Kohler PowerWAVE 8000DPA RI (S2) Series, Руководство пользователя, Страница: 43 / 88

TS_616_08 PW8000DPA ST (S2) User Manual 21/4/22
35
3: Installation Planning
6.
3.3 Electrical and cabling planning
3.3.1 General requirements
It is the customer’s responsibility to design the UPS input and load distribution circuits, and provide all the external fuses,
isolators and cables that are required to connect the UPS input and output power supplies. The information in this section
should help with the preparation and planning of the UPS power cabling.
The UPS bypass mains and input mains terminals should be connected to the utility mains supply through a LV mains
switchboard that contains suitable circuit breakers or fused isolators. These are necessary to provide a means of isolating
the UPS from the mains supplies when required and also provide suitable overload protection. Similarly, the UPS output
supply terminals should be connected to the load equipment via a fused output distribution panel.
Input neutral grounding
A permanently connected input neutral is required to enable the rectifier to operate correctly and allow the UPS to function
properly. The input neutral must also be grounded to ensure correct operation when the UPS is running on battery.
Figure 3.3 Input neutral grounding
Key Point: When planning a UPS installation that incorporates external batteries it is important that the battery
enclosure installation requirements (access clearance, ventilation requirements, weight etc.) are accounted for
in the planning process – if a non-Kohler Uninterruptible Power Ltd battery cabinet is to be used, these details
must be obtained from the battery cabinet supplier.
IMPORTANT NOTE:
The UPS does not contain internal fuse protection for the bypass mains or input mains supplies.
It is the customer’s responsibility to ensure that external supply fuses (or other protective devices) are fitted and
correctly sized to provide the recommended level of UPS protection. We also recommend that a spare set of fuses are
held locally to ensure they are readily available if required.
Key Point: As the input neutral must be unswitched and connected to the UPS at all times, a 4-pole input
switch or isolator must not be used at the LV mains switchboard on a TN-S system.
0V
230V
UPS