technical profile - sgb-smit power matla

TECHNICAL PROFILE

2 S M A L L , M E D I U M A N D L A R G E P O W E R T R A N S F O R M E R S W H O W E A R E

SGB-SMIT AT A GLANCE

80satisfied

customers

In more than

C O U N T R I E S

Technologies for conventional and renewable energy.

The SGB-SMIT Group is certified in accordance with:• DIN ISO 9001• DIN ISO 14001 • DIN ISO 50001 • OHSAS 18001

TECHNOLOGIESQUALITY MANAGEMENT

• large power transformers• medium power transformers• large liquid-cooled distribution transformers• liquid-cooled distribution transformers• cast resin transformers• shunt reactors• series reactors• phase shifters• Lahmeyer-Compactstationen®

Transformers from 50 kVA up to incl. 1,200 MVA in the voltage range up to 765 kV.

PRODUCTS

The SGB-SMIT Group manufactures transformers for applications worldwide. Sales and service centers on all continents ensure optimum processes.

Our products meet the requirements in accordance with the applicable national standards.

READY FOR YOUR MARKET

450Y E A R S O F E X P E R I E N C E

Basis for know-how andfor know-why

Combined, more than

E M P L O Y E E Stake care ofyour project

3,500More than

Status: December 2019

S M A L L , M E D I U M A N D L A R G E P O W E R T R A N S F O R M E R S 3

SGB-SMIT POWER MATLA ”CUSTOM DESIGNED“

SGB SMIT POWER MATLAA MEMBER OF THE SGB-SMIT GROUP

S G B - S M I T G R O U P

Every SGB-SMIT POWER MATLA unit is custom-made from standardised design elements and using uniform manufacturing operations. This flexible, but well co-ordinated approach ensures the highest quality of design and construction for all our transformers and makes the best possible use of the valuable knowledge and experience gained over the years and best practices developed in our factory.

The Large Power Transformer factory in Pretoria is a well-equipped factory and is amongst the biggest and most sophisticated transformer manufacturing plants within the Southern Hemisphere and one of two large transformer manufacturers within sub-Saharan Africa.

The Distribution Transformers factory in Cape Town has been manufacturing distribution transformers and miniature substations for more than 60 years.

SGB-SMIT POWER MATLA (Pty) Ltd is owned by SGB-SMIT (GmbH) and Power Matla.

SGB-SMIT, is the largest independent and pure-play transformer manufacturer in the world, with headquarters in Regensburg, Germany. They are represented on 5 continents in 8 countries with plants in Germany, the Netherlands, USA, Romania, Malaysia, India, China and the Czech Republic. With transformer expertise since 1913 they produce transformers ranging from 50 kVA up to 1,200 MVA.

Power Matla (Pty) Ltd is a locally owned black empowered company with investments in various portfolios within the renewable energy, ICT, mining and power utilities markets providing good shareholder value and solid returns.

The company consists of Large Power Transformers manufacturing plant in Pretoria and Distribution Transformers plant in Cape Town and supplies a full range of transformers, from generator step-up to transmission and distribution transformers. The range includes three-phase and single-phase units, auto-transformers, arc-furnace, locomotive and traction transformers, miniature sub-stations, NECRT’s as well as shunt reactors.

SGB-SMIT POWER MATLA has over 70 years experience in successful design, manufacturing, testing, installation and commissioning of a full range of power and distribution transformers which include large power transformers of voltages up to 800MVA.

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SMALL, MEDIUM AND LARGE POWER TRANSFORMERS ALL OVER THE WORLD

EXPERIENCE AND DESIGN CAPABILITY

DESIGNS

SGB-SMIT POWER MATLA has many years of experience in the design, manufacturing, installation and commissioning of small, medium and large power transformers for various applications.

Our design experience ranges from small power transformers (SPT – < 60MVA, < 132kV) up to large power transformers (LPT – 800MVA, 500kV) including Generation Step-up Units (GSU’s). In addition, all aspects of auxiliary control circuit application and layout designs are also provided.

