Mosa GE 225 VPS, Инструкция по эксплуатации, Страница: 29 / 52

ENGINE PROTECTION USE EARTH LEAKAGE RELAY
M
39.11
© MOSA 1.1-10/05
Don not intervene on the setting of the protection
switch. Before using the machine check the ON warning
lamp lighting.
NOTE
!
The relay allows to select the tripping current value so as
to keep values of contact voltage of the limits indicated
by the electrical security norms.
These adjustments allow to perform a tripping selecticity
or either current or delay when more relays are located
along the same line in protection of the different starting
signals.
SW G.F.I.
The SW G.F.I. switch placed inside the electric control
panel - or inside the electric box - allows to exclude the
differential relay in case of need from the group to be
feeded.
WARNING : Have qualified personnel to exclude protection
in order to foresee other electrical safety solutions.
USE OF THE DER2 / D2B MODEL (MOSA SET UP)
1) Manual reset
2) Regulation of intervention time: 0.5 seconds
3) Regulation of fault current: 30 mA
4) Output relay: N.De or N.E. according to the model
of the machine .
☞
- In order to modify the set up call the Technical
Assistance Centres
The GFI is equipped with three tests, two of which are
effected automatically by the instrument.
1. manual test (trial push button)
2. automatic test of the toroid/relay connection (guard)
3. automatic test of the board electronics. In case of
fault the output relay trips and the Fault led lights
with fixed light.
It is able to work correctly even in presence of harmonic
distortion or anyway with very disturbed signals.
In case the internal temperature goes over the threshold
for a good functioning , the Fault led will twinkle.
Its interruption due to a fault of the toroid (break of the
connection wire) or a fault in the internal circuits brings to
the automatic intervention of the protection
To help the user in setting up the intervention delay, the
potentiometer t(s) rotation in correspondence of a reference
mark causes the Fault led to twinkle for a few seconds.
25/05/01 M39GB
LEGEND:
D1 Potentiometer for earthing fault current regulation
D2 Potentiometer for intervention time regulation
D3 Multifunction led for indication of: internal electronics
fault / internal temperature out of range/ t(s) centred
correctly.
D4 Led indicating presence of feeding
D5 Led indicating intervention of GFI relay
D6 Micro-switches for setting up of the instrument
D7 Trial push-button
D8 Push-button for the manual reset