Electric Cutout Fuses; General Information; Switching Unit And Fuses For Electrical Equipment - Belarus 922.6 Operator's Manual

Figure 2.20.2 - Distribution valve RP70-822.1 or RP70-822 outputs positioning and
connection diagram.
2.21 Cutout fuses

2.21.1 General information

Electric cutout fuses are intended for the protection of electrical lines against over-
loads and short circuit.
WARNING: TO AVOID BURNING OF TRACTOR WIRING NEVER USE FUSES
WITH CURRENT RATING HIGHER THAN RATINGs SPECIFIED IN THIS SECTION. IF A
FUSE OFTEN BURNS OUT, FIND OUT THE CAUSE AND ELIMINATE THE FAULT!

2.21.2 Switching unit and fuses for electrical equipment

Switching unit 3 (Figure 2.21.1) is intended for current supply, its distribution among the
consumers of tractor electrical equipment and for the protection of electrical lines against cur-
rent overloads and short circuit.
Your tractor can be equipped with two types of switching units - BKА-7.3722-02 or BK-1-
02, which are interchangeable.
The place of unit 3 mounting is the cab, on the metallic bar of plastic shell fixing, between
instrument panel 4 and the windscreen.
To get an access to the relay and the fuses of unit 3, it is required to unscrew two quick-
detachable screws 1, then to remove plastic cap 2. The unit also has the protective plastic cas-
ing for the protection from dust.
1 – screw; 2 – cap; 3 – switching unit; 4 – instrument panel.
The unit consists of thirty cutout fuses 1 (Figure 2.21.2) (FU1-FU30) and eighteen elec-
tromagnetic relays 4 (K1-K7, K9-K19, relay K8 is not mounted), commutating current supply for
consumers, a set of spare fuses 5. Signal led lamps of red color 2 located on the front board
Figure 2.21.1 – Switching unit mounting
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922.6-0000010 OM