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: hvsales@maxwell.com
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