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HAMBURG WIRGES KIRCHAICH DRESDEN MARCHTRENK KECSKEMÉT SHANGHAI

Ritz Instrument Transformers GmbH

Welcome


Merger 2007

since 1904

since 1945 since 1945since 1945

… together more than 200 years experience of core solutions


RITZ Locations

• Headquarters

• Management / Administration / Finance / Controlling /

Human Resources / R&D

• Medium voltage indoor and outdoor current and

voltage transformers up to 72,5kV

• Cast resin insulated distribution transformers up to 25 MVA

• Medium voltage indoor current transformers

• Fully insulated busbar systems

RITZ

Wirges

RITZ

Dresden

Duromer

RITZ

Kirchaich

RITZ

Hamburg

• Medium voltage indoor current and voltage transformers up to 36kV

• Ring core current transformers

• Customized cast resin products


RITZ Locations

• Sales office

• Medium voltage current and voltage transformers

• Ring core current transformers

• Iron Cores and components for CT´s

• Sub-supplier for the RITZ group

RITZ

Kecskemét

(Hungary)

RITZ

Marchtrenk

(Austria)

• Medium voltage indoor and outdoor current and voltage

transformers up to 72,5 kV

• Complete range of low voltage current and voltage transformers

• Transformers for rail vehicels

RITZ

Shanghai

(China)

RITZ

Hartwell

(USA)

• Low voltage current and voltage transformers


The RITZ Group

• Total Staff (FTE, incl. Temp) 1093

– Office staff 236

• Administration (IT, Controlling, etc) 116

• Sales 45

• Quality 35

• Development / Engineering 40

– Production staff 857


RITZ Business Numbers by Product Div.

..

2012 / 2013 – Total Turnover 149,3 Mio Euro


Low Voltage Transformers


Products: Medium Voltage - Indoor

- Epoxy resin current and voltage transformers

- Current and voltage sensors, epoxy resin insulated

- Combined current / voltage sensors


- Epoxy resin current and voltage transformers

- Designs up to 72,5 kV

Medium Voltage - Outdoor


Metal-enclosed Instrument Transformers

Used in switchgear application


Special Transformers for Trains


Fully Insulated Bus Bar System - SIS

SIS - Solid Insulation System

Electrical Rating Parameters:

• System voltage up to 42,5 kV.

• Rated current up to 6500 A single system.

• Double system up to 12.000 A.

• Partial discharge free up to 1.5 x phase to ground

voltage

System Specific Benefits

• Compact design

• Low space requirement

• Small bending radii

• 3-dimensional geometric shape

• No maintenance

Production Length

• 13 m x 3 m x 3 m

Silicon reactor


Power Transformers


Transformer Production Wirges


up to 25 MVA and Um=36 kV for– Generator excitation for power plants

– Transmitter systems

– Underground and street trains (Traction)

– Oil platforms

– Pumping / Gas storage

– Steel mills and mining

– Drives up to 72 pulse

– Complete substations

– Pole mounted transformers

Epoxy Cast Power / Special Transformers


Final

assembly

area

Transformer Facility Wirges Germany


Manufacturing of transformer components

Coil winding with copper bar wire or copper foil

5 winding machines HV

5 winding machines LV


Winding of a glass fiber

cast coil.

max. diameter 1,60 m

The design of the HV

coil does not allow the

formation of any cracks

due to the high

mechanical strength of

the glass fiber

reinforcement even

under the most severe

short circuit conditions

or during extreme

temperature shocks

Example: Fibreglass boats

Windmill blades

Manufacturing of transformer components


Casting of glass fiber insulated coils under vacuum in special ovens

Casting molds

max. inner diameter 1,6m

max. casting height 1,7m

Transformer components


Copper or Aluminum windings

insulated using a glass fiber epoxy resin

laminate

The HV coil is cast into moulds under

vacuum process with pure epoxy resin

The LV coil is cast into moulds or VPI

design

The manufacturing process ensures a

void less insulating system of the highest

quality

The coil’s are partial discharge free and

impulse voltage proof

The HV coil can be designed with air

ducts to cool the windings

Technology and Concept



- Tapping links are brought out onto the

outside face of each coil

- The HV coils are hardly inflammable and

self extinguishing.

- Massive u-profiles for clamping the core and

pressing the coils

- Massive undercarriage to carry the weight

of the transformer

- Wide temperature range in service and

during transport and storage

- suitable for difficult environments like : "high

humidity", "aggressive atmosphere" e.t.c.

