Joint-Stock Company Scientific and Engineering Center "ZTZ-Service
Co." is located in the Southern Ukrainian city Zaporozhye,
which was recognized as a "Transformer Capital" in
the former Soviet Union.
Historically ZTZ-Service Co. dated from 1954, when an Engineering
Installation De-partment was established within Zaporozhye Transformer
Plant to provide technical supervision of the assembling, installation
and testing of the power transformers for 400 kV.
Since that time practically all the Large Power Transformers
manufactured by Zapo-rozhtransformator (ZTR in abbreviation)
have been installed and put into operation under technical supervision
of the Installation Department, future ZTZ-Service Co.
Specialists of the department were the main developers of the
guiding technical documentation on installation and commissioning
of 110-750 kV transformers.
Hereinafter the development of the technological equipment on
drying out, oil de-gassing and purification necessary for new
transformers putting into operation, tech-nologies on the transformers
drying out and their moisture protection have been de-veloped
by ZTZ-Service Co. into technologies of the transformer equipment
refur-bishment and life extension.
In 1961-1963 the first experience on power transformer in-field
reconstruction and reliability increasing was obtained.
In 1966-1971 the work on the equipment condition diagnostics,
development and im-plementation of the methods on reliability
increasing gradually took the central place and became the base
of ZTZ-Service Co. nowadays strategy - conception of life ex-tension
and guaranteed maintenance of the equipment serviceability meeting
the highest international standards requirements.
Since 1991, after ZTZ-Service Co. became firstly a separate
state enterprise and then a joint-stock company, the conceptual
grounding of ZTZ-Service Co. became continuous development of
scientific and technological base to have possibility for performance
of the most difficult works: from on-line diagnostics to the
guaranteed life extension of the transformer equipment.
ZTZ-Service Co. is an active member of the international organizations
determining technical policy in the field of energy: since 1991
- a collective member of CIGRE, member of CIGRE Study Committee
No 12 "Transformers", since 1993 - member of the international
committees of the Doble Clients: "Transformers", "Bushings
and in-strument transformers", "Liquid dielectrics",
"Transformer oils", member of EuroDoble Committee.