Horizontal double break disconnector Type eDB up to 420 kVMaximum reliability and minimal maintenance

2 Horizontal double break disconnector | Product brochure

Disconnectors from ABB ABB disconnectors have been in service across the world for over two decades providing maintenance-free service with the highest records of operational reliability The worldwide experience often under severe climatic conditions is applied for continual product improvement

Applications A mechanical device for providing isolation of power equipment from the network a disconnector is suitable for switching very small currents or where no significant change in voltage occurs across the terminals The option of earthing sections of power systems can be made available by providing each disconnector pole with one or two earthing switches

Regulations

The eDB Disconnectors are designed as per IEC 62271-102 and IEC 62271-1 standards Other international regulations can be met on request

Type tests on the disconnectors are carried out by accredited testing laboratories in accordance with the latest regulations Comprehensive electrical and mechanical routine tests are carried out on the poles and operating mechanism of each disconnector ensuring world class quality

Table of contents

Disconnectors from ABB 2 Applications 2 Regulations 2Maximum reliability and minimal maintenance 3Technical data 4Mode of operation 5Easy installation 6 Main dimensions (mm) 6 Series Installation 7

Product brochure | Horizontal double break disconnector 3

Maximum reliability and minimal maintenance

Minimized contact resistance (energy efficient solution)The current carrying aluminum conductors have no joints to minimize circuit resistance

No external springs in contact fingers for maximum reliability The contact fingers of the moving contacts of disconnector type eDB are designed from special conducting material and without external springs for increased reliability

Easy and quick erection The current carrying conductors and rotary pedestals are designed for easy adjusting and alignment

Low friction design for smooth operation Maintenance-free linkages with stainless steel rod-end bearings require less drive power for operation and provide smooth motion transmission without any disturbance in the settings (Corrosion ndash free electrical and mechanical joints)

Dead center interlocking for reliability under extreme conditions The dead center interlocking of operating mechanisms ensure that there are no inadvertent changes in the open or close switching position even under extreme external conditions such as storms earthquakes etc

Superior design of mechanical interlock The mechanical interlock between the earthing switch and main blade is designed in a way such that there is no scope for malfunction

Ice breaking capacity The disconnectors are capable of operating under severe ice conditions

Strong rotary pedestals This ensures that the deflection remains unchanged at high mechanical loads

Suitable for wide range of environmental conditions The disconnectors can operate in a wide range of temperatures as well as under polluted environmental conditions

Minimal maintenance Superior material and lubricant used in the encapsulation of the pedestals makes the disconnectors practically maintenance-free

Design based on cutting-edge technology and experienceThe horizontal double break disconnectors type eDB consist of a steel base frame with one rotary pedestal insulators current carrying conductors (current path) and driving mechanisms Steel components are hot dip galvanized to protect against atmospheric influences Each of the three phases of the disconnector consists of one insulator mounted on maintenance free sealed rotary pedestal and two support insulators which support terminal pads and fixed contacts which are carried by the steel base frame The current transfer takes place between two stationary terminal pads When closed the contact fingers glides over the fixed contact which establishes connection between the high- voltage terminal pads Flat terminal plates can be provided as per DIN standard 46203 NEMA or any other standards

Fixed contact and terminal pad of 1600 A eDB

Technical data

Technical Data Voltage 725 kV 123 kV 145 kV 170 kV 245 kV 300 kV 362 kV 420 kV

Type designation eDB725 eDB123 eDB145 eDB170 eDB245 eDB300 eDB362 eDB420

Rated voltage (Ur) kV 725 123 145 170 245 300 362 420

Rated frequency (fr) Hz 5060

Rated normal current (Ir) A 1600 2500

Rated short-time withstand

current rated duration of short

circuit (Iktk)

kA s

405063 1

Rated peak withstand

current (Ip)

kAp

25x Ik (for 50 Hz) 26x Ik (for 60 Hz)

Basic Insulation Level

Power frequency withstand

voltage for 1 minute

To earth and between poles

Across the isolating distance

Lightning impulse withstand

voltage

To earth and between poles

Across the isolating distance

Switching impulse withstand

voltage

To earth and between poles

Across the isolating distance

kV

kV

kVp

kVp

kVp

kVp

140

160

325

375

-

-

230

265

550

650

-

-

275

315

650

750

-

-

325

375

750

860

-

-

460

530

1050

1200

-

-

395

435

1050

1050(+170)

850

700(+245)

