Yaroslavl Engine Plant YMZ-536, Operation Manual

Page: 108 / 168

108
ELECTRICAL EQUIPMENT
Electrical equipment operates in a single-wire DC system with 24V of
rated voltage. The negative pole of the power source is connected to
the vehicle body.
STARTER
The YMZ engines are equipped with an electric starter. Its
specifications are listed below.
Specifications
Rated voltage, V 24
Rated power, kWt 4.0
Idle current, A
Starter relay switching voltage, V 24
Idle RPM of the anchor, min
-1
Starter mass, kg 10
GENERATOR
The engines are equipped with a 2.5 kW AC generator (28V, 100A)
having a built-in voltage regulator with external leads «W», «D».
Specifications
Rated voltage, V 28
Rated current, A 100
Current generated, with regard to
anchor’s speed, A
2000 min
–1
50
3000 min
–1
75
4000 min
–1
86
5000 min
–1
93
Rotation speed at engine’s rated
RPM, min
-1
6780
Maximum rotation speed, min
-1
18000
Generator mass, kg 7.6
The engines for LiAZ buses are equipped with a 3.5 kW AC generator
(28V, 140A) having a built-in voltage regulator with external leads
«W», «D».