HP Integrity rx8620 Server User Service Guide

4 Cabling and Power Up
After the server has been unpacked and moved into position, you must connect it to an AC power
source. Before the server is powered on, you must check the AC power for the proper voltage.
Voltage Check
This section provides voltage check information for use on the customer site. The emphasis is
on measuring the voltages at the power cord plug end specified as an IEC-320 C19 type plug.
This is the end that plugs directly into the back of the server cabinet.
NOTE: You need to perform these procedures for each power cord to be plugged into the back
of the server cabinet. If the expected results from this procedure are not observed during the
voltage check, see “Voltage Check (Additional Procedure)” (page 59).
Voltage Range Verification of Receptacle
This measures the voltage between L1 and L2, L1 to ground, and L2 to ground. Three separate
measurements are performed during this procedure. For voltage reference points when performing
the following measurements, see Figure 4-1.
Figure 4-1 Voltage Reference Points for IEC-320 C19 Plug
IMPORTANT: These measurements must be performed for every power cord that plugs into
the server.
To check the voltage, follow these steps:
1. Measure the voltage between L1 and L2. This is considered to be a phase-to-phase
measurement in North America. In Europe and certain parts of Asia-Pacific, this measurement
is referred to as a phase-to-neutral measurement. The expected voltage should be between
200–240 VAC regardless of the geographic region.
2. Measure the voltage between L1 and ground. In North America, verify this voltage is between
100–120 VAC. In Europe and certain parts of Asia-Pacific, verify this voltage is between
200–240 VAC.
3. Measure the voltage between L2 and ground. In North America, verify this voltage is between
100–120 VAC. In Europe and certain parts of Asia-Pacific, verify this voltage is 0 (zero) VAC.
Table 4-1 provides single phase voltage measurement examples dependent on the geographic
region where these measurements are taken.
Voltage Check 57