MOSA Weld TS 400 YS, Руководство по эксплуатации и обслуживанию

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20/07/16 M37 (TS) EN
ENGLISH
ENGLISH
ELECTRIC PROTECTIONS
THERMAL-MAGNETIC SWITCH
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NOTE : for some types of alternators (asynchronous alter-
nators) it is not necessary to protect the three-phase output
against short circuits and overcurrents, as the asynchronous
alternator self-protects itself.
The electricity-generating group is
protected against short-circuits and
against overloads by a thermal-magnetic
switch (Z2) situated upstream from the
installation. Operating currents, both
thermic and magnetic, can be fixed
or adjustable in relation to the switch
model.
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In models with adjustable operating
current do not modify the settings, since doing so can com-
promise the installation’s protection or the electricity-generating
group’s output characteristics. For eventual variations, contact
our Technical Service De-
partment.
The intervention of the protection
feature against overloads is not
instantaneous, but follows a
current overload/time outline;
the greater the overload the less
the intervention. Furthermore, keep in mind that the nominal
operating current refers to an operating temperature of 30°C, so
that each variation of 10°C roughly corresponds to a variation
of 5% on the value of nominal current.
In case of an intervention on the part of the thermal magnetic
protection device, check that the total absorption does not
exceed the electricity-generating group’s nominal current.
M
37.1
REV
.0-07/16
UsE As gEnErAtor
EngInE DrIVEn WELDErs
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.
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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.
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
ON OFF
PRESS TO
RESET
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.
SIMULTANEOUS USE
The welder’s alternator permits the simultaneous use of auxi-
liary power and welding current. The auxiliary power available
to the AC plugs (15) diminishes as the welding current drawn
increases.
The table on page M52 TECHNICAL SPECIFICATIONS shows
the amount of auxiliary power available as the welding current
varies.
COMBINED USE
The output available from the various auxiliary power sockets
is limited, not only by the declared output of the unit but also
by the capacity of each individual socket.
ATTENTION
Do not keep the central pole on the thermic protection force-
fully pressed to prevent its intervention.
!
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