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Grundfos CRE Series User Manual

Grundfos CRE Series
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6.7.3.1 Cable cross-section data for MGE motors
3 × 380-480 V, 50/60 Hz, Model K
Speed
[rpm]
Power P2
[kW]
Supply voltage
[V]
Nominal
current
[A]
Cable cross-
section
[mm
2
]
Cable cross-
section
[AWG]
1450-2200
11 3 × 380-480 20.2 - 16.4 6 10
15 3 × 380-480 26.7 - 21.8 6 8
18.5 3 × 380-480 33.2 - 26.9 10 8
22 3 × 380-480 39.2 - 31.5 10 8
2900-4000
15 3 × 380-480 26.7 - 22 6 8
18.5 3 × 380-480 33 - 27.8 10 8
22 3 × 380-480 39.2 - 31.5 10 8
3 x 400-480 V, 50/60 Hz, Model K
Speed
[rpm]
Power P2
[kW]
Supply voltage
[V]
Nominal
current
[A]
Cable cross-
section
[mm
2
]
Cable cross-
section
[AWG]
3500-4000 26 3 x 400-480 43.8 - 37.6 16 6
6.7.4 Conductors
Conductor types
Model K: Use stranded copper conductors only.
Conductor temperature ratings
Model K: Use minimum 75 °C copper
conductors. The wire sizes for the supply mains must
be sized for a wire size which is suitable for at least
125% of the rated input current of the motor drive
units.
6.7.5 Three-phase connections
The cables in the terminal box must be as short as
possible. However, the separated protective-earth
conductor must be so long that it is the last one to be
disconnected in case the cable is inadvertently pulled
out of the cable entry.
To maintain the cURus mark, additional
requirements apply to the equipment. See
the appendix concerning installation in the
USA and Canada.
Model K: To avoid loose connections, ring terminals
must be used. Ensure that ring terminals are short
enough to stay within the terminal cover.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Power supply connection on a three-phase
product
PE
L2
L1
L3
TM082860
Model K
Pos. Description
L1 Phase 1
L2 Phase 2
L3 Phase 3
PE Protective earth
17
English (GB)

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Grundfos CRE Series Specifications

General IconGeneral
Motor TypeAsynchronous
Enclosure ClassIP55
Insulation ClassF
SeriesCRE
Protection ClassIP55
MaterialStainless Steel
ApplicationsWater Supply, Pressure Boosting, Irrigation
Pumped liquidClean liquids
ApprovalsCE
Voltage380-415V
Connection SizeDN 32 to DN 100
EfficiencyIE3 Premium Efficiency
Power Supply3-phase
Liquid Temperature Range-10°C to +120°C
Temperature Range-10°C to +120°C

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