The transformers manufactured by SGB-SMIT POWER MATLA range from standard designs in accordance with IEC requirements to complex designs specific for a customer’s individual requirements in all applications and industries across the African continent and overseas.

The software available to our designers is a state of the art integrated design system. This includes winding design and optimisation; graphical electromagnetic field line plots by means of 3D Finite Element Method modelling; temperature analysis; short circuit stress calculations to full 3D CAD modelling of the transformer and its components. This allows our designers tocustomise each power transformer to specific customer requirements.

Shipping

Oil & Gas

Solar Power Stations

Power Plants

Onshore

Offshore

Power Distribution

Railway

Industry

High Buildings / Data Center

Hydro Power

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4

10

8

6

2

1

7

5

9

4

3

1

2

3

4

5

6

7

8

9

10

11

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DESIGN REVIEWSQUALITY, HEALTH, SAFETY &ENVIRONMENT

Customer drawings are prepared for tender designs and finalised on order placement. All electrical and mechanical designs undergo an internal design review process. External design reviews by customers are also allowed for in the design process. If a detailed customer specification is not available,

SGB-SMIT POWER MATLA can offer a cost effective design basedon the requirements of IEC 60076 product standards.

SGB-SMIT POWER MATLA can also provide template technical schedules based on the IEC requirements, should these not be available from the customer.

The power transformer plant located in Pretoria (Gauteng) is a world class manufacturing facility and boasts a fully certified ISO 9001 quality management system, ISO 14000 environmental management system as well as the OHSAS 18000 health and safety management system.

At every stage during manufacturing, the materials and processes are inspected by suitably qualified and experienced inspectors to ensure all required standards and manufacturing practices are adhered to. Six-sigma systems are built into every manufacturing process in the factory to enhance the quality and documentation of our products.

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TRANSFORMERS MADE BY SGB-SMIT POWER MATLA - STANDARD FEATURES

SUPPLY CHAIN CORE DESIGNSGB-SMIT POWER MATLA prides itself in our ability to leverage our global network. We also manufacture most of the transformer structural components in-house. Raw materials and components not manufactured in-house are sourced from world class suppliers. Procurement of material and components is done from a list of pre-qualified suppliers locally and internationally who are certified to conform with the highest standards in terms of Quality (ISO9001), Health and Safety (OHSAS 18000) as well as Environmental (ISO 14000) respectively.

Before a supplier is approved, their capability is assessed, by taking into consideration their technical ability; quality control system; safety, health & environmental controls; financial viability as well as other commercial factors. Supply level agreements are put in place with key suppliers to ensure availability of stock and continuity of supply. A number of enterprise development initiatives are considered for development of small independent business units.

SGB-SMIT POWER MATLA applies strict control of incoming raw material from pre-qualified suppliers. All incoming goods are quality-controlled and checked before they are released into the sub-assembly manufacturing lines. Where certification is required, the raw material is sent to our on-site SANAS accredited laboratory for material analysis, verification and certification. Any non-conforming product is rejected and returned to the supplier for rectification or replacement.

Core design principles are based on achieving the smallest active part possible whilst achieving low noise level, low no-load losses and ensuring high short circuit withstand capability of the overall core structure. The basic core design is either a three-limb or a five-limb type core. The core is composed of a circular cross-section without any bolts through the core. The joints are mitred and step-lap stacked.

Selection of core steel material for a particular core ranges from conventional grain orientated electrical steel (GOES); to domain refined grain orientated electrical steel based on customer specifications for no-load losses and noise levels.

Transport restrictions on weight and dimensions may influence the most appropriate core geometry for the transformer that is economical on losses; flux density; overall core weight and sound level.

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WINDING DESIGN WINDING MANUFACTUREThe transformer windings must have the ability to withstand high mechanical and electrical stresses resulting from short circuit conditions, lightning and switching surges as well as normal overload requirements during peak hours in daily operation throughout the lifetime of the transformer.

