Telecom core site, DC plant refit

At a glance

Location: Kosova.

The brief

Replace end-of-life rectifier shelves and battery strings on a core site carrying live subscriber traffic. No planned outage was available and the DC bus had to stay within its design autonomy throughout.

What we delivered

A staged cutover plan, temporary parallel supply, and phased string replacement so the site never dropped below its minimum reserve.

• •Rectifier shelf replacement with load transferred module by module
• •New standby strings sized to the measured site load, not the nameplate
• •Discharge test and commissioning report before handover
• •Old batteries removed under a documented recycling chain

Outcome

The site returned to full documented autonomy with a measured baseline for every string, and moved onto a scheduled maintenance contract with annual impedance testing.