User Manual

25/05/01 M39GB
PROTECTIONS EARTH LEAKAGE RELAY
M
39.11
REV.2-05/10
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.
EXCLUDING THE G.F.I.
it is possible to put off GFI supply so to be able to operate
in the control panel.
BEWARE: this operation is allowed only under the
responsibility of personnel able to activate different
solutions to ensure electrical protection of the system
powered by the gen-set.
USE OF THE DER3 / 0D MODEL (MOSA SET UP)
1) Manual reset
2) Regulation of intervention time: INST
(instantaneous)
3) Regulation of fault current: 30 mA
4) Output relay: N.De
The GFI is equipped with 2 tests, 1 of which is effected
automatically by the instrument:
1. manual test (trial push button)
2. automatic test of the toroid/relay connection and
of the release coil.
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
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
D 4
D 1
D 3
D 6
D 8
D 7
D 5
D 2
The setting modications of GFI are executed by qua-
lied personnel. In case, contact After Sales Support.
Before using the machine check the ON warning lamp
lighting.