Leakage Current; Torques; Operating Conditions; Temperatures - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

26.2 Leakage current

Motor size
[Hp (kW)]
0.40 - 14.75 (0.3 - 11)
(supply voltage below 400 V)
0.49 - 14.75 (0.37 - 11)
(supply voltage over 400 V)
The leakage currents are measured in accordance with IEC
61800-5-1:2007.

26.3 Torques

See section 25.3 Torques.

27. Operating conditions

27.1 Temperatures

27.1.1 Ambient temperature during storage and
transportation
Minimum: -22 °F (-30 °C).
Maximum: 140 °F (60 °C).
27.1.2 Ambient temperature during operation
Minimum: -4 °F (-20 °C).
Maximum: 122 °F (50 °C).
The motors can operate with the rated output power (P2) at 122
°F (50 °C), but continuous operation at higher temperatures will
reduce the expected product life. If the motors are to operate at
ambient temperatures between 122 and 140 °F (50 and 60 °C),
oversized motors must be selected. Contact Grundfos for further
information.
27.1.3 Liquid temperature
System type:
Systems with CR, CRE 3 and CR,
CRE 5
Systems with CRE 10 and larger
40
Number of Leakage
pumps in pump current
system [mA]
2 < 7
3 < 10.5
4 < 14
2 < 10
3 < 15
4 < 20
Liquid temperature
(water):
32-140 °F (0-60 °C)
32-180 °F (0-82 °C)
27.2

Installation altitude

Installation altitude is the height above sea level of the installation
site. Motors installed up to 3281 ft (1000 m) above sea level can
be loaded 100 %. The motors can be installed up to 11483 ft
(3500 m) above sea level.
Motors installed over 3281 ft (1000 m) above sea
level must not be fully loaded due to the low density
and consequent low cooling effect of the air.
P2 [%]
100
90
80
70
60
0 1640 3281 4921 6562 8202 9843 11483
Fig. 54 Motor output power in relation to altitude
In order to maintain the galvanic isolation and ensure correct
clearance according to IEC 60664-1:2007, you must adapt the
supply voltage to the altitude:
Supply voltage [V]
500
480
460
440
420
400
380
6562 8202 9843 11483 13123
0 1640 3281 4921
Fig. 55 Supply voltage for three-phase motor in relation to
altitude
Supply voltage [V]
250
240
230
220
210
200
0 1640 3281 4921 6562 8202 984311483 13123
Supply voltage for single-phase motor in relation to altitude

27.3 Humidity

Maximum 95 %.

27.4 Maximum operating pressure

See 5.1 Nameplate.
Altitude [ft]
Altitude [ft]
Altitude [ft]