- low no load and load losses

- low sound pressure level


- Enclosures for all kind

of application indoor

or outdoor can be

supplied including

voltage / current

transformers, different

temperature relays,

surge arrestors …

Example:

Excitation transformer

for a Power Plant



Calculation / Design

The transformers are

designed by application

of a calculation program

created in-house.

Visual Basic

- Temperature rise

- Eddy losses

- No load losses

- Total losses

- Print of core design

- Print of winding design

- And much more…


Construction design / handling

Construction design by

application of the latest

design systems in 2D

Autocad 2014

…. and 3D

Solidworks or Inventor


Construction design / handling

56455-1.03.exe


Test lab with test core

Test Facility


Components manfactured by RITZ

Group

•Current and voltage transformers

•Bushing type transformer GIK/ KSOH

•SIS Busbars

Final assembly of Transformers


Cole fired power

plant

RWE Neurath

Power: 11000 kVA

Width: 2,30m

Height: 4,00m

Length: 4,50m

Weight: 33 t

Excitation Transformer


Largest and most heavy transformer manufactured by RITZ

Technical Data:

Use: Gas separation Plant

Type: DTR3020000

Rated Power: 20 MVA

Rated HV: 30 kV

Rated LV: 10 kV

Distribution Transformer


Technical Data:

Type: DTR3010000

Rated Power: 10000 kVA

Rated HV: 34,5 kV

Rated LV: 4,16 kV

Insulation Level HV: LI150AC50

Insulation Level LV: LI30AC12

Transformer enclosure

protection class NEMA 3R (IP33)

Outdoor use design

Of Shore Oil Platform Transformer


Project: Metro Cairo

Type: DTR206300

Rated Power: 6000 kVA at 20kV

4200 kVA at 11kV

Rated HV: 20 kV or 11kV

Rated LV: 2 x 592V

Duty class: 150% In–2h

350% In–1min

Incl. AF-cooling

Underground Train Transformer


30 Pulse Drive Application

Type: DTW2012500

Rated Power AN/WF: 11000 kVA

Rated HV: 20 kV

Rated LV: 15x 690 V

Vector Group Symbol:

3x Yd5

3x Y(+12º)d5

3x Y(+24º)d5

3x Y(-12º)d5

3x Y(-24º)d5


Insulation Level LV: LI-AC20

Direct-Water-Cooled Transformer


36 pulse drive application

build in one transformer

Type: DTR1012000

Rated Power AFWF: 12000 kVA

Rated Voltage HV: 6600 V

Rated Voltage LV: 6 x 1980 V



Vector Group Symbol:

Indirect-Water-Cooled Transformer

Yd(+25°)5d(-25°)5Yd(+15°)5d(-15°)5Yd(+5°)5d(-5°)5


protection class IP44


Use: Hydro Power Plant

Type: DTR3010000

Rated Power AN: 10000 kVA

Rated HV: 36750 V

Rated LV: 6300 V




protection class IP33 for

outdoor

Transformer with on load tap changer


World Trade Center Underground Train-Transformer

Technical Data:

Type: DTR305000


Extra heavy duty: 3560 kVA

Rated HV: 26,4 kV

Rated LV: 2x 511 V





For US market: UL listing

New York Ground Zero


Technical Data:

Type: DTR101500


Rated HV: 10000 V

Rated LV: 690 V



Air conditioned

Outdoor use

Transformer inside a Container


Pole mounted transformer

Up to 350 kVA and 36 kV

Outdoor use design


Technical Data:

Type: DTR102000


Rated HV: 11000 V

Rated LV: 415 V





Transformer with SF6 Switch Gear 8DJH


Subsea Transformer

Up to a depth of 3000 meters under see level

For drive applications

like pumps and motors

The cast resin is

completely under oil

in a tank

Power up to 8 MVA

Voltage 42 kV

30 puls sek.-system

Drilling for gas and oil


Advantages of cast resin transformers

• Overloads possible like - Extra heavy duty traction

• Fire protection, class F1 hardly inflammable and self

extinguishing

• Environmental Class E2 / Climatic Class C2

• Partial discharge free up to 36 kV

• High impulse withstand voltage up to 200 kV possible

• High mechanical strength Low sound pressure level do

to special core clamping and low core induction

• Low no load and load losses do to high grade core

material, low core induction and copper windings


Advantages of cast resin transformers

• Corrosion Protection, all steel construction parts like the

core clamps or the wheel base are hot dip galvanised,

screws are of stainless steel

• By using fans power increase of up to 50%

Advantages compared to Oil filled units

• No maintenance under normal environmental conditions

• Short circuit proof design-windings are embedded in resin

• No need for drain pit and oil checking

• No need for fire protection room design


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Ritz Instrument Transformers GmbH

Vielen Dank

Thank You for

Your

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