vacuum circuit breaker - sequin, c.a. - control y ... vcb(e).pdf · 33 ≤0.04 ≤0.04 ≤0.06...

CESI, KERI, CCC, ISO 9001, ISO 14001

Vacuum Circuit Breaker

2


General characteristics

General characteristics 3

Ratings 4

Constructional and 6operating characteristics

Control circuit diagram 8

External dimension (VCB) 9

External dimension (Cradle) 11

Accessories 14

Types designation and 19

ordering information

3

Comparison talbe for VCB(Breaking current)

Test(A, %×Breaking current) VCB class

IEC60056/62271-100

IEC62271-100

IEC62271-100

Breaking current(t)

E2(Main circuit replace impossibility)E1(Main circuit replace possibility)

310% 30% 60% 100% 100%

(List2)(sym) (asym) (List1)E2 E2

91536

72

104

116130

260268274

Pro-MEC

Wide range of accessories (optional) � Key Lock � Padlock of earthing switch

� Button padlock � Position switch of the earthing switch

� Button cover � Locking coil of earthing switch

� Position switch (Cell switch) � Shutter padlock

� Preparatory trip coil (Secondary trip coil) � MOC (Mechanically operated cell switch)

� Latch checking switch � TOC (Truck operated cell switch)

� Charge indicator � Code plate (Miss insertion prevention)

� Position padlock � Capacitor trip device

� Earthing switch � Rectifier

High reliability of the operating mechanism- Separate design of the main circuit from the

operating mechanism.

- Adopt the toggle link method.

- Improved the reliability of electric circuit.

- Adopt the rapid auto-reclosing method as a

standard option.

(O-0.3sec.-CO-3min.-CO)

High interrupting performance- Make short of the interrupting time. (3cycles)

- Increase the rated short-circuit withst and

characteristics. (1sec. to 3sec.)

Great operational safety- Reinforce the insulation in the conduct, by

adopting the molded housing in each phase.

- Built in the device making the contacts open

first when draw in and out.

- Adopt the tulip-shape connection between

the cradle and the VCB.

24 24

630 630

1250 1250

2000

50/60 50/60

12.5 25

520 1000

12.5 25

32.5 65

3 3

≤ 0.04 ≤ 0.04

≤ 0.06 ≤ 0.06

50 50

125 125

O-0.3s-CO-3min-CO O-0.3s-CO-3min-CO

M2 M2

E2 List1 E2 List1

C2 C2

20000 20000

30000 30000

20000 20000

30000 30000

4a4b, 10a10b 4a4b, 10a10b

Releasing, Fixed - Releasing, Fixed -

Releasing, Clip Hermetic, Tulip Releasing, Clip Hermetic, Tulip

Releasing, Clip Hermetic, Tulip Releasing, Clip Hermetic, Tulip

Releasing, Tulip Hermetic, Tulip Releasing, Tulip Hermetic, Tulip

- Hermetic, Tulip - Hermetic, Tulip

145 145 145 145

145 145 145 145

155 187 155187(630/1250A)

218 (2000A)

80 80 80 80

82 82 82 82

110 120 110 120

IEC 62271-100 IEC 62271-100

� �


Ratings

4

Rated voltage (kV)

Rated current (A)

Rated frequency (Hz)

Rated breaking current (kA)

Rated breaking capacity (MVA)

Rated short-time current (kA/3sec)

Rated closing current (kA)

Rated breaking time (Cycle)

Rated opening time (sec)

No-load closing time (sec)

Withstand voltagePower frequency (kV/1.2 X 50㎲㎲)

Impulse (kV/1.2 X 50㎲㎲)

Standard test duty

Mechanical

Class Electrical

Charge current breaking Note 1)

Mechanical(Time)

Lifetime(Time)

Electrical(Time)

(Time)

Auxiliary switch

Fixed type

Installing method Draw-out type

(kg)

VCB(kg)

(kg)Weight

(kg)

Cradle (kg)

(kg)

Applied standard

Test laboratory KERI

Without maintenance

Maintenance

Without maintenance

Maintenance

E-type

F-type

G-type Note 2)

M-type

E-type

F-type

G-type

E-type

F-type

G-type

▲ Fixed type VCB ▲ E-type cradle ▲ F-type cradle ▲ G-type cradle

LVB-20��-13D LVB-20��-13D/T LVB-20��-25D LVB-20��-25D/T

Note 1) Applied cable-charging breaking current2) G-Type releasing, tulip: manufactured G30, 1250A only

Type

5

VCB

ON

OFF

a contact s/w

ON

OFF

b contact s/w

OFF

ON

Motor

Closing Coil (C)The coil operated only when the power is appliedcontinuously over 45ms. It has built-in electrically anti-pumping circuit.

