Usage:
2L1818 Exciter
Armature
Core length ... 3.25 in.(82.6 mm)
Shunt pole air gap ... .044 in.(1.12 mm)
Slots ... 19
Coils ... 38
Coils/bundle ... 2
Type of winding ... bipolar
Total conductors in series ... 304
Turns/coil ... 4
No. & wire size ... 2 - No. 15
Resistance at 167°F (75°C) ... 118 ohms
Coil throw ... 1-10
Commutator
Throw ... 1-2
Segments ... 38
Milling, No. 15 wire (1 wide × 4 deep) ... .060 in. × .240 in.(1.52 mm × 6.10 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .044 in.(1.12 mm)
Length ... 2.38 in.(60.5 mm)
Turns/pole ... 45
Wire size ... No. 8 square
Terminal wire size ... No. 12
Resistance at 167°F (75°C) ... .0463 ohms
Field
Pole length ... 3.25 in.(82.6 mm)
Air gap ... .044 in.(1.12 mm)
Poles/connection ... 2 in series
Turns/pole ... 1400
Wire size ... No. 23
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 86.4 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 210
Wire size ... No. 18
Terminal wire size ... No. 4
Resistance at 167°F (75°C) ... 5.0 ohms
2L1819 Exciter
Armature
Core length ... 2.50 in.(63.5 mm)
Shunt pole air gap ... .039 in.(0.99 mm)
Slots ... 27
Coils ... 81
Coils/bundle ... 3
Type of winding ... series
Total conductors in series ... 324
Turns/coil ... 2
No. & wire size ... 2 - No. 16
Resistance at 167°F (75°C) ... 126 ohms
Coil throw ... 1-8
Commutator
Throw ... 1-41
Segments ... 81
Milling, No. 16 wire (1 wide × 4 deep) ... .054 in. × .216 in.(1.37 mm × 5.49 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .047 in.(1.19 mm)
Length ... 2.50 in.(63.5 mm)
Turns/pole ... 30
Wire size ... No. 8 square
Terminal wire size ... No. 12
Resistance at 167°F (75°C) ... .0265 ohms
Field
Pole length ... 2.50 in.(63.5 mm)
Air gap ... .039 in.(0.99 mm)
Poles/connection ... 4 in series
Turns/pole ... 900
Wire size ... No. 22
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 62.2 ohms
Control Field
Connection ... 4 in series
Turns/pole ... 125
Wire size ... No. 17
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 3.32 ohms
2L2739 Exciter
Armature
Core length ... 3.50 in.(88.9 mm)
Shunt pole air gap ... .039 in.(0.99 mm)
Slots ... 27
Coils ... 81
Coils/bundle ... 3
Type of winding ... series
Total conductors in series ... 324
Turns/coil ... 2
No. & wire size ... 2 - No. 16
Resistance at 167°F (75°C) ... .143 ohms
Coil throw ... 1-8
Commutator
Throw ... 1-41
Segments ... 81
Milling, No. 16 wire (1 wide × 4 deep) ... .054 in. × .216 in.(1.37 mm × 5.49 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .047 in.(1.19 mm)
Length ... 3.50 in.(88.9 mm)
Turns/pole ... 30
Wire size ... No. 8 square
Terminal wire size ... No. 12
Resistance at 167°F (75°C) ... .033 ohms
Field
Pole length ... 3.50 in.(88.9 mm)
Air gap ... .039 in.(0.99 mm)
Poles/connection ... 4 in series
Turns/pole ... 900
Wire size ... No. 22
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 74.2 ohms
Control Field
Connection ... 4 in series
Turns/pole ... 125
Wire size ... No. 17
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 3.84 ohms
2L2740 Exciter
Armature
Core length ... 3.50 in.(88.9 mm)
Shunt pole air gap ... .049 in.(1.24 mm)
Slots ... 27
Coils ... 81
Coils/bundle ... 3
Type of winding ... series
Total conductors in series ... 432
Turns/coil ... 2 2/3 (3, 2, 3)
No. & wire size ... 2 - No. 16
Resistance at 167°F (75°C) ... .19 ohms
