MIL-DTL-62576B
3.4.7.2 Types II and III (pin "E" ungrounded). With the generator operating over the
speed range of 2400 to 8000 rpm, the regulator shall provide the following control
(see 4.5.6.2 and 4.5.6.3):
a. No less than 350 A shall be maintained within the voltage regulation range of
28 + 0.7 V.
b. The regulator shall limit the generator output current within the limits shown in
figure 3.
c. The regulator shall attain stable current regulation in the current limit mode within
0.3 seconds of load application.
d. The regulator shall attain stable voltage regulation upon load release within
0.3 seconds after entering the lower voltage regulation limit (27.3 V) shown in
figure 4.
e. In the current limit mode, the frequency of oscillation of the dc voltage shall have
a period of less than 14 ms (T as shown in figure 4) and a peak-to-peak value
(V as shown in figure 4) of less 10 percent (%) of the dc voltage.
3.4.7.3 Type III (pin "E" grounded). With the generator operating at 3000 rpm, the
regulator shall provide the following control (see 4.5.6.4 and 4.5.6.5):
a. No less than 100 A shall be maintained within the voltage regulation range of
28 + 0.7 V.
b. The regulator shall limit the generator output current within the limits shown in
figure 3.
c. The regulator shall attain stable current regulation in the current limit mode within
0.3 seconds of load application.
d. The regulator shall attain stable voltage regulation upon load release within
0.3 seconds after entering the lower voltage regulation limit (27.3 V) shown in
figure 4.
e. In the current limit mode, the frequency of oscillation of the dc voltage shall have
a period of less than 14 ms (T as shown in figure 4) and a peak-to-peak value
(V as shown in figure 4) of less 10 percent (%) of the dc voltage.
3.4.8 Overvoltage.
3.4.8.1 Type I. Not applicable.
3.4.8.2 Types II and III. The regulator generator system shall be protected from any
failure in the regulator which will cause the regulator to go "full on". The overvoltage portion of
the regulator shall react to deactivate the generator when the system voltage reaches a value of
33 + 1 V. Overvoltage reaction time shall be not less than 0.25 second and not more than
1 second. Reset shall be manual and located on the regulator (see 4.5.7.1 and 4.5.7.2).
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