Juniper MX2008 Hardware Manual page 37

Figure 8: Power Distribution from Three-Phase Feed Wye PDM to the AC PSMs
AC PS_0
2800W
input
NE1
A1
B1
C1
The AC power system is feed redundant—each PSM takes in two AC feeds and uses one of the two.
One AC feed is active at a time. If one feed fails, the PSM automatically switches over to the other feed
without disrupting system function (see
AC power requirements—Table 6 on page 37
delta and wye power feeds.
Table 6: AC PDM Delta and Wye Current Requirements
Three-Phase Voltage
200 V
(minimum–nominal)
(line-to-line) for delta (per
phase)
200 V
(minimum–nominal)
(line-to-neutral) for wye
(per phase)
AC PS_1 AC PS_4
2800W 2800W
input input
AC PS_3 AC PS_2 AC PS_5
2800W 2800W 2800W
input input input
"MX2008 AC Power Supply Module Description" on page
shows the MX2008 current requirements for the three-phase
Input Feed
1
2
1
2
AC PS_7
2800W
input
AC PS_6 AC PS_8
2800W 2800W
input input
Current Delta per
Three-Phase PDM
50 A
25 A
–
–
NE2
A2
B2
C2
63).
Current Wye per
Three-Phase PDM
–
–
30 A
15 A
37