IEC 62485-2:2010 pdf – Safety requirements for secondary batteries and battery installations -Part 2: Stationary batteries
IEC 62485-2:2010 pdf – Safety requirements for secondary batteries and battery installations -Part 2: Stationary batteries.
8.3.2 Eye contact
In the event of accidental contact with electrolyte, the eyes shall be immediately flooded with large quantities of water for an extended period of time. In all cases, immediate medical attention shall be obtained.
8.3.3 Skin contact
In the event of accidental skin contact with electrolyte, the affected parts shall be washed with large quantities of water or with adequate neutralising solutions, If irritation of skin persists medical attention shall be obtained.
8.4 Battery accessories and maintenance tools
Materials used for battery accessories, battery stands or enclosures, and components inside battery rooms shall be resistant to or protected from the chemical effects of the electrolyte.
In the event of electrolyte spillage, the liquids shall be removed promptly from all surfaces with absorbing and neutralising material,
Maintenance tools such as funnels, hydrometers, thermometers which come in contact with electrolyte shall be dedicated either to the lead-acid or NiCd-batteries and shall not be used for any other purpose.
9 AccommodatIon, housing
Batteries shall be housed in protected accommodations. If required, electrical accommodation or locked electrical accommodation shall be provided.
The following kinds of accommodation can be chosen:
separate rooms for batteries in buildings:
specially separated areas in electrical accommodation:
– cabinets or enclosures inside or outside buildings; battery compartments in appliances.
The following factors shall be taken into consideration when selecting the accommodation:
a) protection from external hazard, e.g. fire, water, shock, vibration, vermin;
b) protection from hazards generated by the battery, e.g. high voltage, explosion hazards. electrolyte hazards, corrosion and ground short effects;
c) protection from access by unauthorised personnel;
d) protection from extreme environmental influences e.g. temperature, humidity, airborne contamination.
9.2 Specific requirements for separate battery rooms
Depending on type and size of the batteries, the following requirements shall apply when using a separate battery room.
a) The floor shall be designed to take the load of the battery. Reserve margin shall be taken Into consideration for future extensjon
b) The electrical installation shall be carried out according to the standards on erection of electrical installations in buildings.
C) If access is restricted to authorised personnel, the doors shall be lockable and of anti-panic type. The anti-panic door shell swing outwards, The doors shall only be lockable from the outside. From the inside, the door shall easily be opened by means of an emergency mechanism.
d) When using vented type batteries, the floor shall be impermeable and chemically resistant to the electrolyte or the battery cells shall be placed in suitable trays.
e) The ventilation shall be in accordance to 7,2, The ventilated air shall be exhausted into the atmosphere outside the building.
t) The floor area for a person standing within arm’s reach of the battery (see IEC 603644-41 and equal to 1,25 m) shall be electrostatic dissipative in order to prevent electrostatic charge accumulation. The resistance to a groundable point measured according to IEC 61340-4-1 shall be less than 10 Mti. Personnel shall wear anti-static footwear when carrying out maintenance work on the battery installation.
Conversely the floor shall offer sufficieni electrical resistance R for personnel safety. Therefore the resistance of the floor to a groundable point when measured in accordance with IEC 61340-4-1 shall be
— for nominal voltage of the battery 500 V: 50 kL R 10 M
— for nominal voltage of the battery> 500 V: 100 kU R 10 Nt].
9.3 Specific requirements for the specially separated areas in rooms accommodating electrical equipment
All the requirements for the accommodation of battenes as described in 9.2 shall be fulfilled and in addition the following measures shall be taken.
a) Where a cell failure may cause spillage of electrolyte, the spillage shall be contained e.g. by use of a retaining trays adequate to contain the electrolyte of at least one cell or monobloc battery.
b) Warning and barring signs according to 11.1 shall be affixed close to the battery.
c) Measures for protection against electric shock according to Clause 4 and provision against explosion hazards according to Clause 7 shall be taken,
d) Notwithstanding central air conditioning in the building, the ventilation requirements according to 7.2 shall be fulfilled. The minimum fresh air-supply shall correspond with the ventilation air flow Q.
9.4 Battery enclosures
A battery enclosure may be selected for the following reasons:
— to avoid routing cables from another battery location:
— to provide a functionally complete Item of equipment in one enclosure; for protechon against external hazards:
– for protection from hazards generated by the battery:
– for protection from access of unauthorised personnel:
— for protection from external environmental influences.