CSA C282:2019 pdf download.Emergency electrical power supply for buildings
1.1 This Standard applies to the design, installation, operation, maintenance, and testing of emergency generators and associated equipment for providing an emergency electrical power supply to electrical loads
a) in buildings and facilities when the normal power supply fails and an emergency electrical power supply is required by the National Building Code of Canada (NBCC); and
b) of essential electrical systems, where emergency generators are intended for use in health care facilities (HCFs) in accordance with Clause 6 of CSA Z32.
Notes:
1) For guidelines on emergency electrical power supply for life-support equipment, see Annex A.
2) In this Standard, the term "building" also includes facilities.
3) Normative provisions of this Standard are not limited to the installations where an emergency generator is used as the NBCC required emergency power supply source to the "Iife safety equipment".
4) For guidelines on the use of emergency electrical power supply equipment for purposes beyond the provisions of Clause 1.1, see Annex D
5) It is intended by the scope of this Standard that equipment other than "life safety equipment”could be connected to the emergency generator (see Clause 6.4. 1).
6) For electrical power supply systems designed and installed to operate for purposes other than those specified in Clauses 1.1, the electrical power supply system should meet the requirements of this Standard, where practical, and in conjunction with the guidelines of Annex E.
Continuous power (COP)一the maximum power that the generating set is capable of delivering continuously while supplying a constant electrical load when operated for an unlimited number of hours per year under the agreed operating conditions with the maintenance intervals and procedures being carried out as prescribed by the manufacturer.
Battery, lead-acid
Valve-regulated (VRLA)一a lead-acid battery consisting of sealed cells furnished with a valve that opens to vent the battery whenever the internal pressure of the battery exceeds the ambient pressure by a set amount.
Note: In VRLA batteries, the liquid electrolyte in the cells is immobilized in an absorptive glass mat (AGM cells or batteries) or by the addition of a gelling agent (ge/ cells or gelled batteries).
Vented (flooded)一a lead-acid battery consisting of cells that have electrodes immersed in liquid electrolyte.
Note: Flooded lead- acid batteries might have a provision for the user to add water to the cell and are equipped with a flame arresting vent that permits the escape of hydrogen and oxygen gases from the cell in a diffused manner such that a spark or other ignition source outside the cell will not ignite the gases inside the cell.CSA C282 pdf download.