Windings manufactured by SGB-SMIT POWER MATLA are made of annealed copper and guarantee high mechanical; electrical; and thermal stability under abnormal conditions. This ensures the safe operation of the transformer over it’s lifetime.

Winding technologies are layer, helical, continuous disk and interleaved disk depending on the operating conditions as determined by the rated apparent power; rated voltage; network fault level as well as the climatic conditions of the site of operation and specified temperature rise limits. Disk windings are suitable for higher voltages while layer and helical windings are suitable for lower voltages.

The conductor used on windings is oxygen free copper. The shape of the conductors is rectangular with small edge-radii. The conductor is often divided into two or more parallel strands to reduce the eddy current losses within the winding. transformer with regard to the electrical and mechanical requirements.

Each strand is insulated either by thermally upgraded paper covering, or by an enamel coating, or both. Two separately insulated and parallel strands may sometimes have a common paper covering. Conductor types can be strip conductor or CTC (Continuously Transposed Conductor).

Manufacturing of windings is carried out by suitably qualified and experienced winders on vertical or horizontal winding machines. Winding machines are precisely controlled to achieve constant contact pressure and winding tension.

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INSULATION MATERIAL INSULATION OILMaterial for the insulation structure and barrier boards is manufactured from high quality compressed transformer board, compacted laminated wood and/or fibre sheets depending on the application within thetransformer with regard to the electrical and mechanical requirements.

Elevated temperatures (hot-spots) in transformers are detrimental to paper insulation’s longevity due to the decomposition of the cellulose bonding inside the paper. This results in the degradation of the insulation between strands which may lead to premature insulation failure of the transformer.

For paper insulated conductor used on windings, SGB-SMIT POWER MATLA has standardised on thermally upgraded paper for all windings types. This ensures an additional 10Kelvin hot spot temperature margin resulting in an extended life of the transformer.

The mineral oil inside the transformer tank acts as an insulation medium as well as a coolant for the windings inside the transformer. The mineral oil used in our transformers complies with international standards. Only virgin oil is used (free of contaminates) and no recycled oil is used to fill the transformers.

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TANK DESIGN TANK MANUFACTUREThe transformer tank accommodates the core and windings (active part) as well as insulating oil. It serves as a support structure for accessories and control equipment as well as acting as physical protection for the active part. Due to its vital role the tank design must be robust and very reliable implying the use of high quality material.

The transformer tank is usually of the rigid type with removable radiators connected by shut-off valves. The tank shape and size is designed to optimise the quantity of material used taking into consideration the electrical clearance requirements, structural strength and required oil volume.

The base is flat with a minimum thickness of 20mm and is determined by the lifting capacity required for the core and winding masses.

Mild steel plates are the main building material used in our tank, cover and conservator as well as all the pipes and fittings. However, where there is a serious concern with high temperatures caused by eddy losses around high current carrying bushings in which case stainless steel is used instead.

Double welding is used where oil tightness is required. Rubber or cork rubber compound is used for the gaskets on flanged connected pipe joints/transport and inspection cover openings and all other valves and fittings.

W I N D I N G M A N U F A C T U R E

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PAINTING AND SURFACE TREATMENT

MAIN TERMINALS

SGB-SMIT POWER MATLA has a range of proven surface treatments depending on the transformer site climatic conditions and application environment. All paint and coatings are done in accordance with a documented in-house painting system complying with strict safety, health, environmental and quality requirements.

All new transformers, irrespective of whether they are operating in non-corrosive or corrosive environments, are coated in accordance with SGB-SMIT POWER MATLA‘s corrosive protection specification. External tank surfaces are painted with a two-component epoxy primer followed by a two-component acrylic or polyurethane finishing coat.

