best books from War Department TM 5-5052 Generator Set, Portable, Diesel, Skid Mounted, 100 Kw, 127/220 Volt, 3 Phase, 60 Cycle Or 230/400 Volt, 3 Phase, 50 Cycle, Murphy, Model ME 650, 1944

CONTENTS Page

I GENERAL DESCRIPTION 87 to 90

Synchronous Generator 87

Electrical Rating 87

Temperature Rating 87

Mechanical Construction 88

Manufacturer's Identification 88

Exciter 88,89

Electrical Rating 89

Temperature Rating 89

Mechanical Construction 89

Voltage Regulator 89

Switch Cabinets 90

II OPERATING INSTRUCTIONS 91 to 94

Installing 91

Connections 91

60 Cycle Operation 91

50 Cycle Operation 91

Load Connections 92

Before Starting 92

Starting 92

Automatic Regulation 92

Hand Regulation 92

Low Voltage 93

Generator 93

Exciter 93

Voltage Regulator 93

Operating Two Generators Connected Together (Parallel Operation) 93,94

III MAINTENANCE 95 to 108

Cleanliness 95

Generator 95

Bearings 95

Lubrication 95

Removal 96

Collector Rings and Brushes 96,97

Cause 97

Remedy 97

Field Poles 98,99

Armature 99

Replace Coils 99

Replace Core and Coils 100

Terminal Box 100

SYNCHRONOUS GENERATOR "A"

CONTENTS Page

III MAINTENANCE— (Cont'd)

Exciter 100 to 104

Bearings 100

Lubrication 100, 101

Removal 101

Sheave End 101

Commutator 102

Armature 102

Commutator and Brushes 102, 103

Brushes 103

Frame and Field 104

Voltage Regulator 104 to 108

Polarity Reversing Switch 104

Regulator Contacts 104

Care 104

Replacement 104, 105

Working on Contacts with Generator in Service 105

Air-Gap between Vibrator and Core of Regulator 106

Troubles and Their Elimination 106

Voltage Will Not Build Up 106

Voltage Regulator Does Not Control the Voltage at All 106

Voltage Becomes Erratic 107

Voltage Sensitivity is Poor 107

Voltage Droops Excessively with Increase in Generator Load 107

Contacts Sparks Too Much 108

Cross Current Compensation 108