Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Technical Specification for
Disconnecting Circuit Breakers between 72.5 – 800 kV
Based on
International Electrotechnical Commission (IEC)
1(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
TABLE OF CONTENT
1
DISCONNECTING CIRCUIT BREAKERS .................................................................... 3
1.1
SCOPE .................................................................................................................... 3
1.2
GENERAL REQUIREMENTS ........................................................................................ 3
1.3
STANDARDS ............................................................................................................ 3
1.4
SERVICE CONDITIONS .............................................................................................. 3
1.5
DISCONNECTING CIRCUIT BREAKER RATINGS ............................................................. 3
1.6
DESIGN REQUIREMENTS ........................................................................................... 4
1.6.1 Density monitoring ............................................................................................. 4
1.6.2 Operating mechanisms disconnecting circuit breaker ......................................... 4
1.6.3 Locking Mechanism disconnecting circuit breaker .............................................. 5
1.6.4 Earthing switch (if applicable) ............................................................................. 5
1.6.5 Electrical interlocking disconnecting circuit breaker ............................................ 6
1.6.6 Support structures .............................................................................................. 6
1.6.7 Central control cabinet/Integrated control cabinet (when applicable) .................. 6
1.6.8 Controlled switching (when applicable) .............................................................. 7
1.7
TESTS ..................................................................................................................... 8
1.7.1 Type tests on disconnecting circuit breakers ...................................................... 8
1.7.2 Routine tests on disconnecting circuit breakers .................................................. 8
2
TECHNICAL SCHEDULE DISCONNECTING CIRCUIT BREAKER ............................. 9
3
REVISION HISTORY....................................................................................................20
TABLE OF FIGURES
Table 1 Electrical interlocking scheme of DCB ...................................................................... 6
Table 2 Zink coating table ..................................................................................................... 6
Table 3 Ambient and site conditions ...................................................................................... 9
Table 4 General and common data for all disconnecting circuit breakers .............................. 9
Table 5 Specification DCB 72.5kV ........................................................................................10
Table 6 Specification DCB 123kV .........................................................................................11
Table 7 Specification DCB 145kV .........................................................................................12
Table 8 Specfication DCB 170kV .........................................................................................13
Table 9 Specification DCB 245kV .........................................................................................14
Table 10 Specification DCB 300kV .......................................................................................15
Table 11 Specification DCB 362kV .......................................................................................16
Table 12 Specification DCB 420kV .......................................................................................17
Table 13 Specification DCB 550kV .......................................................................................18
Table 14 Specification DCB 800kV (Not Applicable for 60Hz) ..............................................19
2(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
1
1.1
DISCONNECTING CIRCUIT BREAKERS
Scope
These specifications cover general requirements for the design, manufacture and
testing of disconnecting circuit breakers (DCB).
1.2
General requirements
The disconnecting circuit breakers (DCB) shall be of the live tank type for outdoor
installation, using SF6 or alternative environmental friendly extinguishing medium gas
as the insulating and current extinguishing medium. Oil and vacuum is not accepted.
For disconnecting circuit breakers with single-pole operation, local and remote threepole operation shall be possible.
The operating mechanism should preferably be of the motor-charged spring type.
However, other types of mechanisms can be considered, e.g., motor drives.
The manufacturer shall ensure trip-free operation.
Neither pre-insertion resistors nor grading capacitors bridging the isolating distance
will be accepted.
1.3
Standards
All apparatus shall be of latest design and shall fulfill all relevant requirements stated
in applicable standards, referred to for each apparatus.
Summary of important Standards for this specification:
IEC 62271-108 High-voltage switchgear and controlgear – Part 108: High-voltage
alternating current disconnecting circuit-breakers for rated voltages
of 72,5 kV and above
IEC 62271-100 High-voltage switchgear and controlgear – Part 100: Alternatingcurrent circuit-breakers
IEC 62271-102 High-voltage switchgear and controlgear – Part 102: Alternating
current disconnectors and earthing switches
Summary of important Guidelines for this specification:
IEC 62271-300 Guideline for High-voltage alternating current circuit-breakers - Guide
for seismic qualification of high-voltage alternating current circuitbreakers
1.4
Service conditions
The manufacturer shall ensure that the disconnecting circuit breakers (DCB) will
operate satisfactorily in installations with service conditions as specified under Table
3 Ambient and site conditions.
1.5
Disconnecting circuit breaker ratings
The disconnecting circuit breakers (DCB) shall comply with the data indicated under
Table 4 General and common data for all disconnecting circuit breakers and relevant
DCB specification.
3(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
1.6
1.6.1
Design requirements
Density monitoring
The disconnecting circuit breakers (DCB) shall be provided with temperaturecompensated density meters for indication of low gas density (using reference
volume). The density meters shall monitor gas pressure and provide outputs as
follows: should the gas density fall to the recommended density levels for refill/low
gas density and trip-close/lockout:
- Stage 1 Alarm
- Stage 2 Trip-close/Lockout
The outputs of the density meters shall include contacts for substation alarm and
lockout of all operation of the disconnecting circuit breaker.
Each density meter should include a manometer, readable from ground level,
preferably with a scale with indication of the absolute pressure in MPa. One density
meter per operating mechanisms is preferable.
The disconnecting circuit breakers shall have a mechanically linked indication system
which at all times gives a clear and unambiguous representation of the position of the
main contacts – preferable one per pole. The indication shall be easily readable from
ground level.
1.6.2
Operating mechanisms disconnecting circuit breaker
The operating mechanism cabinets shall include the following features and
equipment:

