Vertiv™ NetSure™ 512
NGBB
-48 VDC Power System User Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
27
Replacing a Bullet Nose Fuseholder
Procedure
NOTE!
Refer to Figure 4.2 as this procedure is performed.
1.
Remove the fuse carrier from the mounted fuseholder body by pulling it straight out. Hold the fuseholder body while you pull
the fuse carrier from the body.
2.
Gently rock the defective fuseholder up and down while pulling firmly outward until the fuseholder is free from the
distribution panel.
3.
Orient the fuseholder as shown in Figure 4.2. Insert the terminals on the rear of the fuseholder into their corresponding
sockets on the distribution panel. Ensure the alarm contact on the back of the fuseholder makes contact with the alarm
terminal on the spring strip. Push fuseholder in firmly until fully seated in the distribution panel.
4.
Push the fuse carrier securely back into the mounted fuseholder body. Note that a polarizing key on the bottom of the
carrier prevents the carrier from being inserted upside down.
5.
Verify no Fuse Alarms are active.
Replacing a Bullet Nose Circuit Breaker
Procedure
NOTE!
Refer to Figure 4.3 as this procedure is performed.
1.
Operate the defective circuit breaker to the OFF position.
2.
Gently rock the defective circuit breaker up and down while pulling firmly outward until the breaker is free from the
distribution panel.
3.
Ensure that the circuit breaker is in the OFF position, and is of the correct rating.
4.
Orient the circuit breaker as shown in Figure 4.3.
5.
Insert the terminals on the rear of the circuit breaker into their corresponding sockets on the distribution panel. Ensure the
alarm contact on the back of the circuit breaker makes contact with the alarm terminal on the spring strip. Push distribution
device in firmly until fully seated in the distribution panel.
6.
Operate the replacement circuit breaker to the ON position.
7.
Verify no Circuit Breaker Alarms are active.
