IEEE 937-2007 pdf download IEEE Recommended Practice for Installation and Maintenance of Lead-Acid Batteries for Photovoltaic (PV) Systems
1.1 Scope
This recommended practice provides design considerations and procedures for storage, location, mountingventilation. assembly. and maintenance of lead-acid secondary batteries for photovoltaic (PV) poweisystems. Safety precautions and instrumentation considerations are also included.
While this document gives general recommended practices, battery manufacturers may provide specificinstructions for battery installation and maintenance.
1.2 Purpose
This recommended practice is meant to assist lead-acid battery users to properly store, install, and maintainlead-acid batteries used in PV systems.
2. Definitions
For the purposes of this recommended practice. the following terms and definitions apply. TheAuthoritative Dictionary of IEEE Standards (B1′ should be referenced for terms not defined in this clause
2.1 dry-charged cell: A cell that has been assembled without electrolyte, using plates that have beencharged and dried, requiring only to be filled with electrolyte to become an active cell. The cells are sealedby the manufacturer to prevent oxidation. Typically done for ease of shipping or storage or both.
3.Precautions
Batteries are potentially hazardous, and proper precautions must be observed in their handling andinstallation. This recommended practice does not purport to address all of the safety concerns associatedwith its use. It is the responsibility of the user of this recommended practice to establish appropriate safetyand health practices and to determine the applicability of regulatory limitations prior to use. Thescinstructions assume a certain level of competence by the installer/user, Applicable practices and codescontain relevant information and should be consulted for safe handling, installation, testing, andmaintenance of batteries. Applicable state and local codes must be followed. Work on batteries shall onlybe performed by knowledgeable personnel with proper, safe tools and protective equipment.
3.1 Protective equipment
The following safety equipment for handling of the battery and protection of personnel shall be available’a) Safety glasses with side shields, goggles, and face shield, as appropriate
b) Acid-resistant gloves
Protective aprons and safety shoesc)
d) Portable or stationary water facilities for rinsing eyes and skin in case of contact with acidelectrolyte
e) Class C fire extinguisher
)An acid-neutralizing agent (eg., bicarbonate of soda mixed with approximately 0.1 kg/L ofwater) to neutralize any acid spillage
Adequately insulated toolsg
h) Lifting devices of adequate capacity, when required
NOTE 1–Some battery manufacturers do not recommend the use of CO, fire extinguishers due to the potential forthermal shock.2
NOTE 2–The removal and/or neutralization of an acid spill may result in production of a hazardous waste. The usershould comply with appropriate governmental regulations.
NOTE 3-Battery personnel shall conform to local safety requirements.
3.2 Procedures
The following safety procedures shall be followed prior to and during installation:
a) Use caution when working on batteries since they present a shock hazard.
b) Prohibit smoking and open flame, and reduce the potential for arcing in the immediate vicinityof the battery.
c) Provide adequate ventilation and follow the manufacturer’s recommendations during charging
Ensure unobstructed egress from the battery work area
Avoid the wearing of metallic objects. such as iewelry, while working on the batterye)
Ensure that the work area is suitably illuminated.
IEEE 937-2007 pdf download
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