Section 1
General Information
Receiving & Installation 3-13
MN722
Hardware Changes for Reduced Voltage Input
Size C+, D+,D, E, F and G+ controls all require modification for operation at a reduced
line voltage (less than rated nominal). Table 3-8 defines the modifications for each
enclosure size. Figure 3-1 shows the locations of the transformer locations for each
enclosure size.
Table 3-8 Hardware changes for 380-400VAC operation
Enclosure
Size
Control
Transformer
Tap Change
Contactor
Transformer
Tap Change
Fuse Block
Connection
Change
C+
Yes
No
D+
Yes
No
D
Yes
No
E
Yes
Yes
F
Yes
Yes
G+
No
Yes
Yes
Figure 3-1 Control and Contactor Transformer Locations
Control Sizes
C+, D, D+
Logic Control
Board
Control
Transformer
Control Size
E
Control Size
F
Control
Transformer
Contactor
Transformer
Input
Contactor
Control Size
G+
Contactor
Transformer
Fan
Transformers
Input
Contactor
Control
Transformer
Contactor
Transformer
Input
Contactor
Not drawn to scale or proportion
Swing out panel
Fuse
Block
xfmr
xfmr
Содержание 22H series
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