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ENGLISH
ENGLISH
M
37.2
REV
.1-09/05
DIFFERENTIAL SWITCH
The differential switch or differential relay guarantee protection
against indirect contacts due to malfunction currents towards the
ground. When the device detects a malfunction current that is
higher than the nominal current or the set current, it intervenes
by cutting off power to the circuit connected.
In the case of an intervention by
the differential switch, check that
there are no sheathing defects
in the installation: connection
cables, sockets and plugs, utilities connected.
+
Before each work session, check the operation of the
differential protection device by pressing the test key. The
electricity-generating group must be in operation, and the lever
on the differential switch must be in the ON position.
THERMIC PROTECTION
Generally present to protect against overloads on an individual
power socket c.a.
When the nominal operating current has been exceeded, the
protection device intervenes by cutting off power to the socket.
The intervention of the protection device against overloads is
not instantaneous, but follows a current overload/time outline;
the greater the overload the less the intervention.
In case of an intervention, check that the current absorbed by the
load does not exceed the protection’s nominal operating current.
Allow the protection to cool off for a few minutes before resetting
by pressing the central pole.
ON
OFF
PRESS TO
RESET
USAGE WITH EAS AUTOMATIC START-UP PANEL
The electricity-generating group in combination with the EAS
automatic start-up panel forms a unit for distributing electrical
energy within a few seconds of a power failure from the
commercial electrical power line.
Below is some general operating information; refer to the
automatic panel’s specific manual for details on installation,
command, control and signalling operations.
Perform connections on the installation in safety conditions.
Position the automatic panel in RESET or LOCKED mode.
Carry out the first start-up in MANUAL mode.
Check that the generator’s LOCAL START / REMOTE
START switch (I6) is in the REMOTE position.
Check that the generator switches are enabled (input lever
in upward position).
Position the EAS panel in manual mode by pressing
MAN. key, and only after having checked that there are
no dangerous situations, press the START key to start the
electricity-generating group.
During the operation of the generator, all controls and signals
from both the automatic panel and group are enabled; it is
therefore possible to control its operation from both posi-
tions.
In case of an alarm with a shutdown of the motor (low
pressure, high temperature, etc.), the automatic panel will
indicate the malfunction that has caused the stoppage, while
the generator’s front panel will be disabled and will no longer
supply any information.
T5.4
T5.1
T5.3
T5.2
T5.10
T5.6
T5.7
T5.8
T5.9
TRIP
ON
TEST
RESET
0.25
2.5
2
0.5
1.5
1
0.02
0.1
0.2
0.5
0.3
0.4
RESET
I° (A)
t (s)
RESET
A
M
tx10
tx1
x1
x10
x0.1I°
I°
x10
tx10
x1
I°
M
tx1
x0.1I°
A
1 c 0
1 d 0
1 b 0
1 a 0
T5.5
ATTENTION
Do not keep the central pole on the thermic protection
forcefully pressed to prevent its intervention.
!
UsE As gEnErAtor
25
