HP Integrity rx8620 Server User Service Guide

Table 4-1 Single Phase Voltage Examples

Europe

North AmericaJapan

230V208V or 240V210VL1-L2

230V120V105VL1-GND

0V120V105VL2-GND

1 In some European countries there may not be a polarization.

Safety Ground Verification (Single Power Source)

This procedure measures the voltage level between A0 and A1. The voltage level between B0

and B1 will also be verified. All measurements will be taken between ground pins. For ground

reference points when performing these measurements, see Figure 4-2.

Figure 4-2 Safety Ground Reference Check - Single Power Source

To verify single power source safety ground voltage levels, follow these steps:

1. Measure the voltage between A0 and A1. Take the AC voltage down to the lowest scale on

the volt meter. Insert one probe into the ground pin for A0. Insert the other probe into the

ground pin for A1. Verify that the measurement is between 0–5 VAC. If the measurement

is 5 V or greater, escalate the situation. Do not attempt to plug the power cords into the

server cabinet.

2. Measure the voltage between B0 and B1. Take the AC voltage down to the lowest scale on

the volt meter. One probe will be inserted into the ground pin for B0. The other probe will

be inserted into the ground pin for B1. Verify that the measurement is between 0–5 VAC. If

the measurement is 5 V or greater, escalate the situation. Do not attempt to plug the power

cords into the server cabinet.

Safety Ground Verification (Dual Power Source)

This procedure measures the voltage level between A0 and A1, between B0 and B1, between A0

and B0, and between A1 and B1. All measurements will be taken between ground pins. For

ground reference points when performing these measurements, see Figure 4-3.

58 Cabling and Power Up