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Short Form Catalogue
Arc-fault
Protection System
Protection of Switchboards
• Improve personnel safety.
• Minimize production down
time.
• Reduce damage to material
and the cost of repair or
replacement.
Arcing faults in switchboards can cause
severe damage against material as well as
personnel.
The main issue is that no two arcing are the
same, and it is therefore very difficult to
know in advance how to prevent them.
Whenever arcing occurs the pressure generated by the rapid increase in temperature
is strong enough to break off cabinet doors.
Further the light of the arcing, ultraviolet,
and infrared, is dangerous for personnel, eyes
and skin.
All of the above points should be taken into
consideration in the Total Cost of Ownership, TCO, of a switchboard, and by using
the SELCO Arc Detecting Relays you will be
able to reduce these costs and eliminate the
points listed.
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Arc-fault Protection System
The SELCO Arc-fault Protection System is based on experience
with arc protection since 1962. The system units are built into
boxes all fitting 35mm DIN-rails. Front plates are dimensioned
to fit into the 45mm slot in the cover plates of a DIN-system.
The Arc Detecting Relay is connected to light sensitive detectors suitably placed in the various cubicles or drawers inside the
switchboard. The Overcurrent Relay is used if overcurrent protection is required as well.
Arc Detecting Relay/
Current Relay/Time Relay
To be placed in the switchboard or in
connection with it. It is recommended
that the Arc Detecting Relay, the Current
Relay and the Time Relay are installed
in the relay box or otherwise separated
from the circuit breaker to
be tripped.
Junction box for parallel
connection
To be installed considering the length of
the detector cables (5 metres). Junction
boxes with indication are installed so
that the LED’s are fully visible. Max. 2
junction boxes per Arc Detecting Relay.
Arc Detectors
Installation: 1-2 pcs. per cubicle or drawer, see drawings on page 4.
At horizontal/vertical bus bars (1) and
in breaker/cable compartments (2).
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Arc-fault Protection
D0100 Arc Detecting Relay
for 24-220V DC battery supply
For use with:
· A0200
· A0300
· D0400
· D0500
· D0700
The D0100 is a detecting relay which can
monitor up to 16 arc detectors in parallel
through D0400 or D0500 Junction Boxes.
In case of an arcing fault, the relay generates a fast tripping pulse, less than
1msec., to the circuit breaker(s) supplying the installation. The arcing time is
thus reduced to the mechanical opening
time of the circuit breaker, The relay is
solid state with complete isolation between input and output. Thus the relay
and the circuit breaker may have different pilot voltages.
The TEST-position on the relay is used
to test the tripping without opening the
circuit breaker. The 2 free signal contacts
is for remote indication of arcing fault
trip and indication for absence of pilot
voltage - or for indication of the TESTfunction is activated.
The sensitivity to light is adjustable on
the front plate SENS.ADJ knob within
1-12mA. The range is 2.000-24.000lux
enabling you to use the sensors under
different light conditions, indoor light,
sunlight etc.
The preset is 6mA/12.000lux.
D0400 Junction Box
For use with:
· D0100
· D0900
· A0200
· A0300
The D0400 is for connection of up to 8
detectors in parallel without indication.
A0200/A0300 Detector
For use with:
· D0100
· D0900
· D0400
· D0500
The A0200/A0300 both reacts on light
and is available with 180º or 360º characteristic. To be installed in each cubicle/
drawer and should be shielded from
normal switching arcs. Detectors are
supplied with 5m, 10m or 15m of cable
and a mounting bracket.
D0900 Arc Detecting Relay
for AC supply
For use with:
· D0400
· A0200
· A0300
The D0900 is a detecting relay which can
monitor up to 16 arc detectors in parallel
through D0400 Junction Box.
In case of an arcing fault, the relay generates a fast tripping pulse, less than 1
mSec., to the circuit breaker(s) supplying the installation. The arcing time is
thus reduced to the mechanical opening
time of the circuit breaker, The relay is
solid state with complete isolation between input and output.
The relay has energy stored in a storage
capacitor charged with a DC voltage to
trip the circuit breaker.
The TEST-position on the relay is used
to test the tripping without opening the
circuit breaker. The 2 free signal contacts are for remote indication of arcing
fault trip and indication for absence of
pilot voltage - or for indication of the
TEST-function is activated. Both contacts
are activated after tripping as the relay
normally disconnects its own supply
voltage.
The sensitivity to light is adjustable on
the front plate SENS.ADJ knob within
1-12mA. The range is 2.000-24.000lux
enabling use of sensors under different
light conditions, indoor light, sunlight etc.
