Delta Modulon DPH Series User Manual page 11

4. Each protective device could be a breaker or a fuse. For the protective device's
rating current, please refer to the table below.
100kVA
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).
100kVA
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.
100kVA
690V/ 200A
1.3 Usage Warnings
Before installation, wiring and working on the UPS's internal circuits, please completely
150kVA
200A 300A
150kVA
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.
150kVA
690V/ 300A
1
200kVA
400A
200kVA
10kA
200kVA
690V/ 400A
1-3
Important Safety Instructions
250kVA 300kVA
500A 630A
250kVA 300kVA
10kA 10kA
250kVA 300kVA
690V/ 500A 690V/ 600A