CATALOGUE

EdM: a system under control
Temperature and ventilation surveillance
TEMPERATURE SURVEILLANCE TOOLS
EdM gives you the possibility of combining
all its transformers of any size with the best
temperature detection tools now available on the
market:
- Thermal sensors - PT100: positioned by EdM
near the warmest area of the winding; they
can be programmed according to the specific
requirements of any installation.
- PTC thermistors: positioned by EdM near the
warmest area of the winding; their preset alarm
threshold and trip threshold are chosen by the
customer when the order is placed.
The wiring of the connections used for the
temperature sensors are protected and screened
by a special metal plate conduit and are connected
to a terminal board installed inside a strong
metallic box.
Furthermore, when combined with control
sensors, EdM can supply the following, if required:
- T154 Unit or MT200 Unit: equipment used
for controlling the PT100 thermistors with
temperature display, output relay for alarm,
optional trip and control of the ventilation bars
supplied as a detached part to be installed on the
electric panel.
VENTILATION ACCESSORIES
If required, EdM can directly equip its own
transformers at the factory with special ventilation
bars.
These special tangential fans are designed to
allow temporary and limited increase of the power
delivered by the transformer, up to +40% of the
rated power.
- VRT200 Unit: equipment for automatic activation
and control of the fans.
EdM
CAST RESIN TRANSFORMERS
- T119 Unit: equipment used for controlling the
PTC thermistors with output relay for alarm,
optional trip and control of the ventilation bars
supplied for being installed on the electric panel.
HIGH POWER GENERAL CATALOGUE
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