Which of the two types needs more maintenance?

The oil-filled one, because it adds fluid analysis and level and seal integrity checks. It is also the one most often deferred, which is why it is worth scheduling well in advance.

Can it be done without vacating rooms?

Yes. Work is done zone by zone in low-occupancy windows, with critical services backed up. In hospitality the schedule is agreed with maintenance and with the front desk before starting.

What happens to lifts and security systems during the work?

They are identified in advance and their supply is guaranteed, either by keeping them on the circuit not being worked on or through a transfer. They are never out of service.

Substation maintenanceHotel Habitel

Maintenance of a substation with a mixed fleet — 300 kVA dry-type transformers and a 500 kVA oil-filled transformer — and of the low-voltage switchboards, in a hotel in continuous operation.

LocationBogotá, Colombia SectorHospitality ServiceMaintenance and measurements Get a similar quote

Hotel guest-room corridor — Areas in service

Thermal camera reading on a transformer — On-site measurements

Electrical panel with labelled circuits — Identified circuits

Maintenance of transformers dry-type, 300 kVA.

What was needed

A hotel never closes. The Habitel substation combines dry-type and oil-filled transformers, which call for two different maintenance protocols on two different calendars. Both had to be worked on without any guest noticing and without lifts or security systems losing power.

Electrical drawings and a meter on the workbench — A mixed fleet calls for two different protocols in the same substation.

Dry and oil: two machines, two protocols

A dry-type and an oil-filled transformer do the same job but are maintained differently. The dry-type is cleaned, its connections checked and its insulation measured; the oil-filled one additionally requires fluid analysis, level checks and seal integrity control. They run on different intervals and they fail in different ways.

When a substation combines both — as at the Habitel, with 300 kVA dry-type and 500 kVA oil-filled — the oil unit is usually the one that falls behind, because its maintenance is more laborious and easier to defer. The consequence is that the largest machine, the one carrying the most load, ends up the worst attended.

Result

The entire substation was left fully up to date on maintenance, with separate protocols for the dry and the oil-filled units, without interrupting hotel operations.

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