ISO 7176-25:2013 pdf download.Wheelchairs -Part 25:Batteries and chargers for powered wheel chairs.
ISO 7176-25 specifies requirements and test methods for batteries and battery chargers intended for use with electrically powered wheelchairs. It is applicable to lead acid batteries and chargers intended for use with them. Requirements for chargers are applicable to those with a rated input voltage not greater than 250 V a.c. and a nominal output voltage not greater than 36 V.
NOTE 1 Requirements for other battery chemistries (nickel and lithium based batteries) and suitable chargers are under consideration.
NOTE 2 Requirements regarding safety are applicable lo all battery chargers intended for use with electrically powered wheelchairs.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7176-8, Wheelchairs — Part 8: Requirements and test methods for static, impact and fatigue strengths
ISO 7176-2 1, Wheelchairs — Part 21: Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers
IEC 60254-1, Lead-acid traction batteries — Part 1: General requirements and methods of tests
IEC 60254-2, Lead-acid traction batteries — Part 2: Dimensions of cells and terminals and marking of polarity on cells
IEC 60335-2-29, Household and similar electrical appliances — Safety — Part 2-29: Particular requirements Ir buttery chargers
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 61076-2-103, Connectors for electronic equipment — Part 2-103: Circular connectors — Detail specification for a range of mnultipole connectors (type ‘XLR’)
SAE J1495, Test Procedure for Battery Flame Retardant Venting Systems
IATASpecial Provision A67
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 7176-26 and the following apply.
3.1
battery
one or more cells fitted with devices necessary for use, for example case, terminals, marking and protective devices
[SOURCE: 1EV 482-01-04]
3.2
lead acid battery
lead dioxide lead battery
secondary battery with an aqueous electrolyte based on dilute sulphuric acid, a positive electrode of lead dioxide and a negative electrode of lead
Note 1 to entry: Lead dioxide lead batteries are often called accumulators (deprecated).
[SOURCE: 1EV 482-05-01]
3.3
nominal voltage
suitable approximate value of the voltage used to designate or identify a cell, a battery or an electrochemical system
[SOURCE: 1EV 482-03-3]
Note ito entry: For lead acid batteries the nominal voltage is usually two volts multiplied by the number of cells.
3.4
rated d.c. output current
output current assigned to the battery charger by its manufacturer
3.5
rated d.c. output voltage
output voltage assigned to the battery charger by its manufacturer
3.6
rated input voltage
supply mains voltage assigned to the battery charger by its manufacturer
3.7
safety hazard
potential source of physical injury or damage to the health of the user, other persons or animals, or damage to the surroundings, arising directly from the battery charger or battery.ISO 7176-25 pdf download.