Grundfos CRE Manual De Instrucciones página 18

14.1.3.2 Ambient temperature during operation
Model K
Description
Minimum
Maximum
13) 26 kW MGE motors are rated for a maximum value of
40 °C.
14.1.4 Humidity
Description
Maximum humidity (non-condensing)
If the humidity is constantly high and above 85 %,
open the drain holes in the drive-end flange to vent
the motor.
If you install the motor in moist
surroundings or areas with high humidity,
ensure that the bottom drain hole is open.
As a result, the motor becomes self-
venting, allowing water and humid air to
escape. When you open the drain hole,
the enclosure class of the motor will be
lower than standard.
14.1.5 Pollution degree
The product is approved for Pollution degree 3 rating.
14.2 Technical data, three-phase motors
WARNING
Electric shock
Death or serious personal injury
‐
Use the recommended fuse size.
Supply voltage
• 3 × 380-480 V -10 % / +10 %, 50/60 Hz, PE
• 3 × 400-480 V -10 % / +10 %, 50/60 Hz, PE
3 × 380-480 V, 50/60 Hz, Model K
Speed
[rpm]
1450-2200
2900-4000
18
3 × 380-480 V
-20 °C
50 °C
13)
Percentage
95 %
Power Mains voltage
[kW] [V]
≤ 400
11-22
> 400
≤ 400
15-22
> 400
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Recommended size of fuse
You can use standard as well as quick-blow or slow-
blow fuses.
For recommended size of fuses see the
appendix concerning installation in the
USA and Canada.
3 × 380-480 V, Model K
Motor size Recommended
[kW] [A]
11 35
15 50
18.5 60
22 70
3 x 400-480 V, Model K
Recomme
Motor size
nded
[kW]
[A]
26 80
14.2.1 Leakage current (AC)
The leakage currents are measured without any load
on the shaft and in accordance with EN
61800-5-1:2007.
WARNING
Electric shock
Death or serious personal injury
‐
If the leakage current is greater than
3.5 mA, use a PE cable with a
minimum cross-section of at least 10
2
mm , or use 2 separate PE cables with
the same cross section as the power
cable.
Leakage current (I
Maximum
Fuse
type
[A]
63 gG
80 gG
80 gG
80 gG
Maximum
Fuse type
[A]
80 gG
)
L
[mA]
3.5 < I < 20
L
3.5 < I < 30
L
3.5 < I < 20
L
3.5 < I < 30
L