DC Circuit Breaker
ARC1200
TECHNICAL DESCRIPTION
© TRK5650515200
ABCD
Ed.1 of 21/02/13
CONTENTS
1. INTRODUCTION ........................... 2 2. DESCRIPTION .............................. 2 2.1 Description of ARC1200 circuit
breaker ........................................................ 2 2.2 Operating mode ................................... 2 2.3 Variants and Accessories ................... 3 3. INTEGRATION .............................. 4 4. CHARACTERISTICS .................... 5 4.1 Standards ............................................. 5 4.2 General features .................................. 5 4.3 Power circuit ........................................ 5 4.4 Breaking capacity ................................ 5 4.5 Control Circuit ..................................... 6 4.6 Auxiliary contacts................................ 6 5. DIMENSIONS ................................ 7 ABCD
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TRK5650515200 ed1
BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
1. INTRODUCTION
2. DESCRIPTION
The ARC 812 and ARC 1512 circuit breakers
are direct current unipolar devices with
a bi-directional over-current and trip free
release. These are electromagnetic control
devices.
2.1 Description of ARC1200 circuit
breaker
Products from 1200A ARC range
have a common general architecture and differ
by the size of the arc chute (function of the
operating voltage).
- the body (also called frame - 1) which is
common part of the range
ARC
15
The circuit breaker consists of two main part
assembly :
- the arc chute (2) with two main versions (for
750V and 1500V applications)
12
Nominal voltage (102 V)
Nominal current (102 A)
Fig.1.1 – Identification mode
Their compactness and ability to operate either
vertically or horizontally make the
ARC1200A circuit breakers particularly
adaptable to assembly in :
Electrical blocks or cases for rolling
stock (for horizontal mounting, it is
recommended to use horizontal fitting
option)
Shielded cases of the industrial type
cabinets for fixed installations.
The circuit breaker design leads to an easy
maintenance and high number of
operations. The main wearing parts may be
changed without completely dismantling the
circuit breaker.
Fig.2.1 – ARC812 circuit breaker (without options)
2.2 Operating mode
Mechanical operation
Closing
The energizing of the electromagnet causes
the movement of the main contacts and the
movable pole contact comes to the fixed pole
contact.
Opening by holding current cut off
Due to the effect of springs the breaking of
the holding current pull the moving pole
contact arm to the "open" position.
Opening by direct over-current release
When the current travelling through the
circuit breaker exceeds the release setting
threshold, the equilibrium is broken and the
movable pole contact arm is pulled back to the
"open" position by the effect of return spring.
ABCD
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TRK5650515200 ed1
BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
Electrical operation
During opening the electric arc develops
between the contacts and then, under the
effect of the magnetic field, progresses onto
the horns. The arc is forced to enter the arc
chute by thermodynamic and magnetic effects.
The arc chute consists of metal plates which
are intended to fraction the arc and to develop
the back-electromotive force required for its
extinction.
2.3 Variants and Accessories
Battery
voltage
Input voltage
Part number
24 V DC
16,8 V to 30 VDC
DTR0000078658
36 V DC
24 V to 44 VDC
DTR0000078659
48 V DC
33,6 V to 60 VDC
DTR0000078660
72 V DC
50,4 V to 90 VDC
DTR0000078661
110 V DC
77 V to 137,5 VDC
DTR0000078663
Variant 1 : Arc chute
The sizes of the 750V and 1500V arc chutes
are linked to the number of metal plates in the
arc chute.
Recommended accessory : Control panel
750V
1500V
Fig.2.4 – ARC1200 arc chutes
Fig.2.3 – ARC812 electronic control panel
Covers and lateral seals can be used in option
to reduce distances between arc chute and
metallic parts (either metallic walls or
components).
Its main functions are to provide a pulse
current to close the circuit breaker and hold the
circuit breaker closed with reduced current.
The main advantages are :
- energy calibration for closing (mechanical
shock limitation during closing for circuit
breaker) which leads to increase and control
life cycle cost of breaker.
- low power dissipation during holding with
regulated current (<30W)
- wide input battery voltage range condition
according to CEI 60077. Rated input voltage
from 16 to 140VDC
safe opening circuit is guaranteed with
double system to open current of the coil,
either power transistor and electromechanical
relay controlled separately.
Feedback signals are available for system
diagnostic as state of the output and state of
electromechanical relay.
ABCD
Lateral seals & Covers
Onix traction drive fitting
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BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
3. INTEGRATION
Variant 2 : Tripping range
The circuit breaker is equipped with an overcurrent release which is supplied directly by
the current in the main circuit of the device.
The tripping range is the range between the
minimum and maximum values within the
current setting of the over-current release can
be adjusted.
•
•
•
•
The integration of the DC circuit breaker inside
a cubicle is an important matter. Attention has
to be paid on volume of free air around the
product, evacuation of ionized gas and risk of
flashover to metal parts.
The position of the circuit breaker is also
important – see pictures 3.1 and 3.2.
