Figure 71: AC PDM Three-Phase Wye Input Power
g007086
AC PS_0
2800W
input
AC PS_3
2800W
input
AC PS_2
2800W
input
AC PS_5
2800W
input
A1
B1
C1
AC PS_1
2800W
input
AC PS_4
2800W
input
NE1
C2
NE2
AC PS_6
2800W
input
A2
B2
AC PS_7
2800W
input
AC PS_8
2800W
input
AC PSM VIN=200-240 single phase:
a. Two AC PSMs are connected in parallel between two lines and neutral.
b. Nominal value of input current for one AC PSM is 2800 W/200 V=14 A.
c. Nominal input current for two AC PSMs is 2*14 A=28 A.
d. Nominal value of line current is 28 A.
e. So, input #1 rated current is 28 A.
f. Only one AC PSM is connected between two lines and neutral.
g. Nominal value of input current for one AC PSM is 2800 W/200 V=14 A.
h. Nominal value of line current is 14 A.
i. Current rating for input #2 is 14 A.
5. Calculate thermal output (BTUs). Multiply the input power requirement (in watts) by 3.41 as shown in
Table 67 on page 190.
189
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