Separate radiators are generally hot-dip galvanised. Moreover, test standards include partial discharge measurements at a max. basic interference level of approx. 10 - 20 pC, allowing significant improvement on the value specified by the applicable standards.

In addition to the standard corrosion protection painting system, a zinc-metal spray coating can be applied on customer request. Other customer specific painting system requirements are also provided for. All external surfaces of the transformer and accessories are colour coded in accordance with the Natural Colour System (NCS codes) or RAL international colour standards to a customer’s unique requirements.

Customers have a choice of bushings from standard solid porcelain oil impregnated (OIP) type bushings to resin impregnated (RIP) bushings for various applications such as Oil-to-Air, Oil-to-Oil, Oil-to-SF6, Air-to-Air and Air-to-SF6. Our bushings are always sourced from world class suppliers of bushings, who comply with international standards and are generally positioned on the cover.

For voltages above 52 kV, condenser type bushings which facilitate the electric stress control via the insertion of floating aluminium equaliser screens which are located in the condenser core are used. Enclosures can be provided on the primary and/or on the secondary side and may be constructed for cable or bus duct connection. Transformers may also be provided with plug-in or cable box bushings.

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ACCESSORIES DRYING AND VACUUM TREATMENTDepending on the type and application of the transformer

the accessories will usually include a combination of the following items either as standard or optional as per customer requirements:• Bushings (Oil or Resin Impregnated, Oil-to-Air, Oil-to-Oil; Oil- to-SF6)• Oil conservator with level indicator• Rubber-bag with bag leak detector in the conservator to prevent oil coming into direct contact with air• Tap changers (oil type as well as vacuum)• Filling and drain valves• Oil sampling device• Earthing terminals• Lifting lugs• Jacking pads• Radiator panels• Silica-gel breather• Buchholz relay (GOR)• Winding Temperature Indicators and Oil Temperature Indicators (Analogue or Digital).• Fibre optic probes for direct hot spot temperature measurements on active part.• Pressure relief devices and provision for pressure purging systems.• Provision for water cooled systems• Impact recorders• Separate core and core clamp earth test positions

Other additional accessories can be fitted according to customer specifications.

The moisture content in oil and solid insulation can have adverse effects on the life span of the transformer since it affects the dielectric breakdown strength of solid and liquid insulation. This affects the rate at which the cellulose ages and the propensity for bubble evolution during overloads.

In order to counteract these negative effects of moisture adequate drying and vacuum treatment is performed using proven technology such as Vapour Phase Drying and Low Frequency Heating (LFH). Before filling, the oil is always degassed and purified.

TESTINGEvery SGB-SMIT POWER MATLA transformer is individually tested according to major international standards as well as, in accordance with any special tests required by the customer, and must pass all these tests before leaving the factory. The test certificate forms part of the transformer operating manual.

SFRASFRA (Swept Frequency Response Analysis) fingerprinting is also done before the transformer leaves the factory and redone on site.

Impact recorders are installed on the core as well as on the tank of the transformer to verify adverse impacts or accelerations in all three dimensions. Results of the SFRA test and impact recorder data are made available to our customers.

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SMALL POWER (SPT’S) MEDIUM POWER (MPT’S)SGB-SMIT POWER MATLA designs and manufactures small power transformers (SPT) ranging from 20 MVA to 63 MVA and up to 172 kV. The SPT range covers standard or complex applications from the typical substations to furnaces, tractions, rectifiers and reactors.

We have the skills and resources to deal with specific customer needs in terms of engineering or assembly requirements, special accessories as well as special materials or components. The following transformers are included in the SPT range:

• Double Wound or Auto-Connected• Outdoor bushings or cable box applications• 3 phase with/without OLTC• 2 windings with/without OLTC and with/without stabilising winding.• ONAN/ONAF/OFAF/ODAF cooling• Standard/High impedance• Low sound pressure level

SGB-SMIT POWER MATLA designs and manufactures medium power transformers (MPT) ranging up to 200 MVA 275 kV. Other power transformer sizes in the MPT range are rated above 200 MVA up to 72 kV. The MPT range covers mostly customer applications such as GSU and system power transformers.

