Projects / Telecom

Telecom core site, DC plant refit

A mobile core site cannot be taken down for a battery replacement. The work had to happen around live traffic, with autonomy maintained at every step.

Short answer

Ageing DC plant replaced on a live core site without a single loss of autonomy on the 48 V bus.

At a glance

Location: Kosova.

Sector: TelecomDuty: 48 V DC standbyRegime: Live site, staged cutoverService: Maintenance contract

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.

Have a similar site?

Send us the load profile and the constraint. We will tell you what the work involves before anyone quotes hardware.