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User Manual
2253i / 2253iX
AMETEK
California Instruments
122
FREQUENCY TRANSIENTS
(Group 1 and A(CF) only)
Seq. No
Frequency
Time
1
400
5 Minute
2
440
150msec
3
420
1.5sec
4
400
5Sec.
5
350
150msec
6
380
1.5sec
7
400
5Sec.
Table 9-6: Normal Frequency Transient Sequence
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 9-6. 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
Initial Frequency
Slew rate
Final Frequency
Group2
Group3
Hz/Sec
Group2
Group3
1
360
360
100
650
800
2
650
800
100 or 200
360
360
3
360
360
Pause 5 sec
360
360
Table 9-7: Normal Frequency Variation Sequence
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 9-7. 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.
Содержание 2253i
Страница 5: ...User Manual 2253i 2253iX AMETEK California Instruments 5 SAFETY SYMBOLS...
Страница 99: ...User Manual 2253i 2253iX AMETEK California Instruments 99 Figure 6 1 Internal adjustment locations...
Страница 118: ...User Manual 2253i 2253iX AMETEK California Instruments 118 Figure 9 4 Voltage Modulation Frequency characteristics...