DS8000 Service Documentation Version 7.5
Checking customer voltage with customer CB on (wired)
Procedure
- Remove
the lockout tag and/or device that was applied to each customer mainline
AC voltage circuit breaker, then switch on the customer circuit breaker.
- Prepare the multimeter to read line voltage AC.
DANGER
Dangerous voltages may be present. Do not touch the
internal parts (pins and connectors) of the customer receptacle.
- Measure the voltage between the ground pin and each voltage
pin (for three phase A , B ,
and C or
for single phase A and B ) on
each mainline power cable. Refer to Figure 1 or Figure 2. For the top exit line
cord feature, refer to Figure 3 and Figure 4.
Are the voltages within 10% of each other?
- Yes, continue with the next step.
- No, inform the customer that the voltages are not correct. Do
not continue until the voltages are correct.
Figure 1. Three-phase delta mainline
power connector at DC-UPS end
Figure 2. Single phase
mainline power connector
Figure 3. Three phase mainline power connector
(top exit line cord feature)
Figure 4. Single phase mainline power
connector (top exit line cord feature)
- Locate the agency label on the inside
front left wall of the rack, halfway from the top (near the front
of PPS E2). See Figure 5.
The label will include the voltage, current, and phase specifications
for this model. Measure the voltage between each pair of voltage
pins (for three phase A to B , B to C ,
and C to A ; or for single phase A to B )
on each mainline power cable. Refer to Figure 1 or Figure 2. For the top exit line
cord feature, refer to Figure 3 and Figure 4. Verify
that the customer AC input voltage that you just measured matches
the machine input voltage information on the label.
Does
the voltage measured match the voltage on the DS8000® information
label?
Figure 5. Agency label example (2421-941,
3-phase), with location