Single Input/ Dual Input Modification - Delta Ultron HPH Series User Manual

5.5.2 Single Input/ Dual Input Modification

WARNING:
1. Only authorized Delta engineers or service personnel can modify single input/ dual
input setup.
2. For dual input, the main AC source's Neutral (mN) must be connected with the bypass
source's Neutral (bN).
The UPS default setting is single input. If you want to modify it into dual input, please follow the
following steps.
1. Remove the panels shown in the figure below.
2. After removing the panels, please follow the below method to modify the UPS from single input
into dual input.
Remove the copper bars that connect the main input terminal block and bypass terminal
block (mL1 & bL1, mL2 & bL2, mL3 & bL3) (please see Figure 5-6). When wiring, connect
the main AC source's L1, L2 and L3 cables to the main input terminal block (mL1, mL2, mL3),
and connect the bypass source's L1, L2 and L3 cables to the bypass terminal block (bL1, bL2,
Ultron HPH Series
(Figure 5-5: Panel Location)
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