Page 75 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

• Strength of electrolyte depends on charging
• Full charge......1.26
• 50% charge.....1.20
• Discharge........1.15
HIGH RATE DISCHARGE CELL TESTER

It is used to find out the internal condition of the cell. It consist of wooden handle having two pointed metal strips
parallel to each other B/W them is provided a load of low resistance. A low range voltmeter (0-3V) is connected
parallel.

• A fully charged cell in good condition reads in the range of full charge

• A sulphated or old battery shows the discharge reading.

Battery tester
The meter shows three colours according to battery conditions
• Red-fully discharged

• Yellow-half charge
• Green-fully charged
The voltage of each cell is measured with a MC Voltmeter
• Fully charged cell……..(2.5-2.6V)

• Fully discharged cell….(1.8-1.6V)
Nickel iron (Ni- Fe) CELL / Alkaline cell
Construction of Nickel iron cellPositive plate, Negative plate,
Electrolyte, Separator.

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CITS : Power - Electrician & Wireman - Lesson 13-19