��Position of the Aux.contact switch

Note 1)Range of the normal operating voltage : 85~110%2) DC 24V is the underdeveloped rating.

Shunt coil (TC)When the VCB is 'ON' position, even though the controlpower of a shunt coil is 'OFF', the VCB maintains the 'ON'position.

Note 1)Range of the normal operating voltage : 70~110%2) DC 24V is the underdeveloped rating.

Auxiliary switch

Charging indicator ofthe closing coil

Indicating the condition of the closing spring.

Position indicator of the main contactsIndicating the 'Close' or the 'Open' of the main contacts.Close position : ��ON�� Open position : ��OFF��

Indicator of the contact wearIndicator of the contact wear of the Vacuum Interrupter. When it indicate '3', the user need to replace the VI.

CounterMechanically counts the switching of the VCB by 5digit analog type counter (Standard option)

Charged Discharged

Close position Open position

When the closing spring is charged, the control power of motor is turned off by the built-in limit s/w.

Note 1) Range of the normal operating voltage : 85~110%2) DC 24V is the underdeveloped rating.

Note) The contact capacity of the following accessories are the same with that of the Aux. switch. Position switch, Closing spring contact, Chargingcomplete indicating contact, Position switch of the earthing switch, Mechanically operated cell switch, Truck operated cell switch.

Standard 4a4b / Optional 10a10b

The peak value of the Rated current (A) Consumption Charging time

Rated voltage inrush current (A)power (W) (Sec.)

12.5kA 25kA 12.5kA 25kA

DC 24V 30 30 15 15 350 12

DC 110V 20 20 5 5 330 12

ClassificationGeneral Inductive Contact load (A) load (A) configuration

AC250V 10 5

125V 10 5

Contact Ratings 250V 10 5 4a4b 10a10b

DC 125V 10 5

30V 10 5

Rated voltageRated current (A)

12.5kA 25kA

DC 24V 10 10

DC 110V 2.5 2.5

Rated voltageRated current (A)

12.5kA 25kA

DC 24V 10 10

DC 110V 2.5 2.5


Constructional and operating characteristics

6

Manual chargeInsert the charge handle into the manual charge hole in thefront of a VCB, and rotate it to clockwise over 20times and thecharge complete with a metal sound.

Motor chargeIf you apply the control power to a VCB, the closing spring willbe charged automatically by a motor and then the controlpower will be turned off by the built-in limit s/w. Please use thesame control voltage for motor, Closing coil, Trip coil.

Sequence of the switching mechanism

Charging time of a closing spring 12secs.

Start closing Complete closing (Earthing switch“ON)Closing

Earthing switch“OFF” Earthing switch“ON”

Earthing switch“ON” Control power“ON”

Motor

Closing spring

Breaking spring

Closing coil

Tripping coil

Circuit

Closing time Breaking time

Complete breaking

Breaking start

Trip (Open)

Charging

Discharging

Charging

Discharging

On

Off

On

Off

On

Off

On

Off

①

②

③

④

⑤

⑥

⑦

⑧

⑨

⑩

⑪

⑫

①① Charge Indicator

of the closing coil

②② Close button

③③ Key lock (Optional)

④④ Trip button

⑤⑤ Manual charge hole

⑥⑥ Position indicator

of the main contacts

⑦⑦ Counter

⑧⑧ Draw-in and out

screw hole

⑨⑨ Rating label

⑩⑩ Indicator of the

contact abrasion

⑪⑪ Mounting hole

⑫⑫ Safety cover

7

Vacuum Interrupter (Breaking part of a VCB)

