www.sentera.eu
MIW-STR-4-EN-000 - 09 / 08 / 2018
7 - 8
back to the table of contents
Fig. 3 Wiring and connections
R
S
T
N L1 U
V
W
3 x 400 Vac
230 Vac
3ph + N
ATTENTION
All works must be carried out with equipment fully isolated from the power
supply.
ATTENTION
Make sure the connections are correct before you power the unit.
7.
Close the cover.
8.
Turn the knob at ‘0’.
9.
Tighten the cable glands.
10.
Switch on the mains supply.
11.
Make sure the transformer controller can operate normally (consider an isolating
switch).
12.
Turn the knob into the relevant position to adjust the output voltage.
Optional settings
The standard configuration of the output voltages is as indicated in
Table 1
below.
However, if more than 5 output voltages are available, it is possible to adjust the 5
steps by changing the internal wiring.
Table 1 Voltage series
Knob position
0
-
1
2
3
4
5
Regulated output [VAC]
L40 version
0
-
130
180
230
300
400
L50 version
0
130*
170
220
260
300
400
Unregulated output [VAC]
L1
0
230
230
230
230
230
230
* Available but not connected.
STANDARD 3-PHASE 400 VAC
TRANSFORMER CONTROLLER
STR-4
