DS8000 Service Documentation Version 6.3.3

Checking customer voltage with customer CB off (wired)

Procedure

  1. Prepare the multimeter to measure 1.0 V ac or less.
  2. Measure the voltage between each pair of voltage pins on the female connector on each mainline power cable. Also, measure the voltage between each voltage pin (for three phase  A ,  B , and  C  or for single phase  A  and  B ) and the ground pin on each mainline power cable. Refer to Figure 1 or Figure 2.

    Did any voltage measure more than 1.0 V ac?

    • Yes, inform the customer that one or more voltage pins on the customer supply measured greater than 1.0 V ac even though the circuit breaker is off. Do not continue until the voltage is less than 1.0 V ac.
    • No, continue with Checking customer voltage with customer CB on (wired).
    Figure 1. Three-phase mainline power connector
    Three-phase mainline power connector
    Figure 2. Single phase mainline power connector
    Single phase, mainline power connector