Cutout Fuses - Belarus 3522.5 Operator's Manual

2.17 Cutout fuses

Cutout fuses are intended for protection of electrical lines against overloads and
short circuit.
In the electrical line from the manual disconnect switch of the accumulator battery to
the button switching the AB off there is a pendant 15 A fuse. In case this fuse is out of or-
der it is possible to turn the AB on/off only with the manual switch.
In the electrical line from the accumulator battery to the engine control systems
(EDC and SCR) two pendant 30A fuses are located (positioned in parallel).
Installation of fuses, located in the engine compartment, is presented in figure
2.17.1.
1 – fuse block; 2, 3 – 80 A fuse of inlet air heater (IAH) powering and accumulator
battery charging circuit; 4 – 80 A fuse of the switching unit powering; 5 – 60 A fuse of the
protection and switching unit (PASU) powering; 6 – 15 A fuse of front socket.
Figure 2.17.1 – Installation of fuses, located in the engine compartment
Besides, a supplementary 150 A fuse of inlet air heater powering is installed in the
electrical line from the alternator to IAH.
Assignment, places of location and ratings of fuses, included into the switching unit,
are given in subsection 2.18 "Switching unit".
Assignment, places of location and ratings of fuses, included into the protection and
switching unit, are given in subsection 2.19 "Protection and switching unit".
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