Connecting Power Cables - Hitachi AMS 2100 Hardware Manual

Connecting power cables

Complete the following steps to connect power cables to the rack PDB.
Check that the PDB power cables connection is performed by the service
personnel.
CAUTION! Check all power cables for cuts or cracks in the
insulation before using them. Replace the cable as needed.
CAUTION! When inserting the power cable in the connector of
PDB, insert it completely, and then secure it with a cable clamp,
etc. If it is loosened, the connection is damaged, and it causes an
electric shock or fire.
NOTE: Make sure that conductors are provided with 30 A overcurrent
protection in accordance with Article 240 of the National Electrical Code,
ANSI/NFPA 70, and the Canadian Electrical Code, Part 1, CSA C22.1,
Section 14.
1. Make sure that the switch or breaker on each PDB in the rack has been
turned off.
2. Insert the power cable plug into the receptacle on each power supply.
Use the PDB receptacles in the order from the J101 to J103.
3. Secure the power cable retainers onto the power cables to prevent them
from accidentally pulling away from the receptacles.
4. Plug the power cable connected to power supply #0 into a PDB on the
left side of the rack and plug the power cable from power supply #1 into
the PDB on the other side of the rack. This ensures that the power
supplies are connected to different AC sources and are therefore
redundant.
CAUTION! If both power supplies are connected to the same power
source, both will fail if the AC power fails and the unit will also fail.
• Do not plug any power cable other than a power cable from the
mounted array to an outlet on the PDB.
• Make sure that the load on both of the PDBs in a rack does not exceed
16 amps.
• Connect the power cables so that the load on a PDB does not exceed 16
amps after checking the load through a calculation
• Limit the load on each PDB in the rack to 8 amps. Use the following
values to calculate the load:
AMS 2100 Base Unit
Table 5-10: AMS 2100/2300 Power Requirements
Unit
Installation
Hitachi AMS 2100/2300 Storage System Hardware Guide
Current at 100 - 120VAC
3.8 Amps
5–49