Grundfos CRNE - Technical Data, Three-Phase Motors

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.
13.1.5 Pollution degree
The product is approved for Pollution degree 3 rating.
13.1.6 Turbine operation
Do not force the product to run at a higher
speed than the maximum speed stated on
the nameplate.
13.2 Technical data, three-phase motors
WARNING
Electric shock
Death or serious personal injury
‐ Use the recommended fuse size.
Supply voltage
• 3 × 380-500 V -10 % / +10 %, 50/60 Hz, PE
• 3 × 380-480 V -10 % / +10 %, 50/60 Hz, PE
• 3 × 400-480 V -10 % / +10 %, 50/60 Hz, PE
• 3 × 200-240 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 × 380-500 V, Model J
Motor size
[kW]
Recommended
[A]
Maximum
[A]
3 10 16
4 13 16
5.5 16 32
7.5 20 32
11 32 32
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
3 × 200-240 V, Model J
Motor size
[kW]
Recommended
[A]
Maximum
[A]
2.2 13 35
3 16 35
4 25 35
5.5 32 35
For recommended size of fuses see the
appendix concerning installation in the
USA and Canada.
13.2.1 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.
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English (GB)