We have the skills and resources to deal with customer needs, however complex these may be in terms of engineering or assembly requirements; special accessories and special materials or components. The following transformers are included in the MPT range:

• 3 phase with/without OLTC/OLTS/Link Board• 2 windings with/without OLTC/OLTS/Link board and with/ without (not loaded) stabilising winding• ONAN/ONAF/OFAF/ODAF cooling• Standard/High impedances• Low sound pressure level

STANDARD AND COMPLEX SMALL AND MEDIUM POWER TRANSFORMERS

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LARGE POWER (LPT’S)SGB-SMIT POWER MATLA designs and manufactures large power transformers (LPT) with a three phase power rating higher than 200 MVA or with voltage ratings higher than 275 kV. We supply three phase units up to 800 MVA and single phase units up to 500 MVA. LPT’s are mostly commonly used in customer applications such as GSU transformers, system power transformers and large transmission transformers.

The following transformers are included in the LPT range:

• 3 phase with/without OLTC/OLTS/Link Board• 2 windings with/without OLTC/OLTS/Link board and with/ without (not loaded) stabilising winding• ONAN/ONAF/OFAF/ODAF cooling• Standard/High impedances• Low sound pressure level

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TRANSFORMER RANGE DEFINITION

MVA200MVA63MVA40MVA

MPT> 63 MVA & < 72,5 kV

MPT> 63 < MVA & < 200

72.5 < kV < 172

SPT 3 - 540 < MVA < 63> 72.5 - 171 kV

Max BIL 650 kV

MPT> 200 MVA

172 < kV < 275kV (or BIL > 650kV)

LPT> 275 kV

LPT> 200 MVA & > 72,5 kV

SPT 1 - 2< 40 MVA

72.5 < kV < 171 Max BIL 650 kV

LDT< 40 MVA < 72.5 kV

LDT40 < MVA < 63

< 72.5 kV

72.5kV

172 kVFor SPT 1 - 5 max

BIL 650 kV

275 kV

SystemVoltage kV

Transformer Front View

S M A L L , M E D I U M A N D L A R G E P O W E R T R A N S F O R M E R S 1 5T E C H N I C A L D A T A S H E E T S T E C H N I C A L D A T A S H E E T S

TRANSFORMER RANGE DEFINITION

Transformer Top View

BE

AD

C

F

Transformer Side View

Note: For specific dimensions refer to tables on Pages 16 - 18


SPT TECHNICAL DATA SHEETMVA Nominal Voltage (kV

rms)Rating of tertiary (MVA)

Imped @Nom Tap(%)

Vector Group

Overall dimensions (m) Transformer Mass (Ton)

