Grundfos CRE Safety Instructions And Other Important Information

14.1.3.2 Ambient temperature during operation
Model K
Description 3 × 380-480 V
Minimum -20 °C
Maximum
50 °C
13)
13)
26 kW MGE motors are rated for a maximum value of
40 °C.
14.1.4 Humidity
Description Percentage
Maximum humidity (non-condensing) 95 %
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
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Recommended size of fuse
For recommended size of fuses see the tables below.
3 × 380-480 V, Model K
Motor size
[kW]
Recommended
[A]
Maximum
[A]
Fuse
type
11 35 63 gG
15 50 80 gG
18.5 60 80 gG
22 70 80 gG
3 x 400-480 V, Model K
Motor size
[kW]
Recomme
nded
[A]
Maximum
[A]
Fuse type
26 80 80 gG
For recommended size of fuses see the
appendix concerning installation in the
USA and Canada.
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
mm
2
, or use 2 separate PE cables with
the same cross section as the power
cable.
3 × 380-480 V, 50/60 Hz, Model K
Speed
[rpm]
Power
[kW]
Mains voltage
[V]
Leakage current (I
L
)
[mA]
1450-2200 11-22
≤ 400
3.5 < I
L
< 20
> 400
3.5 < I
L
< 30
2900-4000 15-22
≤ 400
3.5 < I
L
< 20
> 400
3.5 < I
L
< 30
16
English (GB)

Grundfos CRE Specifications

General

Protection Class	IP55
Material	Stainless Steel
Applications	Water supply, pressure boosting, irrigation
Impeller Material	Stainless Steel
Pump Housing Material	Stainless Steel
Connection Size	DN32 to DN200 (depending on model)
Power Supply	3-phase
Control	Integrated frequency converter