Grundfos SEG Series User Manual

English (GB)
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10. Technical data
10.1 Operating conditions
The Grundfos SEG pumps are designed for
intermittent operation (S3). When completely
submerged in the pumped liquid, the pumps can also
operate continuously (S1). See section
4.1 Operating modes.
10.1.1 Installation depth
Maximum 10 m below liquid level.
10.1.2 Operating pressure
Maximum 6 bar.
10.1.3 Number of starts per hour
Maximum 30.
10.1.4 pH value
Pumps in permanent installations can be used for
pumping liquids with pH values between 4 and 10.
10.1.5 Liquid temperature
0-40 °C.
For short periods (maximum 15 minutes), a
temperature of up to 60 °C is permissible (non-Ex
versions only).
10.1.6 Density and viscosity of pumped liquid
When pumping liquids with a density and/or a
kinematic viscosity higher than that of water, use
motors with correspondingly higher outputs.
10.1.7 Sound pressure level
The sound pressure level of the pumps is lower than
the limiting values stated in the EC Council Directive
2006/42/EC relating to machinery.
10.2 Electrical data
10.2.1 Supply voltage
• 1 x 230 V - 10 %/+ 6 %, 50 Hz.
• 3 x 230 V - 10 %/+ 6 %, 50 Hz.
• 3 x 400 V - 10 %/+ 6 %, 50 Hz.
10.2.2 Enclosure class
IP68, according to IEC 60529.
10.2.3 Insulation class
F (155 °C).
10.2.4 Winding resistances
The table values do not include the cable.
Resistance in cable: 2 x 10 m, approx. 0.28 Ω.
10.2.5 Pump curves
Pump curves are available via www.grundfos.com.
The curves are to be considered as a guide. They
must not be used as guarantee curves.
Test curves for the supplied pump are available on
request.
10.3 Dimensions and weights
10.3.1 Dimensions
See figs A to C in Appendix.
10.3.2 Weights
Explosion-proof pumps must never pump
liquids at a temperature higher than 40 °C.
Motor size Single-phase motor
[kW] Starting winding Main winding
0.9 - 1.2 4.5 Ω 2.75 Ω
1.5 4.1 Ω 2.9 Ω
Three-phase motor
3 x 230 V 3 x 400 V
0.9 - 1.5 6.8 Ω 9.1 Ω
2.6 3.4 Ω 4.56 Ω
3.1 - 4.0 2.52 Ω 3.36 Ω
Pump type
Weight
[kg]
SEG.40.09.2.1.502 40
SEG.40.09.2.50B/C 39
SEG.40.12.2.1.502 40
SEG.40.12.2.50B 40
SEG.40.12.2.50C 39
SEG.40.15.2.1.502 53
SEG.40.15.2.50B 40
SEG.40.15.2.50C 39
SEG.40.26.2.50B/C 62
SEG.40.31.2.50B/C 70
SEG.40.40.2.50B/C 40
SEG.50.26... 64
SEG.50.31... 72
SEG.50.40... 72

Grundfos SEG Series Specifications

General

Power Supply	Electric
Maximum Liquid Temperature	40°C
Installation	Submersible
Protection Class	IP68
Applications	Sewage, wastewater
Material	Cast iron
Impeller Type	Vortex
Frequency	50 Hz
Housing Material	Cast iron
Impeller Material	Cast iron
Seal Type	Mechanical seal
Weight	Varies depending on model (typically 30-60 kg)