HP Server rp8400 Installationsanleitung PDF herunterladen (Seite 55)

Chapter 4

AC Power

Wiring and Voltage Checks

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. Refer to

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

Figure 4-3Safety Ground Reference Check - Dual Power Source

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

meter. One probe will be inserted into the ground pin for A0. The other probe will be inserted into

the ground pin for A1. Verify that the measurement is between 0 - 5 volts AC. If the measurement

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

cabinet.

Step 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 volts AC. If the measurement

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

cabinet.

Step 3. Measure the voltage between A0 and B0. Take the AC voltage down to the lowest scale on the volt

meter. One probe will be inserted into the ground pin for A0. The other probe will be inserted into

the ground pin for B0. Verify that the measurement is between 0 - 5 volts AC. If the measurement

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

cabinet.

Step 4. Measure the voltage between A1 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 A1. The other probe will be inserted into

the ground pin for B1. Verify that the measurement is between 0 - 5 volts AC. If the measurement

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

cabinet.

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HP Server rp8400 Installationsanleitung Seite 55