Grundfos CRE Series Installation And Operating Instruction page 66

14.4.2 EMC (electromagnetic compatibility)
Standard used: EN 61800-3.
The table below shows the emission category of the motor.
C1 fulfils the requirements for residential areas.
3 × 440-480 V, 60 Hz, Model K
Speed
[rpm]
2900-4000
C2 fulfils the requirements for residential areas if the system is
operated and installed by qualified persons.
C3 fulfils the requirements for industrial areas.
Model K
Motor
[HP]
20
25
30
14) Depending on product hardware configuration.
Immunity: The motor fulfils the requirements for industrial areas.
Contact Grundfos for further information.
14.4.3 Enclosure class
Motor
Standard: TEFC
Optional: IP66
Variable Frequency Drive
The enclosure of 20 - 30 hp MLE motors is approved for NEMA
type 2 and 12.
The NEMA rating can be found on the product's nameplate:
Type:
P.C.:
P.N.: -V
DE: Env.Type: TEFC
NDE: PF: CL:
Wt: kg Tamb: ˚C
14.4.4 Insulation class
311 °F (155 °C).
14.4.5 Standby power consumption
5-10 W.
66
Power P2
[HP]
20
25
30
2900-4000 rpm
C2/C3
INPUT OUTPUT Variant
P2: kW PB:
V n: rpm FM:
IE5 Made in Hungary
Hz PDS Eff : % HMI:
xxxv
IES2
A CIM:
DK - 8850 - Bjerringbro - Denmark
Model K: This equipment complies with IEC 61000-3-12
provided that the short-circuit power S
equal to the respective value described in the table below
at the interface point between the user's supply and the
public system. It is the responsibility of the installer or user
of the equipment to ensure, by consultation with the
distribution network operator if necessary, that the
equipment is connected only to a supply with a short-
circuit power S
SC
value described in the table below.
Supply voltage
[V]
3 × 440-480
3 × 440-480
3 × 440-480
In a residential environment, this product may cause radio
interference in which case supplementary mitigation
measures may be required.
Emission category
14)
C2/C3 14)
14)
C2/C3
14.4.6 Cable entry sizes
Number and size of cable entries
Motor
[HP]
20-30 3 x 440-480 V, 60 Hz
14.4.7 Torques
Torques for terminals
Terminal
L1, L2, L3
PE
NC, C1, C2, NO
DI1, DI2, DI3, DI4, AI1, AI2, AI3, AO1,
PT1, PT2, LT1,
LT2, GND, 24V, 5V, TX, RX, A, Y, B, S24,
ST1, ST2
Torques for other parts
Part designation
Control box, upper part
Cover for power supply
is greater than or
SC
greater than or equal to the respective
Short-circuit power
[mVA]
4.6
5.8
6.6
4000-5900 rpm
-
-
-
Number and size of
Supply voltage
cable entries
1 x NPT 1"
6 x NPT 1/2"
Recommended
torque
[ft⋅lb]
1.6
4.4
0.4
0.4
Recommended
torque
[ft⋅lb]
4.8 - 5.2
0.7 - 1