The electronic panel shall be installed in such
a way to prevent any metallic projection from
the arc chute.
400 to 800 A
600 to 1200 A
1200 to 2500 A
1800 to 3600 A
Option : Overcurrent signalling contact
An over-current release signalling contact
indicates the state of the circuit breaker :
when contact is in close state, the circuit
breaker is open following an tripping event.
Fig.3.1 – Recommended assembly positions
Fig.3.2 – Forbidden assembly positions
ABCD
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BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
4.3 Power circuit
4. CHARACTERISTICS
Features
ARC812
ARC1512
Rated operational voltage (Ue)
750V
1500V
Rated insulation voltage (Ui)
900V
1800V
1000V
1950V
4.1 Standards
The ARC1200 HSCB is in compliance with:
-
IEC 60077-1-2-3: Railway applications – Electric
equipment for rolling stock
IEC 61373: Railway applications – Rolling stock
equipment – Shock and vibration tests.
IEC 60850: Railway applications – Supply voltages of
traction systems.
NFF 16101: Fire behaviour – Material choice.
NFF 16102: Fire behaviour – Material choice and
application for electric equipment.
EN 50123-1-2: Railway applications – Fixed
installations – D.C. switchgear
EN 50155 : Railway applications – Electronic
equipment used on rolling stock
Exceptional voltage
In accordance with
Line surges
IEC 60 850
Overvoltage category
OV3
Pollution degree
PD3
Dielectric strength between
poles (1mn / 50Hz)
3000V rms
4500V rms
Dielectric strength between HV
and ground/LV (1mn / 50Hz)
3875V rms
5750V rms
Rated thermal current
1200 A (at 55°C)
4.2 General features
3500A DC during 60s
Overload (from stabilized)
Features
Min
Max
Tu
-25°C
+70°C
Exceptional Operating
Temperature
/
-25°C
+85°C
Storage Temperature
Ts
-40°C
+70°C
Height
Alt
1400m
Humidity
%
95% at 70°C
Nominal Operating
Temperature
Bidirectional internal
overcurrent tripping
Overcurrent tripping device
4.4 Breaking capacity
ARC812
ARC1512
Maximum prospective current
(kA)
30
30
22
25
Prospective current (kA)
(O-40s-CO-40s-CO)
25
20
20
25
L/R (ms)
2
15
2
15
Features
Mechanical endurance
250 000 Cycles (at 25°C)
ARC812 : 29 kg
ARC1512 : 37 kg
Weight
Dimension (mm)
ARC812 : 487x397x150
ARC1512 : 487x532x150
HV connections
HV input and HV output :
∅12,5 hole on electrical
connection
LV connections
4000A DC during 15s
Burndy connector SMS18R1
(Souriau connector as option)
Shock and vibration
ABCD
Voltage (V)
900
1500
Values are given for circuit breaker in all
positions with covers and lateral seals.
IEC 61373 standard
Category 1, class B
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BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
4.5 Control Circuit
4.7 Wiring diagramm
Characteristics of the electronic control panel
1
HSCB Control panel
Designations
2
Voltage variants
From 24 V DC to 110 V DC
according to EN50155
3
4
Overvoltage protection
device
Yes
5
6
Insulation voltage
between LV contacts
and earth
1500 V
7
8
Opening time at Un by
holding current cut off
< 15ms
9
10
Minimum time between
2 closing
7s
11
12
Control Panel
Dimensions (mm)
115 x 295 x 160
13
Control Panel weight
Power
1.5 kg
14
5W when open
15
30W at holding
16
17
45W when closing during 7s
18
4.6 Auxiliary contacts
Designations
Typ.
Voltage (AC or DC)
Current
Min
Max
50 V
250 V
10 mA
2A
Fig.4.7 – Standard wiring
Breaking current
1 000 000 cycles under 1A,
90V, L/R=15ms
10 000 cycles under 1A ,
90V, L/R=40ms
Mechanical endurance
Insulation voltage
between auxiliary
contacts and earth
Sequence
10 000 000 Cycles
2500 V
4 NO + 4 NC
Fig.4.8 – Wiring variant with optional
overcurrent release signaling contact
ABCD
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TRK5650515200 ed1
BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
5. DIMENSIONS
ARC 812
ARC 1512
Without arc chute option
With covers
With lateral seals
With lateral seals & covers
Minimum distance to metal wall (mm)
A
B
C
200
120
210
200
120
110
60
120
210
60
10
110
Minimum distance to insulating wall (mm)
A
B
C
60
10
110
Note: Volume around circuit breaker is not function of distances indicated above. Mixed lines do not represent
minimum box volume.
Fig.5.1 – Dimensions 01
ABCD
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TRK5650515200 ed1
BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France
TECHNICAL DESCRIPTION
ARC1200
ARC812 Arc chute with covers
ARC1512 Arc chute with covers
Fig.5.2 – Dimensions 02
ABCD
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BP 4 - Rue du Docteur GUINIER - 65600 SEMEAC – France