IG-287-EN version 03; 24/07/2020
18
Installation
General Instructions
transforma
.plur: Transformers with corrugated tank
and submerged in dielectric liquid from 3150 kVA
5.3.2. Special transformers with electrostatic screen between primary and secondary
Transformers which are to be connected to renewable
generation plants (photovoltaic or wind) or to power
electronics equipment must have the following additional
considerations:
• Transformers may be fitted with an internal electrostatic
screen to mitigate the effects of disturbance associated
with power electronics. The electrostatic screen must
have its connector bushing identified as P.E. or E.S. and
must be connected rigidly to the installation's earth
(preferably the protection earth, if there are two earth
installations).
Risk of death by electric shock and of irreversible
damage to the transformer or to the electrical
installation.
• If the transformer is fitted with an electrostatic screen,
connect it to the installation's earth.
• The transformers may have more than one secondary
winding. Properly connecting the windings to the
different sources which will supply energy to the
transformer must be taken into account.
• Transformers with only one secondary can have
duplicate external connections for easier connection.
The correct distribution of power between them must
be taken into consideration.