450

520

1175

1175(+205)

950

800(+295)

520

610

1425

1425(+240)

1050

900(+345)

36 kV on demand

Higher currents on request

3s for 40 kA

4 Horizontal double break disconnector | Product brochure

145 kV eDB disconnector

Mode of operation

The disconnector and earthing switch are operated via independent operating mechanisms

The operating energy from the operating mechanism of the disconnector is transmitted via operating rod to the rotary pedestal The three phases of the disconnector are connected by gang operating linkages for three phase operation During opening and closing operation the current path mounted on rotory insulator rotate through an angle of approximately 76deg

Operating mechanism All disconnectors can be supplied by manual or motor operated mechanism as required by the customer Each three-pole disconnector or earthing switch group requires only one individual operating mechanism(s) The coupling rods between the individual poles can be continuously adapted

Operating mechanisms contain auxiliary switches for control and signaling as well as provisions for electrical interlocks Three phase operation is conducted via mechanical or electrical gang operation

For maximum reliability the main contacts of the disconnector and earthing switch pass through the dead center positions shortly before they reach the end positions This prevents accidental opening or closing of the units due to external influences (eg short-circuits storm earthquake)

Linkages with spherical bearings

Bearing on frame assembly

InterlocksThe disconnector and earthing switch (when supplied) are mechanically interlocked In operating mechanisms a blocking magnet can be installed as an additional interlocking facility which in disconnected condition makes operation of the operating mechanism impossible

Earthing switch unit The earthing switch unit an optional assembly consists of a hinged-type earthing switch fixed at the base frame The unit can be mounted on either of the contact sides or on both sides as required

In case of the earthing switch the operating energy is transmitted to the earthing switch shaft The tubular contact arm switngs upward when the unit is closing

Product brochure | Horizontal double break disconnector 5

Easy installation

The disconnectors are delivered in following assemblies - lower part with rotary pedestals and operating rod current path support insulators and operating mechanism As all mechanical adjustments are carried out in the factory only mounting of the assemblies installation of the coupling rods between the poles connection of the high-tension leads and

the electrical connection leading to the operating mechanisms is required at the site

Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position caused due to tensile forces

Parallel installation

Series installation

A

D

B

E

C

70deg

PminPmin

Pmin Pmin

70deg

Dimensions Voltage (kV)

Type

725

eDB725

123

eDB123

145

eDB145

170

eDB170

245

eDB245

300

eDB300

362

eDB362

420

eDB420

A Support insulator distance (mm) 1230 1720 1720 2200 2800 2800 4800 4800

B Base frame length (mm) 1510 2000 2000 2600 3200 3200 5230 5230

C Insulator height (mm) 770 1220 1500 1700 2300 2300 3650 3650

D Disconnector height (mm) 975 1665 1745 1930 2550 2550 3960 3960

E Earth switch attachment length (mm) 375 max 375 max 375 max 400 max 400 max 400 max 450 1100

P Minimum distance between poles

(mm)

- Parallel arrangement 1270 1750 1750 2330 3520 3430 4755 )

- Series arrangement 1790 2700 3150 3530 4920 5350 6925 )

Main dimensions in drawing (mm)

6 Horizontal double break disconnector | Product brochure

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

2 Horizontal double break disconnector | Product brochure

Disconnectors from ABB ABB disconnectors have been in service across the world for over two decades providing maintenance-free service with the highest records of operational reliability The worldwide experience often under severe climatic conditions is applied for continual product improvement

Applications A mechanical device for providing isolation of power equipment from the network a disconnector is suitable for switching very small currents or where no significant change in voltage occurs across the terminals The option of earthing sections of power systems can be made available by providing each disconnector pole with one or two earthing switches

Regulations

The eDB Disconnectors are designed as per IEC 62271-102 and IEC 62271-1 standards Other international regulations can be met on request

Type tests on the disconnectors are carried out by accredited testing laboratories in accordance with the latest regulations Comprehensive electrical and mechanical routine tests are carried out on the poles and operating mechanism of each disconnector ensuring world class quality

Table of contents

Disconnectors from ABB 2 Applications 2 Regulations 2Maximum reliability and minimal maintenance 3Technical data 4Mode of operation 5Easy installation 6 Main dimensions (mm) 6 Series Installation 7

Product brochure | Horizontal double break disconnector 3

Maximum reliability and minimal maintenance

Minimized contact resistance (energy efficient solution)The current carrying aluminum conductors have no joints to minimize circuit resistance