The preset is 6mA/12.000lux.
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Arc-fault Protection
D0500 Junction Box
with Indication
For use with:
· D0100
· A0200
· A0300
The D0500 is designed to connect up to
8 detectors in parallel and has a separate
indication of which detec-tor(s) caused
tripping by means of a red LED for
each detector. The red LED is lit when
the light intensity exceeds 6.000lux.
on the detector, but it turns off again if
the intensity goes below 6.000lux. At
12.000lux. the arc detecting relay is triggered, the active LED’s are latched and
a yellow LED (TRIP) is turned on. All
LED’s remain turned on until reset by
a common RESET button. Max. 2 boxes
per arc detecting relay is allowed
Connection Possibilities
D0700 Overcurrent Relay
For use with:
· D0100
The D0700 is a 3-phase current relay to
be used in combination with a DC arc
detecting relay. The current setting range
is 1.5-3.0 x In (7.5-15A). Each time the
set current is exceeded a red LED (TRIP)
turns on and an output relay activates.
The relay contact - normally closed opens and cancels the blocking of the arc
detecting relay making it able to trip the
supply breaker in the case of an arcing
fault. The function of the arc detecting
relay is thus made dependent on the
current at the time of the arcing fault.
However arcing time is increased.
A0200 Detector
A0300 Detector
D0100 Arc Detecting Relay DC
D0400 Junction Box
D0500
Junction Box w/Indication
D0700 Overcurrent Relay
D0900 Arc Detecting Relay AC
A0200
X
X
X
X
A0300
X
X
X
X
D0100
X
X
X
X
X
D0400
X
X
X
X
D0500
X
X
X
D0700
X
D0900
X
X
X
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A0200, 180 degrees
A0300, 360 degrees
Light intensity from
an arc current of min.
3kA detected inside
of the curves will trip
the breaker.
Specifications
SELCO Arc-fault Protection System
D0100 - Arc Detecting Relay DC
Voltage Supply: 24-220V DC from battery.
Triac output: 250V AC/DC, 8A cont. 25A/ 0.1sec.
Min. load current 50mA.
Signal contacts: 2 free/220V AC/DC 1A max. 50W.
Sensitivity: 1-12mA, pre-set trip 6mA/12000 lux.
Number of detectors: Max. 16 pcs.
Response time: Less than 1msec.
Power consumption: 4.3W.
Ambient temperature: -25 to +70º C.
D0500 - Junction Box with indication
Power consumption: 0.6W.
Ambient temperature: -25 to +70ºC.
D0700 - Overcurrent Relay
Voltage Supply: 48-220V DC from battery.
Current inputs: 3-phase 5A cont., 75A /1sec.
Burden: 0.5VA/input at 5A.
Current range: 1.5-3.0 x In (7.5-15A).
Response time: 20-30 mSec.
Power consumption: 2.6W.
Ambient temperature: -5 to +55ºC.
D0900 - Arc Detecting Relay AC
Voltage Supply: 220-250V AC.
Thyristor output with stored energy: Storage capacitor 66 µF charged to
300V DC. E=2.97Wsec. (Joule).
Life time min 30 years at 50°C.
Min. load current 50mA.
Charging time approx. 1 sec.
Discharge time approx. 1 min.
Trip coil: 230V AC.
Signal contacts: 2 free, 230V AC/DC 1A max.50W.
Sensitivity: 1-12mA, pre-set trip 6mA/12000 lux.
Number of detectors: Max. 16 pcs.
Response time: Less than 1 msec.
Power consumption: 3.5 W.
Ambient temperature: -25 to +70ºC.
Environment
EMC standards: EN50081-1/2 and EN50082-1/2.
Enclosure: IP31.
Dimensions
Item no. Dim. mm
B H D1 D2 D3 D4
D0100 105 90 75 70 60 49
D0900 105 90 75 70 60 49
D0400 72 90 — — 58 48
D0500 72 90 — 70 58 48
D0700 105 90 — — 60 49
D0800 72 90 75 70 58 48
The specifications are subject to change without notice.
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SELCO Worldwide
SELCO Denmark
SELCO Subsidiary
SELCO Representation and
area of supply
Main Office:
SELCO A/S
Betonvej 10
DK- 4000 Roskilde
Denmark
Phone: + 45 - 70 26 11 22
Fax: + 45 - 70 26 25 22
e-mail: selco.dk@selco.com
www.selco.com
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