HP Integrity rx7620 Installation Guide, Seventh Edition - HP Integrity rx7620 - Page 74

Safety Ground Reference Check, Safety Ground Verification

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Cable Connections AC Voltage Check Safety Ground Verification This measures the voltage level between B0 and A0. The measurement is taken between ground pins of the two power cords. Refer to Figure 4-5 for ground reference points when performing this measurement. Figure 4-5 Safety Ground Reference Check Step 1. Measure the voltage between B0 and A0. Take the AC voltage down to the lowest scale on the volt meter. Step 2. Insert one probe into the ground pin for B0. Step 3. Insert the other probe into the ground pin for A0. Step 4. Verify that the measurement is between 0-5V AC. If the measurement is 5V or greater, escalate the situation. Do not attempt to plug the power cords into the HP Integrity rx7620 Server. 74 Chapter 4

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Chapter 4
Cable Connections
AC Voltage Check
74
Safety Ground Verification
This measures the voltage level between B0 and A0. The measurement is taken between ground
pins of the two power cords. Refer to Figure 4-5 for ground reference points when performing this
measurement.
Figure 4-5 Safety Ground Reference Check
Step 1.
Measure the voltage between B0 and A0. Take the AC voltage down to the lowest scale on the volt
meter.
Step 2.
Insert one probe into the ground pin for B0.
Step 3.
Insert the other probe into the ground pin for A0.
Step 4.
Verify that the measurement is between 0–5V AC. If the measurement is 5V or greater, escalate the
situation. Do not attempt to plug the power cords into the HP Integrity rx7620 Server.