Table 9-5: Normal Frequency Transient Sequence; Table 9-6: Normal Frequency Variation Sequence - Ametek California Instruments MX15 Series User Manual

FREQUENCY TRANSIENTS (Group 1 and A(CF) only)
This test applies to Group1 and A(CF) only. The output voltage is set to Vnom (115 V) while the
frequency is changed per the sequence listed in Table 9-5. The test will cycle 5 times starting
from sequence 2. Steps 3 and 6 apply to A(CF) only.
FREQUENCY VARIATION (Group2 / A(NF) and Group3 / A(WF) only)
Seq. No
1
2
3
This test will apply to Group2/A(NF) and Group3/A(WF) only. . The output voltage is set to
Vnom (115 V) while the frequency is set to 360Hz for 5 minutes. The frequency is slowed per
the sequence listed in Table 9-6. The test will cycle 3 times. The frequency will return to nominal
after the test is completed. Slew rates of 200Hz apply to RTCA2 only.
MX15
Seq. No Frequency
1 400
2 440
3 420
4 400
5 350
6 380
7 400

Table 9-5: Normal Frequency Transient Sequence

Initial Frequency
Group2 Group3
360 360
650 800
360 360

Table 9-6: Normal Frequency Variation Sequence

Time
5 M inute
150msec
1.5sec
5Sec.
150msec
1.5sec
5Sec.
Slew rate Final Frequency
Hz/Sec Group2
100 650
100 or 200 360
Pause 5 sec 360
Group3
800
360
360
143