No external springs in contact fingers for maximum reliability The contact fingers of the moving contacts of disconnector type eDB are designed from special conducting material and without external springs for increased reliability

Easy and quick erection The current carrying conductors and rotary pedestals are designed for easy adjusting and alignment

Low friction design for smooth operation Maintenance-free linkages with stainless steel rod-end bearings require less drive power for operation and provide smooth motion transmission without any disturbance in the settings (Corrosion ndash free electrical and mechanical joints)

Dead center interlocking for reliability under extreme conditions The dead center interlocking of operating mechanisms ensure that there are no inadvertent changes in the open or close switching position even under extreme external conditions such as storms earthquakes etc

Superior design of mechanical interlock The mechanical interlock between the earthing switch and main blade is designed in a way such that there is no scope for malfunction

Ice breaking capacity The disconnectors are capable of operating under severe ice conditions

Strong rotary pedestals This ensures that the deflection remains unchanged at high mechanical loads

Suitable for wide range of environmental conditions The disconnectors can operate in a wide range of temperatures as well as under polluted environmental conditions

Minimal maintenance Superior material and lubricant used in the encapsulation of the pedestals makes the disconnectors practically maintenance-free

Design based on cutting-edge technology and experienceThe horizontal double break disconnectors type eDB consist of a steel base frame with one rotary pedestal insulators current carrying conductors (current path) and driving mechanisms Steel components are hot dip galvanized to protect against atmospheric influences Each of the three phases of the disconnector consists of one insulator mounted on maintenance free sealed rotary pedestal and two support insulators which support terminal pads and fixed contacts which are carried by the steel base frame The current transfer takes place between two stationary terminal pads When closed the contact fingers glides over the fixed contact which establishes connection between the high- voltage terminal pads Flat terminal plates can be provided as per DIN standard 46203 NEMA or any other standards

Fixed contact and terminal pad of 1600 A eDB

Technical data

Technical Data Voltage 725 kV 123 kV 145 kV 170 kV 245 kV 300 kV 362 kV 420 kV

Type designation eDB725 eDB123 eDB145 eDB170 eDB245 eDB300 eDB362 eDB420

Rated voltage (Ur) kV 725 123 145 170 245 300 362 420

Rated frequency (fr) Hz 5060

Rated normal current (Ir) A 1600 2500

Rated short-time withstand

current rated duration of short

circuit (Iktk)

kA s

405063 1

Rated peak withstand

current (Ip)

kAp

25x Ik (for 50 Hz) 26x Ik (for 60 Hz)

Basic Insulation Level

Power frequency withstand

voltage for 1 minute

To earth and between poles

Across the isolating distance

Lightning impulse withstand

voltage

To earth and between poles

Across the isolating distance

Switching impulse withstand

voltage

To earth and between poles

Across the isolating distance

kV

kV

kVp

kVp

kVp

kVp

140

160

325

375

-

-

230

265

550

650

-

-

275

315

650

750

-

-

325

375

750

860

-

-

460

530

1050

1200

-

-

395

435

1050

1050(+170)

850

700(+245)

450

520

1175

1175(+205)

950

800(+295)

520

610

1425

1425(+240)

1050

900(+345)

36 kV on demand

Higher currents on request

3s for 40 kA

4 Horizontal double break disconnector | Product brochure

145 kV eDB disconnector

Mode of operation

The disconnector and earthing switch are operated via independent operating mechanisms

The operating energy from the operating mechanism of the disconnector is transmitted via operating rod to the rotary pedestal The three phases of the disconnector are connected by gang operating linkages for three phase operation During opening and closing operation the current path mounted on rotory insulator rotate through an angle of approximately 76deg

Operating mechanism All disconnectors can be supplied by manual or motor operated mechanism as required by the customer Each three-pole disconnector or earthing switch group requires only one individual operating mechanism(s) The coupling rods between the individual poles can be continuously adapted

Operating mechanisms contain auxiliary switches for control and signaling as well as provisions for electrical interlocks Three phase operation is conducted via mechanical or electrical gang operation

For maximum reliability the main contacts of the disconnector and earthing switch pass through the dead center positions shortly before they reach the end positions This prevents accidental opening or closing of the units due to external influences (eg short-circuits storm earthquake)

