Transcript Informazioni generali sul progetto - GM-TEC

Tesar
The Company
Tesar, whose sales amount in 2004 has been 22,7 million € is
one of the most important reality operating in UE in the field
of
designing
and
manufacturing
of
CAST-RESIN
Transformers.
The continuous developments, research, studies and tests, as
well as the up-to-date of its own staff has allowed Tesar to
reach a high degree of reliability and to satisfy any particular
request of our Customers, and to develop new tailor made
projects/products.
The History
Tesar, acronym of Electrical Transformers Special Application in Resin,
has been founded in 1980 as Company of Eni Group, introducing,
first in Italy, the Cast-Resin technique for power transformers.
In 1986 Tesar has been acquired by a private group and the
production has been expanded also to measurement transformers.
Today Tesar is a leader at international level.
All the Tesar production, carried out in the 2 production plants in Chiassa
Superiore and in Chiaveretto, is the results of a continuous research and
development and it is based on the use of advanced technologies and of
selected materials.
Products:
Power Transformers
Distribution Transformers

Production range: rated power from 100 up
to 3150 kVA, rated voltage from 1 up to 36
kV.
Special Transformers

Rated power up to 18 MVA, rated voltage up
to 36 kV, for rectifier, traction, induction
oven application and for motors starting.
Extreme installation as: offshore, windmill,
crane and in extremely polluted ambients.
Autotransformers
Products:
Standard
Transformers
Special
transformers
supplied at CERN
Special
transformers
supplied acc. to
Kahramaa spec.
Power Transformers
Certification
1994
1995
1995
1996
2001
2005
- ISO EN 9002 certificate
- ISO EN 9001 certificate
- ENEL homologation for classes E1-C1-F1 c/o CESI
- ENEL homologation for classes E2-C2-F1 c/o CESI
- Iso EN 9001:2000 Certificate
– Successful tests for E2-C2-F1 to IEC 60076-11 c/o CESI
Conformity to classes
Tesar transformers are designed and manufactured according to the
following classes, required by CENELEC and today by IEC 60076-11
standards, since more than 10 years:
E2 C2 F1
E2 Ambiental
Transformer suitable to be installed in ambient with substantial
condensation and pollution
C2 Climatic
External installation. Transformer suitable to be kept and used
with ambient temperature up to -25°C
F1 Fire behavior
Transformer with characteristics of self-extinction and of nonemission of toxic substances and gases
Reliability
The annual statistique shows a total of 28.000
Tesar transformers working all around the world,
underlining the
transformers.
remarkable reliability of our
Products:
Measurement Transformers
Voltage transformers

Type:
Phase/Earth (included type with fuses holder)
Phase/Phase
Current transformers



