MORE POWER. MORE ENERGY. MORE IDEAS.TM

HIGH VOLTAGE CAPACITORS High quality and highly reliable capacitors for circuit breakers, capacitive voltage transformers and laboratory use

Company Insight ®

CONDIS High Voltage Capacitors Maxwell Technologies SA is recognized as the global leader in High Voltage Capacitor Technology due to first-in-class products’ quality and reliability, excellent electrical & mechanical strength resulting in long lifetime and its ability to respond to individual customer requirements. Additional strengths are intensive R&D activities to maintain our market position as well as the leadership role in setting HV capacitor standards.

Our Mission

To provide products for the optimal management of electricity

Our Goals

I To assure a profitable growth while positioning ourselves as leader I To be recognized as an enterprise where the employees are satisfied I To anticipate the needs of the market due to permanent innovation I To develop strong partnerships internally and externally

Our Values

2

Entrepreneurial spirit

Integrity

I I I I

I I I I

Own the job Professionalism Initiative Courage

Respect Honesty Objectivity Authenticity

Team spirit

Velocity

I I I I

I I I I

Communication Support Recognition Satisfaction

Goal oriented Improvement Renewal Passion

Maxwell Technologies SA – CONDIS® HV Capacitors

CONDIS® High Voltage Capacitors provide safe and reliable products for applications in: I Live tank circuit breakers

I Dead tank circuit breakers I GIS circuit breakers

I Capacitive voltage transformers (CVT)

I Laboratories

I Other special HV applications

Maxwell Technologies is the world leader in high voltage capacitor technology, due to:

I Improved technology and quality with automation and in line quality controls

I Flexibility for new or special applications

I Protection against corrosion

I Leadership in setting HV capacitor standards

I Standardised construction I Excellent mechanical and electrical strength I Short delivery time

I First-in-class products’ quality and reliability

Grading Capacitors

Page

4

Coupling Capacitors

Page

6

GIS Capacitors

Page

8

Capacitive Voltage Divider (CVD)

Page

10

Speciality Capacitors

Page

11

CONDIS Technology

Page

12

Design Details

Page

13

Technical Overview

Page

14

Type Test Overview

Page

16

Certification

Page

18

Inquiry Form

Page

19

I Long lifetime

Table of contents

I Intensive R&D activities to maintain our market position

®

I Flexible, customized-products

3

Grading Capacitors For live tank breakers Grading capacitors used in live tank circuit breakers allow the high voltage to be distributed uniformly in the interrupting chambers. Our years of experience and Know-How in the production of high voltage capacitors make them suitable for all types of applications in the transport and distribution of electrical energy.

Technical specifications Capacitance min

from 200 pF

Nominal voltage Un

from 9kV to 310kv 50/60Hz

Test voltage

up to 600kV 50/60Hz

Lightning impulse voltage

up to 1300kV 1.2/50µs

Switching impulse voltage

up to 1000kV 250/2500µs

Lightning impulse voltage chopped wave

up to 2000kV 1.2/2µs

Vibrations and mechanical shocks

up to 40g

Cantilever strength

from 5kNm to 25kNm

Other values on request 4

Maxwell Technologies SA – CONDIS® HV Capacitors

Porcelain Insulator The table below gives an overview of the standard porcelains and their maximum capacitance. Please note that only the insulators are

I fixing independent of flange diameter

standardised. Changing test voltage levels may result in a change of Cmax. Any capacitance less than or equal to Cmax may be selected. All standard porcelains are equipped with alternating long-short sheds and are in full compliance with IEC 60815. Our «standard» fixing method offers the following advantages:

I interchangeability of old and new CONDIS® capacitors I compatibility with attachment of synthetic composite insulators Other fixing methods available on request

distance between flanges L, [mm]

creepage min [mm]

UN max [kV]

Utest max [kV]

UBIL max [kV]

Uch max [kV]

