Owner''s Manual Extended-Run Battery Cabin
Battery cabinets contain multiple 12V DC batteries connected in series for higher voltages. Each battery cabinet contains 4 shelves with 10 individual batteries (maximum) per shelf. Hinged
If your original battery is rated at 3.6v, then you can use a replacement battery with a voltage up to 4.6v and nothing higher.
The total battery string voltage in a 9355 20-30 kVA UPS is 216V (18 batteries, where is each battery is 12V nominal). Two strings fit in each battery shelf of the 9355 20-30 kVA UPS. The two-row tray configuration that is being replaced holds 18 batteries, connected to make one circuit.
Employers must consider exposure to these hazards when developing safe work practices and selecting personal protective equipment (PPE). That is where Article 320, Safety Requirements Related to Batteries and Battery Rooms comes in.
Working around batteries can expose an employee to both electrical shock and arc flash hazards. A person's body might react to contact with dc voltage differently than from contact with ac voltage. Batteries can also expose employees to the hazards associated with the chemical electrolyte used in batteries.
.PDF includes complete article with source references.
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