Vetus P8 Guia De Inicio Rapido página 3

Switch panel P8
Introduction
Each separate circuit of the switch panel is protected with a
manually resetable electronic fuse. The circuits are rated for
maximum 10 A.
LED-lamps (light emitting diodes) indicate which circuit is ener-
gized.
The panel is suitable for both 12 Volt and 24 Volt electrical
installations.
Overload
In case of an overload condition the consumers of that circuit
will be switched off and the LED will go out.
After correcting the overload condition the affected circuit can
be reset as follows:
- put the switch into the OFF-position,
- wait approx. 20 seconds,
- switch back to the ON-position.
Installation
Mount the panel into a position that allows the user easy acces
to the switches and a good view at the LEDs. The back must be
accessible for installation!
Dimensions : 94 x 156 mm, depth behind fascia : 40 mm.
The splash-proof panel is intended for indoor use only.
Using the template provided, cut out an opening in the instru-
ment panel of bulkhead. Insert the four knurled head screws
into the fixing lugs and fit the unit into the panel, rotate the fix-
ing lugs to their extended position and tension the screws fin-
ger tight, see drawing 1.
High currents through wiring that is too thin, or resistance
caused by poor connections, can generate heat and could
cause a fire.
Connect both the positive (+) terminals and the negative (-) ter-
minal with the supplied wires see drawing 2.
Use wires with a sufficient cross-section to extend the supplied
wires:
- both the positive (+) wires, at least 4mm
- the negative (-) wire 2.5 mm
Connect the various equipment to be operated (consumers
such as lighting, pumps, etc.) with wires with a sufficient cross-
section; minimum 2.5 mm2 (14 AWG), see wiring diagram.
Cut the required name plates loose and attach them, see draw-
ing 3.
What is an 'electronic fuse'?
An electronic fuse is a resistor which has a Positive Temperature
Coefficient (PTC) of resistance. This resistor exhibits a change in
resistance with temperature which is not linear.
Within a certain narrow temperature range the electrical resistance
will jump sharply from a very small value to a very high value. In the
event of an overload condition in the system the electronic fuse will
reach switching temperature by self induced heating from the cur-
rent passing through it. At this point the electronic fuse switches to
its high resistance state and effectively blocks the flow of current. A
minimal amount of current will persist which holds the electronic
fuse in its high resistance state.
The electronic fuse has a responce similar to a 'slow-blow' fuse
type. This is very important for example, when starting an electro-
motor, which has a high inrush current for a very short period of
time.
To reset the fuse the circuit must switched off to cool down the fuse
(approx. 20 seconds) and after correcting the overload situation
switching back on again.
3
WARNING
2 (14 AWG).
ENGLISH
2 (12 AWG)
9.0504