Cmax in PF for flanges diam. (mm) 210 230 255

Weight in kg for flanges diam. (mm) 210 230 255

1200 1200-1280 1400 1400-1480 1600 1600-1680 1800 1750-1830 2000 2000-2080

4525

125

265

630

815

5000

6400

12000

3700 4525 5260 5650 4500 6315 6300 7180 8800

145

315

750

970

4000

5100

9500

170

375

860

1110

3100

4000

7400

180

435

950

1225

3200

5000

7500

300

520

1050

1355

2500

4000

6100

75 90 78 95 110 116 100 118 125 137 155

95 112 107 121 135 145 130 171 150 196 196

120 125 125 144 155 168 152 187 172 205 ---

2200 2200-2280

8800

300

560

1200

1380

2500

4000

6100

190

220

---

See design details on page 13

Composite Insulator The composite insulator consists of a cylindrical tube of fibre-reinforced epoxy coated with Silicon Rubber (SiR). distance between flanges L, [mm] 1200 1184-1232 1400 1376-1424 1500 1472-1520 1600 1568-1664 1800 1760-1856 2000 1952-2048 2200 2192-2240 2600 2576-2672

The sheds are integrated into the coating. The electrical and mechanical properties of the composite insulator exceed those of all known synthetic materials and porcelain. SiR maintains its superior hydrophobicity and resistance to creepage currents over decades of use. Capacitors based on composite insulators offer the following advantages:

I I I I I

explosion-proof reduced weight of capacitor easier handling fail-safe behaviour reduced volume thanks to CONDOR technology A standard range of products is shown in the table below. Specials are available on request

creepage min [mm]

Un max [kV]

Utest max [kV]

UBIL max [kV]

Uch max [kV]

Cmax in pF for flanges diam. [mm] 160 200

weight in kg for flanges diam. [mm] 160 200

2990

125

265

630

815

4500

12500

25

40

3445

145

315

750

970

3800

10500

28

44

3670

160

350

800

1040

3300

9500

32

47

4010

170

375

860

1110

3200

9000

37

50

4575

180

435

950

1225

3000

8500

35

55

4910

210

520

1050

1355

2300

7900

48

60

7956

250

560

1200

1380

2500

6200

42

65

9463

300

600

1300

1680

2500

7000

50

80

See design details on page 13

5

Coupling Capacitors For dead tank breakers Coupling capacitors are used on dead tank breakers to limit the overvoltage coming from a short distance fault on a low capacitive line.

Technical specifications Capacitance min

from 300 pF

Nominal voltage Un

from 9kV to 250kV 50/60Hz

Test voltage

up to 600kV 50/60Hz

Lightning impulse voltage

up to 1300kV 1.2/50µs

Switching impulse voltage

up to 1000kV 250/2500µs

Lightning impulse voltage chopped wave

up to 2000kV 1.2/2µs

Vibrations and mechanical shocks

up to 40g

Cantilever strength

from 5kNm to 25kNm

Other values on request 6

Maxwell Technologies SA – CONDIS® HV Capacitors

standardised. Changing test voltage levels may result in a change of Cmax. Any capacitance less than or equal to Cmax may be selected. All standard porcelains are equipped with alternating long-short sheds and are in full compliance with IEC 60815. Our «standard» fixing method offers the following advantages:

Porcelain Insulator The table below gives an overview of the standard porcelains and their maximum capacitance. Please note that only the insulators are U nom [kV] 72.5

U BIL [kV] 350

145

650

170 245

750 900

1050

362 550

1300 1800

Cmax [pF] 5200 12000 3000 6000 12000 3000 3000 5500 10000 15000 5500 9000 12000 7000 1250

Total length [mm] 780 705 1550 1430 1396 1750 1950 1790 1953 1825 2327 2065 2215 2860 4360

Composite Insulator The composite insulator consists of a cylindrical tube of fibre-reinforced epoxy coated with Silicon Rubber (SiR). The sheds are integrated into the U nom [kV] 72.5 145

U BIL [kV] 350 650

170

750

245

900

362

1050 1300

550

1800

Cmax [pF] 12000 3000 6000 12000 3000 5000 12000 3000 10000 15000 30000 12000 2000 7000 8000 1250

Distance between flange [mm] 550 511 1400 1250 1186 1600 1800 1594 1743 1575 2131 1871 2005 1440 –

Distance between flange [mm] 847 1424 1196 1196 1414 1426 1530 1808 1731 1628 1575 2187 2674 2596 2348 -

I interchangeability of old and new ® CONDIS capacitors I compatibility with attachment of synthetic composite insulators Other fixing methods available on request

Creepage distance [mm] 2700 1700 3700 3700 3500 5250 4500 5250 5537 5500 6140 3960 5210 7000 14360

coating. The electrical and mechanical properties of the composite insulator exceed those of all known synthetic materials and porcelain. SiR maintains its superior hydrophobicity and resistance to creepage currents over decades of use. Capacitors based on composite insulators offer the following advantages:

