximum number of operating positions

7 7 6

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Our designs are proven solutions with decades of successful field experience. Their simplicity and ease of installation make ABB‘s de-energized tap-changers the preferred solution by transformer manufacturers worldwide. Multiple deck arrangements make our designs the most space saving

—10 De-energized tap-changer type DTU

—11 De-energized tap-changer type DTL

—12 De-energized tap-changer type DTW

—De-energized tap-changers

de-energized tap changers available in the market. Both bridging and linear options are available with ratings up to 4000 A and 1050 kV BIL. And, with little to no required maintenance, our designs have proven to be an ideal solution to both utility and industrial customers.

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We are committed to stand behind our products for as long as they are in operation. Product support, documentation and training is therefore essential. This includes immediate availability of parts for all models, 24-hour access to support personnel and the existence of a global reporting network.Some of our UC tap-changer types are possible to upgrade without the need to rebuild; they can be upgraded with vacuum technology as quickly and as easily as performing a normal overhaul. In many cases this makes it possible to increase the tap-changers nominal load and at the same time benefit from all the advantages associated with vacuum technology.

—13 Upgrading conventional diverter switch UCG to vacuum type VUCG.

—Life cycle support

—ABB ABComponents SE-771 80 LudvikaSwedenPhone: +46 240 78 20 00E-mail: sales@se.abb.com

ABB Inc.1133 South Cavalier DriveAlamo, Tennesseee 38001, USAPhone: +1 800 955 8399 +1 731 696 5561

www.abb.com/transformercomponents

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© Copyright 2018 ABB. All rights reserved. Specifications subject to change without notice.