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Adaptation Of Fan Voltage (only Frame Size Fx And Gx) - Siemens MICROMASTER 440 Quick Start Manual

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Issue 08/03
2.2

Adaptation of Fan Voltage (Only Frame Size FX and GX)

A transformer is installed to adapt the cooling fan to the line voltage. It may be necessary to
reconnect the transformer terminals on the primary side to match up with the line voltage.
Figure 2-4 Frame Size FX, Frame Size GX Fan Adaptation Terminals
NOTE
You will most likely connect to the 480V terminals in the USA – however you should check to see what
your actual line supply voltage is.
CAUTION
If the terminals are not correctly connected according to the line voltage, the fan fuses can
blow.
Replacement for fan fuses
Frame size
Fuses (2 each)
1 A / 600 V /
FX (125HP CT)
slow-acting
2,5 A / 600 V /
FX (150 HP CT)
slow-acting
GX (200-300 HP
4 A / 600 V /
CT)
slow-acting
Table 2-5 Replacement Fuses for Frame Size FX, Frame Size GX Fans
20
Recommended fuses
Cooper-Bussmann FNQ-R-1, 600 V or
comparable fuse
Ferraz Gould Shawmut ATDR2-1/2, 600 V
or comparable fuse
Ferraz Gould Shawmut ATDR4, 600 V or
comparable fuse
Quick Start Guide
Part Number for spare fuse
6SL3352-7BE32-1AA1
6SY7000-0AC46
6SY7000-0AC48
MICROMASTER 440
6SE6400-5GA00-0BP0

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