Usage Warnings - Delta Modulon DPH Series User Manual

4. Each protective device could be a breaker or a fuse. For the protective device's
rating current, please refer to the table below.
200kVA
5. Each protective device should have the functions of over current protection, short
circuit protection, insulating protection and shunt trip feature. Please refer to the
table below for the UPS rated short-time withstand current (Icw).
200kVA
6. When selecting the protective devices, please take each power cable's current
capacity and the system's overload capacity (please refer to Appendix 1: Technical
upstream protective devices must be equal to or larger than the capacity of the
UPS's input protective devices.
7. Due to abnormalities in the UPS, the fault current may reach 20kA. At the time, the
UPS's internal semi-conductor fuses will take 8 ~ 10 ms to open. Thus, the reaction
time of the upstream*
able to keep supplying power to the loads.
8. If the UPS is supplied by a power source whose neutral is grounded, each protective
device must be a 3-pole type. If the UPS is supplied by a power source whose
neutral is not grounded, each protective device must be a 4-pole type.
9. The recommended electrical rating of the input, output and backfeed protective
devices are as follows. Application of the protective devices shall be in accordance
with local installation codes.
200kVA
690V/ 400A
1.3

Usage Warnings

Before installation, wiring and working on the UPS's internal circuits, please completely
300kVA
400A 600A
300kVA
10kA 10kA
) into consideration. Besides, the short-circuit capacity of the
1
protective devices must be more than 10 ms so that the fuses
NOTE:
1
* For dual input application, this refers to the bypass upstream.
300kVA
690V/ 600A
1
400kVA
800A
400kVA
12.12kA
400kVA
690V/ 800A
1-3
Important Safety Instructions
500kVA 600kVA
1000A 1250A
500kVA 600kVA
15.15kA 18.18kA
500kVA 600kVA
690V/ 1000A 690V/ 1250A