Choose your region and language

Global
Argentina
Australia
Austria
Bahrain
Brazil
Bulgaria
Canada
Chile
China
Colombia
Czech Republik
Denmark
Egypt and North Africa
Finland
France
Germany
Greece
Hungary
India
Indonesia
Iraq
Ireland
Italy
Japan
Jordan
Kuwait
Malaysia
Mexico
New Zealand
Norway
Oman
Pakistan
Panama
Peru
Philippines
Poland
Portugal
Qatar
Saudi Arabia
Singapore
Slovakia
South Africa
South Korea
Spain
Sweden
Switzerland
Taiwan, China
Thailand
Türkiye
Ukraine
United Arab Emirates
United Kingdom
United States
Vietnam
English
Spanish
English
German
English
Portuguese
English
English
French
Spanish
Chinese
Spanish
English
English
English
English
French
German
English
English
English
English
English
English
Italian
Japanese
English
English
English
Spanish
English
English
English
English
Spanish
Spanish
English
Polish
English
English
English
English
English
English
English
Spanish
Swedish
German
French
Italian
English
English
English
English
English
English
English
English
Go

Menu

The UBB is a selector switch type of on-load tap-changer. It is designed for mounting inside of the transformer tank, but many of the features and benefits our customers appreciate from our UZ on-tank technology. This combination of the best qualities from both types of tap-changers makes the UBB model unique in its design and operation. Primarily designed for small and medium-sized transformers, the unit is compact and cost-effective compared to equivalent diverter switch types of tap-changers.

Product scope

  • Base technology: Conventional, resistance, in-tank, selector switch
  • Common applications: Network, special

 

  Tap-changer placed in the neutral point of the winding Other placements of the tap-changer
Highest voltage for equipment (Um) 76 kV 76 kV
Max lightning impulse (BIL) 350 kV 350 kV
Max current
3-phase
1-phase (one tap-changer/phase)
500 A
500 A
500 A
500 A
Max step voltage 1500 V 1500 V

 

Why Hitachi Energy?

  • Compact size reduces overall space requirements in transformer to ensure cost effective solutions
  • Simplistic, reliable design philosophy ensures less complexity for reduced maintenance time and cost
  • Proven contact system has more than 40 years of service experience in more than 25,000 tap-changers

Get to know more

Document title ID
Technical guide
Ordering data form (.xlsm)
Please note that this is an interactive form, which can be filled in, saved, and sent to us by e-mail.
User's guide
Installation and commissioning guide
Maintenance guide
Repair guide 1ZSE 5492-130
Spare parts list 1ZSC000562-ACY
Accessories and protection devices 1ZSC000562-AAD
Oil filter unit, type OLU

Conventional on-load tap-changers
T-Sync™ tap-changers
Tap-changers
Transformer Insulation and Components
LYS186599_2
Transformers

Something caught your eye?

Our sales team will get in touch with you