A control panel with three (four) selector switches;
o
Positions LOCAL-REMOTE-DISCONNECTED
o
Control switch ON/OFF for circuit breaker operation)
o
Control switch LOCK/UN-LOCK for locking device operation
o
(OPTIONAL) Control switch OPEN/CLOSE for earthing switch
operation

The springs shall be charged by an electric motor, preferably a universal type.
The motor shall be protected by a miniature circuit breaker with auxiliary
contacts for indication. When the springs are charged, a contactor controlled
by a limit switch shall disconnect the motor circuit.
A mechanical or electrical indication, visible from outside the cabinet, shall
indicate when the springs are fully charged or un-charged.
Under no conditions shall it be possible to perform closing or tripping
operations without the appropriate springs being fully charged.

The operating mechanism shall include features for charging the closing
springs manually by means of a lever. When the lever is used the motor circuit
shall be de-energized.

Relays for lockout ON/OFF operation of the disconnecting circuit breaker in
case the gas pressure has dropped to the lockout level.

Heating elements; one element permanently energized and one operated by a
thermostat, or alternatively, a humidity detector. The heating elements shall
be protected by a miniature circuit breaker with auxiliary contacts.
4(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23

The wiring in the cabinet should be carried out with stranded copper cable
with sufficient cross-section area to withstand the currents flowing in auxiliary,
control and motor circuits. The cables should be marked along its’ whole
length with wiring number and destination.
1.6.3
Locking Mechanism disconnecting circuit breaker
The Locking mechanism for the DCB shall provide the following:
 When DCB is locked in open position, operation of the circuit breaker should
be both mechanically locked and electrically disabled.
 Motor operation from remote or local. Manual operation as backup.
 Electrical interlocking between the DCB, and if applicable earth switch, for
safe operation according to Table 1 Electrical interlocking scheme of DCB.
 A facility shall be provided to externally padlock the DCB in “locked” position.
 The padlock holes shall be accessible from the ground level.
 The indication of DCB being locked in open position shall be visible from
ground level, by use of suitable indication, with the control cabinet door
closed.
1.6.4
Earthing switch (if applicable)
The Earthing switch for the disconnecting circuit breaker (DCB) shall contain the
following features:

The earthing switches shall be motor-operated with manual operation as a
back-up. The mechanism shall be equipped with a mechanical lever for
manual operation during maintenance and emergency operation. When the
lever is used, the motor circuit shall be isolated.

The operating mechanism should be located in painted aluminum cabinet,
same requirements for corrosion resistance and degree of protection as the
operating mechanism of the disconnecting circuit breaker.

A heating element shall be included in the operating mechanism of the
earthing switch.

The earthing switch shall be operated by a motor connected to the operating
shaft, either directly or through a gear train.

The motor shall be operated remotely or at disconnecting circuit breaker
control cabinet and should be protected by a miniature circuit breaker.

When the earthing switch has reached its end position, the motor circuit shall
be interrupted by a limit switch.

Selector switch [REMOTE-LOCAL-DISCONNECTED] for earthing switch
should be common with the disconnecting circuit breaker selector switch and
located the disconnecting circuit breaker operating mechanism or in the
central control cabinet.

Connection from disconnecting circuit breaker is made by quick connection
terminals.

