© A

BB

AT

AP

- 1

MV

Driv

es N

orth

Am

eric

a

MV Drives North AmericaRandy Huebner

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

2

ATAP Growth!

Outline

1. World Market size & growth

2. ABB specific data

3. Applications in Utilities

4. ABB MV Drive Products

5. North America – Competitors

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

3

ATAP Growth!

MV Drives development World MarketIndex yr 2000

0%

20%

40%

60%

80%

100%

120%

140%

160%

180%

200%

2000 2001 2002 2003 2004

kUSD

kCHF

# Conv

USD/Conv

CHF/Conv

World Market size and growth 00-04

USD CAGR: 15%

CHF CAGR: 6%

Unit CAGR 14%

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

4

ATAP Growth!

Metals

23%

Marine

6%

Cement Mineral

& Mining

8%

Water & Waste

12%

Power

21%

Others

5%

Pulp & Paper

2%

COG

23%

World Market [400 MUSD] I ndustry Segments

World Market 2004 Industry Segments

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

5

ATAP Growth!

Europe29%

China37%

ROW11%

North America23%

World Market Geographically

World Market 2004 geographically (end-user MUSD)

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

6

ATAP Growth!

Unit market shares 2004 -

0.9%

1.1%

1.3%

1.4%

1.4%

1.5%

2.7%

2.9%

3.2%

5.6%

7.6%

9.8%

12.5%

15.0%

16.2%

16.8%

0.0% 2.0% 4.0% 6.0% 8.0% 10.0%

12.0%

14.0%

16.0%

18.0%

GE (Industry)

Chinese - Mingyang, Dongfan & other

Yaskawa

Chinese - Tried

Chinese - AriTime

Hitachi

Fuji

Others (L&T, CTQ, WEG, BHEL)

Alstom /GECELEC /AEG / GEC

Chinese - Harvest

TMEIC Toshiba/Mitsubishi

Siemens

GE-Toshiba

ASI Robicon

ABB

Rockwell/AB

ABB’s position world wide # drives

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

7

ATAP Growth!

Market shares in kUSD - Market size ~400 MUSD

0.5%

0.6%

0.8%

1.3%

1.5%

1.5%

1.7%

2.3%

3.2%

4.5%

6.0%

6.2%

12.4%

13.2%

17.9%

26.3%

0% 5% 10% 15% 20% 25% 30%

Chinese - Mingyang, Dongfan & other

Yaskawa

Hitachi

Fuji

Chinese - Tried

Chinese - AriTime

GE (Industry)

Chinese - Harvest

Others (L&T, CTQ, WEG, BHEL)

Alstom /GECELEC /AEG / GEC

TMEIC Toshiba/Mitsubishi

GE-Toshiba

Rockwell/AB

Siemens

ASI Robicon

ABB

ABB’s position world wide (USD) in 2004

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

8

ATAP Growth!

ABB Drives USA ABB US Drive Headquarters New

Berlin, WI 180M Sales 2004 330 Employees ISO 9001 Facility LV & MV Drives & Motors Power Electronics Ratings: 3 - 135,000HP

TurgiTurgi

ABB MV Drive HeadquartersTurgi Switzerland

MFG Location for MV Drives Products

World leader in MV Drives

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

9

ATAP Growth!

ATAP Projects Business – North America

Ins trum entation L V D rives / L V C ontrol P ro jects E xcitation

A T APP res iden t

G reg S cheu

Bernard Lafrance

Dane Maisel

Rick Hepperla

Pat Hogan

Bernard Lafrance

Joe Maloni

Chuck Clark Mike Wallin

M V M otors / G enerato rsJan-A nders B ergm an

T oron to

M V D rivesR andy H uebner

H ous ton

A dvanced P ow er E lectron icsK ev in D ennis

N ew B erlin

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

10

ATAP Growth!

Project Businesses – U.S. / New Berlin

B usiness C ontro llerJaana S uvanto

E xecu tive A ss is tantD iane H erm ann

M arketingH eather F lanaga n

D ouglas C rockJeff F reis lebenS tephane L evesqueB ob S m onR ick W alm sley

O lli M ans ikka

N orth A m ericanF actory S upport T eam

C huck C lar k

B ill H ejda kH ans K rattigerC hris L arsenT or-E iv ind M oen

A dvanced P ow e rE lectron ics - N .A .

K evin D ennis

C aro l C am pbel lD uane H oernem an nT om K lennerM arko K ukkam aaA rlene M anderyS andy M itchellL ars -E rik T handB ryan W ethere d

L ow V oltageM otors - U .S.