Rated current up to 2500 A.
Insulation level up to 36 kV.
Ring-type transformers cl. 0,72 kV.
Products:
Voltage
transformer
Current
transformer
Ring-type
transformer
Voltage
transformer with
fuse holder
Measurement Transformers
Application fields
BUILDINGS
ELECTRICAL PLANT
EOLIAN PLANT
OIL PLANT
Application fields
AIRPORT
SEA PORT
RAILWAYS
METRO
Installation
NORMAL INSTALLATION CONDITION
The max. altitude of installation is 1000 m above see level.
The ambient temperature in the room, when the transformer is
working, must be within the following limits:
•Minimum temp. : -25°C
•Maximum temp. : +40°C
SPECIAL INSTALLATION CONDITION
When requested, transformers are designed for special climatic
condition and we guarantee our transformers for an ambient
temperature up to +55° C
Design
Every design, planning and drawing phase is made using
the most up-dated software and CAD instruments:
AUTODESK Autocad©
Wintrasf 3.0
Rules
RULES IEC
IEC 60076-1
Power transformer – part 1 : General
IEC 60076-2
Power transformer – part 2 : Temperature Rise
IEC 60076-3
Power transformer – part 3 : Insulation levels, dielectric tests and
external clearances in air
IEC 60076-4
Power transformer – part 4 : Guide to the lightning impulse and
switching impulse testing - Power transformers and reactors
IEC 60076-5
Power transformer – part 4 : Ability to withstand short circuit
IEC 60076-10
Power transformer- part 10 : determination of sound levels
IEC 60076-11
Power transformer- part 11 : Dry-type transformers IEC TC 14
IEC 60616
Terminal and tapping markings for power transformers
HD 538.1 S1
Three-phase dry type distribution transformers 50Hz, from 100 kVA
to 2500 kVA with highest voltage for equipment not exceeding 36 kV
part 1 general requirements and requirements for transformers with
highest voltage for equipment not exceeding 24 kV
Components
MAGNETIC CORE
 The magnetic core realized with silicon coldrolled grain-oriented steel sheet give low
specific losses
 The interweaving system is step-lap type
and it is realized thanks to the most modern
cut and assembling technologies
 The proper geometry and strength of the
frames, together with the appropriate bolt
techniques, enable to obtain low noise level,
constant during the time
Components
LOW VOLTAGE WINDINGS
 The LV windings are made using aluminium or copper
sheet, with pre-impregnated class F insulating
material.
 The coils are subjected to a thermal treatment of
polymerization to obtain the finished product
 The special constructive geometry allows, moreover
an high resistance to the electrodynamic stresses
Components
HIGH VOLTAGE WINDINGS
 The HV windings are composed from more coils in
aluminium or in copper (wire or tape) connected
together
 The coils are casted into moulds under vacuum using
class F epoxy-resin
 The casting under vacuum process, electronically
monitored, allows to obtain windings with a total resin
homogeneity, so free from partial discharges
Department
• Core Coils
• Casting
• Windin
g
• Storage
• Assembling
Tests
All Tesar products are scrupulously tested in its our modern testing
rooms in Chiaveretto plant .
Main Testing Room
In line Testing Room
Tests
In the Tesar testing rooms routine, type and special
test are carried
softwares :
Trafotest
©
Heat run test
SP 2K
©
Type and special test
out
using
the
most
up-dated
Accessories
ENCLOSURE
standard enclosure
enclosure with HVLV cable boxes
Accessories
THERMOCONTROLLER
Tesar
TSX 1s
with digital exit
RS232 – RS485
transmission protocol
Modbus®
Accessories
FAN Bar 600
FAN Bar 1800
Accessories
COOLING
Tesar TSX 2
control board for fan
Transport
Tesar
transformers are delivered assembled and ready to be
connected to the high and to the low voltage network.
Installation
AIR FLOW
To guarantee the respect of the rated condition of service and to
avoid that the temperature rises are passed, in the room where
the transformers are installed an air-exchange is necessary to
discharge the heat produced during their operation.
P
S  0.188
H
S '  1.10  S
Installation
SAFETY DISTANCES
The transformer supplied without enclosure (IP00) has to be
installed in an adequate room respecting the insulation distances
showed in the table
insulation
Distances “D” mm
KV
Sheet steel wall
Louvered wall
7,2
150
300
12
150
300
17,5
220
300
24
240
300
36
320
320
Installation
HV AND LV CONNECTIONS
 Transformer without enclosure (IP00)
The cable and the bus-bar to be connected to the transformer
must be moored in an adequate way to avoid mechanical
stresses on LV and HV transformer bushings.
Installation
HV AND LV CONNECTIONS
 Transformer with enclosure (IP20 – IP21 – IP23 – IP31)
The cable and the bus-bar to be connected to the transformer must enter
the enclosure only through the holes/flanges foreseen during the order
stage.
Maintenance
Ordinary maintenance
A deep check of the transformer during the work allow to avoid
damages and to extend the expected life. In normal working
condition it is enough to do the following operation one time per
year:
• Clean of the HV/LV windings from the eventual dust, condensation or
dirty, with dry air at low pression
• Clean of the cooling and fan channel between the coil to avoid over
temperature during the working
• Verify the tightness of the bolts and nuts of the HV/LV connections,
of the bar of the tap-changer and of the frames
• Check of the correct running of thermal protection (PT100 or PTC and
relevant thermo-controller) and also the correct intervention of the
protection for surcharge and for the short circuit and the intervention
of the automatic switch
Maintenance
Table for periodical check
The main periodic checks to be performed on the transformer, the
check intervals, the equipment to be used and the results to be
obtained are reported in the following table
Pos
Check to be performed
Check Interval
1
Cleaning from dust, dirt,
presence on the windings
2
Tightening of the bolts of the main
and secondary electrical connections
3
4
unlikely
Instrument / Equipment
Results
Dry compressed air and
General cleaning
cloths
Torque wrench
Tightening of the mechanical parts
bolts and transformer clamping to the
Torque wrench
Yearly
and/or
ground
after exceptional
Tightening of plate for adjusting the events
Torque wrench
spacer blocks
Tightening torque see paragraph 5.1.
Tightening torque see paragraph 5.1.
Tightening torque see paragraph 5.1.
5
Functioning
check
of
thermocontroller and thermo-resistances
Hot air gun for thermoIntervention of the siren of alarm level,
resistance
simulated
opening of switch and trip level
heating
6
Functioning check of the overloading
and short-circuit relay
Power
generator
for Opening of the switch on reaching the presimulation of damage
set threshold.
7
Condensate deposited on the windings
8
Coil surface and internal ducts perfectly
Hot dry air and cloths
dry
After
a
long
transformer
stop
Insulation check of the windings
Megger with voltage of at
Minimum values showed at paragraph 5.2
among them and towards ground
least 2500 V
Main reference in Italy
Falck
ILVA
Nuovo Pignone
Piaggio
ACEA
AEM
ENEL
Pirelli
Ministero della
difesa
Ministero delle
finanze - Roma
Metropolitana di
Milano
Metropolitana di
Roma
Barilla
Buitoni
Auchan
Alfa Romeo
FIAT
FIAT Avio
Piaggio
Iveco
Ferrari
Pirelli
Montedison
Ansaldo
IBM
Zanussi
Agip
ERG
ESSO
SNAM
Stadio Olimpico –
Roma
Stadio Meazza –
Milano
Stadio S.Paolo –
Napoli
Teatro La Pergola Firenze
Teatro alla Scala –
Milano
Fiera di Milano
Fiera di Bologna
Fiera del Levante –
Bari
Telecom Italia
RAI
Aeroporto di
Fiumicino – Roma
Corriere della Sera
– Milano
Main reference All over the World
Hydro alluminium Norway
Sandvik Steel Sweden
Thyssen Krupp Germany
Magnitogorsk
Integrated Iron &
Steel - Russia
Orly airport Paris France
CERN - Switzerland
Wind Mills Power
Plant - Danemark
Copenhagen metro
- Danemark
Electrabel - Belgium
Aquarium Lisboa –
Portugal
British Telecom –
U.K.
Heathrow Airport –
U.K.
DEWA – Dubai
Electricity & Water
Authority
ADWEA – Abu
Dhabi Water &
Electricity Authority
MEW – Ministry
Electricity & Water
- Kuwait
DCA Dubai Airport Dubai
Deira City Center Dubai
Conference Palace
Hotel - Abu Dhabi
Shangri-la Barr al
Jissah Resort Oman
Mosul Dam Crude
Oil Pipeline - Iraq
Can and Afsin
Power Plant Turkey
FIAT - Brasil
Metrovias Argentina
Renault Argentina
Hong Kong Metro
– Hong Kong
Toshiba Plant Singapore
ST
Microelectronics Singapore