Electrical interlocking between the DCB, and locking device, for safe operation
according to Table 1 Electrical interlocking scheme of DCB.

Pad-lockable in open and closed position
5(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
The requirements specified for the control panel, terminals and internal cabling in
the disconnecting circuit breaker operating mechanism are also valid for the
operating mechanism for the earthing switch.
1.6.5
Electrical interlocking disconnecting circuit breaker
Table 1 Electrical interlocking scheme of DCB
Electrical interlocking in DCB
Main switch position
Electrical interlocking for DCB
Local
Operation only possible from breaker
Remote
Operation only possible from control room
Disconnected
No operation possible
Breaker position
Breaker operation
possible
Operation of locking device
possible
Operation of Earthing
Switch possible (if built
on)
Closed
Yes
No
No
Open
Yes
Yes
No
Open and locked
No
Yes
Yes
Open, locked and earthed
No
No
Yes
1.6.6
Support structures
Each disconnecting circuit breaker pole should be mounted on its separate support
structure. Alternatively, the three poles can be mounted on a common support beam.
The support structure should be made of hot-dip galvanized steel.
The zinc coating shall comply with EN-ISO 1461, DIN 50976 or ASTM A123 and
ASTM A153 (for fasteners).
Table 2 Zink coating table
Steel thickness (mm)
Average zinc coating (m)
>6
115
3-6
95
1-3
70
The support structure should be of a sufficient height, providing minimum 2.25 meters
ground clearance to lower part of insulator.
1.6.7
Central control cabinet/Integrated control cabinet (when applicable)
Applicable for single pole operated disconnecting circuit breakers. In order to achieve
local three-pole operation of single-pole operated disconnecting circuit breakers, a
central control cabinet (CCC)/integrated control cabinet (ICC) should be provided.
The central cabinet should include selector switches for operation and position
selection as described under Operating mechanisms disconnecting circuit breaker
6(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
above.
The requirements for internal cabling and terminals in the operating mechanism
cabinets are otherwise valid.
1.6.8
Controlled switching (when applicable)
Controlled switching by means of adaptive type will be the preferred method, unless it
can be proven by field experience that said method does not dramatically improve
system reliability/operability.
For energizing of no-load transformers, controlled switching by means of remnant flux
calculation is preferable; however this shall be observed on a case-by-case basis,
depending on field experience with similar system configuration characteristics.
7(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
1.7
1.7.1
Tests
Type tests on disconnecting circuit breakers
The following mandatory type tests should be carried out in accordance with IEC
62271-108:

Dielectric tests

Radio interference tests

Measurement of the resistance of the main circuit

Temperature rise tests

Short-time withstand current and peak withstand current tests

Verification of the degree of protection

Tightness tests

Mechanical (M1/M2 class) and environmental tests

Basic short-circuit test duties

Short-line fault tests

Out-of-phase making and breaking tests

Capacitive current switching tests

Tests to verify the proper function of the position indicating device

Electrical Endurance Combined Function Test

Mechanical Endurance Combined Function Test
In addition to the mandatory type tests as per IEC 62271-108, the following tests
should be carried out when applicable:

