KONČAR - MEDIUM VOLTAGE APPARATUS, Inc.
MEDIUM VOLTAGE VACUUM CIRCUIT BREAKERS
Series VK
FOR INDOOR INSTALLATION
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TRADITION
OWN DEVELOPMENT
QUALITY MANAGEMENT
ENVIRONMENT
PROTECTION
363 - VK K/E 11/2004
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MINIMAL DIMENSIONS
MINIMAL MAINTENANCE
RELIABILITY
MARKET ORIENTATION
1. GENERALLY
Vacuum compact circuit breaker series VK is third generation of medium voltage vacuum circuit breakers
manufactured in KONČAR - MEDIUM VOLTAGE APPARATUS, Inc.
Vacuum compact circuit breakers have been designed to meet requirements of domestic electric distribution
networks, and also fit well in industrial switchgear. The design of these series complies with current world trends in
medium voltage apparatus design and development.
2. DESIGN
Vacuum circuit breakers series VK are based upon latest generation of vacuum interrupters, distinguished by
minimal dimensions and masses.
Product range of series VK covers rated voltages up to 38 kV, rated breaking/making capacities up to 40/100 kA and
rated currents up to 3150.
Circuit breakers are designed as three-pole units, with vacuum interrupters built into insulating cylinders. The
complete line of circuit breakers is designed and type tested in accordance with IEC Norms (Pulication 62271-100).
According to construction diagrama (Fig. 1.), vacuum circuit breakers consist of the following assemblies:
A - Poles
B - Operating mechanism
C - Base
D - Transmission levers
P1, P2 - Terminals
1 - Insulating cylinder of epoxy
resin reinforced with glass-fiber
2 - vacuum interrupter
3 - fixed upper carrier
4 - moving contact
5 - flexible connection
6 - lower connection housing
7 - addition of moving contact of
vacuum interrupter
8 - insulating lever
9 - transmission lever
Fig. 1.
Constructional diagram of VK circuit breaker
Spring charging, energy storing operating mechanism type m5-VK is used at circuit breakers series VK.
Operating mechanism is mechanically trip-free, with possibility of energy surplus restitution. These features make
the operating mechanism extremely reliable and endurable.
Operating mechanism is equipped with motor drive, opening and closing releases, anti-pumping device, auxiliary
switch with 5NC and 5NO contacts, and 24-pin plug-in connector for connection of auxiliary circuits.
Other special fittings can be delivered on customer’s request (see Chapters 5, 6 and 7.)
2
4. SECONDARY CIRCUIT DIAGRAM
MAIN
MOTOR
CONTACTS
CLOSING
SPRING
STATUS
CLOSING
ANTI-PUMPING
DEVICE
TRIPPING AUTORECLOSURE
INTERLOCK
AT MANUAL
TRIPPING
INDIRECT
OVERCURRENT
RELEASE
(on request
only)
FREE CONTACTS
OF AUXILIARY SWITCH
UNDERVOLTAGE
RELEASE
(on request
only)
X1
S4
S3
*) On request
only
K
S1
3
P3
P6
3
6
P5
P1
3
S6
5
1
1
P7
P11
7
11
P4
P2
P9
P8
P10
4
2
9
8
10
M
K
Y1
Y3
Y2
K
I>
Y4
U<
X1
NOTE: Diagram shows circuit breaker in position “OFF” with closing spring charged.
List of equipment fitted on vacuum circuit breaker series VK:
Qty
1
Description/Application
2
U7030-130/125-L, “Gefeg” U7030-103-L, “Gefeg”
220 ~
110 ~
60=
48 =
=
=
2,1
4,2
7,6
9,5
190
225
190
180
13000
220
163
1
OI; OU "Končar"
48 =
110 ~
= 60 =
42
10
7
Description/Application
Identification and technical data
LIMIT SWITCH (S3,S4)
Type: KS; "Končar"
Un = 500V
In = 10A ~
=
RELEASE (Y1,Y2) / Closing; Tripping
Type
Un (V)
R (W)
1
Qty
MOTOR (M) / Closing spring charging
Type
Un (V)
In (A)
Pn (W; VA)
n (1/min.)
