Specifications

RT9 Powershelf Rectifier Technologies
158-1806-01.doc
13 2-Mar-06
3.3.3 3 phase star – individual protected external feeds
Remove the link connecting the active terminals “A” together. Connect one phase wire per
“A” terminal. Connect the neutral wires to the common neutral terminals.
Figure 3.6
3.3.4 3 phase delta – individual protected external feeds
Phase-to-phase (208VAC) connections require that the AC terminal blocks for the neutral
be replaced with individual active line terminals. Then for each rectifier, the two AC lines
can be wired to the appropriate phases. This configuration needs to be specially ordered
to ensure that the correct number of terminal blocks is loaded. The system will be shipped
with links in the active terminal blocks to configure the system as single phase (but for
phase-to-phase connection). Note that double fused versions of RT9 must be ordered.
To wire as 3 phase delta, remove the links connecting the active terminals together, and
connect each phase-to-phase pair of wires to a set of “A” and “C” terminals. Phase rotation
is not important. Double pole circuit breakers are required.
Figure 3.7