Switching of shunt reactors in accordance with IEC 62271-110

If required by geographic location, seismic withstand verifications are
recommended as per guideline IEC 62271-300. Calculations of the circuit
breakers withstand capability against seismic action are also acceptable.
Type tests shall be performed by an independent accredited European laboratory. If
the manufacturer can show evidence through certified reports on performed type
tests on the disconnecting circuit breakers, the requirements for execution of tests
can be waived.
1.7.2
Routine tests on disconnecting circuit breakers
The disconnecting circuit breakers shall be routine tested in accordance with
IEC 62271-108.
Eventual Earthing switch may be tested separately as long as interlocking in secured
according to circuit diagram.
8(20)
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
2
TECHNICAL SCHEDULE DISCONNECTING CIRCUIT BREAKER
Table 3 Ambient and site conditions
DISCONNECTING CIRCUIT BREAKER SPECIFICATION
Parameter description for
disconnecting circuit breaker
UNIT/options
Schedule A
Schedule B
Min. Required Data
Guarantee data
AMBIENT AND SITE CONDITIONS
Temperature range :
- Minimum temperature
- Maximum temperature
Site altitude
If site altitude is higher than 1000 m.a.s.l. supplier
must do the altitude correction and provide suitable
equipment.
Seismic qualification level
Minimum nominal specific creepage distance
[°C]
-25
[°C]
+40
m.a.s.l.
≤1000
AF1/AF3/AF5
[mm/kV]
25
Wind velocity
[m/s]
34
Ice class
[mm]
10
Table 4 General and common data for all disconnecting circuit breakers
GENERAL/COMMON DATA FOR ALL DISCONNECINTG CIRCUIT BREAKERS
Standards to fulfill/test against
Frequency
Operating voltage
Motor
Heater
Number of trip coils
Number of close coils
Manual trip
Electro-Mechanical trip counter (non-resettable)
Anti pumping relay
Spring Charge Indication
Trip Coil Supervision
[Hz] 50/60
[V DC]
[V DC]
[V AC]
-
Miniature circuit breaker (MCB)
-
Under voltage relay
Minimum number of free auxiliary contacts (NO/NC)
in DCB operating mechanism
Minimum number of free auxiliary contacts (NO/NC)
in earthing switch operating mechanism
Bursting disc
-
5/5
2/2
-
No
IEC(40) 9−hole +
NEMA(44.5) 4−hole
HV Terminals
Light in cabinet(s)
Creepage distance (phase to phase)
IEC 62271-108
&
IEC 62271-100
50
XXX (+10% -15%)
XXX (+10% -15%)
XXX
2
1
Yes, Internal
Yes
Yes
Yes
Yes, Internal
Yes, heater and motor
circuit
No
[mm/kV]
Type of insulator and color
-
Type of cubical
Protection class
Corrosion class
-
9(20)
Yes, LED
25
Composite/Grey with
silicone rubber
Painted Aluminum
IP55
C4
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 5 Specification DCB 72.5kV
Specific data for DCB 72.5kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
1-pole/3-pole
Number of poles
Phase to phase distance
[mm]
Type of drive
Spring/Motor
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
1.3/1.5
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
MECHANICAL CHARACTERISTICS
Opening time
Closing time
Breaking time
Mechanical endurance class
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
Type of operation, Rated short circuit current, Rated
voltage level, Rated frequency, Rated insulation level
Mechanical endurance class
General class
Electrical endurance class
Operation
Padlocking possible in positions Open and Close
Requested ratings
Show product name
3-pole
3
1500
Spring
72.5
325
375
N/A
N/A
140
160
2750
31.5
3
45
1.5
C2
10
125
-
Yes/No
State your value
SF6(SF6/N2; SF6/CF4)
or CO2 + O2
Yes
[ms]
[ms]
[ms]
M1/M2
-
(XX±X)
≤60
<50
M2
O-0.3s-CO-3min(s)-CO
Yes/No
Yes
-
Same as DCB
-
M1
Class A
E0
Local/Remote/Manual
Yes
-
10(20)
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 6 Specification DCB 123kV
Specific data for DCB 123kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
1-pole/3-pole
Number of poles
Phase to phase distance
[mm]
Type of drive
Spring/Motor
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
1.3/1.5
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
MECHANICAL CHARACTERISTICS
Opening time
Closing time
Breaking time
Mechanical endurance class
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
Type of operation, Rated short circuit current, Rated
voltage level, Rated frequency, Rated insulation level
Mechanical endurance class
General class
Electrical endurance class
Operation
Padlocking possible in positions Open and Close
Requested ratings
Show product name
3-pole
3
1750
Spring
123
550
630
N/A
N/A
230
265
3150
31.5
3
45
1.5
C2
31.5
140
-
Yes/No
State your value
SF6(SF6/N2; SF6/CF4)
or CO2 + O2
Yes
[ms]
[ms]
[ms]
M1/M2
-
(XX±X)
≤60
<50
M2
O-0.3s-CO-3min(s)-CO
Yes/No
Yes
-
Same as DCB
-
M1
