2. Grounding of UPS body part The APC UPS body, its casing, battery cabinet (rack), etc. need to be connected to the electrical grounding device using grounding wires.
In such cases, integrity of neutral is ensured by connecting the UPS neutral solidly to the neutral of the source which is already connected as an effective TNS earthing system. In
Figure 2 Cabinet arrangement—Liebert NX matching battery cabinets . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3 Grounding diagram—Three-wire single-module systems. . . . . . . . . .
The UPS system and the battery cabinet operates with mains, batteries or bypass power that carry high currents and voltages. The properly installed UPS system and battery
For multiple battery cabinets incorporating battery disconnects, the cabinets are bolted together, forming a single lineup with the UPS.
When batteries are not installed in a cabinet, i.e. generally in a special room, the measures presented at the end of this chapter should be implemented. Note: The TN system
The UPS system shall consist of rectifier/charger, batteries, inverter, static bypass, manual bypass, protective devices and accessories that automatically provide continuous
For multiple battery cabinets incorporating battery disconnects, the cabinets are bolted together, forming a single lineup with the UPS. The cabinet grounds are inherently
The bypass cabinet is an important part of a UPS system, and proper grounding of the bypass cabinet is essential for the overall safety and reliability of the UPS installation.
Positive grid corrosion has been the most common end-of-life factor for UPS batteries, which is a result of the normal aging process due to UPS battery chemistry and
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