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User Manual
3. INSTALLATION
3.1 Assembly
Indoor equipment can be mounted in any position, taking all the precautions and abiding by legal
or regulatory provisions.
Outdoor equipment must only be mounted in upright position.
VKE type models must be handled correctly in order not to damage the outer metal coating. The
transformer must be repaired if there is visible deterioration.
3.2 Installation
The equipment is intended to be installed in networks with neutral to earth (earth fault factor
1.4). In the event that the neutral system was not effectively grounded, consult Laboratorio
Electrotécnico for the possibility of installing the equipment.
Instrument transformers must be installed in appropriate places such as fenced substations,
buildings, modules with enclosures or similar, that do not allow access to dangerous parts by
people and that protect the equipment against foreign objects.
They must also be installed so that no person can access them without first disconnecting the line
that feeds them to access safely by controlled means (blockages, operating procedures, etc.).
3.3 Connection
All the terminals corresponding to the transformation ratios requested are properly and indelibly
marked on the transformed surface, and reference is made to the necessary connection for each
ratio on the equipment name plate.
The equipment is supplied with all the necessary connection elements.
The connections will be made as indicated on the name plate, taking special care when tightening
the terminals, and in the provision of the ratio change connections for those current transformers
that have them.
The tightening torque of these terminals, depending on the metrics used, is given below:
- For M6 terminals
2.5 N.m
- For M12 terminals
20 N.m
- For M10 terminals
11 N.m
- For M16 terminals
45 N.m
Models VKE-24 and VKE-36 must be connected via the specific bushing.
The connection between the bushing and the transformer is made by pressure, keeping the
contact parts as clean as possible and lubricated with non-conductive silicone. The bushing will
be secured to the transformer via the hook or the screws supplied with it: