Connector Elements Of The Electrical Equipment; Socket To Connect Coupled Agricultural Equipment; Connection Of Additional Electrical Equipment Of Coupled Machines - Belarus 1822.3 Operator's Manual

2.22 Connector elements of the electrical equipment

2.22.1 Socket to connect coupled agricultural equipment

A standard seven-pin socket with an additional receiver to connect a portable lamp (figure
2.22.1) is intended to connect current consumers of a trailer or trailed agricultural implement. It is
mounted on the rear cab support. A male plug of wire harness from a trailer or coupled agricultural
implements is connected to the socket.
1 – left turn indicator; 2 – horn; 3 – ground; 4 – right turn indicator; 5 – right marker
light; 6 – brake light; 7 – left marker light; 8 – receiver to connect a portable lamp or other
electrical elements with useful current up to 8A.
Figure 2.22.1 – assignment of seven-pin socket terminals with an additional receiver
to connect a portable lamp.

2.22.2 Connection of additional electrical equipment of coupled machines

To control the working process of coupled machines it is assumed to install control equip-
ment (control consoles), which belongs to the coupled machine.
Coupled machines are equipped with various electrical and electronic units, the ac-
tivity of which can influence readings of tractor instruments. Thus, the applied electrical in-
struments shall have a certificate of electromagnetic compatibility as per international re-
quirements.
Connect electrical equipment of coupled machines to the following elements of trac-
tor electrical equipment:
1. Seven-pin socket (type 12N, GOST 9200, figure 2.22.1) – permissible input cur-
rent is not higher than 10A, the electrical circuit is protected by a fuse in tractor electrical
equipment:
- "+" to terminal No5 of the socket;
- "–" to terminal No3 of the socket (it is possible to connect the coupled machine
electrical consumer with the parking lights of this machine on).
2. Two-pin socket (ISO 4165:2001), located on the body of the seven-pin socket
(figure 2.22.1).
- (terminal No8) – permissible input current is not higher than 12A, the electrical cir-
cuit is protected by a fuse in tractor electrical equipment;
3. Tractor alternator.
- "+" to terminal " +" of the alternator (terminal diameter = 8mm).
- "–" to engine housing.
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