<The current flow and arc rotation in a spiral shape contact>

<Arcing and interruption phenomena of a Vacuum Interrupter>

Current path

Drivingforce onthe highcurrent ArcArc

(i) Weld(ii) Bridge explosion

(i) Contact jets(ii) Shield involvement

(i) Arc instability(ii) Interruption

Current zero

Recovery voltage

Voltage phenomena(i) Arc re-ignition(ii) Restrikes(iii) B.I.L(iv) A.C.voltage

withstand

Arc initiation High current arc mode

Fault current

Time (ms) Time (㎲)

The core part of a Vacuum Interrupter is the 'Contact'. The contact is strong against the withstandvoltage and has little contact wear rate, because it is made of the 'CuCr' material and it adoptthe spiral shape contact structure. With unique structure, the spiral shape contact lead the arc, drawn between the surfaces ofcontact, to rotate around the contact. So, it prevent the partial heating and strong against thecontact wear and the breaking time is short.

<Internal structure of a Vacuum Interrupter>

Moving electrode

Movable end plate

Bellows

CeramicMoving

contact

Fixing contact

Arc shield

End shield

Fixed end sealcup


Control circuit diagram

8

Not

e 2)

Not

e 2)

Not

e 1)

Not

e 1)

Not

e 4)

Not

e 4)

Not

e 3)

Not

e 3)

(Cha

rge

com

plet

e in

dica

ting

cont

act)

Trip

coi

l mon

itorin

g co

ntac

t C

ontr

ol c

ircui

t dia

gram

ф: E

xte

rna

l te

rmin

al o

f VC

B52

: V

ac

uu

m c

ircu

it b

rea

ker

M :

Sprin

g c

ha

rgin

g m

oto

rTC

: Tr

ip c

oil

TC1

: Se

co

nd

ary

Trip

co

ilC

: C

losin

g c

oil

Y : A

nti-

pu

mp

rela

y52

a :

Au

xilia

ry s

witc

h (

NO

)

52b

: A

uxi

liary

sw

itch

(N

C)

LS1

: Clo

sing

inte

rloc

k lim

it sw

itch

(o

nly

with

dra

wa

ble

typ

e)

LS2

: Mo

tor s

top

pin

g, c

losin

g s

prin

g c

ha

rge

d in

dic

atio

nLS

3 : A

nti-

clo

sing

, an

ti-p

um

pin

g li

mit

switc

hLC

S1 :

Op

en

ing

latc

h c

he

cki

ng

sw

itch

(pre

ven

ting

clo

sing

un

less

the

trip

latc

h is

pro

pe

rly re

set)

LS4,

LS5

: Po

sitio

n s

/w (

clo

se in

test

po

sitio

n)

LS6,

LS7

: Po

sitio

n s

/w (

clo

se in

run

po

sitio

n)

Con

trol

term

inal

con

figur

atio

n

3434

73 75

8372

56

747

837

826

5

368

7

8382

3736

61 7159

60 70

1 342

5811

12

27 2925

26 2824

2 4

1 31112

2726

2928

2524

45 47 49

4452

53

46 485654

5755

A6

10 23

A5

5352

9 22

A6

A5

10 23

9 22

C

41 43

B

40 42

38 505139

A

A2

A4

A1

A3

B

39 51

38 50

A

A2

A1

A4

A3

10a10b

4a4b

Not

e1)

LCS1

: La

tch

chec

king

switc

h

Not

e2)

Posit

ion

switc

h : 4

a (T

erm

inal

No.

: 1,

2, 3

, 4, 5

, 6, 7

, 8)

Not

e3)

TC1

: Sec

onda

ry tr

ip c

oil (

Prep

arat

ory

trip

coil T

erm

inal

No.

: 82

,83)

Not

e4)

In fi

xed

type

VC

B, L

S1 (C

losin

g-co

il lim

it sw

itch)

is n

ot a

vaila

ble.

※Ab

oue

circu

it di

agra

m is

bas

ed o

n ‘O

FF’ s

tatu

s of

VC

B. a

nd c

losin

g sp

ring

is ch

arge

d.