2
Identification and technical data
Un=440V=, 380V~
In=10A
INDIRECT OVERCURRENT RELEASE(Y3)
Protective tripping
Type
Oks; "Končar"
In (A)
1
0,5
Antipumping
SIGNALNA SKLOPKA
PAKETNA (S1)
Type: SRP 1118/99JK (11-polna) ili
SRP 1149/73KD (14-polna)
“Santon”
24 =
2
Motor stopping
Signalization of main
contact status
(position)
Rated current for ohmic and low-inductive loads:
16A at 250V= / 380V~
10A at 440V=
*) To be delivered on special request only
1
UNDERVOLTAGE RELEASE (Y4)
Type
Un (V)
Pn (W)
Pn (VA)
220 ~
=
1
Protective tripping
Okp "Končar"
110 ~
60 =
48 =
=
18
-27
Type: MS-324; "Metalfleks"
Un=250V~
In=10A
24 =
RELAY (K)
Type
Un (V)
Pn (W)
Pn (VA)
Closing interlock at
manual tripping
*) To be delivered on special request only
*) To be delivered on special request only
1
MICROSWITCH (S6)
1
Antipumping device
PR 41C "Iskra"
~ 110 ~
220 =
60 =
48 =
=
2,5
-2
24 =
4
PLUG-IN CONNECTOR (X1)
(24-pole plug and socket)
"Harting"
Access to control
circuits
5. DIMENSIONAL DRAWINGS
LEGEND:
7. Closing spring status indicator
8. Contact erosion indicator
9. Counter
10. Fixing points, openings φ 13
11. Multipole plug-in connector
12. Contacts
1. Name plate
2. Earthing screw, M12
3. Closing push-button
4. Opening push-button
5. Handle for manual spring charging
6. Contact status indicator
5.1. Dimensional drawing of types VK 12-25-8, VK 12-25-12 , VK24-16-8, VK24-16-12
a
80
15
375
Connection for 1250 A
12
50
192
M20
12
a
65
KONČAR
3
12
700
5
M20
525
4
12
7
310
VK
40
11
6
1
10
10
516
13
2
22
2
8
9
10
10
b
26
90
150
450
c
Dim. / Type
a (mm)
12
5
2
80
13
35
350
0
VK 12-25-8, VK 12-25-12 VK 24-16-8, VK 24-16-12
180
230
480
516
b (mm)
c (mm)
540
606
5.2. Dimensional drawing of types VK12-25-25, VK 12-40-12, VK 12-40-25, VK 17-25-31 SA, VK 24-25-25
a
a
150
400
15
340
VK
7
Connection
for 2500 A
Connection
for 1250 A
192
170
11
60
KONČAR
4
525
170
6
M12
50
5
25
835
3
0
2
35
13
50
2
22
13
25
1
8
9
70
2
400
40
10
10
10
60
90
40
10
516
17
555
150
26
125
b
Dim. / Type
a (mm)
VK 12-25-25
230
b (mm)
660
VK 12-40-12
230
660
VK 12-40-25 VK 17-25-31SA
275
275
750
5
750
VK 24-25-25
275
750
5.3. Dimensional drawing of type VK 17-25-31 SA
Connection
for 1250 A
60
210
112
210
400
15
25
12
40
192
M12
7
KONČAR
Φ 122
12
13
35
VK
3
792
22
13
5
70
340
11
40
4
17
525
6
M12
26
0
Connection
for 2500 A
Φ 98
400
1
8
9
2
10
516
55
10
10
235
555
30
30
40
445
25
50
620
50
M12
10
60
90
5.4. Dimensional drawing of types VK 24-25-8, VK 24-25-12
Connection
for 1250 A
112
400
15
65
40
230
12
50
230
12
192
12
M20
7
3
280
1
525
M20
6
0
Φ 98
2
8
9
22
745
4
70
2
10
516
10
10
150
540
600
450
6
5
10
13
13
12
5
2
Φ 122
KONČAR
35
VK
90
12
26
80
340
11
5.5. Dimensional drawing of type 38-16-8, VK 38-16-12
360
360
95
450
15
12
M20
450
Connection
for 1250 A
192
11
12
50
12
KONČAR
1000
3
M20
65
7
40
VK
5
6
12
525
4
500
0
2
13
2
22
13
80
8