Total lenght [mm] 977 1543 1347 1347 1543 1556 1670 1943 1871 1818 1825 2327 2809 2726 2538 4360

I fixing independent of flange diameter

Diameter of flange # of pieces [mm] in series 210 1 255 1 210 1 230 1 285 1 210 1 210 1 255 1 285 1 380 1 230 1 155 1 285 1 340 2 255 2 See design details on page 13

I I I I I

explosion-proof reduced weight of capacitor easier handling fail-safe behaviour reduced volume thanks to CONDOR technology A standard range of products is shown in the table below. Specials are available on request

Creepage distance [mm] 1986 5124 2907 2907 5114 5038 3856 6573 4309 3938 3918 5346 9832 6348 5816 14990

Diameter of flange # of pieces [mm] in series 200 1 160 1 200 1 200 1 160 1 200 1 232 1 160 1 200 1 286 1 344 1 200 1 160 1 200 1 232 1 160 2 See design details on page 13

7

GIS Capacitors For gas insulated circuit breakers GIS circuit breakers for tough environments with extreme temperature variations, dust, pollution or confined space use grading capacitors. Coupling capacitors for special applications are also available for this type of switchgear.

Technical specifications Capacitance min

from 200 pF

Nominal voltage Un

up to 500kV 50/60Hz

Test voltage

up to 720kV 50/60Hz

Lightning impulse voltage

up to 1200kV 1.2/50µs

Switching impulse voltage

up to 1000kV 250/2500µs

Lightning impulse voltage chopped wave

up to 2000kV 1.2/2µs

Vibrations and mechanical shocks

up to 40g

Other values on request 8

Maxwell Technologies SA – CONDIS® HV Capacitors

Typical GIS Capacitor Design

HV GIS capacitors are dedicated to various types of Gas Insulated Switchgear, and the design is therefore customer-specific. The general design can be seen in the outline drawing above. Independent of the application the flanges, tubes, and field distribution will remain unchanged. Backward compatibility with our former technology is 100% guaranteed.

However, the CONDOR technology will often permit new concepts and designs, i.e. by higher capacitance in a given space. The table below shows selected types of GIS capacitors to give an idea of the maximum capacitance ® possible with the CONDOR technology.

flange diameter D, [mm]

overall length L tot, [mm]

flashover length L, [mm]

C max [pF]

UN max [kV]

Utest max [kV]

UBIL max [kV]

Uch max [kV]

100 100 120 120 120 120 140 140 140 174 174

600 750 600 750 900 1300 900 900 1200 1300 1500

546 696 530 680 830 1230 828 828 1128 1210 1410

700 600 1400 1100 950 950 3100 1500 1000 2000 3500

180 280 180 210 140 250 110 140 280 250 250

460 570 420 460 400 570 300 440 700 570 570

1050 1150 970 1050 1160 1500 800 1160 1700 1500 1500

1150 1270 1150 1365 1700 2000 1200 1700 2000 2000 2000

9

Capacitive Voltage Divider (CVD) Capacitor voltage dividers (CVD) are a component used on complete capacitive transformers to measure the voltage and/or the power on a high voltage overhead power line.

Technical specifications Capacitance

from 1nF to 30nF

Nominal voltage Un

from 72.5kV to 765kV

Test voltage

up to 1200kV (525kV/section)

Lightning impulse voltage

up to 2425kV (1050kV/section)

Other values on request Standards:

IEC 60 044-05 IEC 60358 IEEE C93.1

Um ANSI / IEC [kV]

Maximum capacitance [pF]

Utest ANSI / IEC [kV]

UBIL ANSI / IEC [kV]

Overall length [mm]

Creepage distance [mm]

Number of section

Type of Design

Temp. range [oC]

72.5 110/123 110/123 145 145 170 220/250 300/330 362 420 500/550 750

23000 12000 15000 10000 11500 10000 9000 7000 5000 4500 4500 3000

140/165 230/265 230/266 230/266 275/320 325/370 460/525 460/510 510/785 630/680 680/900 1150

350 550 550 550 650 750 1050 1050 1175/1550 1425 1550/1800 2250

1040 1205 1320 1415 1530/1740 1740/1940 2300/2440 3075/3495 3495 3895 4895 7350

2200 3160 3160 3880 3880/4600 4600/5315 6510/6990 7760/9200 9200 10630 13980 20970

