Diesel Gen-set Operation Instructions
50
prohibited;
4) Air switch is in switching-off state.
6. Testing insulation resistance
1) Open outlet box cover plate of alternator to remove wiring on main stator
(armature) of alternator AVR, namely No.7 and No.8 wiring of AS440 and AS480 (for
SE350, remove No.3 and No.4 wiring);
2) Disconnect grounding conductors between all neutral wires and grounding wires;
3) Measure insulation resistance to ground of leading-out terminal U, V and W in turn
with a 500V mega-ohm meter or other similar instruments;
4) Measure insulation resistance to ground of excitation stator (magnetic field),
namely insulation resistance to ground of F1 and F2 wiring on AS440 and AS480 (for
SE350, measure insulation resistance to ground of F+ and F-);
5) The resistance value shall be greater than 5M
Ω
. If not, be sure to dry the coil by
referring to the drying method specified in Chapter 9.
7. Connecting negative battery cable
Connect negative battery cable to battery and protect it with insulation protection cap.
III. Commissioning of the Gen-set
1. Start capacity
Turn power switch
on control panel to “ON” position at first and the control
panel display module shall be able to display normally; stall controller operates to
turn stop handle to fuel supply position; observe battery voltage from display screen
and connect mains power to terminal block “L1” and “N1” of control panel if the
voltage is lower than 9V, in order to recharge the battery.
