UL-1778:2011 pdf free download – Underwriters Laboratories Inc. Standard for Safety Uninterruptible Power Systems.
1.7.15 Replaceable batteries
Additional subcla uses:
1.7.15.101 Batteries replaceable by SERVICE PERSONNEL
Battery cabinets or compartments shall be provided with the following, clearly legible, information, fixed upon the battery cabinet or compartment of stationary batteries, in such a position that it can be clearly seen by SERVICE PERSONNEL before accessing the battery compartment:
a) battery type or catalogue number and number of batteries;
b) nominal voltage of total battery string;
c) nominal capacity of total battery string;
d) a caution label denoting an energy and chemical hazard and reference to the maintenance handling and disposal instructions for the safety of SERVICE PERSONNEL; and
e) a label indicating the battery type.
1.7.15.102 Instructions
1.7.15.102.1 In the case of an internally mounted battery,
a) instructions shall carry sufficient information to enable the replacement of the battery with a suitable recommended type;
b) safety instructions to allow access by SERVICE PERSONNEL shall be stated in the installation! service handbook; and
c) if batteries are to be installed by SERVICE PERSONNEL, instructions for interconnections, including terminal torque, shall be provided.
1.7.15.102.2 In the case of an externally mounted battery,
a) installation instructions shall state voltage, ampere-hour rating, charging regime, and method of protection required on installation to coordinate with us protective devices, where the battery is not provided by the UPS manufacturer; and
b) instructions for the battery cells shall be provided by the battery manufacturer.
1 .7.15.103 External battery cabinets
External battery cabinets supplied with the ui’s shall have adequate installation instructions to define cable sizes for connection to the ui’s. Installation instructions for the battery shall be provided by the ui’s battery manufacturer.
1 .7.15.104 Replacement of batteries located in an OPERATOR ACCESS AREA The batteries shall be of a sealed or valve-regulated type.
Reverse connection of the terminals shall be prevented if reverse connection could result in a hazard within the meaning of this Standard.
The OPERATOR manual shall include the following instructions:
When replacing batteries, replace with the same number of the following battery: ____________(the blank space shall be filled with the manufacturer’s name and model number of the batteries used with the equipment).
CAUTION: Risk of Energy Hazard, ____ V, ______ Ampere-hour battery. Before replacing batteries, remove conductive jewelry such as chains, wrist watches, and rings. High energy through conductive materials could cause severe burns.
CAUTION: Do not dispose of batteries in a fire. The batteries may explode.
CAUTION: Do not open or mutilate batteries. Released material is harmful to the skin and eyes. It may be toxic.
1.7.15.105 Replacement of batteries located in a SERVICE ACCESS AREA
Bare parts that involve an energy hazard shall be located, enclosed, guarded, or provided with a barrier to take into account the unintentional bridging by conductive materials that might be present during service operations.
Bare parts operating at a HAZARDOUS VOLTAGE level shall be located or guarded such that unintentional contact with such parts is unlikely during servicing operations involving other parts of the equipment.
The service manual shall include the following instructions:
Servicing of batteries should be performed or supervised by personnel knowledgeable about batteries and the required precautions.
When replacing batteries, replace with the same type and number of batteries or battery packs.