Prim Sec Ter A B C D E F With Oil Without Oil

20 132 88 22 5 9 YNa0d1 min max

9.6 10.8

6.8 7.1

6.1 6.3

6.8 8.0

3.0 3.3

4.0 4.2

41 43

30 31

132 66 22 5 10 YNa0d1 min max

9.2 10.2

6.7 7.0

5.9 6.1

6.4 7.4

2.9 3.2

3.8 4.0

40 42

27 28

132 44 22 5 11 YNa0d1 min max

8.8 9.6

6.6 6.9

5.8 6.0

6.0 6.8

2.8 3.1

3.7 3.9

39 40

26 27

132 33 11 YNd1 min max

8.5 9.2

6.5 6.8

5.6 5.8

5.7 6.4

2.7 3.0

3.5 3.7

37 39

26 28


8.3 9.0

6.5 6.8

5.5 5.8

5.5 6.2

2.7 3.0

3.5 3.7

36 37

26 26


8.2 8.7

6.5 6.8

5.4 5.7

5.4 5.9

2.7 3.0

3.4 3.6

35 36

25 27

22

132 6.6 10 YNd1 min max

8.1 8.6

6.5 6.8

5.5 5.7

5.3 5.8

2.7 3.0

3.4 3.6

35 36

25 27

22

88 44 22 5 9 YNa0d1 min max

8.6 9.4

6.7 7.0

5.7 5.9

6.2 7.0

2.9 3.2

4.0 4.2

38 40

28 30


8.6 9.4

6.7 7.0

5.7 5.9

6.2 7.0

2.9 3.2

4.0 4.2

38 40

28 30


7.9 8.6

6.5 6.8

5.5 5.7

5.5 6.2

2.7 3.0

3.8 4.0

34 36

26 27


7.8 8.5

6.5 6.8

5.3 5.5

5.4 6.1

2.7 3.0

3.6 3.8

34 36

25 27

88 11 11 YHd1 min max

7.7 8.3

6.5 6.8

5.1 5.3

5.3 5.9

2.7 3.0

3.4 3.6

33 36

25 26

22

88 6.6 11 YNd1 min max

7.6 8.2

6.5 6.8

5.1 5.3

5.2 5.8

2.7 3.0

3.4 3.6

33 35

25 26

22

40 132 88 22 10 9 YNad1 min max

10.6 11.2

6.8 7.1

6.1 6.4

7.8 8.4

3.0 3.3

4.0 4.3

50 53

39 42

132 66 22 10 10 YNa0d1 min max

10.3 11.0

6.7 7.0

6.0 6.3

7.5 8.2

2.9 3.2

3.9 4.2

49 52

39 41

132 44 22 10 11 YNa0d1 min max

10.0 10.7

6.7 7.0

5.9 6.2

7.2 7.9

2.9 3.2

3.8 4.1

48 51

37 39


9.7 10.5

6.6 6.9

5.7 6.0

6.9 7.7

2.8 3.1

3.6 3.9

47 49

35 37


9.3 10.2

6.5 6.8

5.7 6.0

6.5 7.4

2.7 3.0

3.6 3.9

47 49

35 37


9.1 10.1

6.5 6.8

5.5 6.0

6.3 7.3

2.7 3.0

3.5 3.9

46 49

35 36

22

88 44 22 10 9 YNa0d1 min max

10.2 10.6

6.8 7.1

5.7 6.0

7.8 8.2

3.0 3.3

4.0 4.3

52 55

38 40


10.2 10.6

6.8 7.1

5.7 6.0

7.8 8.2

3.0 3.3

4.0 4.3

52 55

38 40


8.9 9.7

6.6 6.9

5.4 5.6

6.5 7.3

2.8 3.1

3.7 3.9

46 49

36 38


8.4 9.2

6.5 6.8

5.3 5.5

6.0 6.8

2.7 3.0

3.6 3.8

46 48

35 37


8.1 9.1

6.5 6.8

5.1 5.3

5.7 6.7

2.7 3.0

3.4 3.6

45 48

35 37

22

88 6.6 11 YNd1 min max

8.0 8.9

6.5 6.8

5.1 5.3

5.6 6.5

2.7 3.0

3.4 3.6

45 47

34 36

22

Notes: Dimensions and masses in the above table are from typical designs completed in recent years and may vary from these values. Specific values might change based on specific customer requirements. Contact SGB-SMIT POWER MATLA to verify dimensions for specific applications. Designs and sizes are not limited to the transformer sizes listed in the table above.

