The MAIN JOURNAL for POWER GRID SPECIALISTS in RUSSIA
3 - 6 J U N E 2 0 1 9
MADRID, SPAIN
The MAIN JOURNAL for POWER GRID SPECIALISTS in RUSSIA
3 - 6 J U N E 2 0 1 9
MADRID, SPAIN
34
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equipment
To Stay Ahead of
the Curve, Keeping
Adherence to Traditions
For more than 120 years of its history, Izolyator plant has
produced more than 620,000 high-voltage bushings, operating
in the vast majority of power facilities in Russia and the CIS
countries, as well as in 30 countries of the world. Due to
active research and development activities, continuous
expansion of international relations both in business and in
engineering direction, the company is constantly improving
its products, offering perfect innovative solutions, which
provide the highest level of reliability.
INNOVATIVE
DEVELOPMENTS
The range of products manufac-
tured by the company includes over
360 high-voltage bushings (includ-
ing its versions) of various types
and voltage classes. In total, about
32 new bushing designs were devel-
oped within the past 2018. Among
them there were innovative products
not previously produced in Russia.
Since 2018, Russian power grids
have set a course for the transfer of
all major technological processes
to a new digital platform. Support-
ing the implementation of power
grid digitalization concept, Izolyator
started the development of a new
bushings line containing additional
power sources for connecting digital
diagnostic equipment. Such an op-
tion will undoubtedly be in demand
in the nearest future when retrofi t-
ting power transformers and old
circuit breakers without inbuilt diag-
nostic tools.
Design and construction of new
modern digital substations required
new types of high-voltage equip-
ment, which includes high-voltage
bushings. The best option for solving
the tasks of digital substations was
to implement a new type of bushings
with solid insulation like RIN (Resin
Impregnated Nonwoven).
RIN is a resin-impregnated non-
woven synthetic material. This in-
novative in all senses component
allows engineers to create new-
generation high-voltage bushings.
Eliminating paper from solid bush-
ing insulation signifi cantly increases
its moisture resistance. In addition,
requirements for bushings storage
are considerably reduced.
The technology of RIN-insula-
tion manufacturing is almost identi-
cal to the RIP-technology. However,
RIN-insulation properties make it
possible to eliminate long and en-
ergy-intensive operation of thermal
vacuum drying. Besides, the im-
pregnation process leaves no voids
in the insulation material due to the
chemical reaction of synthetic yarn
and epoxy resin. It ensures the ab-
sence of partial discharges inside
the insulation up to the maximum
operating voltage.
The resulting insulation material
has the highest hydrophobic proper-
ties. Due to this, dielectric loss coeffi -
cient is stable and independent from
the eff ects of very high humidity. It
ensures transportability, absence of
special storage requirements, and
reliable operation of the insulation.
Digital substations are designed
to ensure minimal equipment main-
tenance in operation. If something
happens, it is necessary to re-
place failed equipment as easily as
a blown fuse. Bushings with internal
RIN insulation and external polymer
insulation serve these purposes.
When damaging such a bushing,
there are no damages for adjacent
equipment and bushings of adjacent
electrical phases. In this case, it is
enough to replace the bushing for
35
further electric power supply of con-
sumers.
Bushings with RIN insulation are
certifi ed in GOST RF state certifi ca-
tion system. The certifi cates of the
Federal Agency on Technical Regu-
lating and Metrology are obtained.
At present, the certifi cation proce-
dure in PJSC "Rosseti" is at the fi nal
stage.
It should also be noted that RIN
insulation has high thermal conduc-
tivity and a low coeffi cient of thermal
expansion. It helps to decrease volt-
age between mechanically connect-
ed elements of the bushing. This is
important for operation at extreme
temperatures (both high and low).
Also, such properties of RIN insu-
lation open up the possibilities for
creating equipment using supercon-
ductivity phenomenon.
In such equipment, the bushings
must operate reliably at ultra-low
temperatures. At the same time, the
lower part of the bushings should
constantly work in liquid nitrogen at
the temperature of minus 196 °С,
and the upper part — at ambient
temperature.
Conducted studies have shown
that RIN-insulation, using synthetic
nonwoven material, makes it possi-
ble to produce bushings enabled to
withstand all the specifi ed electrical
and mechanical loads in extreme
working conditions (under extreme
temperatures). As a result, Izolyator
plant developed and manufactured
110 and 220 kV bushings, which
passed all acceptance tests. Today,
Izolyator plant is the only manufac-
turer of high-voltage bushings in
the world that has successfully con-
Bushings with RIN insulation in the assembly room of Izolyator plant
New equipment for manufacturing external polymer insulation
of bushings at Izolyator plant
The
fi
rst phase of 220 kV superconducting current limiter,
equipped with bushings produced by Izolyator plant in the
KER test center
ducted acceptance tests of 110 and
220 kV bushings, the lower parts
of which were in liquid nitrogen at
a temperature of minus 196 °С.
Such high-voltage bushings
produced by Izolyator plant proved
their high reliability and quality in
the project of SuperOX company for
creating 220 kV three-phase cur-
rent-limiting device based on high
temperature super conductivity. The
equipment was installed at Moscow
"Mnevniki" substation in 2018. Fol-
lowing the results of the work done,
the company plans to initiate a stan-
dard for the use of cryogenic equip-
ment in power industry.
Foreign orders pose new chal-
lenges to the company, related to
the change of product design, the
search for technical solutions and
non-standard approaches when
manufacturing process. Many new
engineering solutions of Izolyator
plant appear due to foreign orders.
In response to world technologi-
cal challenges and requests from
foreign customers, Izolyator plant
developed and launched into serial
production a line of DC bushings for
long-distance transmission lines. To
the date, complete documentation
has been prepared for the produc-
tion of high-voltage DC bushings.