J im C lark

R ichard M aton ic h John D ulasR obert N elsonT im Trum boA aron W ood

M edium V oltageM otors - U .S.

R ay D oran

D om inic C olam eo

L V M otorsD om in ique B inet

M V M otors / L V M otorsA B B C anad a

Jan-A nders B ergm an

A drian G uggisbergB enjam in M agw eC anada (O pen )S teve S chefusD avid T illerB us iness D evelopm ent(O pen)C algary (O pen)H ouston (O pen)R & D (O pen)

M edium V oltageD rives

R andy H uebner

D eepika K othem bak a

C handreka B allm ic kD avid B anksR avi D odballapu rB ruce H ear dR avi K uret iB eau L ow errE rik M artenssonG ary M orrisA li N ilch ia nB ob S chm idtJoe V on S ebo

P ro jectM anagem ent

A nders T roedson

B rian B aldw inT om H arperM ichael K irschnerD ale N em itzB rian O ng

S ystem & D es ignE ngineeringP eter R eind l

O perationsA nders T roedson

P ro ject B us inessesC huck C lar k

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

11

ATAP Growth!

Fields of Application

Cement, Mining and Minerals Conveyors, crushers, mills, fans and pumps

Chemical, Oil and Gas Pumps, compressors, extruders, mixers and blowers

Metals Pumps and fans

Pulp and Paper Fans, pumps, refiners and chippers

Power Generation Fans, pumps, conveyors and coal mills

Water and Waste Water Pump applications, fresh water and waste water

Other Applications Test stands and wind tunnels

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

12

ATAP Growth!

Large Motors Applied in Power Generation

Circulating and Cooling Water Pumps

Boiler Feed Water Pumps

Fans

Compressors

Coal Mills

LCI Starters for Generators

Any of these Motors can use a Drive!!

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

13

ATAP Growth!

Fans

Boiler

Desulfurization Electric precipitator

Chimney

Air preheater

ID FanID Fan Primary fanPrimary fan Secondary fanSecondary fan

Cooling tower fanCooling tower fan

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

14

ATAP Growth!

Visualization of power flow

Source: Hugo Stadler, Lohr GmbH

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

15

ATAP Growth!

Common Applications

ID Fans and Scrubber Upgrades Scrubber upgrade requires

larger ID Fan

Power supply is not large enough to start motor

Matched ID fans to to balance the load

ID fans and FD Fans on swing plants help turn down ratio of the plant

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

16

ATAP Growth!

315

2’000

P (kW)

U (kV)

27’000

5’000

7’000

50’000

Motor Voltage

1.0 2.41.5 4.16 6.03.3

Mo

tor

Po

wer

9’000

10’000

16’000

13.88.06.91.8

ACS 6000cLCI

ACS 1000 Step-Up

ACS 1000A

CS

600

0

AC

S 5

000

MV Drives Portfolio (standard converters)

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

17

ATAP Growth!

Reliability and Availability

Robustness and Performance

Efficiency

Compatibility

ACS 1000, ACS 5000 , ACS 6000

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

18

ATAP Growth!

Reliability - Semiconductors

IGCT semiconductors and 3-level VSI design

Low part count

Least complex and most robust design

No series or parallel connection of power semiconductors

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

19

ATAP Growth!

Reliability – 3 level VSILs1

Ls2

Cdc1

Cdc2

Ccl1

Ccl2

Rs1

Rs2

Vcl1

Vcl2

V1u

V2u

V3u

V4u

V2Nu

V1Nu

V1v

V2v

V3v

V4v

V2Nv

V1Nv

V1w

V2w

V3w

V4w

V2Nw

V1Nw

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

20

ATAP Growth!

Reliable Components

Fuseless design Faster and better protection than medium voltage power fuses

Long-life capacitors Advanced, self-healing, environmental friendly,

foil capacitors have a substantially longer lifetime than electrolytic capacitors

Lower lifetime costs

Built-in input surge protection Surge arresters at the isolation transformer primary side Tolerant to network disturbances

Increased reliability

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

21

ATAP Growth!

Worldwide Service and Support

Installation and commissioning

Training

On-board diagnostics

Remote diagnostics

Customized service programs

Local technical support

Local service support

Spare parts and logistics network

24 x 365 support line

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

22

ATAP Growth!

