Single Input (Single Unit) - Delta DPS Series User Manual

No.
Manual Bypass Breaker or Switch
3 (Q3) including L1/ L2/ L3/ N
terminals
Output Breaker or Switch (Q4)
4
including L1/ L2/ L3/ N terminals
5
PE (protective earth) Terminal
6
GND (ground) Terminals
NOTE:
1
1. * All breakers, switches and terminals listed in the above 'Item' column must
be installed in the external maintenance bypass cabinet (user-supplied). Refer
to 1.2 Connection Warnings for relevant information.
2
2. * The PE (protective earth) connection ensures that all exposed conductive
surfaces are at the same electric potential as the Earth to avoid the risk of
electrical shock due to leakage current or an insulation fault.

5.4.3.1 Single Input (Single Unit)

When there is only one AC power source, single unit wiring procedures are as follows.
Step 1
The UPS allows cable routing from the top or bottom. Please leave adequate space above
or below the UPS.
Step 2
Open the I/O cabinet's front door and you will see the 800kVA UPS's wiring terminals shown
in Figure 2-9 ~ Figure 2-10 and 1000/ 1200kVA UPS's wiring terminals shown in Figure 2-
13 ~ Figure 2-14.
Ultron DPS Series
1
Item* Function
• Single Input:
Connects to the main AC source.
• Dual Input:
Connects to the bypass AC source.
Connects to the critical loads.
Protective earthing for protection against
electrical shock in case of fault*
terminal must be connected to the main
earth.
The terminals are used to ground the
devices, which are associated with UPS
operation.
66
2
. The