Dual DRd12 with Cross-Bussed ACP
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Installation Procedure
1:
Install the AX12X enclosure between two DRd12 enclosures as instructed in
2:
Run the interconnect cable through the conduit entries from one DRd12, through the AX12X,
and into the other DRd12.
• Ensure that the end of the interconnect cable labeled "Rack 1" is in the DRd enclosure with
the ACP and the end labeled "Rack 2" is in the DRd enclosure without the ACP.
3:
Connect the end of the interconnect cable labeled "Rack 1" to the "Dual Racks" receptacle on
the Right I/O board in the enclosure with the ACP (F in the illustration on the previous page).
4:
Connect the end of the interconnect cable labeled "Rack 2" to the "Dual Racks" receptacle on
the Right I/O board in the enclosure without the ACP (F in the illustration on the previous page).
5:
Connect the ground wire with the ring terminal to the enclosure without the ACP.
a: Remove one of the four screws securing the Right I/O board to the enclosure.
b: Insert the screw through the ring terminal and replace the screw.
6:
Final Installation and Power Up
WARNING:
RISK OF ELECTRIC SHOCK! Failure to disconnect all power to the panel before
working inside could result in serious injury or death.
De-energize main feed to the dimmer rack and follow appropriate Lockout/
Tagout procedures as mandated by NFPA 70E. It is important to note that
electrical equipment such as dimmer racks can present an arc flash hazard if
improperly serviced. This is due to the high amounts of short-circuit current
available on the electrical supply to this equipment. Any work must comply
with OSHA Safe Working Practices.
WARNING:
RISK OF ELECTRIC SHOCK! Auxiliary enclosures installed without an accessible
power disconnect device cannot be serviced or operated safely. All enclosure
terminations must be done with the power off. In some instances, this device
may be an auxiliary enclosure with a main circuit breaker. Follow all local
codes and restrictions.
Note:
Installing the interconnect cable incorrectly may result in incorrect operation.
