Alternator Specifications - Kohler 8.5RES Service

1.6 Alternator Specifications

Alternator Specification
Frequency Hz
Phase
Number of leads
Excitation method
Voltage regulator type
Coupling type
Thrubolt torque, Nm ( ft. lb.)
Overbolt torque, Nm (in. lb.)
Insulation (rotor and stator)
Winding material
Bearing, number and type
Circuit protection
Controller
Aux. winding
Generator AC output
Rotor resistance, ohms, cold
Stator resistance, ohms,* cold
Single-Phase Leads 1-2, 3-4
Three-Phase Leads 1-4, 2-5, 3-6, 7-10, 8-11, 9-12
Leads 11-44
55-66
Stator output voltage with separately excited rotor using 12-volt
battery, minimum
Single-Phase Leads 1-2, 3-4
Three-Phase Leads 1-4, 2-5, 3-6, 7-10, 8-11, 9-12
11-44
55-66
Rotor field voltage/current readings at rated output voltage, hot
No load
Full load
Brush length, new
* Most ohmmeters do not give accurate readings when measuring less than 1 ohm. The stator can be considered good if a low resistance
reading (continuity) is obtained and there is no evidence of shorted windings (discoloration). Do not confuse a low resistance reading with
a reading indicating a shorted winding.
TP-6196 10/09
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8.5/12 kW 1 phase 12TRES 3 phase
50/60
Single-Phase
4
Static Excited
Digital
Direct
40 (28)
7 (60)
Epoxy varnish, vacuum impregnated
Class 180 (H)
Copper
1, replaceable ball
10 amps
20 amps
Dependent on voltage configuration
4.0
0.07
N/A
0.14
0.70
132 V
N/A
264 V
145 V
12 V / 2.0 amps
47 V / 7.4 amps 78 V /11.5 amps
19.05 mm (0.75 in.)
Section 1 Specifications
50
Three
12
4.2
N/A
0.18
N/A
0.15
N/A
115 V
N/A
150 V
14 V / 2.8 amps
15