General instructions for installation of an oil immersed transformer

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Trihal cast resin transformers HV/LV and HV/HV

HV/LV and HV/HV oil immersed transformers

FAQs > HV/LV and HV/HV oil immersed transformers


European and international reference standards applicable to oil-immersed transformers.

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Definition of the Self-Protected Transformer

Role of a DGPT2 or DMCR protection device in a transformer

Monitoring functions of a DGPT2 or DMCR protection device

European and international reference standards applicable to the oils used in France Transfo’s range of oil-immersed transformers

General instructions for installation of an oil immersed transformer Ensure that machine characteristics shown on the rating plate correspond with installation conditions: primary voltage(s), tapping links. This plate may be moved and attached to any side of the tank so that it is visible once the machine is in position. In general, installation must comply with the requirements of IEC Standard 71-1, 2 and 3 in relation to insulation co-ordination. E.g.: case of overhead-underground connection to be protected by lightning arresters installed at both ends of the HV cable. Unit to be installed at a maximum altitude of 1000 m, unless otherwise specified with order, because air rarefaction adversely affects cooling of the windings. Unless otherwise specified with order, transformers of standard design are sized in accordance with IEC Standard 76 for the following ambient temperatures: - maximum : 40°C - average daily : 30°C - average annual : 20°C - minimum : – 25°C When the transformer is live, the ambient temperature inside the plantroom must comply with the above values, unless the transformer has been specially designed on the basis of a particular specification.

Defining the height and cross-sections of ventilation openings in the transformer room

Dielectric fluid retention system

Starting or inrush current

Is the CE Marking applicable to the France Transfo transformers?

What does the set of initials with 2 or 4 letters mean to define the cooling system for oil immersed transformer ?

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