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UPS System Optimization

The E&M department is proposing a strategic initiative to optimize the

Uninterruptible Power Supply (UPS) system across stations, from ALVA

to PETT. Currently, two parallel UPS systems, typically rated at 15/20
kVA each, cater to critical loads at each station. These loads include

essential lighting for stations and lifts, fire alarm control panels, elevator

and escalator monitoring panels, gas flooding systems, and power

outlets in Staff Control Rooms.

The existing setup utilizes separate UPS systems from different

manufacturers for E&M and S&T systems. Given the limited lifespan of

UPS battery banks (approximately 4-5 years), a cost-saving opportunity
has been identified. This proposal outlines a plan to migrate the E&M

UPS load to the existing S&T UPS systems. By making necessary

modifications to the E&M Low Tension (LT) panels, this migration can be
achieved seamlessly.

A trial migration of E&M loads to S&T UPS systems has been

successfully conducted at AATK and ERSH stations, demonstrating the
feasibility of this approach. Full-scale implementation is expected to yield

significant cost savings.The estimated savings include approximately six

lakh rupees per station for E&M UPS battery banks and thirteen lakh

rupees per station for E&M UPS Comprehensive Annual Maintenance
Contracts across 22 stations. This translates to a total potential cost

avoidance of Rs 1,45,00,000/- (Rupees One Crore Forty-Five Lakhs

Only).

This UPS migration proposal presents a compelling opportunity to

enhance operational efficiency and generate substantial cost savings for
KMRL. By streamlining the UPS system and leveraging existing

infrastructure, the E&M department aims to ensure reliable power supply

for critical loads while optimizing resource allocation.