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We recommend that you rotate the L1, L2, and L3 cable conductor connection for the two power shelves to
improve system availability due to common phase outage.
Note
The ground cable conductor connector nuts have a 20 in.-lb (2.26 N-m) torque value, and the power cable
conductor connector screws on the terminal block have a 9 in.-lb (1.04 N-m) torque value.
Note
AC Delta Power Shelf
The AC Delta power shelf arrives with a 4-wire Delta cord and an IEC 60309 plug rated 250 V/60 A, IP67,
3W+PE; it is 4 meters long. The power shelf has four corresponding terminations: three active (“hot”) and
one ground. The ground lug and terminal block are located behind a removable cover on the rear of the power
shelf. The terminal block contains three terminations to attach the three active cable conductors from the input
power cord. The ground cable conductor from the input power cord is attached to the ground lug.
The rear of the AC Delta power shelf with the rear cover removed is shown in this figure.
Figure 21: AC Delta Power Shelf Rear
Lead 3 (L3)
3
Lead 1 (L1)
1
Ground
4
Lead 2 (L2)
2
Leads 1, 2, and 3 (L1, L2, and L3) are not associated with any particular color of cable conductor because
they are not connected to neutral or the safety ground (4).
Note
We recommend that you rotate the L1, L2, and L3 cable conductor connection for the two power shelves to
improve system availability due to common phase outage.
Note
Cisco CRS Routers 16-Slot Line Card Chassis Installation Guide
35
Installing and Removing Power Components
AC Delta Power Shelf
Содержание CRS-16-LCC/M
Страница 20: ...Cisco CRS Routers 16 Slot Line Card Chassis Installation Guide xx Preface Preface ...
Страница 118: ...Cisco CRS Routers 16 Slot Line Card Chassis Installation Guide 98 Installing and Removing Power Components Steps ...
Страница 252: ...Cisco CRS Routers 16 Slot Line Card Chassis Installation Guide 232 Upgrading Chassis Components Steps ...