Linkages with spherical bearings

Bearing on frame assembly

InterlocksThe disconnector and earthing switch (when supplied) are mechanically interlocked In operating mechanisms a blocking magnet can be installed as an additional interlocking facility which in disconnected condition makes operation of the operating mechanism impossible

Earthing switch unit The earthing switch unit an optional assembly consists of a hinged-type earthing switch fixed at the base frame The unit can be mounted on either of the contact sides or on both sides as required

In case of the earthing switch the operating energy is transmitted to the earthing switch shaft The tubular contact arm switngs upward when the unit is closing

Product brochure | Horizontal double break disconnector 5

Easy installation

The disconnectors are delivered in following assemblies - lower part with rotary pedestals and operating rod current path support insulators and operating mechanism As all mechanical adjustments are carried out in the factory only mounting of the assemblies installation of the coupling rods between the poles connection of the high-tension leads and

the electrical connection leading to the operating mechanisms is required at the site

Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position caused due to tensile forces

Parallel installation

Series installation

A

D

B

E

C

70deg

PminPmin

Pmin Pmin

70deg

Dimensions Voltage (kV)

Type

725

eDB725

123

eDB123

145

eDB145

170

eDB170

245

eDB245

300

eDB300

362

eDB362

420

eDB420

A Support insulator distance (mm) 1230 1720 1720 2200 2800 2800 4800 4800

B Base frame length (mm) 1510 2000 2000 2600 3200 3200 5230 5230

C Insulator height (mm) 770 1220 1500 1700 2300 2300 3650 3650

D Disconnector height (mm) 975 1665 1745 1930 2550 2550 3960 3960

E Earth switch attachment length (mm) 375 max 375 max 375 max 400 max 400 max 400 max 450 1100

P Minimum distance between poles

(mm)

- Parallel arrangement 1270 1750 1750 2330 3520 3430 4755 )

- Series arrangement 1790 2700 3150 3530 4920 5350 6925 )

Main dimensions in drawing (mm)

6 Horizontal double break disconnector | Product brochure

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

Product brochure | Horizontal double break disconnector 3

Maximum reliability and minimal maintenance

Minimized contact resistance (energy efficient solution)The current carrying aluminum conductors have no joints to minimize circuit resistance

No external springs in contact fingers for maximum reliability The contact fingers of the moving contacts of disconnector type eDB are designed from special conducting material and without external springs for increased reliability

Easy and quick erection The current carrying conductors and rotary pedestals are designed for easy adjusting and alignment

Low friction design for smooth operation Maintenance-free linkages with stainless steel rod-end bearings require less drive power for operation and provide smooth motion transmission without any disturbance in the settings (Corrosion ndash free electrical and mechanical joints)

Dead center interlocking for reliability under extreme conditions The dead center interlocking of operating mechanisms ensure that there are no inadvertent changes in the open or close switching position even under extreme external conditions such as storms earthquakes etc

Superior design of mechanical interlock The mechanical interlock between the earthing switch and main blade is designed in a way such that there is no scope for malfunction

Ice breaking capacity The disconnectors are capable of operating under severe ice conditions

Strong rotary pedestals This ensures that the deflection remains unchanged at high mechanical loads

Suitable for wide range of environmental conditions The disconnectors can operate in a wide range of temperatures as well as under polluted environmental conditions

Minimal maintenance Superior material and lubricant used in the encapsulation of the pedestals makes the disconnectors practically maintenance-free

Design based on cutting-edge technology and experienceThe horizontal double break disconnectors type eDB consist of a steel base frame with one rotary pedestal insulators current carrying conductors (current path) and driving mechanisms Steel components are hot dip galvanized to protect against atmospheric influences Each of the three phases of the disconnector consists of one insulator mounted on maintenance free sealed rotary pedestal and two support insulators which support terminal pads and fixed contacts which are carried by the steel base frame The current transfer takes place between two stationary terminal pads When closed the contact fingers glides over the fixed contact which establishes connection between the high- voltage terminal pads Flat terminal plates can be provided as per DIN standard 46203 NEMA or any other standards

Fixed contact and terminal pad of 1600 A eDB

Technical data

Technical Data Voltage 725 kV 123 kV 145 kV 170 kV 245 kV 300 kV 362 kV 420 kV

Type designation eDB725 eDB123 eDB145 eDB170 eDB245 eDB300 eDB362 eDB420

Rated voltage (Ur) kV 725 123 145 170 245 300 362 420

Rated frequency (fr) Hz 5060

Rated normal current (Ir) A 1600 2500

Rated short-time withstand

current rated duration of short

circuit (Iktk)

kA s

405063 1

Rated peak withstand

current (Ip)

kAp

25x Ik (for 50 Hz) 26x Ik (for 60 Hz)

