C O M P O N E N T S
AC Vacuum Circuit-Breaker
type BVAC
for electrical traction vehicles
General
The Sécheron type BVAC circuit-breaker is a roof mounted way
applications. It is equipped with a vacuum switch tube, pneumatic
closing, electromagnetic holding and opening through spring induced
force.
The BVAC is used as the main line breaker to switch ON and OFF the
traction power circuit, as well as to interrupt the overloads and shortcircuit currents.
It can replace the type DBTF air blast circuit-breaker without modification of the roof.
As an option, the BVAC can be equipped with an earthing switch type
BTE 15/25.04.
F
A
B
G
BVAC
BTE
D
C
A: towards pantograph
B: towards transformer
C: grounding circuit
D: earthing switch type BTE (option)
F: pantograph
G: transformer
Description
Vacuum Switch Tube (VST)
Main contacts
B
HV connection
HV connection
A
Insulating rod (T)
Earth
Vehicle's roof
Base frame
Pneumatic circuit
LV connector
Electro-valve (EV)
Piston (K)
Auxiliary contacts
Holding coil (M)
Operation
The operation of the BVAC breaker includes 3 steps.
Closing
(pneumatic)
The BVAC is closed by actuation of
the solenoid valve (EV).
Moved by the piston (K) and
the isolating rod (T), a mécanism closes the the mains contacts inside the vacuum switch
tube (VST) and prestress the
opening springs.
Holding
(electro-magnetic)
The pneumatic cylinder is
equipped with a holding electro-magnet (M), which holds the
BVAC in the closed position,
without air pressure.
Tripping
The opening of the BVAC is
caused by the prestressed
springs release, which occurs
when the holding current is cut
off.
Standard version ordering designation code
AC vacuum circuit-breaker
BVAC 1 0 1 0 0 V1 0
Rated operational voltage
17.5 kV:
30.0 kV:
Without:
BTE on right side:
BTE on left side:
24 V DC:
36 V DC:
48 V DC:
72 V DC:
110 V DC:
Without:
Sicem 35 poles:
Standard:
5 switches:
Connections for earthing switch type BTE
Nominal control voltage
Lightning arrester
Low voltage connector
Control circuit
Auxiliary contacts
1
2
0
3
4
1
2
3
4
5
0
0
V1
0
The order acknowledgement codification differs from the ordering one.
Note: when ordering spare BVAC version delivered before March 2006, provide Sécheron with the part
number of the delivered product.
Technical data
Main Circuit
Rated operational voltage
Rated insulation voltage
Rated power frequency withstand voltage
Rated impulse withstand voltage
Rated operational current
Conventional free air thermal current
Rated operational frequency
Frequency of operation
Rated short-circuit making capacity
Rated short-circuit breaking capacity
Rated short time withstand current
Opening time
Outdoor pollution degree
Indoor pollution degree
Auxiliary Circuit
Nominal voltage
Maximum closing power (Dt EV = ~0.6 s)
Nominal holding power*
Number of auxiliary contacts
Air pressure
Air supply pipe diameter
Ambient temperature
Weight
Symbol
Unit
BVAC 1...
BVAC 2...
Ue
Ui
U 50
U imp
Ie
I th
f
V
V
kVrms
kV
A
A
Hz
I cw
Dt o
kA
kArms/%
kA
ms
17’500
17’500
45
95
1000
1000
16 2/3
C3
62.5
25/50
25 / 1s
20..60
PD4
PD3
30’000
30’000
75
170
1000
1000
50/60
C3
50
20/50
25 / 1s
20..60
PD4
PD3
Un
(2)
Vdc
W
W
bar
°C
kg
24 / 36 / 48 / 72 / 110
50-200
50-200
15-50
15-50
5
5
4.5-10
4.5-10
G 3/8
G 3/8
-40..+70
-40..+70
120
135
Compliant to the standards IEC 60077-1/2/4, NF F16-101 grid 18 and NF F 16-102 level 1
The BVAC 2… is designed for a rated operational voltage of 30 kV, but can also be used for a rated operational voltage
of 17.5 kV with the same performances as the BVAC 1…
* Depending on the selected control voltage.
3
Options
BVAC 1 0 1 1 2 V2 1
Lightning arrester:
Low Voltage connector:
With
Sicem 31 poles
Harting 16 poles
compatible with all former BVAC versions
from 1 to 6 additional switches
Control circuit:
Auxiliary contacts
1
1
2
V2
1...6
Main dimensions
HV
M12
586
HV
M12
Ø 30
A
G 3/8"
142
480
870
15 kV : 490
25 kV : 560
15 kV : 339
25 kV : 409
B
200
65
230
71
62
43
15 kV : 439
25 kV : 509
2
C
320
Left
6 x Ø14
220
85
2 x Ø12
430
Roof opening
Back
Front
920
880
940
40
20
420
20
420
SG310272BEN_A02-1.06
A: connection for air supply
B: base frame level
C: space to remove the cover
Sécheron SA
Rue du Pré-Bouvier 25
1217 Meyrin - Geneva
CH-Switzerland
40
410
330
385
Right
6 x M12
30 x 45˚
Tel: +41 22 739 41 11
Fax: +41 22 739 48 11
info@secheron.com
www.secheron.com
This document is not contractual and contains information corresponding to the level of technology at the date of printing. Sécheron reserves the right to modify and/or improve
the product, whose characteristics are described in these documents, as required by new technology at any time. It is the purchaser's responsibility to inform himself, no matter
what the circumstances, of the product's maintenance conditions and requirements. Sécheron reserves all rights, especially those arising from our "General Delivery Conditions".
Copyright© 2007 Sécheron SA