IEC 62877-1 pdf free download

IEC 62877-1 pdf free download.Electrolyte and water for vented lead acid accumulators – Part 1: Requirements for electrolyte.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
lEG 62877-2, Electrolyte and water for vented lead acid accumulators — Part 2: Requirements for water
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply
3.1
electrolyte
diluted sulfuric acid (H2S04) for lead-acid accumulators
Note 1 to entry: The electrolyte is prepared by mixing concentrated sulfuric acid or sulfuric acid with high density of d – 1.30 kg/I and purified water to achieve the density values specified by the battery manufacturer or specified in standards related to the type and battery design in question for a defined state of charge. Its purity meet the requirements laid down in Table 3.
Note 2 to entry: Concentrated sulfuric acid is a colorless, highly corrosive and etching liquid with a density 1,84 kg/I.
3.2
water
purified water (H20) used for the preparation of electrolyte for batteries and for the replacement (topping up) of water loss in the operating electrolyte due to decomposition of water by overcharging and evaporation
Note 1 to entry Purified water meet the requirements specified in IEC 62877-2.
3.3
filling electrolyte
diluted sulfuric acid to be used for the first filling of batteries or for the replacement of contaminated operating electrolyte
3.4
first filling
original filling of a battery carried out by the battery manufacturer or the user in accordance with the applicable manufacturer’s instructions
3.5
operating electrolyte
electrolyte present in the battery following the first filling
Note 1 to entry: The density values and the degree of purity of the operating electrolyte may deviate from the values of the filling electrolyte due to impurity input from replenishment by water and to elution from e.g. separators. active material and electrode grids.
3.6
electrolyte density
value for the mass per volume expressed in kg/I
Note 1 to entry: The density varies with the batterys state of charge. the electrolyte volume variation due to water loss and the temperature.
3.7
specified density
density of the battery to be stated by the battery manufacturer valid at the maximum electrolyte level (see 3.10 ) at full state of charge of the battery at the reference temperature
Note 1 to entry: It is related to the application and design of the battery.
3.8
reference temperature for analytical results
reference temperature for analytical results of electrolyte impurities which is 25 °C ± 1 °C
Note 1 to entry: Density values measured at temperatures deviating from this reference temperature are adjusted accordingly.
3.9
measurement of the electrolyte density
measurement is carried out by densimeters, in which areometers (hydrometers) are used, or by electronic devices based on e.g. on ultrasonic measurements
Note 1 to entry: The accuracy of the instrument is better than 0,001 kg/I.
3.10
electrolyte level
position of the electrolyte surface in the cell/battery, where the recommended tidal movements are indicated by maximum and minimum electrolyte level marks to assist in water replenishment
Note 1 to entry: Water replenishment should take place in a fully charged state to the upper limit, to avoid over topping and electrolyte loss.
3.11
reference temperature
value specified by the battery manufacturer for the indication of properties, such as the nominal electrolyte density, the maximum electrolyte level and the nominal capacity of the battery
Note 1 to entry: The value of the nominal temperature for the indication of parameters may differ depending on the battery type and application.
3.12
electrolyte additives
compounds which, added to the electrolyte, improve certain properties of the accumulator.
IEC 62877-1  pdf download.