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Chapter 2

Installing the System

Cabling and Powering On the Server

After the system has been unpacked and moved into position, it must be connected to a source of AC power.

The AC power must be checked for the proper voltage before the system is powered up. This chapter describes

these activities.

Checking the Voltage

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 Perform these procedures for each power cord that will be plugged directly into the back of the

server cabinet. If you do not obtain the expected results from this procedure during the voltage

check, refer to the section titled “Voltage Check (Additional Procedure)” on page 78.

Verifying the Voltage Range of the Recptacle

Use this procedure to measure the voltage between L1 and L2, L1 to ground, and L2 to ground. Refer to

Figure 2-22 for voltage reference points when performing the following measurements.

Figure 2-22 Voltage Reference Points for IEC-320 C19 Plug

IMPORTANT Perform these measurements for every power cord that plugs into the server.

Step 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 V AC regardless

of the geographic region.

Step 2. Measure the voltage between L1 and ground. In North America, verify that this voltage is between

100–120 V AC. In Europe and certain parts of Asia-Pacific, verify that this voltage is between

200–240 V AC.

Step 3. Measure the voltage between L2 and ground. In North America, verify that this voltage is between

100–120 VAC. In Europe and certain parts of Asia-Pacific, verify that this voltage is 0 (zero) V AC.

HP Integrity rx8640 Installation Guide

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