The local faults at a sub-station and ongoing upgradation of transformers disrupted power supply in several areas in the city on Saturday, even as sweltering heat gave no respite to the residents. According to power officials, the power situation in the city will be normal only by Monday.
The power supply remained disrupted in sectors 19 and 27 for about 10 hours on Friday night after a 33-KVA sub-station at Sector 19 developed snag due to over-loading. About one thousand houses were pushed into darkness from Friday midnight to 10am on Saturday.
Besides, two dozen sectors faced power crunch on Saturday due to an upgradation work of a transformer at Sector 20.
According to the power department, it took more than eight hours to resume power supply in Sector 19 and some parts of Sector 27 after the sub-station at Sector 19 developed a major fault.
The residents said that even back-up facility, such as inverters, could not provide much relief.
"At 3am, battery of my inverter was completely discharged. The frequent power cuts do not allow the battery to get properly charged. The department should work upon a time-table for power cuts," said Tara Khanna of Sector 27.
CL Gupta, superintendent engineer in the electricity department, said, "Sectors connected with Sector 20 sub-station will face outages during the weekend. The transformer upgradation work will be completed by Monday morning."