Summary electronics mechanic {study of UPS }

Learning outcome No. 11.4 UPS (Uninterrupted Power Supply)
AIM :- 1) Study of UPS
Objectives:-
• Connect battery stack to the UPS
• Identification of different controls and indicators on front panel of UPS
• identify the major sections and the components used in computer UPS
• Identify the various test points and verify the voltages on the UPS
Tools/Equipments/Instruments
• Trainees tool kit - 1 set. • Safety gloves - 1 No. • Digital multimeter with probes - 1
No. • Single phase UPS, 6KVA - 1 No. • Double ended spanners - as reqd.
Materials / Components
• 100W/ 230V/test lamp - 1 No. • Battery 12V, 40AH - 13 Nos. • Operating manual - 1
No. • Battery connecting wires - as reqd. • Bolt & Nuts for battery - as reqd. • cable
connection - as reqd. • Rack for battery - as reqd.
Procedure:-
TASK 1: Interconnection of batteries to prepare a battery stack for the UPS
1. Calculate to the required level of voltage/current.
2. Collect the required no. of batteries.
3. Connect the batteries in series/ parallel or series parallel as per the
required voltage and current.
4. For connecting in series/parallel and series parallel, refer to the fig given




5. Measure and record the battery voltage of the different combinations.
Sl No No. of batteries and Voltage
voltage rating
Series Parallel Series parallel