Conservator Type
They are produced in power range of 25 – 2500 kVA, up to 36 kV high-voltage level, mono-phased or tri-phased, oily, natural cooler (ONAN), idle level convertor or automatic level convertor under load and in a way that they can be used in externally and internally.
Conservator Type Transformer
Produced within a power range between 10 – 100.000 kVA , up to 66 kV high voltage level, three phase or single phase, oil immersed, ONAN, ONAF, OFWF, with Off-Load or On-Load Tap Changer, used both external and internal.
FITformer REG
Our power supply system is gradually changing: Renewable energy brings about higher complexity in the system. Decreases in load, their power feed-in and the storage capability sometimes fluctuate considerably. The solution is to modify the network infrastructure: the system of the future must be efficient, effective and therefore flexible. The Siemens Regulated Distribution Transformer FITformer® REG can change its voltage ratio under load. This helps the power supplier to remain within the admissible voltage range. For this purpose the transformer disposes of a three-step low voltage load regulator.
Generator step-up transformers (GSU)
Generator step-up transformers (GSU)
Generator step-up transformers (GSU) are the critical link between the power station and the transmission network, often operated day and night at full load. They must be built to withstand extreme thermal loading without ageing prematurely. ABB have successfully passed the world’s first and highest voltage short circuit test, on a 315 mega volt ampere (MVA), 765 kilovolt (kV) generator step up transformer (GSU).
GSU take the voltage from the generator voltage level up to the suitable transmission voltage level.
These transformers are located in a power station and are built as single-phase or three-phase units.
There are two (2) basic technologies for designing and manufacturing: core and shell. With shell-formed transformers, the primary and secondary are on one leg and surrounded by the core. With a core-formed transformer, cylindrical legs windings cover the core legs.
Hermetic Transformers
They are produced in power range of 25 – 2500 kVA, up to 36 kV high-voltage level, mono-phased or tri-phased, oily, natural cooler (ONAN), idle level convertor or automatic level convertor under load and in a way that they can be used in externally and internally.
Hermetically Sealed Transformer
Produced within a power range between 10 – 3.150 kVA, up to 36 kV high voltage level, three phase or single phase, oil immersed, ONAN and/or ONAF, with Off-Load or On-Load Tap Changer, used both external and internal.
HVDC Converter Transformers
HVDC converter transformers
HVDC (high-voltage direct current) is a highly efficient alternative for transmitting large amounts of electricity over long distances and for special purpose applications. As a key enabler in the future energy system based on renewables, HVDC is truly shaping the grid of the future.
ABB pioneered HVDC transmission technology in the 1950s and continuously develops the HVDC technology to meet the demands of economic and sustainable transmission and integration of different electricity generation types.
The ultra-high voltage (UHV) technology is an advancement of HVDC, transmitting large amount of power with minimum losses and integrating renewables often located at a great distance from centers of the demand. ABB successfully developed and tested 1,100 kV converter transformer technology breaking the record for the highest DC voltage levels ever.
Large Distribution Transformers
Large distribution transformers
Large distribution transformers are used for receiving energy from higher voltage levels and to transform and distribute this energy to lower voltage substations or directly to large industrial consumers.
Transformers in this range are three-phase and can be manufactured with off-circuit tap changer or on-load tap changer. Transformers provided with on-load tap changer usually have a separate tap winding.
The core is constructed of grain-oriented steel laminations. The windings are made of either copper or aluminum conductor and wound in a foil or multi-layer configuration. The tank construction can be a corrugated fin wall type or of a rigid construction type with radiators typically used for larger transformer. Fans can also be mounted on the radiators to provide additional cooling capacity.
Large Power Transformer
Bringing the energy safely to the consumer: A basic requirement applicable to all Power Transformers. However, every single one is unique – designed according to individual factors such as voltage, power, climate, system topography, sound level and many more. Siemens is your partner, who picks up these requirements converting them into convincing solutions with maximum quality. Power Transformers that render their service reliably at site. Cost-efficient and safe throughout decades.
Liquid Immersed Distribution Transformers FITformer
Distribution Transformers are used to convert electrical energy of higher voltage; usually up to 36 kV, to a lower voltage, usually 250 or 435 V, with an identical frequency before and after the transformation.
Rated power of Liquid-immersed Distribution Transformers:
50 to 2,500 kVA normal distribution application / 2,500 to 6,300 kVA for special industrial application
Medium Distribution Transformers
Medium distribution transformers
Medium distribution transformers are used to step down three-phase high voltage to low voltage for energy distribution, mainly in the countryside or low-density populated areas.
The transformers are three-phase, oil-immersed hermetically sealed, adaptable for pole-mounting or assembly in substations.
On request, the transformer can be equipped with an oil conservator and the transformer tanks surface can be hot dip zinc coating.