Class A
E0
Local/Remote/Manual
Yes
-
11(20)
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 7 Specification DCB 145kV
Specific data for DCB 145kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
1-pole/3-pole
Number of poles
Phase to phase distance
[mm]
Type of drive
Spring/Motor
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
1.3/1.5
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
MECHANICAL CHARACTERISTICS
Opening time
Closing time
Breaking time
Mechanical endurance class
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
Type of operation, Rated short circuit current, Rated
voltage level, Rated frequency, Rated insulation level
Mechanical endurance class
General class
Electrical endurance class
Operation
Padlocking possible in positions Open and Close
Requested ratings
Show product name
3-pole
3
1750
Spring
145
650
750
N/A
N/A
275
315
3150
40
3
45
1.5
C2
50
160
-
Yes/No
State your value
SF6(SF6/N2; SF6/CF4)
or CO2 + O2
Yes
[ms]
[ms]
[ms]
M1/M2
-
(XX±X)
≤60
<50
M2
O-0.3s-CO-3min(s)-CO
Yes/No
Yes
-
Same as DCB
-
M1
Class A
E0
Local/Remote/Manual
Yes
-
12(20)
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 8 Specfication DCB 170kV
Specific data for DCB 170kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
1-pole/3-pole
Number of poles
Phase to phase distance
[mm]
Type of drive
Spring/Motor
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
1.3/1.5
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
Yes/No
Type of operation, Rated short circuit current, Rated
voltage level, Rated frequency, Rated insulation level
Mechanical endurance class
General class
Electrical endurance class
Operation
Padlocking possible in positions Open and Close
-
13(20)
Requested ratings
Show product name
3-pole
3
2500
Spring
170
750
860
N/A
N/A
325
375
3150
40
3
45
1.5
C2
63
160
State your value
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
Yes
Same as DCB
M1
Class A
E0
Local/Remote/Manual
Yes
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 9 Specification DCB 245kV
Specific data for DCB 245kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
1-pole/3-pole
Number of poles
Phase to phase distance
[mm]
Type of drive
Spring/Motor
Include Central Control Cabinet (CCC) for 1-pole
Not Applicable/
operation (If 3-pole operation this is Not Applicable)
Yes/No
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
Yes/No
Type of operation, Rated short circuit current, Rated
voltage level, Rated frequency, Rated insulation level
Mechanical endurance class
General class
Electrical endurance class
Operation
Padlocking possible in positions Open and Close
-
14(20)
Requested ratings
Show product name
3-pole
3
3000
Spring
Not Applicable
245
1050
1200
N/A
N/A
460
530
3150
50
3
45
1.3
C2
125
250
State your value
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
Yes
Same as DCB
M1
Class A
E0
Local/Remote/Manual
Yes
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 10 Specification DCB 300kV
Specific data for DCB 300kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
1-pole/3-pole
Number of poles
Phase to phase distance
[mm]
Type of drive
Spring/Motor
Include Central Control Cabinet (CCC) for 1-pole
Not Applicable/
operation (If 3-pole operation this is Not Applicable)
Yes/No
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
Yes/No
Type of operation, Rated short circuit current, Rated
voltage level, Rated frequency, Rated insulation level
Mechanical endurance class
General class
Electrical endurance class
Operation
Padlocking possible in positions Open and Close
-
15(20)
Requested ratings
Show product name
3-pole
3
3500
Spring
Not Applicable
300
1050
1050 (+170)
850
700 (+245)
395
435
3150
50
3
45
1.3
C2
200
315
State your value
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
Yes
Same as DCB
M1
Class A
E0
Local/Remote/Manual
Yes
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 11 Specification DCB 362kV
Specific data for DCB 362kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
Number of poles
Type of drive
Spring/Motor
Include Central Control Cabinet (CCC)
Yes/No
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
Capacitive current switching class
C1/C2
Line charging breaking current
A
Cable charging breaking current
A
Single/Back to Back capacitor bank switching current
A
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
FIBER OPTIC CURRENT SENSOR (FOCS)
Include FOCS with DCB
Yes/No
Rated current
[A]
Corresponding accuracy class to rated current
Communication protocol
Communication output
Temperature range
[°C]
CONTROLLED SWITCHING
Controlled switching required
Yes/No
Application (No-load Overhead line, Power
Transformer, Capacitor Bank, Filter Bank, Shunt