Coil throw ... 1-8
Commutator
Throw ... 1-41
Segments ... 81
Milling, No. 16 wire (1 wide × 4 deep) ... .054 in. × .216 in.(1.37 mm × 5.49 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .047 in.(1.19 mm)
Length ... 3.50 in.(88.9 mm)
Turns/pole ... 40
Wire size ... No. 9 square
Terminal wire size ... No. 10
Resistance at 167°F (75°C) ... .054 ohms
Field
Pole length ... 3.50 in.(88.9 mm)
Air gap ... .049 in.(1.24 mm)
Poles/connection ... 4 in series
Turns/pole ... 1150
Wire size ... No. 23
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 119 ohms
Control Field
Connection ... 4 in series
Turns/pole ... 125
Wire size ... No. 17
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 3.84 ohms
2L4136 Exciter
Armature
Core length ... 4.50 in.(114.3 mm)
Shunt pole air gap ... .047 in.(1.19 mm)
Slots ... 30
Coils ... 89 plus 1 dead
Coils/bundle ... 3
Type of winding ... series
Total conductors in series ... 356
Turns/coil ... 2
No. & wire size ... 2 - No. 13
Resistance at 167°F (75°C) ... .10 ohms
Coil throw ... 1-8
Commutator
Throw ... 1-45
Segments ... 89
Milling, No. 13 wire (1 wide × 4 deep) ... .075 in. × .300 in.(1.91 mm × 7.62 mm)
Interpole
Interpole connection ... 4 in series
Air gap ... .062 in.(1.57 mm)
Length ... 3.50 in.(88.9 mm)
Turns/pole ... 28
Wire size ... No. 6 square
Terminal wire size ... No. 8
Resistance at 167°F (75°C) ... .040 ohms
Field
Pole length ... 4.50 in.(114.3 mm)
Air gap ... .047 in.(1.19 mm)
Poles/connection ... 4 in series
Turns/pole ... 650 - No. 22 & 500 - No. 21
Wire size ... No. 22 & No. 21
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 111.3 ohms
Control Field
Connection ... 4 in series
Turns/pole ... 100
Wire size ... No. 15
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 2.48 ohms
2L4137 Exciter
Armature
Core length ... 3.75 in.(95.3 mm)
Shunt pole air gap ... .047 in.(1.19 mm)
Slots ... 28
Coils ... 84 plus 1 dead
Coils/bundle ... 3
Type of winding ... series
Total conductors in series ... 420
Turns/coil ... 2 1/2*
No. & wire size ... 2 - No. 15
Resistance at 167°F (75°C) ... .167 ohms
Coil throw ... 1-8
*(2,3,2) & (3,2,3), 14 bundles (2,3,2) and 14 bundles (3,2,3): put in slots to get 2,3,2,3,2 etc. turns/coil
Commutator
Throw ... 1-43
Segments ... 85
Milling, No. 15 wire (1 wide × 4 deep) ... .060 in. × .240 in.(1.52 mm × 6.10 mm)
Interpole
Interpole connection ... 4 in series
Air gap ... .047 in.(1.19 mm)
Length ... 2.75 in.(69.9 mm)
Turns/pole ... 33
Wire size ... No. 8 square
Terminal wire size ... No. 8
Resistance at 167°F (75°C) ... .0643 ohms
Field
Pole length ... 3.75 in.(95.3 mm)
Air gap ... .047 in.(1.19 mm)
Poles/connection ... 4 in series
Turns/pole ... 1300
Wire size ... No. 22
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 122 ohms
Control Field
Connection ... 4 in series
Turns/pole ... 100
Wire size ... No. 16
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 2.83 ohms
3L6221 Exciter
Armature
Core length ... 2.50 in.(63.5 mm)
Shunt pole air gap ... .039 in.(0.99 mm)
Slots ... 27
Coils ... 81
Coils/bundle ... 3
Type of winding ... series
Total conductors in series ... 324
Turns/coil ... 2
No. & wire size ... 2-No. 16
Resistance at 167°F (75°C) ... 126 ohms
Coil throw ... 1-8
Commutator
Throw ... 1-41
Segments ... 81
