Linz electric E1X Serie Instrucciones Para El Uso Y Mantenimiento página 27

8. SINGLE PHASE DUTY OF THREE-PHASE AL-
TERNATORS
The output power in single-phase in
continuous duty is approximately 65% of
three-phase output power in case of line-to-
line voltage and 40% in case of phase voltage (star
connection).
9. GENERAL NOTE
Operation in particular settings
If the alternator is going to be used within a sound-
proof generating set, make sure that only fresh air
enters it.
This can be ensured by placing the alternator's air
inlet near the external air intake. Moreover, remem-
ber that the quantity of air required is 10 m
Bearings
The bearings of E1X alternators are self lubrificated
and therefore they do not require mainteniances for
a period of more than 5000 hours. When it is
necessary to proceed to the general overhaul of the
generating set it is advisable to wash the bearing
with a proper, to remove and to replace the grease
reserve. It is Possible to use: AGIP GR MW3 -
SHELL ALVANIA 3 - MOBIL OIL MOBILUXGREASE
3or an other equivalent grease.
Types of bearings:
Drive end side: 6208-2Z-C3
Non drive end side: 6305-2Z-C3
Diode bridge
Normally it comes used the diode bridge for 25A -
800V.
Checkout diode bridge
The checkout of single diode valves of
rectifier bridge can be executed either with
an ohmmeter or with a battery and relative lamp as
described here below. A diode valve works regularly
when:
- the resistance, calculated with an ohmmeter, is
very low in one sense and very high in the other.
- with battery and lamp, it is verified that the
ignition of the lamp is possible only with one of
the two available connections, as shown below:
3 /min.
LAMP
LAMP
- 27 -
Three-phase rotating diode-bridge
Rotor
exciter
OFF
Single-phase fixed diode-bridge
ON
Varistor
+ -
Rotor
~
+