Reactor, Other)
16(20)
Requested ratings
Show product name
1-pole
3
Spring
Yes
362
1175
1175 (+205)
950
800 (+295)
450
520
3150
50
3
45
1.3
C2
315
355
0,XX (0,XX SF6/0,XX N2)
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
No
Yes
>400
0.2s/5TPE
IEC 61850-9-2LE
Optical Ethernet
-40 to +50
No
-
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 12 Specification DCB 420kV
Specific data for DCB 420kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
Number of poles
Type of drive
Spring/Motor
Include Central Control Cabinet (CCC)
Yes/No
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
MPa(abs)
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
FIBER OPTIC CURRENT SENSOR (FOCS)
Include FOCS with DCB
Yes/No
Rated current
[A]
Corresponding accuracy class to rated current
Communication protocol
Communication output
Temperature range
[°C]
CONTROLLED SWITCHING
Controlled switching required
Yes/No
Application (No-load Overhead line, Power
Transformer, Capacitor Bank, Filter Bank, Shunt
Reactor, Other)
17(20)
Requested ratings
Show product name
1-pole
3
Spring
Yes
420
1425
1425 (+240)
1050
900 (+345)
520
610
3150
50
3
45
1.3
C2
400
400
0,XX (0,XX SF6/0,XX N2)
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
No
Yes
>400
0.2s/5TPE
IEC 61850-9-2LE
Optical Ethernet
-40 to +50
No
-
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 13 Specification DCB 550kV
Specific data for DCB 550kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
Number of poles
Type of drive
Spring/Motor
Include Central Control Cabinet (CCC)
Yes/No
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
Capacitive current switching class
C1/C2
Line charging breaking current
[A]
Cable charging breaking current
[A]
Single/Back to Back capacitor bank switching current
[A]
OTHER INFORMATION
Filling pressure at 20°C
[MPa(abs)]
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
FIBER OPTIC CURRENT SENSOR (FOCS)
Include FOCS with DCB
Yes/No
Rated current
[A]
Corresponding accuracy class to rated current
Communication protocol
Communication output
Temperature range
[°C]
CONTROLLED SWITCHING
Controlled switching required
Yes/No
Application (No-load Overhead line, Power
Transformer, Capacitor Bank, Filter Bank, Shunt
Reactor, Other)
18(20)
Requested ratings
Show product name
1-pole
3
Spring
Yes
550
1550
1550 (+315)
1175
900 (+450)
620
800
4000
50
3
45
1.3
C2
500
500
0,XX (0,XX SF6/0,XX N2)
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
No
Yes
>400
0.2s/5TPE
IEC 61850-9-2LE
Optical Ethernet
-40 to +50
No
-
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
Table 14 Specification DCB 800kV (Not Applicable for 60Hz)
Specific data for DCB 800kV
All circuit breakers should be tested in accordance with IEC 62271-100 &
IEC 62271-108
Type designation
Type of operation
Number of poles
Type of drive
Spring/Motor
Include Central Control Cabinet (CCC)
Yes/No
DIELECTRIC CHARACTERISTICS
Rated Voltage
[kV]
Lightning impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Switching impulse withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Power frequency withstand voltage :
- phase-to-earth
[kV]
- across the open switching device
[kV]
Continuous current
[A]
Rated short-circuit breaking current:
[kA]
Duration
[s]
DC time constant
[ms]
First-pole-to-clear factor
Capacitive current switching class
C1/C2
Line charging breaking current
A
Cable charging breaking current
A
Single/Back to Back capacitor bank switching current
A
OTHER INFORMATION
Filling pressure at 20°C
MPa(abs)
Insulating gas type
CT brackets included on support structure
Yes/No
MECHANICAL CHARACTERISTICS
Opening time
[ms]
Closing time
[ms]
Breaking time
[ms]
Mechanical endurance class
M1/M2
Rated operating sequence
EARTHING SWITCH DATA (referring to IEC 62271-102)
Earthing switch built on to DCB
FIBER OPTIC CURRENT SENSOR (FOCS)
Include FOCS with DCB
Yes/No
Rated current
[A]
Corresponding accuracy class to rated current
Communication protocol
Communication output
Temperature range
[°C]
CONTROLLED SWITCHING
Controlled switching required
Yes/No
Application (No-load Overhead line, Power
Transformer, Capacitor Bank, Filter Bank, Shunt
Reactor, Other)
19(20)
Requested ratings
Show product name
1-pole
3
Spring
Yes
800
2100
2100 (+455)
1550
1175 (+650)
830
1150
4000
50
3
45
1.3
C2
900
0,XX (0,XX SF6/0,XX N2)
SF6(SF6/N2; SF6/CF4)
No
(XX±X)
≤60
≤50
M2
O-0.3s-CO-3min(s)-CO
No
Yes
>400
0.2s/5TPE
IEC 61850-9-2LE
Optical Ethernet
-40 to +50
No
-
Offered ratings
Technical Specification Disconnecting Circuit Breakers
Specification identification: DCB 72,5 – 800 kV
Create date: 2015-10-23
3
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