S M A L L , M E D I U M A N D L A R G E P O W E R T R A N S F O R M E R S 1 7T E C H N I C A L D A T A S H E E T S

MPT TECHNICAL DATA SHEET

T E C H N I C A L D A T A S H E E T S

MVA Nominal Voltage (kV rms)

Rating of

tertiary (MVA)

Imped @Nom Tap(%)

Vector Group


Prim Sec Ter A B C D E F With Oil

Without Oil

40 220 66 22 10 Various YNa0d1 min max

11.5 13.9

7.0 7.4

7.1 7.6

8.0 10.4

3.2 3.6

4.2 4.7

65 70

48 50

80 275 88 22 10 12.5 YNa0d1 min max

12.3 13.5

7.0 7.4

7.8 8.3

8.3 9.5

3.2 3.6

4.2 4.7

88 93

63 66

220 132 22 10 Various YNa0d1 min max

11.5 12.4

6.9 7.3

7.0 7.4

8.0 8.9

3.1 3.5

4.1 4.5

78 82

56 59


10.6 11.2

6.8 7.2

6.2 6.4

7.8 8.4

3.0 3.4

4.1 4.3

72 75

48 54

132 66 22 10 9 to 11.7

YNa0d1 min max

10.3 11.1

6.7 7.0

6.2 6.3

7.5 8.3

2.9 3.2

4.1 4.2

68 71

46 48

132 44 22 10 11.3 YNa0d1 min max

10.0 10.7

6.6 7.0

6.1 6.3

7.2 7.9

2.8 3.2

4.0 4.2

61 63

43 45


9.9 10.4

6.6 6.9

6.1 6.3

7.1 7.6

2.8 3.1

4.0 4.2

59 61

41 44


9.5 9.9

6.5 6.9

5.6 5.8

7.1 7.5

2.7 3.1

3.9 4.1

58 61

41 43


9.4 9.8

6.5 6.8

5.6 5.8

7.0 7.4

2.7 3.0

3.9 4.1

53 56

38 40

125 275 132 22 5 11.3 YNa0d1 min max

12.3 12.7

7.7 8.2

8.4 8.5

8.3 8.7

3.9 4.4

4.8 4.9

108 114

77 81


11.5 11.9

7.6 8.1

7.5 7.6

8.0 8.4

3.8 4.3

4.6 4.7

103 109

74 78

160 275 88 22 20 12.5 YNa0d1 min v

12.3 13.1

7.6 7.9

8.3 8.5

8.3 9.1

3.8 4.1

4.7 4.9

119 125

76 81

220 66 22 20 Various YNaod1 min max

11.7 12.4

7.5 7.8

7.3 7.4

8.2 8.9

3.7 4.0

4.4 4.5

105 111

74 78

132 88 22 20 Various YNaod1 min max

10.8 11.3

7.5 7.7

6.3 6.4

8.0 8.5

3.7 3.9

4.2 4.3

103 109

71 75

132 66 22 20 9 to YNa0d1 min max

10.7 11.0

7.4 7.7

6.1 6.3

7.9 8.2

3.6 3.9

4.0 4.2

95 100

67 70



LPT TECHNICAL DATA SHEET


MVA Nominal Voltage (kV rms)

Rating of

tertiary (MVA)

Imped @Nom Tap(%)