In addition, plant’s test center has
been equipped with the necessary
equipment. Thus, high-quality do-
mestic bushings for future Russian
The 25th CIRED Session
Special issue, June 2019
36
EQU
I
PME
N
T
long-distance DC transmission lines
already exist.
INTEGRATION
COOPERATION
In the past and present, and well into
the future international cooperation
is an important part of Izolyator Com-
pany operation and development. At
the same time, the company espe-
cially appreciates the opportunity to
prove the reliability and effi ciency
of developed technologies, materi-
als and equipment through one of
the most diffi cult challenges — the
test of time. Due to this, Izolyator
Company constantly opens up new
regions of presence worldwide, es-
tablishing long-term and eff ective
partnership.
In 2018, the company signifi cant-
ly strengthened its relations with
long-standing and reliable partners
from the CIS countries — power grid
companies and energy equipment
manufacturers from Armenia, Mol-
dova, Tajikistan, Kazakhstan, Bela-
rus, Ukraine, Uzbekistan and Geor-
gia. Izolyator Company has found
reliable partners in European and
Asian countries and has contributed
to the strengthening of relations be-
The agreement on joint manufacturing facility establishment between Mehru and
Izolyator was signed during the 47th CIGRE Session in Paris. From left to right:
Andrey Murov, Chairman of the Management Board of "FGC UES", PJSC; I. S. Jha,
Chairman of Power Grid; Sandeep Prakash Sharma, Executive Director of Mehru;
Alexander Slavinsky, Chief Executive O
ffi
cer of Izolyator Plant LLC
Participants of bushing tests for Indian companies TSTRANSCO and TTDI in the test center of Izolyator Plant
tween the national energy systems
of Russia, Vietnam and India.
An important milestone in the
development of the international
relations of Izolyator Company and
entire domestic electrical indus-
try was the signing of a strategic
memorandum with the Indian com-
pany Mehru Electrical & Mechanical
Engineers (P) Ltd on the establish-
ment of a joint manufacturing facility
within the 47th CIGRE Session.
37
Izolyator Company
Leninа str. 77, Pavlovskaya Sloboda,
Istrinskiy District, Moscow Region,
143581 Russian Federation
Tel + 7 (495) 727 3311
Fax + 7 (495) 727 2766
www.mosizolyator.com
The signing ceremony of the
Agreement was held at the booth
of Russian National Committee of
CIGRE (RNC CIGRE) in the pres-
ence of Andrey Murov, Chairman
of the Management Board of "FGC
UES", PJSC and Chairman of RNC
CIGRE, and Mr. Jha, Chairman and
Managing Director of Power Grid
Corporation of India Limited and
Chairman of CIGRE Indian NC.
The agreement establishes the
principles of organizing the com-
plete production cycle and further
realization of high-voltage bush-
ings of various voltage classes with
modern solid RIP insulation in India.
The main constructive part, as well
as the know-how of the joint manu-
facturing facility will be the internal
RIP-isolation — Izolyator company
in-house development. It should be
noted that this is the fi rst experience
of Russian companies in creating
a joint manufacturing facility for the
production of high-voltage electric
power equipment with Indian com-
panies.
Mutually benefi cial cooperation
of Izolyator and Mehru will allow the
companies to reduce production and
transport costs and to optimize the
logistics of ultimate product delivery
to the customer. Much attention will
be paid to the maintenance of pro-
ducts both in the processes of its in-
stallation and operation through the
use of developed service and distri-
bution network of the Indian partner.
Izolyator Company plans to con-
duct a full range of high-voltage
bushings tests at the Central Power
Research Institute in India in April
2019.
The type test program includes
a full cycle of electrical, current and
special seismic tests of 420 kV /
3000 A and 800 kV / 2000 A bush-
ings. The most interesting and un-
paralleled anywhere in the world
stage of future international event
will be seismic resistance test of
800 kV / 2000 A bushing.
The main part of the event will in-
clude an open technical conference
for discussing all aspects and tech-
nical features of operation, installa-
tion and maintenance of ultrahigh-
voltage bushings with RIP-insulation
made by Izolyator Company for In-
dian power facilities.
Due to the expansion of interna-
tional cooperation areas, Izolyator
Company has the opportunity to
manufacture products that are com-
petitive not only in the Indian market,
but also in the markets of Southeast
Asia, including China, and in other
regions of the world. In the near-
est future, the company will have
good prospects in the Middle East.
The fi rst steps of cooperation with
Turkey have already been taken. In
addition, cooperation with Syria is
starting and collaborative work with
such a long-time partner as Iran
Transfo company is continuing.
Alexander Slavinsky, D. Sc.,
Chief Executive Offi cer of Izoly-
ator Plant LLC emphasizes that the
company’s staff is always ready to
share unique accumulated experi-
ence with all partners. Sharing of
experience is an integral part of the
mission to create the foundations
for a stable and sustainable energy
supply in the world.
Today, the company sets new
global challenges. For Izolyator
plant it has already become a good
tradition to please consumers with
new materials and technologies
every year. In 2019 the export vol-
ume will be further increased, and
"Made in Russia" brand will be
brought to a new global level.
Р
The 25th CIRED Session
Special issue, June 2019
Оригинал статьи: To Stay Ahead of the Curve, Keeping Adherence to Traditions
For more than 120 years of its history, Izolyator plant has produced more than 620,000 high-voltage bushings, operating in the vast majority of power facilities in Russia and the CIS countries, as well as in 30 countries of the world. Due to active research and development activities, continuous expansion of international relations both in business and in engineering direction, the company is constantly improving its products, offering perfect innovative solutions, which provide the highest level of reliability.