Milling, No. 16 wire (1 wide × 4 deep) ... .054 in. × .216 in.(1.37 mm × 5.49 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .047 in.(1.19 mm)
Length ... 2.50 in.(63.5 mm)
Turns/pole ... 30
Wire size ... No. 8 square
Terminal wire size ... No. 12
Resistance at 167°F (75°C) ... .0265 ohms
Field
Pole length ... 2.50 in.(63.5 mm)
Air gap ... .039 in.(0.99 mm)
Poles/connection ... 4 in series
Turns/pole ... 900
Wire size ... No. 22
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 62.2 ohms
Control Field
Connection ... 4 in series
Turns/pole ... 125
Wire size ... No. 17
Terminal wire size ... No. 14
Resistance at 167°F (75°C) ... 3.32 ohms
5N1986 Exciter
Armature
Core length ... 3.50 in.(88.9 mm)
Shunt pole air gap ... .052 in.(1.32 mm)
Slots ... 20
Coils ... 80
Coils/bundle ... 4
Type of winding ... bipolar
Total conductors in series ... 480
Turns/coil ... 3
No. & wire size ... 1-No. 16 & 1-No. 17
Resistance at 167°F (75°C) ... .285 ohms
Coil throw ... 1-11
Commutator
Throw ... 1-2
Segments ... 80
Milling, width x depth ... .054 in. × .202 in.(1.37 mm × 5.13 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .085 in.(2.16 mm)
Length ... 3.50 in.(88.9 mm)
Turns/pole ... 69
Wire size ... No. 11 square
Terminal wire size ... No. 10
Resistance at 167°F (75°C) ... .191 ohms
Field
Pole length ... 3.50 in.(88.9 mm)
Air gap ... .052 in.(1.32 mm)
Poles/connection ... 2 in series
Turns/pole ... 900
Wire size ... No. 23
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 66.0 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 130
Wire size ... No. 18
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 3.55 ohms
5N1987 Exciter
Armature
Core length ... 2.00 in.(50.8 mm)
Shunt pole air gap ... .052 in.(1.32 mm)
Slots ... 20
Coils ... 80
Coils/bundle ... 4
Type of winding ... bipolar
Total condutors in series ... 480
Turns/coil ... 3
No. & wire size ... 1-No. 16 & 1-No. 17
Resistance at 167°F (75°C) ... .247 ohms
Coil throw ... 1-11
Commutator
Throw ... 1-2
Segments ... 80
Milling, width x depth ... .054 in. x .202 in.(1.37 mm x 5.13 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .085 in.(2.16 mm)
Length ... 2.00 in.(50.8 mm)
Turns/pole ... 69
Wire size ... No. 11 square
Terminal wire size ... No. 10
Resistance at 167°F (75°C) ... .146 ohms
Field
Pole length ... 2.00 in.(50.8 mm)
Air gap ... .052 in.(1.32 mm)
Poles/connection ... 2 in series
Turns/pole ... 670
Wire size ... No. 21
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 26.0 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 150
Wire size ... No. 18
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 3.53 ohms
5N1988 Exciter
Armature
Core length ... 1.50 in.(38.1 mm)
Shunt pole air gap ... .052 in.(1.32 mm)
Slots ... 20
Coils ... 80
Coils/bundle ... 4
Type of winding ... bipolar
Total conductors in series ... 600
Turns/coil ... 3 3/4 (3,4,4,4)
No. & wire size ... 1-No. 17 & 1-No. 18
Resistance at 167°F (75°C) ... .359 ohms
Coil throw ... 1-11
Commutator
Throw ... 1-2
Segments ... 80
Milling, width X depth ... .050 in. x .185 in.(1.27 mm x 4.70 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .085 in.(2.16 mm)
Length ... 1.50 in.(38.1 mm)
Turns/pole ... 86
Wire size ... No. 12 square
Terminal wire size ... No. 12
Resistance at 167°F (75°C) ... .224 ohms
Field
Pole length ... 1.50 in.(38.1 mm)