1 1 1 1 1 1 1 2 2 2 2 3

A* A* B* A* B* B* B* B* B* B* B* B*

-50/70 -25/71 -50/70 -25/70 -50/70 -50/70 -50/70 -50/70 -50/70 -50/70 -50/70 -50/70

* See examples of two design types on page 13 10

Maxwell Technologies SA – CONDIS® HV Capacitors

Speciality Capacitors For laboratory applications

HV Capacitors can be used in the laboratory as a: I Coupling capacitor for PD measurement

I HV divider for 50Hz voltage measurement I HV RC divider for impulse voltage measurement I Capacitive load for Series Resonance installation

I Capacitive load for DC installation I Other applications

For special applications

Speciality HV Capacitors can be used as a: I Coupling capacitor for on-site PD measurement

I Coupling capacitor for generator circuit breaker I Other applications

Technical specifications Capacitance

from 150pF to 500nF

Nominal voltage Un

from 20kV to 1000kV

Test voltage

1.2 x Un (or as requested)

PD level

< 1.2 pC

Other values on request

11

CONDIS® Technology Maxwell applies CONDOR (CDOR), the company’s latest technological development, using aluminium foil capacitors with polypropylenepaper mixed dielectric, impregnated with synthetic oil. Within the high voltage capacitors over 100 flat windings are connected in series. Key element of Maxwell’s proprietary CDOR technology is the automated stacking and series connection of the flat windings through welded connections between the individual windings. This allows the suppression of aluminium connections and manual soldering

external to the windings. The CDOR technology offers the following advantages: I Lower weight I shorter lead-time I higher quality and reliability I less variation of the electrical performance I high temperature stability I small size of active parts resulting in lower capacitor cost I superior integration into the designs of the customer

Basic winding Technologies

Automated winding and assembly line

12

CDOR (CONDOR)

CDCT

CDHT

Material

Aluminium foil without manual soldering

Aluminium foil

Aluminium foil

Dielectric

Polypropylene-paper dilectric

Polypropylene-paper dielectric

Paper dielectric

Connection

Welding on fully automated winding and assembly lines

Contact points soldered

Contact points soldered

Loss factor at Un (tan δ)

≤ 20.10

≤ 20.10-4

≤ 50.10-4

-4

Advanced drying installations

Impregnation

Maxwell Technologies SA – CONDIS® HV Capacitors

Design Details Grading and Coupling Capacitors Porcelain Insulator

Composite Insulator

Flange Fixation diam. length d,[mm] L2,[mm] 210 L+64…90 230 L+64…120 255 L+64…134

Total length L tot L+150 L+180 L+194

A [mm]

Flange Fixation diam. length d,[mm] L2,[mm] 160 L+64…90 200 L+64…120

Total length L tot L+127 L+150

A [mm]

115 130 140

78 108

Capacite Voltage Dividers Type A - Example for CVD 72.5 kV

Type B - Example for CVD 362 kV 13

Technical Overview ® of CONDIS Technology Capacitance range CN:

standard types from ~ 150 pF – 10 nF higher capacitance on request

Tolerance on CN:

+/-5% or +/-2% other tolerances on request

Operating voltage Un:

up to 800 kV higher voltage on request

Loss factor (tan δ):

< 20 x 10-4 at 20°C, 50 Hz; < 50 x 10-4 for CDHT

Partial discharge level:

< 5 pC lower levels on request

Ambient temperature during operation Indoor and GIS: Outdoor:

- 40°C to +87.5°C - 55°C to +75°C

Storage temperature: Indoor and GIS: Outdoor:

-55°C to +90°C -55°C to +75°C

Inductance:

typically 1 nH per mm length

Lifetime expectancy:

20-30 years

Impregnation oil:

Blend of benzyltoluene (BT) and dibenzyltoluene (DBT) Guaranteed no PCB content

Installation:

in any position

Max. height above zero allowed: 1000 m other heights on request

14

Maxwell Technologies SA – CONDIS® HV Capacitors

Loss factor (tan δ) behaviour Loss factor (tan δ) versus Temperature

Loss factor (tan δ) versus Voltage

50

50

45 (typical curve at UN) Tg d 10-4

(typical curve at UN) Tg d 10-4

45 cdht

40 35 30 25 20 15

cdor + cdct

10 5

40

cdht

35 30 25 20 15

cdor + cdct

10 5 0

0 -60

-40

0 20 40 -20 temperature (oC)