9
35
1
2
10
10
516
545
10
200
880
12
40
10
26
155
525
5.6. Dimensional drawing of type VK 38-25-12, VK 38-25-25 VK 38-31-25
Connection for 1250 A
b
b
150
450
15
600
25
60
22
13
1200
11
17
VK
7
70
35
13
192
26
KONČAR
3
Connection for 2500 A
5
525
4
6
1
2
2
8
9
10
10
10
50
10
40
40
2
50
M12
500
0
25
516
555
175
Dim. / Type VK 38-25-12 VK 38-25-25 VK 38-31-25
360
a (mm)
400
400
b (mm)
125
60
90
a
920
1000
1000
7
5.7. Dimensional drawing of type VK 38-20-20 I
150.5
( 155 * )
450
∅ 90
(25**)
Connection
for 1250 A
26
25
112
VK
7
1097
1202
11
Φ1
4
600
26
26
36
KONČAR
3
Connection
for 2000 A
5
395
4
6
0
1075
2
35
2
2
105
2
50
2
8
9
2
φ12,4
4x
525
1
480
40
315
23
492
517
φ90
489
511
563
581
Fixing dimensions
* ** Contact for 1250 A
593
6. PLUG-IN CONNECTOR (Pos. 11 at dimensional drawings)
Lcv
1000
1000
Lcv
Lcv
Lcv
VK
VK
VK
VK
VK
a
b
c
d
e
a) Plug-in connector without wires
b) Plug-in connector with wires in flexible tube (right side of the connector)
c) Plug-in connector with wires in flexible tube (left side of the connector
d) Plug-in connector on flexible tube with wires
e) Flexible tube with wires without plug-in connector
NOTE:
a,b,c - Plug-in connector mounted on circuit breaker
d,e - Flexible tube with wires mounted on circuit breaker
Lenghts of flexible tube (Lcv): 600, 750, 800, 1050, 1250, 2000, 2500
8
200
(1000)
7. ORDERING DATA
INQUIRY FOR - VACUUM CIRCUIT BREAKER Series VK
(Fill or mark chosen data and return copy to the Manufacturer)
Customer/User:
Address:
Telephone:
Telefax:
e-mail:
Contact person:
Type designation:
Quantity:
1.
Rated voltage
kV
12; 24; 38
2.
Rated breaking capacity
kA
16; 25; _ _ _
3.
Rated current
A
800; 1250; 2500
4.
Rated voltage of the motor drive
V
220
; 110
; 220=; 110=; 60=; 48=; 24=
5.
Rated voltage of the opening/closing
release
V
220
; 110
; 220=; 110=; 60=; 48=; 24=
6.
Microswitch
7.
Undervoltage release
8.
Additional support (500 mm) for installation
in the fixed cells
On special request
9.
Plug-in connector (See Chapter 6.)
a; b; c; d; e
10.
Lenght of flexible tube (See Chapter 6.)
11.
Counter
12.
Note:
On special request
On special request
V
mm
(220
; 110
; 220=; 110=; 60=; 48=; 24=)
600; 750; 800; 1050; 1500; 2000; 2500
On special request
Type designation of vacuum circuit breaker series VK - Example:
VK
12
25
12
Basic designation of series
(vacuum compact circuit breaker)
Rated voltage (kV)
Rated breaking capacity (kA)
Rated current (A x 100)
Technical characteristics, dimensional drawings and other relevant data are subject to change.
Obligatory data only on request.
ELEKTROINDUSTRIJA d.d.
KONČAR - ELEKTRIČNI APARATI SREDNJEG NAPONA d.d.
Borongajska bb, HR - 10000 Zagreb; Hrvatska
Telephone: (+385) 1 233 48 67; Telefax: (+385 ) 1 233 10 58
e-mail: koncar-easn@zg.htnet.hr;
prodaja@koncar-easn.hr
Internet:www.croatiabiz.com/koncar-easn