1250kVA Pad Mounted Transformer 13.8kV-400/230V 60Hz with loop feed

1250kVA 13.8kV 60Hz Pad Mounted Transformer with Loop Feed

Applicable Standards

IEEE Std C57.12.00 – Standard for Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers.
IEEE Std C57.12.28 – Pad-Mounted Equipment - Enclosure Integrity.
IEEE Std C57.12.34 – Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers 
IEEE Std C57.12.90– Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power Transformers.
IEEE Std C57.12.91 – Guide for Loading Mineral-Oil-Immersed Transformers.

Technical data

13.8kV/380V, 1000KVA Pad-Mounted Transformer

A padmount or pad-mounted transformer is a ground mounted electric power distribution transformer in a locked steel cabinet mounted on a concrete pad. Since all energized connection points are securely enclosed in a grounded metal housing, a padmount transformer can be installed in places that do not have room for a fenced enclosure. Padmount transformers are used with underground electric power distribution lines at service drops, to step down the primary voltage on the line to the lower secondary voltage supplied to utility customers.

Pad-mounted transformers are made in power ratings from around 75 to around 5000 kVA and often include built-in fuses and switches. Primary power cables are connected with elbow connectors, which can be operated when energized using a hot stick and allows for flexibility in repair and maintenance.

Figures

You know the components that make up a conventional substation: a transformer and a separate set of
switchgear or cut-out fuses with disconnector.
Just think about it: the total costs incurred by buying a transformer and switchgear separately—including
warehousing, transporting, installing, maintaining and retiring—far outweigh any “deal” you think you might be getting at the time of their purchase.
Sure, a transformer and separate switchgear might be the conventional solution to power distribution… but if you think it’s the cost-effective solution, better think again.

Glances in workshops:

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