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6 | WECM / Emerald eZA Manual
Drain hole:
WECM / Emerald product can be supplied with drains. Figure 3, Figure 4 and Figure 5 give details about the
mounting configuration.
Figure 3 - Drain position
Figure 4 - Drain closed
Figure 5 - Drain open
ATTENTION!
g
The motor must always be positioned so the drain hole is at the lowest position;
g
Motors supplied with rubber drain plugs leave the factory in the closed position and must be opened
periodically to allow the exit of condensed water. For environments with high water condensation levels and motor with
degree of protection IP55, the drain plugs can be mounted in open position;
For motors with degree of protection IP56, IP65 or IP66, the drain plugs must remain at closed position, being
opened only during the motor maintenance procedures.
Slinger:
WECM / Emerald product in vertical shaft up mounting should be fitted with water slinger ring to prevent water
ingress inside the motor. Consult WEG about this option.
ATTENTION!
Motors installed outdoors or in the vertical position require the use of additional shelter to protect them from
water.
Allowed inertias for WECM frames IEC80 and IEC100, according output power and speed:
Frame
Power (kW)
1500 rpm (kgm²)
1800 rpm (kgm²)
3000 rpm (kgm²)
IEC80
0.12
0.16
0.16
0.05
0.18
0.16
0.16
0.05
0.25
0.16
0.16
0.05
0.37
0.27
0.16
0.05
0.55
0.40
0.27
0.11
0.75
0.40
0.40
0.11
1.10
0.62
0.40
0.11
1.50
0.62
0.62
0.11
IEC100
1.50
0.98
0.98
0.27
2.20
1.20
1.20
0.47
3.00
1.63
1.55
0.47
3.70
1.63
1.63
0.62
4.00
1.63
1.63
0.62
Table 3 - Table of inertias allowed for three phase line
