User Manual

ManualsBrandsMosa Manuals250kVA and Above Three Phase Stationary Diesel Generators275kva Fiat/IVECO Three Phase Diesel Generator

07/05/01 M39_EN

ENGLISH

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 electri-

cal 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 distor-

tion 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 connec-

tion 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

39.11

ENGINE PROTECTION

EARTH LEAKAGE RELAY

REV.2-05/10

NOTE

THE SETTING MODIFICATIONS OF GFI ARE EXECUTED

BY QUALIFIED PERSONNEL. IN CASE, CONTACT AFTER

SALES SUPPORT.

BEFORE USING THE MACHINE CHECK THE ON WAR-

NING LAMP LIGHTING.