Opt

iona

l acc

esso

ries

9

External dimension (VCB)

630A 1250A 2000A2-ф14

40 20 40 25 40 25

807040 4040

4-ф14 4-ф14

760

800 562

362 86

83 179300

380

785

340

700

265265

10: 6

30,1

250A

20: 2

000A

4-ф13 Mounting hole

700

265 265

362

62241

663

805

340

400

146

739 (E class)

800 (F class)

805

340

400

480

59441635

LVB-20P-13D, 25D (Releasing, Fixed type) - 630/1250/2000A

LVB-20E, F-13D / (T), 25D / (T) E, F class - (630/1250/2000A)

��Front ��Side

<Clip contact> <Tulip contact>

<Terminal conductor>


(Unit : mm)


External dimension (VCB)

10

(Unit : mm)

LVB-20G-13D, 25D G class (Releasing, Tulip contact) - 630/1250A

LVB-20G-13D/T, 25D/T G class (Hermetic type, Tulip contact) - 630/1250/2000A



700

730 67041

305

193

805

400

340

89

820 711

265 265

2000A630/1250A

265 265

910

350 50

514

818

840

435

340

340

695

445 445

1000

1035

st: 260

285

A 340

1033

404.

5

T

Insulation barrier

B

22

1120

1167

12.5kA 630A 25kA 630A 12.5kA 1250A25kA 1250, 2000AInsulation barrier

62

20.5

67 4712

0

300

300

8517

7.5

120

100

8517

810

0

5050

2-ф14


ф6.5(Eartating)

2-ф14 4-ф14

40

660

260

110 400 400 210

168

2040 20

5025

0

265

265

145

820

40 20

ф6.5

40

40

10

46

30

11

External dimension (Cradle)

(Unit : mm)

LCL-20E-13D, 25D G class (Releasing, Clip contact) - 630/1250/2000A


��Top<Terminal conductor>

Rated A B T

630, 1250A 768 175.5 10

2000A 778 180.5 20

<Earthing terminal>

12



(Unit : mm)

LCL-20E-13D/T, 25D/T E class (Hermetic type, Tulip contact) - 630/1250/2000A


��Top

952

st: 260

265 265

947.5

1120

1167

22

404.

534

0A

T

B

1033

97.5

10

6750 90

90 100

202

80

300

300

100

45

8021

0.5

47

50

145

820

265

265

245

50

25

660

260168

400 400 210110

2-ф14 4-ф14 4-ф14

40 20 40 20 40 20

630A 1250A 2000A

40

20

40.5 42

ф6.512.5

22.5

30

Insulation barrier


ф6.5(Eartating)

Rated A B T

630, 1250A 768 175.5 10

2000A 778 180.5 20


<Earthing terminal>

13

(Unit : mm)

LCL-20F-13D, 25D F class (Releasing, Clip contact) - 630/1250/2000A


��Top

1000

1035

st: 260

285

A 340

1033

404.

5

T

Insulation barrier

B

22

1120

1167

12.5kA 630A 25kA 630A 12.5kA 1250A25kA 1250, 2000AInsulation barrier

62

20.5

67 4712

0

300

300

8517

7.5

120

100

8517

810

0

5050

2-ф14


ф6.5(Eartating)

2-ф14 4-ф14

40

660

260

110 400 400 210

168

2040 20

5025

0

265

265

145

820

40 20

ф6.5

40

40

10

46

30

Rated A B T

630, 1250A 768 175.5 10

2000A 778 180.5 20


<Earthing terminal>



14

(Unit : mm)

LCL-20F-13D/T, 25D/T F class (Hermetic type, Tulip contact) - 630/1250/2000A


��Top

1000

1035

st: 260

285

1120

1167

22

BA 34

040

4.5

1033

T

Insulation barrier

12.5kA 630A 1250A 2000A

660

168

820

265

265

145

40

210400400110

20

2-ф14 4-ф14 4-ф14

40 20 40 20

67 47 4510

080

100

202

300

300

9090

8021

0.5

50

20

5050

245

260 42

40.5

40

ф6.5 10

46

30

Insulation barrier


ф6.5(Eartating)

Rated A B T

630, 1250A 768 175.5 10

2000A 778 180.5 20


<Earthing terminal>

15

(Unit : mm)

LCL-20G-13D, 25D G class (Releasing, Tulip contact) - 630/1250A


��Top

265265

731

st:260

1033

340

404.

