<-- Back Items 12 - 17

Item 18. Slot pitch, l
Use: Use: Use: l = t / (S/p)
Round-off to three decimal places.

Item 19. Number of Conductor per slots, C_s
Use: Cs_trial = q_trial × l / I_c.
Cs_final is a whole number of Cs_trial.
Solve for the equivalent specific loading, q_final, using the Cs_final.

Item 20. Stator Conductor in Series per phase, Z
Use: Z = p × n_s × C_s.
Should be a whole number based on the most appropriate combination of Slots per Pole per Phase: n_s and Number of Conductors per slot: C_s.

Item 21. Air Gap Flux per pole (open circuit), F_NL
Use: F_NL = V_t × 10⁸ / × 2.22 × d × f × Z .
Rounded to nearest 10,000 maxwells.

Finalize B"g_ave and B"g_max in Item 06

Item 22. Maximum Apparent Tooth Flux Density , B"t
Use: B"t_trial = 85,000 lines/sq.in.
Use: B"t_final = B"t_trial × [ t / t_end ]
For 60-hz machines, between 75,000 to 105,000 lines per sq. in..
Rounded-off to nearest 1,000.
Use: B"t_1/3 = B"t_final × [ t_end / t_1/3 ]

Item 23. Tooth Dimensions
Use: t_trial = l / 2 + 0.027.
This item SHOULD serve only as a guide.

Item 23a. Permissible Tooth Width, t
Use: t = B"g_max × l × la / ( B"t_trial × ln ).
Other values of tooth widths should not exceed this value.

Item 23b. Narrow End Tooth Width, t_end
Use: t_end = t - 0.025
Rounded to the nearest two decimals.

Item 23c. Tooth Width at Top, Near Air Gap, t_top
Use: t_top = [( pD - s ) / S_A ] - s
Where s = slot width
S_A = Number of Armature
Rounded to the nearest three decimals.

Item 23d. Tooth Width at Root, t_root
Use: t_root = [ p (Do - 2Rd_final ) / S_A ] - s
Where s = slot width
S_A = Number of Armature
Rounded to the nearest three decimals.

Item 23e. Average Tooth Width, t_ave, t_mid
Use: t_ave = ½ (t_top + t_root )
Rounded to the nearest three decimals.

Item 23f. Tooth Width at 1/3 of Slot Depth from Root, t_1/3
Use: t_1/3 = t_end + 1/3 (t_root - t_end )
Rounded to the nearest three decimals.

Items 24 - 32

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