Basic Insulation Level

Power frequency withstand

voltage for 1 minute

To earth and between poles

Across the isolating distance

Lightning impulse withstand

voltage

To earth and between poles

Across the isolating distance

Switching impulse withstand

voltage

To earth and between poles

Across the isolating distance

kV

kV

kVp

kVp

kVp

kVp

140

160

325

375

-

-

230

265

550

650

-

-

275

315

650

750

-

-

325

375

750

860

-

-

460

530

1050

1200

-

-

395

435

1050

1050(+170)

850

700(+245)

450

520

1175

1175(+205)

950

800(+295)

520

610

1425

1425(+240)

1050

900(+345)

36 kV on demand

Higher currents on request

3s for 40 kA

4 Horizontal double break disconnector | Product brochure

145 kV eDB disconnector

Mode of operation

The disconnector and earthing switch are operated via independent operating mechanisms

The operating energy from the operating mechanism of the disconnector is transmitted via operating rod to the rotary pedestal The three phases of the disconnector are connected by gang operating linkages for three phase operation During opening and closing operation the current path mounted on rotory insulator rotate through an angle of approximately 76deg

Operating mechanism All disconnectors can be supplied by manual or motor operated mechanism as required by the customer Each three-pole disconnector or earthing switch group requires only one individual operating mechanism(s) The coupling rods between the individual poles can be continuously adapted

Operating mechanisms contain auxiliary switches for control and signaling as well as provisions for electrical interlocks Three phase operation is conducted via mechanical or electrical gang operation

For maximum reliability the main contacts of the disconnector and earthing switch pass through the dead center positions shortly before they reach the end positions This prevents accidental opening or closing of the units due to external influences (eg short-circuits storm earthquake)

Linkages with spherical bearings

Bearing on frame assembly

InterlocksThe disconnector and earthing switch (when supplied) are mechanically interlocked In operating mechanisms a blocking magnet can be installed as an additional interlocking facility which in disconnected condition makes operation of the operating mechanism impossible

Earthing switch unit The earthing switch unit an optional assembly consists of a hinged-type earthing switch fixed at the base frame The unit can be mounted on either of the contact sides or on both sides as required

In case of the earthing switch the operating energy is transmitted to the earthing switch shaft The tubular contact arm switngs upward when the unit is closing

Product brochure | Horizontal double break disconnector 5

Easy installation

The disconnectors are delivered in following assemblies - lower part with rotary pedestals and operating rod current path support insulators and operating mechanism As all mechanical adjustments are carried out in the factory only mounting of the assemblies installation of the coupling rods between the poles connection of the high-tension leads and

the electrical connection leading to the operating mechanisms is required at the site

Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position caused due to tensile forces

Parallel installation

Series installation

A

D

B

E

C

70deg

PminPmin

Pmin Pmin

70deg

Dimensions Voltage (kV)

Type

725

eDB725

123

eDB123

145

eDB145

170

eDB170

245

eDB245

300

eDB300

362

eDB362

420

eDB420

A Support insulator distance (mm) 1230 1720 1720 2200 2800 2800 4800 4800

B Base frame length (mm) 1510 2000 2000 2600 3200 3200 5230 5230

C Insulator height (mm) 770 1220 1500 1700 2300 2300 3650 3650

D Disconnector height (mm) 975 1665 1745 1930 2550 2550 3960 3960

E Earth switch attachment length (mm) 375 max 375 max 375 max 400 max 400 max 400 max 450 1100

P Minimum distance between poles

(mm)

- Parallel arrangement 1270 1750 1750 2330 3520 3430 4755 )

- Series arrangement 1790 2700 3150 3530 4920 5350 6925 )

Main dimensions in drawing (mm)

6 Horizontal double break disconnector | Product brochure

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

Technical data

Technical Data Voltage 725 kV 123 kV 145 kV 170 kV 245 kV 300 kV 362 kV 420 kV

Type designation eDB725 eDB123 eDB145 eDB170 eDB245 eDB300 eDB362 eDB420

Rated voltage (Ur) kV 725 123 145 170 245 300 362 420

Rated frequency (fr) Hz 5060

Rated normal current (Ir) A 1600 2500

Rated short-time withstand

current rated duration of short

circuit (Iktk)

kA s

405063 1

Rated peak withstand

current (Ip)

kAp

25x Ik (for 50 Hz) 26x Ik (for 60 Hz)