60

80

0

0.5

1

1.5 U/UN

2

2.5

1

1.5 U/UN

2

2.5

Capacitance behaviour Capacitance versus Temperature

Capacitance versus Voltage

1.05

1.006

1.04

1.02

(typical curve) C/CN

(typical curve) C/CN

1.03 cdht

1.01 1.00 .99

cdor + cdct

.98

1.004

1.002

1

.998

.97 .96

.996

.95 -60

-40

0 20 40 -20 temperature (oC)

60

80

0

0.5

15

Type Test Overview The type test performed by Maxwell Technologies SA cover or exceed the most severe conditions taken from all available international and customer specific standards. We therefore cover all

customers’ specifications and establish a new yardstick regarding quality and reliability. The available test reports are listed below:

Group 1: Outdoor capacitors, porcelain insulators RE 12.0187 STC 95.002 RE 12.0107 RE 12.0108 RE 12.0144

Electrical type tests, full-size capacitors Mechanical type test, full size capacitors Tightness tests (seal) Pressure-temperature tests (endurance) Corrosion test

Group 2: Outdoor capacitors, composite insulators RE 12.0181 STC 95.024

Electrical type tests, full-size capacitors Shock tests, full-size capacitors

Group 3: Indoor and GIS capacitors RE 12.0182 RE 12.0186 STC 93.013 RE 12.0109 RE 12.0110 RE 12.0112

Electrical type tests, full-size capacitors Electrical type tests, full-size capacitors Mechanical type tests, full-size capacitors Tightness tests, full-size capacitors Pressure-temperature tests (endurance) SF6-Penetration

Group 4: Tests valid for group 1, 2 and 3 RE 12.0111 RE 12.0106 RE 12.0115

Mechanical behaviour of the internal part Electrical fatigue tests DC discharge test

Group 5: Outdoor Capacitor Voltage Divider RE 12.0182 RE 12.0183 RE 12.0188 RE 12.0189

16

Electrical type tests, full-size capacitors Electrical type tests, full-size capacitors HF-capacitance and series resistance, capacitance stability HF-capacitance and series resistance, capacitance stability

Maxwell Technologies SA – CONDIS® HV Capacitors

Routine test program

Utest UDP

Voltage

UDP

Un

Un

0,1xUn Capacity tan delta

Capacity tan delta

Partial Discharges

Voltage Test 72s

Partial Discharges

Capacity tan delta

Measurement / Test

As part of our quality process, all CONDIS® capacitors are individually tested as shown in the graph above. The capacitance measurement at 0.1 x nominal voltage and at nominal voltage ensures that no element has a breakdown during the first voltage application.

International standards

The partial discharge measurement ensures that the capacitor has no fabrication defect which could destroy the capacitor. The different voltage tests eliminate the risk of failure of the capacitor during its operation. All tests are done according to IEC and ANSI standards.

Maxwell’s tests are conform to the following international standards: IEC 60060:

High voltage test technique

IEC 60068:

Environmental testing

IEC 60071:

Insulation co-ordination

IEC 62155:

Tests on hollow insulators for use in electrical equipment

IEC 60270:

Partial discharge measurements

IEC 60358:

Coupling capacitors and capacitor dividers

ANSI C93.1:

Power-line carrier coupling capacitors and coupling capacitor voltage transformers

Testing according to other standards are possible on request. 17

Certification Quality and Environment

18

A reputation for high quality is key to Maxwell’s future. Therefore, the company invests heavily in the constant improvement to its entire organization. The brand name

® CONDIS has thus become a synonymous for highest quality for the major manufacturer of circuit breakers worldwide.

Maxwell Technologies SA – CONDIS® HV Capacitors

Inquiry Form

(can be downloaded on our website www.maxwell.com)

19

MORE POWER. MORE ENERGY. MORE IDEAS.TM

Maxwell Technologies SA ® CONDIS High Voltage Capacitors CH-1728 Rossens Switzerland Tel: +41 (0) 26 411 85 00 Fax: +41 (0) 26 411 85 05 E-mail: [email protected] Visit us on the web at: www.maxwell.com We reserve the right to modify this specification at any time without prior notice and without necessarily revising this document. edition 02/10