Three-phase 4-conductor systems
The UMG604 can be used in three-phase
4 conductor systems (TN, TT system) (50 Hz,
60 Hz) with earthed PEN conductor. The
bodies of the electrical system are earthed.
The conductor to neutral conductor voltage
may not exceed 300 V AC.
The UMG604 is only suitable for environments
in which the impulse voltage withstand
level of 4 kV (overvoltage category III) is not
exceeded.
Fig. 14.1 Table of the suitable rated voltages.
U
L-N
/ U
L-L
66 V / 115 V
120 V / 208 V
127 V / 220 V
220 V / 380 V
230 V / 400 V
240 V / 415 V
260 V / 440 V
277 V / 480 V
Typical rated voltage
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