Robustness and Performance - DTC

Direct Torque Control (DTC) Most powerful control platform

Power loss ride-through of one second

Flying start and automatic restart

Flux optimization

Critical speed avoidance bands

Typical torque response (t) of a DTC drive, compared with flux vector control and open loop pulse width modulation (PWM)

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

23

ATAP Growth!

Robustness and Performance – Power Ride Through

MotorRectifier DC-link Inverter Output filterInputtransformer

Inputsection

U_in

I_s

Udc

M

U

t

ride through

U

t

ride through

n

tride through

T

I

t

ride through

load current

magnetizingcurrent

Vs1

Vs2

S1

At least

1sec f

or main

power and auxil

iary power

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

24

ATAP Growth!

24-pulse or 12-pulse diode rectifiers, fulfilling IEEE 519

No active switching elements on line side interface (only for 4 Q operation)

No filter at the line side No oscillation problems

No power factor compensation

Compatibility – Input / Network

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

25

ATAP Growth!

Compatibility – Fieldbus adapters

Control System Connection to higher-level process controllers

Flexible hardware I/Os for remote control, allowing easy customization

Large variety of available fieldbus interfaces Profibus

Modbus

DeviceNet

LonWorks

CANopen

InterBus-S

Ethernet

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

26

ATAP Growth!

StandardAC Induction

Motor

DCLink

3-level Voltage Source Inverter (VSI)

Sine W aveFilter

IGCT w ith in tegrated gate driver and freew eeling d iode

NPC Diode (N eu tra l C lam p ing D iode)

Legend

ACS 1000 Main Features

Inverter design

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

27

ATAP Growth!

ACS 1000 Sine Filter

Output sine filter Actively controlled LC low pass filter Eliminates virtually all inverter switching harmonics to the motor Keeps motor and bearings common mode voltage free

Inverter output voltage Drive output voltage to the motor

Output Sine Filter

MotorSide

InverterSide

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

28

ATAP Growth!

Compatibility – Common Mode

The produced common mode voltage is only seen by the transformer secondary windings against ground

The Common Mode is keept inside the Drive System

Motor

Input transformerOutput sinefilter

MCB

Converter

Grounding network

Cable

I_Cfuvw_G

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

35A

0 5 10 15 20 25 30

ms

Normal common mode current path

Stray capacitance to ground of:•Transformer•Cables•Converter

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

29

ATAP Growth!

ACS 1000

Air cooled or Water cooled

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

30

ATAP Growth!

ACS1000 Air Cooled Front View

3ft

6.5ftexcl.

air outletcover

10ft

Air Cooled Range:

0.4 - 2 MVA;

2.3, 3.3 and 4kV;

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

31

ATAP Growth!

3ft

6.5ft

15ft

Water Cooled Range:

2 - 6 MVA;

3.3 and 4kV;

ACS1000 Water Cooled Front View

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

32

ATAP Growth!

ACS 1000 Water Cooled Cooling Circuit Overview

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

33

ATAP Growth!

ACS 1000i

Special features: Full integrated solution, including

transformer, input switch and disconnector

Easy to install

Standard 24-pulse rectifier bridge

Small footprint

No auxiliary power required

Three cables in – three cables out!

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

34

ATAP Growth!

General overview ACS 1000i

MotorRectifier DC-link Inverter Output filterInputtransformer

Inputsection

M

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

35

ATAP Growth!

ACS 5000 and ACS 6000

High power drives (5000HP – 40’000HP) Suitable for induction, synchronous and permanent magnet motors

ACS 5000 General drive for pump, fan and compressor applications 6.0 – 6.9kV output voltage

ACS 6000 High performance drive Active front end or diode bridge input Reactive power compensation Single drive and Multi drive topology

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

36

ATAP Growth!

ACS 6/5000Inverter Unit

INU

PowerStack(s)

ACS 5000 and ACS 6000 Common Platform

Pow

er

Mot

or V

olta

ge3k

V6k

V3MVA

5MVA

7MVA

9MVA

12MVA

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

37

ATAP Growth!

Technology Basis 3 level IGCT phase

ACS 6000: One 3 level phase module per motor

phase -> 3.3kV output voltage

ACS 5000: two 3 level phase modules per

motor phase (in series) -> 6.9kV output voltage

To motor

To “converter starpoint”

To motor

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

38

ATAP Growth!

ACS 6000 VSI ”System topology”

Phase modules EMC Filter

DC (-)

DC (+)

DC (NP)

Clamping circuit

Motor

Supplytransformer

LSULine Supply Unit

INUInverter Unit

CBU

Motoring modePower flow

2Q drive

Resistor BrakingUnit (RBU)

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

39

ATAP Growth!

