GE Industrial Solutions GE Zenith Series DPB - Manual (Page 47)

39 Installation & Operation Manual, GE Series DPB Busway
March 25, 2013, Rev 0 GE Confidential
Series DPB Busway Installation & Operation Manual
Option 3 - TAP OFF BOX AND END FEED MONITORING CONCURRENTLY
SAFETY WARNING
CAUTION
SEVERE INJURY OR DEATH CAN RESULT FROM ELECTRICAL SHOCK DURING CONTACT WITH
HIGH VOLTAGE CONDUCTORS, MONITORING PCBS, OR RELATED EQUIPMENT. DISCONNECT
AND LOCK OUT ALL POWER SOURCES DURING INSTALLATION AND SERVICE.
END FEED BOX COMPONENTS
The Option 3 configuration (Figure 34) combines monitoring of the busway power input and power monitoring of the branch
circuit loads connected to each BCMS-Equipped Tap Off Box.
The End Feed Box contains the main data acquisition system consisting of an Accumulator PCB, a Power Inserter PCB, and
an Input PM PCB (Figure 35). The power disconnects for the circuit boards are the readily accessible fuses mounted on the
outside of the End Feed Box. Ingress to these circuit boards is by removing the cover on the restricted-access Bus Monitor
Housing.
This should only be done by a qualified electrical technician as removing the cover will expose high voltage
connections on the circuit boards. If the system logic PCBs have been purchased separately, the PCBs must be mounted
in an access-restricted, grounded metal box and a readily accessible appropriate upstream power disconnect must be
provided. For details on the circuit board parameters reference Appendix A: Tap Off Box Monitoring Specifications and
Appendix B: End Feed (Input PM Board) Monitoring Specifications..
Bus Monitor Fuse Access
Power Inserter PCB
Input PM PCB
Accumulator Board
Bus Monitor Module (Cover
Removed)
Communications Cable
End Feed
Tap Off Box Tap Off Box Tap Off Box Tap Off Box
Busrail
Figure 34 - Option 3 - End Feed Power and Tap Off Branch Circuits Monitoring
Figure 35 - Option 3 - End Feed Box Monitoring Components