Basic Insulation Level

Power frequency withstand

voltage for 1 minute

To earth and between poles

Across the isolating distance

Lightning impulse withstand

voltage

To earth and between poles

Across the isolating distance

Switching impulse withstand

voltage

To earth and between poles

Across the isolating distance

kV

kV

kVp

kVp

kVp

kVp

140

160

325

375

-

-

230

265

550

650

-

-

275

315

650

750

-

-

325

375

750

860

-

-

460

530

1050

1200

-

-

395

435

1050

1050(+170)

850

700(+245)

450

520

1175

1175(+205)

950

800(+295)

520

610

1425

1425(+240)

1050

900(+345)

36 kV on demand

Higher currents on request

3s for 40 kA

4 Horizontal double break disconnector | Product brochure

145 kV eDB disconnector

Mode of operation

The disconnector and earthing switch are operated via independent operating mechanisms

The operating energy from the operating mechanism of the disconnector is transmitted via operating rod to the rotary pedestal The three phases of the disconnector are connected by gang operating linkages for three phase operation During opening and closing operation the current path mounted on rotory insulator rotate through an angle of approximately 76deg

Operating mechanism All disconnectors can be supplied by manual or motor operated mechanism as required by the customer Each three-pole disconnector or earthing switch group requires only one individual operating mechanism(s) The coupling rods between the individual poles can be continuously adapted

Operating mechanisms contain auxiliary switches for control and signaling as well as provisions for electrical interlocks Three phase operation is conducted via mechanical or electrical gang operation

For maximum reliability the main contacts of the disconnector and earthing switch pass through the dead center positions shortly before they reach the end positions This prevents accidental opening or closing of the units due to external influences (eg short-circuits storm earthquake)

Linkages with spherical bearings

Bearing on frame assembly

InterlocksThe disconnector and earthing switch (when supplied) are mechanically interlocked In operating mechanisms a blocking magnet can be installed as an additional interlocking facility which in disconnected condition makes operation of the operating mechanism impossible

Earthing switch unit The earthing switch unit an optional assembly consists of a hinged-type earthing switch fixed at the base frame The unit can be mounted on either of the contact sides or on both sides as required

In case of the earthing switch the operating energy is transmitted to the earthing switch shaft The tubular contact arm switngs upward when the unit is closing

Product brochure | Horizontal double break disconnector 5

Easy installation

The disconnectors are delivered in following assemblies - lower part with rotary pedestals and operating rod current path support insulators and operating mechanism As all mechanical adjustments are carried out in the factory only mounting of the assemblies installation of the coupling rods between the poles connection of the high-tension leads and

the electrical connection leading to the operating mechanisms is required at the site

Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position caused due to tensile forces

Parallel installation

Series installation

A

D

B

E

C

70deg

PminPmin

Pmin Pmin

70deg

Dimensions Voltage (kV)

Type

725

eDB725

123

eDB123

145

eDB145

170

eDB170

245

eDB245

300

eDB300

362

eDB362

420

eDB420

A Support insulator distance (mm) 1230 1720 1720 2200 2800 2800 4800 4800

B Base frame length (mm) 1510 2000 2000 2600 3200 3200 5230 5230

C Insulator height (mm) 770 1220 1500 1700 2300 2300 3650 3650

D Disconnector height (mm) 975 1665 1745 1930 2550 2550 3960 3960

E Earth switch attachment length (mm) 375 max 375 max 375 max 400 max 400 max 400 max 450 1100

P Minimum distance between poles

(mm)

- Parallel arrangement 1270 1750 1750 2330 3520 3430 4755 )

- Series arrangement 1790 2700 3150 3530 4920 5350 6925 )

Main dimensions in drawing (mm)

6 Horizontal double break disconnector | Product brochure

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

Mode of operation

The disconnector and earthing switch are operated via independent operating mechanisms

The operating energy from the operating mechanism of the disconnector is transmitted via operating rod to the rotary pedestal The three phases of the disconnector are connected by gang operating linkages for three phase operation During opening and closing operation the current path mounted on rotory insulator rotate through an angle of approximately 76deg

Operating mechanism All disconnectors can be supplied by manual or motor operated mechanism as required by the customer Each three-pole disconnector or earthing switch group requires only one individual operating mechanism(s) The coupling rods between the individual poles can be continuously adapted

