Delta Modulon DPH Series User Manual page 95

NOTE:
1. Table 5-4
number of batteries, please contact Delta service personnel for protective
device's current and voltage.
2. The above-mentioned DC circuit breaker, DC isolated switch and DC fuse
are optional. If you want to buy any of them, please contact Delta service
personnel.
3. If you need to parallel multiple units of external battery cabinets, please
contact Delta service personnel for relevant information.
4. To extend backup time, you can parallel up to eight units of external battery
cabinets to the UPS. Please note that (1) the number of batteries in each of
the parallel external battery cabinets and (2) the cable length of each string
of the batteries must be the same.
Please note that only authorized Delta engineers or service personnel can perform wir-
ing or you can perform wiring only under the supervision of authorized Delta engineers
or service personnel. To connect the external battery cabinet(s) to the UPS, please refer
to:
Figure 5-8: Wiring Terminals_ AC Input, Bypass Input & UPS Output
Figure 5-9: Wiring Terminals_ Battery Input
Figure 5-10: Wiring Terminals_ Grounding
Figure 5-14: Parallel Units Single Input Wiring Diagram
Figure 5-16: Parallel Units Dual Input Wiring Diagram
Table 5-3: Wiring Terminals & Wiring Information
Table 5-4: External Battery Cabinet's Protective Device (Default Battery Q'ty:
12Vdc × 40 PCS)
For the external battery cabinet's grounding information, please refer to:
Figure 5-13: Grounding Diagram_ Single Unit
Figure 5-15: Grounding Diagram_ Parallel Units
The external battery cabinet's protective device must be planned and designed by
device, there are two selections, which are (1) a 4-pole DC circuit breaker or DC iso-
lated switch connected in series with a DC fuse and (2) a 3-pole DC circuit breaker or
DC isolated switch connected in series with a DC fuse. For relevant values, please refer
to Table 5-4. When choosing the external battery cabinet's protective device, please
take the following factors into consideration: (1) over current between the UPS and bat-
tery circuit, (2) short circuit, (3) wire/ cable materials, and (4) local electrical regulations.
If you have any questions about the external battery cabinet's protective device, please
contact Delta service personnel. For installation methods of the external battery cabi-
net's protective device, please refer to Figure 5-18 ~ Figure 5-19.
5-23
5 Installation and Wiring