UPS2000-G-(3 kVA-20 kVA)-V2
User Manual (Two Live Wires)
2 Quick Introduction
Issue 07 (2019-12-19)
Copyright © Huawei Technologies Co., Ltd.
26
Figure 2-7
Installing a magnetic ring (numbered 1) on the general PE cable
(1) Magnetic rings 1
(2) Magnetic rings 2
(3) Magnetic rings 3
Perform the following operations in a parallel system using the TN-C power distribution system:
Short-circuit battery terminals N in the parallel system.
It is recommended that you connect AC loads and battery packs only to the UPS PE terminal.
If you have directly grounded AC loads and battery packs and connected them to the UPS PE
terminal, install magnetic rings 2 and 3 on the PE3, PE4, PE5, and PE6 ground cables. You need to
purchase magnetic rings 2 and 3.
The recommended type for magnetic rings 1, 2, and 3 is DN85Hx4 or E2Fx4.
Table 2-3
Specifications of magnetic rings from three vendors
Vendor
Magnetic Ring
DMEGC
R10K
TDK
HS10
TDG
TS10