Operating mechanisms contain auxiliary switches for control and signaling as well as provisions for electrical interlocks Three phase operation is conducted via mechanical or electrical gang operation

For maximum reliability the main contacts of the disconnector and earthing switch pass through the dead center positions shortly before they reach the end positions This prevents accidental opening or closing of the units due to external influences (eg short-circuits storm earthquake)

Linkages with spherical bearings

Bearing on frame assembly

InterlocksThe disconnector and earthing switch (when supplied) are mechanically interlocked In operating mechanisms a blocking magnet can be installed as an additional interlocking facility which in disconnected condition makes operation of the operating mechanism impossible

Earthing switch unit The earthing switch unit an optional assembly consists of a hinged-type earthing switch fixed at the base frame The unit can be mounted on either of the contact sides or on both sides as required

In case of the earthing switch the operating energy is transmitted to the earthing switch shaft The tubular contact arm switngs upward when the unit is closing

Product brochure | Horizontal double break disconnector 5

Easy installation

The disconnectors are delivered in following assemblies - lower part with rotary pedestals and operating rod current path support insulators and operating mechanism As all mechanical adjustments are carried out in the factory only mounting of the assemblies installation of the coupling rods between the poles connection of the high-tension leads and

the electrical connection leading to the operating mechanisms is required at the site

Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position caused due to tensile forces

Parallel installation

Series installation

A

D

B

E

C

70deg

PminPmin

Pmin Pmin

70deg

Dimensions Voltage (kV)

Type

725

eDB725

123

eDB123

145

eDB145

170

eDB170

245

eDB245

300

eDB300

362

eDB362

420

eDB420

A Support insulator distance (mm) 1230 1720 1720 2200 2800 2800 4800 4800

B Base frame length (mm) 1510 2000 2000 2600 3200 3200 5230 5230

C Insulator height (mm) 770 1220 1500 1700 2300 2300 3650 3650

D Disconnector height (mm) 975 1665 1745 1930 2550 2550 3960 3960

E Earth switch attachment length (mm) 375 max 375 max 375 max 400 max 400 max 400 max 450 1100

P Minimum distance between poles

(mm)

- Parallel arrangement 1270 1750 1750 2330 3520 3430 4755 )

- Series arrangement 1790 2700 3150 3530 4920 5350 6925 )

Main dimensions in drawing (mm)

6 Horizontal double break disconnector | Product brochure

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

Easy installation

The disconnectors are delivered in following assemblies - lower part with rotary pedestals and operating rod current path support insulators and operating mechanism As all mechanical adjustments are carried out in the factory only mounting of the assemblies installation of the coupling rods between the poles connection of the high-tension leads and

the electrical connection leading to the operating mechanisms is required at the site

Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position caused due to tensile forces

Parallel installation

Series installation

A

D

B

E

C

70deg

PminPmin

Pmin Pmin

70deg

Dimensions Voltage (kV)

Type

725

eDB725

123

eDB123

145

eDB145

170

eDB170

245

eDB245

300

eDB300

362

eDB362

420

eDB420

A Support insulator distance (mm) 1230 1720 1720 2200 2800 2800 4800 4800

B Base frame length (mm) 1510 2000 2000 2600 3200 3200 5230 5230

C Insulator height (mm) 770 1220 1500 1700 2300 2300 3650 3650

D Disconnector height (mm) 975 1665 1745 1930 2550 2550 3960 3960

E Earth switch attachment length (mm) 375 max 375 max 375 max 400 max 400 max 400 max 450 1100

P Minimum distance between poles

(mm)

- Parallel arrangement 1270 1750 1750 2330 3520 3430 4755 )

- Series arrangement 1790 2700 3150 3530 4920 5350 6925 )

Main dimensions in drawing (mm)

6 Horizontal double break disconnector | Product brochure

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

Notes

Product brochure | Horizontal double break disconnector 7

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage

Contact us

Pub

lic1048991o

n1H

YD

8000

04-0

01copy

Cop

yrig

ht 2

012

AB

B

All

right

s re

serv

edNote ABB Ltd is working continuously to

improve the products We therefore reserve the right to change designs dimensions and data without prior notice

ABB India LimitedHigh Voltage products Maneja Vadodara 390 013 India Phone +91-265-2638930 Email pt-exportsinabbinabbcom

wwwabbcomhighvoltage