Air gap ... .052 in.(1.32 mm)
Poles/connection ... 2 in series
Turns/pole ... 840
Wire size ... No. 22
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 38.2 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 200
Wire size ... No. 18
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 4.65 ohms
5N2484 Exciter
Armature
Core length ... 4.50 in.(114.3 mm)
Shunt pole air gap ... .052 in.(1.32 mm)
Slots ... 20
Coils ... 80
Coils/bundle ... 4
Type of winding ... bipolar
Total conductors in series ... 520
Turns/coil ... 31/4 (3,3,3,4)
No. & wire size ... 2-No. 17
Resistance at 167°F (75°C) ... .382 ohms
Coil throw ... 1-11
Commutator
Throw ... 1-2
Segments ... 80
Milling, width x depth ... .047 in. x .194 in.(1.19 mm x 4.93 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .085 in.(2.16 mm)
Length ... 4.50 in.(114.3 mm)
Turns/pole ... 74
Wire size ... No. 11 square
Terminal wire size ... No. 12
Resistance at 167°F (75°C) ... .255 ohms
Field
Pole length ... 4.50 in.(114.3 mm)
Air gap ... .052 in.(1.32 mm)
Poles/connection ... 2 in series
Turns/pole ... 900
Wire size ... No. 23
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 71.6 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 140
Wire size ... No. 17
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 3.38 ohms
5N2485 Exciter
Armature
Core length ... 7.00 in.(177.8 mm)
Shunt pole air gap ... .052 in.(1.32 mm)
Slots ... 20
Coils ... 80
Coils/bundle ... 4
Type of winding ... bipolar
Total conductors in series ... 320
Turns/coil ... 2
No. & wire size ... 2-No. 15
Resistance at 167°F (75°C) ... .179 ohms
Coil throw ... 1-11
Commutator
Throw ... 1-2
Segments ... 80
Milling, width x depth ... .060 in. x .240 in.(1.52 mm x 6.10 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .085 in.(2.16 mm)
Length ... 7.00 in.(177.8 mm)
Turns/pole ... 46
Wire size ... No. 9 square
Terminal wire size ... No. 10
Resistance at 167°F (75°C) ... .132 ohms
Field
Pole length ... 7.00 in.(177.8 mm)
Air gap ... .052 in.(2.16 mm)
Poles/connection ... 2 in series
Turns/pole ... 750
Wire size ... No. 22
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 61.3 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 140
Wire size ... No. 17
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 4.09 ohms
5N2486 Exciter
Armature
Core length ... 3.50 in.(88.9 mm)
Shunt pole air gap ... .052 in.(1.32 mm)
Slots ... 20
Coils ... 80
Coils/bundle ... 4
Type of winding ... bipolar
Total conductors in series ... 400
Turns/coil ... 2 1/2 (2,2,3,3)
No. & wire size ... 1-No. 16 & 1-No. 17
Resistance at 167°F (75°C) ... .248 ohms
Coil throw ... 1-11
Commutator
Throw ... 1-2
Segments ... 80
Milling, width x depth ... .052 in. x .205 in.(1.32 mm x 5.21 mm)
Interpole
Interpole connection ... 2 in series
Air gap ... .085 in.(2.16 mm)
Length ... 3.50 in.(88.9 mm)
Turns/pole ... 56
Wire size ... No. 10 round
Terminal wire size ... No. 10
Resistance at 167°F (75°C) ... .153 ohms
Field
Pole length ... 3.50 in.(88.9 mm)
Air gap ... .052 in.(1.32 mm)
Poles/connection ... 2 in series
Turns/pole ... 750
Wire size ... No. 22
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 44.4 ohms
Control Field
Connection ... 2 in series
Turns/pole ... 140
Wire size ... No. 18
Terminal wire size ... No. 16
Resistance at 167°F (75°C) ... 3.72 ohms