Vertiv NetSure 710 Series, Installation Manual

Page: 40 / 142

Vertiv
| NetSure 710 Series Installation Manual (IM581127000) | Rev. U 40
Installing GJ/218 Circuit Breakers
Refer to the following procedure and install appropriately sized GJ/218 circuit breakers into the proper
mounting positions in the distribution cabinet.
Refer to SAG581127000 for any restrictions.
Procedure
NOTE!
Refer to
Figure 18
as this procedure is performed.
1. Locate the appropriate circuit breaker mounting kit ordered with the circuit breaker. The circuit breaker
mounting kit contains installation hardware, an alarm jumper, a shunt jumper (if applicable), a busbar (for
2-pole, 3-pole, and 4-pole circuit breakers), and a circuit breaker guard. Refer to SAG581127000 for part
numbers of the circuit breaker mounting kits.
2. Open the distribution cabinet’s front door by turning the latch in the counterclockwise position.
3. Ensure that the circuit breaker is in the OFF position, and is of the correct rating and type (electrical
trip/mechanical trip or electrical trip only). Apply anti-oxidizing compound to busbar mating surfaces on
the distribution panel and the circuit breaker. Orient the circuit breaker over its mounting location.
a) Attach the alarm jumper connectors to the back of the circuit breaker, then plug the other end of
the alarm jumper into its corresponding connector. See
Figure 18 .
b) Shunted Breakers Only: Attach the shunt jumper connectors to the back of the circuit breaker,
then route the jumper through the hole in the distribution panel. See
Figure 18 .
DANGER! The bolts being installed in the following step may be at system potential. Use insulated
tools.
4. Install the circuit breaker into its mounting position and secure with the provided hardware. Torque to
60 in-lbs.
2-Pole, 3-Pole, and 4- Pole Circuit Breakers Only: Also install the mounting kit supplied shorting
busbar as shown in
Figure 18 .
5. Install the circuit breaker guard and label (refer to Figure 18 ).
6. Shunted Breakers Only: Route and connect shunt leads to the SM-DU+ and Shunt Interface Assembly.
NOTE!
Refer to “Optional SM-DU+ and Shunt Interface Board” on page 82 for proper wiring procedure.
Leads must be terminated before switching breaker ON to avoid circuit fault.
7. Record all circuit breaker sizes on the label provided on the shield.
8. Close the distribution cabinet's front door. Turn the latch clockwise to secure the door.