ACS 5000 VSI - MF ”System topology”

Scope of ACS 5000

COU

Auxiliaries

Control

UPS PowerSupply

Auxiliary Power Supply

MCB (Standard)(Pre)TripOpen/Close

Main Power Supply

Control Interface Options:- Oil level Alarm- Overtemp /FLT/Alarm- Gas relay /FLT/Alarm- Transformer supervision FLT/Alarm

MotorIM

1U 1V 1W

Options forcontrol Interface:

- Tacometer- Winding Temp /FLT/Alarm- Bearing Supervision /FLT/Alarm- Cond. Water Det.- Space Heater FB- Cooling Fans FB

T

WCU

Cooling Water

Converter Starpoint

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

40

ATAP Growth!

ACS 5000 12 MVA unit

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

41

ATAP Growth!

North American Market

Market Size

Competitors

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

42

ATAP Growth!

North America – Sales Channel values

DOMESTIC

GE

GE-Toshiba

Rockwell

Robicon

IMPORTED DRIVES

ABB

Siemens

Alstom

Other marginal players (WEG..)

This is our perception of the North American Market.

NA Market - Sales Channel values ~ 150 MUSD (Domestic+Export) ABB

2%

Alstom2%

Other8%

Siemens2%

Rockwell30%ASI Rob

30%

TMEIC&GE26%

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

43

ATAP Growth!

North America – the main players

DOMESTIC

GE

GE-Toshiba

Rockwell

Robicon

IMPORTED DRIVES

ABB

Siemens

Alstom

Other marginal players (WEG..)

This is our perception of the North American Market.

NORTH AMERICA End-User ~100 MUSD (Domestic only)

Alstom2%

Siemens3%

Other2%

ABB4%

ASI Rob34%

Rockwell32%

TMEIC&GE23%

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

44

ATAP Growth!

A closer look at the individual competitors

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

45

ATAP Growth!

Main Competitors

ASI Robicon

AB Rockwell

GE Toshiba

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

46

ATAP Growth!

Robicon

Fighting for time and money

Expressed strategic focus: COG – (Exxon projects)

New HV IGBT module with less parts

New capacitors of “self-healing” film type (developed and used by ABB for 10 years)

We are eagerly waiting for news on who will buy them. Until then – customers are taking a certain risk dealing with them. (Many want to bail out)

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

47

ATAP Growth!

ASI Robicon

Main Products: Baby Harmony and Perfect Harmony

Messages: Company Under chapter 11

Availability ACS 1000 reduces the maintenance required on the drive. There are no

components in the power circuit to be changed and maintained. Robicons Harmony drives requires extensive maintenance work. According

to the user manual:

This results in 8 inspections in the first year, taken 8 to 12 hours per shut-down (increased maintenance and lost production output).

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

48

ATAP Growth!

ASI Robicon

Reliability and Lifetime cost: Capacitors ACS 1000 is designed to minimize lifetime cost. There are for

example no electrolyte capacitors used in the power circuit of the drive.

Robicon use electrolyte capacitors, which have to be changed all 5 years according to their manual.

By changing the capacitors the core of the drive (inverter) has to be disassembled. This brings a high risk of failure (No burne in after reassembly).

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

49

ATAP Growth!

ASI Robicon

Reliability and Lifetime cost: Fuses / Fuseless In ABB medium voltage drives are no power fuses to protect the

converter. The converters are based on a fuseless design.

In Robicon’s Harmony drives all the power cells are protected with fuses.

Fuses

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

50

ATAP Growth!

ASI Robicon

Ride Through ACS 1000 offers a ride through of at least 1s due to DTC. In many

practical situations a ride through of at least 500ms is required (Example: main bus transfers).

Harmony offers a ride through capability of only 6 cycles. -> see flyer

Common tools ABB offers a wide range of automation products. For the different

product, the same tools are used to monitor and configure. ABB’s medium voltage drives use exactly the same tools as ABB’s low voltage drives.

Robicon is only offering a small range of products with automation technologies. This means that product specific tools and skills are required.

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

51

ATAP Growth!

Rockwell

Growing steadily with good profit

Rockwell Control Systems

0

500

1000

1500

2000

2500

3000

3500

4000

4500

2002 2003 2004 2005Q1

0.0%

5.0%

10.0%

15.0%

20.0%

25.0%Control Systems Sales

Earnings

% margin

MUSD

projected based on Q1 -2005 Increasing push into COG (Bohai Bay)

Will be increasing power of PowerFlex 7000 by paralleling drives

Trend-setter in trafo-less drives.

