TP-6196 10/09 15Section 1 Specifications
1.6 Alternator Specifications
Alternator Specification 8.5/12 kW 1 phase 12TRES 3 phase
Frequency Hz 50/60 50
Phase Single-Phase Three
Number of leads 4 12
Excitation method Static Excited
Voltage regulator type Digital
Coupling type Direct
Thrubolt torque, Nm ( ft. lb.) 40 (28)
Overbolt torque, Nm (in. lb.) 7 (60)
Insulation (rotor and stator) Epoxy varnish, vacuum impregnated
Class 180 (H)
Winding material Copper
Bearing, number and type 1, replaceable ball
Circuit protection
Controller 10 amps
Aux. winding 20 amps
Generator AC output Dependent on voltage configuration
Rotor resistance, ohms, cold 4.0 4.2
Stator resistanc e, ohms,* cold
Single-Phase Leads 1-2, 3-4 0.07 N/A
Three-Phase Leads 1-4, 2-5, 3-6, 7-10, 8-11, 9-12 N/A 0.18
Leads 11-44 0.14 N/A
55-66 0.70 0.15
Stator output voltage with separately excited rotor using 12-volt
battery, minimum
Single-Phase Leads 1-2, 3-4 132 V N/A
Three-Phase Leads 1-4, 2-5, 3-6, 7-10, 8-11, 9-12 N/A 115 V
11-44 264 V N/A
55-66 145 V 150 V
Rotor field voltage/current readings at rated output voltage, hot
No load 12 V /2.0 amps 14 V /2.8 amps
Full load 47 V /7.4 amps 78 V /11.5 amps
Brush length, new 19.05 mm (0.75 in.)
* 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.