Vector Group


Prim Sec Ter A B C D E F With Oil Without Oil

400 132 22 20 14 YNa0d1 min max

13.2 13.7

7.3 7.8

8.8 8.9

8.4 8.9

3.5 4.0

4.5 4.6

141 151

101 103


13.3 13.8

7.5 8.1

9.1 9.3

8.5 9.0

3.7 4.3

4.8 5.0

181 195

130 140

250 400 132 22 40 14 YNa0d1 min max

13.6 14.8

7.9 8.5

9.5 9.7

8.8 10.0

4.1 4.7

5.2 5.4

288 310

140 149

400 22 Various YNd1 min max

13.4 14.3

7.7 8.3

9.3 9.6

8.6 9.5

3.9 4.5

5.0 5.3

279 300

199 2.7


13.0 14.2

7.5 8.2

9.1 9.5

8.2 9.4

3.7 4.4

4.8 5.2

233 250

166 180

275 132 22 40 11.3 YNa0d1 min max

12.1 13.0

7.4 8.1

8.2 8.6

8.1 9.0

3.6 4.3

4.6 5.0

214 230

148 155


11.5 12.4

7.3 8.1

7.5 7.8

8.0 8.9

3.5 4.3

4.6 4.9

158 170

108 112

315 400 88 22 40 Various YNd1 min max

13.8 15.9

7.7 8.3

9.3 9.4

9.0 11.1

3.9 4.5

5.0 5.1

300 323

213 224

275 132 22 40 12.5 YNa0d1 min max

12.5 13.3

7.4 8.0

8.4 8.6

8.5 9.3

3.6 4.2

4.8 5.0

293 315

209 219

132 88 22 40 Various YNd1 min max

10.8 11.5

7.3 7.9

6.8 7.1

8.0 8.7

3.5 4.1

4.7 5.0

288 310

206 216

500 400 132 22 40 14 YNa0d1 min max

13.7 14.9

7.7 8.1

9.4 9.7

8.9 10.1

3.9 4.3

5.1 5.4

293 316

223 241


13.5 14.3

7.6 8.0

9.3 9.5

8.7 9.5

3.8 4.2

5.0 5.2

279 300

217 228


13.4 14.3

7.6 8.0

9.3 9.5

8.6 9.5

3.8 4.2

5.0 5.2

270 290

204 214

275 132 22 40 11.3 YNa0d1 min max

12.5 13.3

7.5 7.8

8.5 8.7

8.5 9.3

3.7 4.0

4.9 5.1

262 282

200 209

275 88 22 40 12.5 YNa0d1 min max

12.5 13.2

7.5 7.8

8.5 8.7

8.5 9.2

3.7 4.0

4.9 5.1

256 275

195 205


11.9 12.7

7.5 7.8

7.8 8.0

8.4 9.2

3.7 4.0

4.9 5.1

254 273

193 203

630 400 220 22 20 14 YNa0d1 min max


400 275 22 40 12.5 YNa0d1 min max



S M A L L , M E D I U M A N D L A R G E P O W E R T R A N S F O R M E R S 1 9T E C H N I C A L D A T A S H E E T S

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SGB-SMIT POWER MATLA1 Buitenkant Street. Pretoria West8 Eliot Avenue, Epping 2, Cape TownPhone +27 12 318 9911Fax +27 86 524 7167e-mail [email protected]

www.sgbsmitpowermatla.comwww.sgb-smit.com

CONTACT

SMIT TRANSFORMER SALES INC.Summerville, SC • USAPhone +1 843 871-3434

SGB-USA INC.Louisville, OH • USAPhone +1 330 871-2444

OTC SERVICES INC.Louisville, OH • USAPhone +1 330 871-2444

SGB MY SDN. BHD.Nilai • MalaysiaPhone +60 6 799 4014

SGB TRANSFORMERS INDIA PVT. LTD.Chennai • IndiaPhone +91 44 45536147

SGB CHINA CO. LTD.Yancheng • P.R. ChinaPhone +86 515 88392600

SGB-SMIT POWER MATLA (PTY) LTDPretoria West • South AfricaPhone +27 12 318 9911Cape Town • South AfricaPhone +27 21 505 3000

STARKSTROM-GERÄTEBAU GMBHRegensburg • GermanyPhone +49 941 7841-0

SÄCHSISCH-BAYERISCHESTARKSTROM-GERÄTEBAU GMBHNeumark • GermanyPhone +49 37600 83-0

ROYAL SMIT TRANSFORMERS B.V.Nijmegen • The NetherlandsPhone +31 24 3568-911

SMIT TRANSFORMER SERVICENijmegen • The NetherlandsPhone +31 24 3568-626

RETRASIB S.A.Sibiu • RomaniaPhone +40 269 253-269

SGB CZECH TRAFO S.R.O.Olomouc • Czech RepublicPhone +420 605 164860

BCV TECHNOLOGIES S.A.S.Fontenay-le-Comte • FrancePhone +33 251 532200

technical profile - sgb-smit power matla

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