Their technology limits their applications to “less demanding” types like pumps, fans, compressors.. But this is a large market still.

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

52

ATAP Growth!

AB Rockwell

Main Product: PowerFlex7000

Messages: VSI versus CSI

ABB uses voltage source inverters, which allows to use diode rectifiers at the line side.

AB use current source inverters, which requires always active front end (Thyristors or SGCTs).

Today’s state of the art is voltage source inverters -> just consider low voltage

Diodes are much more reliable than thyristors (or SGCTs). Diode rectifiers are causing much less harmonics -> no filter is required,

where for CSI’s always a filter is required (harmonics + power factor)

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

53

ATAP Growth!

AB Rockwell

Active front end An active front end is used to regenerate power to the network – 4Q

operation. Therefore ABB uses active front end drives only if regeneration is required.

AB is pushing active front end also for 2Q operations.

Active front end requires in connection with CSI always a line filter.

The reliability of the active front end is much lower than the reliability of a diode bridge.

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

54

ATAP Growth!

AB Rockwell

Transformer less design ABB uses an insulation transformer on the drive input in order to:

Keep the common mode voltage within the drive system (not seen by the motor and the network)

Cancel harmonics by phase displacement

AB is promoting transformer less design. AB’s topology requires:

Special insulations on the motor, due to high common mode voltage stress.

An input inductor, which has approximately the same impedance like an input transformer.

Higher insulation levels and overvoltage withstand within the converter, because there is no galvanic separation to the network.

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

55

ATAP Growth!

AB Rockwell

SGCT versus IGCT

IGCT (Reverse Conducting)

SGCT

The SGCT has an integrated diode in series to the GCT, where the IGCT has an integrated diode in parallel to the GCT

It follows that the SGCT has higher on state losses due to the fact that tha current pass through the GCT and the diode.

It is expected that the SGCT creates 20% more losses than the IGCT

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

56

ATAP Growth!

GE/Toshiba

A competitor to consider – growing fast in the low powers. Durabilt, T300MVi and “Built for X-tremes”

Bench-mark on prices up 3000 HP

Also active in Rolling Mill and high power applications

States 16 year MTBF – an unrealistic figure in our opinion. Customers need education on this subject

Their service network may not be as strong as they claim. Not all GE offices are capable.

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

57

ATAP Growth!

GE/Toshiba

Product: Dura-Bilt 5iMV or Tosvert T300MVi

Messages: Ride through

ACS 1000 offers a ride through of at least 1s due to DTC. In many practical situations a ride through of at least 500ms is required (main bus transfers).

Dura Built has a ride through capability of only 100ms. See flyer

Tacho / Speed encoder ACS 1000 doesn’t require speed encoders. DTC is a very powerful control scheme,

proved in many thousands of installations worldwide. Dura-Bilt requires tachometer for several applications. This is due to poor control

accuracy and stability. Torque control without encoder has only an accuracy of +- 30% See application guide, flyer

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

58

ATAP Growth!

GE/Toshiba

Cooling ACS 1000 offers water cooled and air cooled drives. Water and air doesn’t

cause any hazard.

Dura-Bilt 5iMV use heat pipes for the air cooled drives in order to get a lower thermal resistance. As cooling medium Fluorinert is used.

Fluorinert gets poisonous in case of overheating. Overheating may occur in case of a semiconductor failure.

Risk for humans

The air “cooled” Dura-Bilt lose thebig advantage of air cooled drives:

There remains a risk of a leaking

Check home page of GE -> Dura-Bilt presentations

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

59

ATAP Growth!

GE/Toshiba

Overvoltage protection: ACS 1000i has always a transformer primary overvoltage protection (surge arrestors in

front of the transformer). This protects the drive and especially the transformer from overvoltages caused in the network and caused by the input main switch.

Dura-Bilt has surge arrestors only in front of the main switch. This means the transformer is not protected against overvoltages caused by the switch.

The transformer gets a higher insulation stress, which can cause short circuits of the transformer windings.

T1

S1

F1 [u, v, w]S2

Ft(u,v,w)

Protection Relay

300/5A

Surge Arrestors of ACS 1000

Between switch and transformer

ACS 1000i

Dura-Bilt

© A

BB

AT

AP

AB

B N

orth

Am

eric

a A

TA

P -

60

ATAP Growth!