• Average temperature over 24 hours must not 30°C and the temperature of the room
should not 40°C.
• Care should be taken to prevent restriction of air circulation.
• Adequate space must be maintained between transformers / between transformers and
nearby equipment or walls.
• Separation is especially important near the transformer radiators, with a recommended
minimum spacing equal to the radiator panel depth.
• In case the height of the place of installation higher than 1000m and/or the ambient
temperature values are higher than the ones specified above, it is necessary to specify it
at the ordering stage since a particular dimensioning of the transformer depends upon
these values.
• Do not energize the transformer which do not provide storage control procedures.
6.2 CONNECTION
6.2.1 Electrical and Mechanical Connections
• Decide and choose the cable cross-section according to the system current and voltage.
• Be sure that the surfaces are clean. Dirty surfaces may cause isolation and contact
problems.
6. INSTALLATION AND CONNECTION
6.1 INSTALLATION
The installation location of a transformer must be carefully considered. Transformers, as is the
case with most electrical equipment, generate a substantial amount of heat during operation.
This heat must be removed in order to allow the transformer to maintain its designed
maximum temperature limits.
If a transformer is located outdoors, the heat will be removed by natural convection cooling
unless the radiator (or corrugated walls) air flow is restricted by surrounding objects. Indoor
installations require adequate ventilation to remove the heat of transformer operation. Inlet
ventilation openings should be as low as possible and outlet ventilation openings as high as
possible.
Ulusoy Distribution Transformers Maintenance, Operation, Installation and Instruction Manual