5

22

29.5

160

10

1027 231

820

1000

274

7-ф14 Mounting

hole

ф6.5(Eartating)

347.5400

25

2-M12 TAP(DP:20)

400110.5

660

260

265

103

820

265

A

VIEW "A"

7-ф14Mountinghole




16

(Unit : mm)

LCL-20G-13D/T, 25D/T G class (Hermetic type, Tulip contact) - 630/1250/2000A


RU

N

VIEW "A"

A

Test Run

960 1160(35)

246.

243

5.2

681.

4

1420

340

126

763 264

265

265

860

340

8317

60

26

26

920

25(2000A)10(630/1250A)

100


2-ф13

st: 310

VIEW "B"

B

763 327.4 327.4 1026

635

1726

5010

10

100

2-ф13

2000A630/1250A

��Top

��Earthing Switch


17

When it is locked by a key, the closing operation is notavailable (electrically and mechanically) without a Key.

Key lock

Button padlock protects ‘ ON’ or ‘Trip’ button when accidentis occured by operation at discretion.It is available to operate after release button padlock.

Button padlock

Button corer protects ‘ON’ of ‘Trip’ button when accidentis occured by operation at discretion. It is availabe tooperate by push bar.

Button cover

Indicating the position (Run or Test) of a VCB, bymechanically pressing the switch when a VCB changethe position. - RUN : 2a- TEST : 2a

Position switch (Cell switch)

<G class>

Optional accessories of the VCB

<Push bar>

2a(Test) 2a(Run)

Accessories

Note) In case of VCB is fixed on “TEST” or“RUN” position it will be transfer to “ b”contact.


Accessories

18

The main coil and the preparatory coil is connected inparallel. So even though there happens a fault in the tripcoil, the VCB can be tripped by one of the two trip coils.

Secondary coil (Preparatory trip coil)

Remotely indicates the charging is completed. (Standard Feature) - Terminal No. : 9, 10

Charge indicator

When the Latch is in abnormal position, the Latchchecking switch prevent the closing operation eventhough there is the 'Closing' signal.

Latch checking switch

The hole to prevent the draw-in and out of a VCB from thepresent position.('Run' or 'Test') Standard option in the interlock lever of the E, F classdraw-out type VCB. (Hole size = ф 8)

Position padlock

Optional accessories of the VCB

19

For the safety during the maintenance of a VCB panel,discharge the charging current in the load side of a VCBwith this earthing switch.

Earthing switch (for G class draw-out type only)

Indicates the 'ON' or 'OFF' status of the earthing switch.(5a5b)

Position switch of the earthing switch (for G class draw-out type only)

The hole to prevent the accident through carelessnessearthing switch operation, the locking of the earthingswitch is available when the switch is in 'OFF' position. (Holesize = ф 8)

Padlock of earthing switch (for G class draw-out type only)

To prevent the accident through carelessness earthingswitch operation, the earthing switch can be changed to'ON' position after releasing the lock by magnetizing thecoils.

Locking coil of earthing switch (for G class draw-out type only)

Optional accessories of a Cradle

<Earthing Switch Position Switch>

<Earthing Switch Locking Coil>


Accessories

20

To prevent the insert a VCB to a cradle, when the ratingsof VCB and cradle are different.

Code plate (Miss insertion prevention) -for E,F class draw-out type only

The hole to lock the shutters (load and line side) in closeposition, to increase the safety during the maintenance ofa VCB draw-out position. (Hole size = �8)

Shutter padlock -Standard offer in the draw-out type

The auxiliary switch (3a4b), which Indicate the 'ON' or 'OFF'condition of a VCB, but operated only when the VCB is in'Run' state. (Installed in the bottom of a cradle)

Mechanically operated cell switch (MOC)-for G class draw-out type only

The auxiliary switch (3a4b), which indicate the 'Run' stateof a VCB and is operated by the movement of a VCBframe. (Installed in the bottom of a cradle)

Truck operated cell switch (TOC) -for G class draw-out type only

Note) #11, 21 are Early “b” contact

Note) #11, 21 are Early “b” contact

Optional accessories of a Cradle

To prevent the insert draw-in/out handle to a screwhole by operating G class VCB temporarily

Padlock

21

��Dimension��Dimension

��Connection diagram��Connection circuit diagram

Standard tool

When the control power is off, the CTD supply the powerfor tripping a VCB.

Capacitor trip device (CTD)When the DC power is not available, rectify the AC powerand get the DC power for closing coil.

Rectifier

Optional accessories

Handle for charging the spring manually.(Standard feature)

Manual charging handleHandle for draw-in and out the VCB(Standard feature in the draw-out type)

Handle for draw-in and out

E, F class G class

Type VCB-T1 VCB-T2

Rated input voltage AC100/110V AC200/220V

Tripping time Within 30 Sec. after the AC power off

Voltage of the CTD DC100/110V DC200/220V

Type AC Input voltage Output current Rating time

VCB-X 1ф 100/110V

40A dc 10 sec.1ф 200/220V

5512411

80

145

52

250

165

22.5

22.5

20

90

2-ф35

Pilot Lamp

Mounting hole

8-ф7

25

3594

2010

090

150

2-ф72-ф20Mounting

hole

A5

A6

52a

Capacitor trip device

TC

22

Types and ordering information

Cradle

LLVVBB GG2200 1133 DD 0066 BB,, CC,, DD11AA 22BB

Note) ‘A’, ‘B’, ‘C’ is for ‘G’ class only

Note) In case 24kV, only both of 12.5kA and 25kA are available

Note) 7.2 kV VCB is under development.

Note) 7.2 kV VCB is under development.

LG VCB

Rated voltage

06 7.2kV

20 24kV

Installation method

P Fixed type

E E class draw-out type

F F class draw-out type

G G class draw-out type

MG class draw-out type+ Bushing

Revision No.

A General type

DPro-MEC

(Standard)

Control voltage

00 -

1A DC110V

1B DC220V

1C DC48V

1D DC24V

1E DC125V

Rated current

04 400A

06 630A

12 1250A

B 2000A

30 3150A

Breaking current

8 8kA

13 12.5kA

20 20kA

25 25kA

32 31.5kA

40 40kA

Breaking current

8 8kA

13 12.5kA

20 20kA

25 25kA

32 31.5kA

40 40kA

Auxiliary switch

00 -

2B 4a4b(AMP Jack)

2E 10a10b(AMP Jack)

2G 4a4b(Phoenix Jack)

2H 10a10b(Phoenix Jack)

Accessories

B Position Switch (RUN/TEST:2a2a)

C1 Button Padlock (ON)

C2 Button Padlock (OFF)

C3 Button Padlock (ON/OFF)

D1 Button Cover (ON)

D2 Button Cover (OFF)

D3 Button Cover (ON/OFF)

EButton padlock (ON)

+Button cover (OFF)

FButton padlock (OFF)

+Button cover (ON)

G Key Lock

HSecondary Trip Coil

(Preparatory trip coil)

K Opening Latch Checking Switch

N CTD(Capacitor Trip Device)

O Rectifier

P1 Dummy VCB(AMP Jack)

P2 Dummy VCB( Phenix Jack)

Q Earthing Truck(Lower)

R Earthing Truck(Upper)

S Pad Lock(G class)

T Close up, Tulip contact

LG VCB

Rated voltage

06 7.2kV

20 24kV

LLCCLL 2200 GG 1133 BB 0066 AA,, BB,, CC

Installation method

E E class draw-out type

F F class draw-out type

GG class draw-out type(Bushing)

Revision No.

A General type

DPro-MEC

(Standard)

Accessories

A MOC (3a4b)+ TOC (3a4b)

B Earthing Switch

CEarthing Switch Position Switch +Earthing Switch Locking coil

T Close up, Tulip contact

Note) In case 24kV, only both of 12.5kA and 25kA are available

Rated current

04 400A

06 630A

12 1250A

20 2000A

30 3150A

23

Memo

2003-07

ACB(A) 2001 / Jul. 2003 Printed in Korea STAFF

vacuum circuit breaker - sequin, c.a. - control y ... vcb(e).pdf · 33 ≤0.04 ≤0.04 ≤0.06...

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