Surroundings; Sound Pressure Level; Terminal Tightening Torques; Cables - Grundfos CUE Series Product Manual

Technical data

Surroundings

Relative humidity
Minimum ambient temperature at full operation
Minimum ambient temperature at reduced op-
eration
Temperature during storage and transportation
Storage duration
Maximum altitude above sea level with full per-
formance
Maximum altitude above sea level with per-
formance reduction
CUE, up to 160 amps
Ambient temperature
Average ambient temperature over 24 hours
CUE, 190 amps and above
Ambient temperature
Average ambient temperature over 24 hours
Note: The CUE comes in a packaging which is not suit-
able for outdoor storage.

Sound pressure level

Maximum sound pressure level measured at a
distance of 1 m from the unit:
Enclosure Sound pressure level [dBA]
A2
A3
A5
B1
B2
B3
B4
C1
C2
C3
C4
D1
D2
1)
The sound pressure level for B3 in the 3 x 525-600 V range is 70 dBA.
The sound pressure level of a motor controlled by a fre-
quency converter may be higher than that of a corre-
sponding motor which is not controlled by a frequency
converter.

Terminal tightening torques

5-95 % RH
32° F (0 °C)
14° F (–10 °C)
–13° F to 149° F
(–25 to 65 °C)
Max. 6 months
3,280 ft (1 km)
6,600 ft (2 km)
Max. 122 °F (50 °C)
Max. 113° F (45 °C)
Max. 113° F (45 °C)
Max. 104° F (40 °C)
1) Conductor cross-section ≤ 95 mm
2) Conductor cross-section ≥ 95 mm

Cables

Cable length
Maximum length, screened motor cable
Maximum length, unscreened motor cable
60
Maximum length, signal cable
60
Cable cross-section to signal terminals
63
67
Maximum cable cross-section to signal
terminals, rigid conductor
70
Maximum cable cross-section to signal
1)
63
terminals, flexible conductor
63
Minimum cable cross-section to signal
62
terminals
65
Note: For cable cross-section to mains and motor, see
67
next section Fuses on page 48.
–
76
74
Tightening torque [Nm]
Enclosure
Mains Motor
A2 1.8 1.8
A3 1.8 1.8
A5 1.8 1.8
B1 1.8 1.8
B2 4.5 4.5
B3 1.8 1.8
B4 4.5 4.5
C1 10
1) 2) 1)
C2
14 /24 14
C3 10
1) 2) 1)
C4
14 /24 14
D1 19
D2 19
2
.
2
.
Grundfos CUE
Ground Relay
3 0.6
3 0.6
3 0.6
3 0.6
3 0.6
3 0.6
3 0.6
10 3 0.6
2)
3 0.6
/24
10 3 0.6
2)
3 0.6
/24
19 19 0.6
19 19 0.6
500 ft (150 m)
1000 ft (300 m)
1000 ft (300 m)
2
16 AWG (1.5 mm )
2
18 AWG (1.0 mm )
2
22 AWG (0.5 mm )
47