TRE and TRE..TK Series single-phase
transformer controllers
General remarks: The TRE and TRE..TK series of transformer controllers for single phase
AC fans and motors, provide energy saving speed control without the creation of addi-
tional motor noise which you get with most electronic controllers. Vacuum impregnation
further reduces electrical noise from the transformers. Available for total load current of
up to 7.5 Amps, a rotary switch selects one of 5 different voltages.
The standard product has a simple fan/motor connection without provision for thermal
overload protection. Use of a separate motor protection device is recommended.
The TK version has connections for motor thermal overload protection. When connected,
an overheat condition will cause the motor supply to trip off. It can only be restarted after
the motor has cooled and either power disconnected from the controller or the selector
switch cycled through the off setting.
Nominal data
oC
Type
V
Hz
A
kg
mm
mm
mm
mm
mm
TRE2
230
230
230
230
230
230
50/60
50/60
50/60
50/60
50/60
50/60
2.0
4.0
7.5
2.0
4.0
7.5
No
No
3.5
6.0
7.5
3.5
6.0
7.5
40
40
40
40
40
40
IP54
IP54
IP54
IP54
IP54
IP54
200
200
200
200
200
200
150
150
150
150
150
150
150
150
150
150
150
150
144 x 98
144 x 98
144 x 98
144 x 98
144 x 98
144 x 98
5.5
5.5
5.5
5.5
5.5
5.5
TRE4
TRE7.5
TRE2TK
TRE4TK
No
Yes
Yes
Yes
TRE7.5TK
Subject to alterations
Please contact us for higher rated controllers.
Wiring diagram
6
EBMPAPST [ ebm-papst ]
