Adapting The Unit To The Mains Voltage - Pfannenberg DTT 6401 Serie Instrucciones De Servicio

ENG
4.6.8

Adapting the unit to the mains voltage

Factory settings control transformer
Fig. 25: Adapting the mains voltage on the control transformer
Units with a mains voltage of 400/460 V can be connected optionally to another mains voltage.
The mains voltage on the transformer must be adapted for this.
• The adaption is made by replugging the supply cable on the primary side of the transformer.
• The upstream fuse must match the changed mains voltage, see the "Upstream fuse" column in
• The data for the transformer factory settings can be found on the yellow connection diagram (1) on the rear of the unit.
• UL-conform with following fuses: Category "ClassCC", slow-blow.
Mains voltage
50 Hz 60 Hz
400 V —
— 460 V
Tab. 9: Transformer options and upstream fuse
Operating Manual | Roof-mounted Cooling Unit | Multi Controller (MC) – 400 V, 3~ | 086100035c
Transformer
Input winding
T1/ 1 [0] – T 1/ 4 [400]
T1/ 1 [0] – T 1/ 7 [460]
L2
L1
Input winding control transformer
Upstream fuse
(Min. 480 V)
Max. 2.5 A
G00057
Fig. 25
Max. 4 A
50/51