Product Overview
Table Of Contents
- 1. Introduction
- 2. Identification
- 3. Selection of product
- 4. Performance range
- 5. Product range
- 6. Variants
- 7. Construction
- 8. Product description
- 9. Curve charts
- 10. Performance curves and technical data
- SEG.A15.20.(EX).2.1.603
- SEG.A15.20.R2.(EX).2.1.603
- SEG.A15.20.R1.(EX).2.1.603
- SEG.A15.20.(EX).2.60H/L/M
- SEG.A15.20.R2.(EX).2.60H/M
- SEG.A15.20.R1.(EX).2.60H/M
- SEG.A15.30.(EX).2.60H/L/M
- SEG.A15.40.(EX).2.60H/L/M
- SEG.A15.55.(EX).2.60H/L/M
- SEG.A20.30.(EX).2.60H/L/M
- SEG.A20.40.(EX).2.60H/L/M
- SEG.A20.55.(EX).2.60H/L/M
- 11. Dimensions and weights
- 12. Accessories
- 13. Grundfos Product Center
Product description
SEG
8
17
8. Product description
Features
Ball bearings
The ball bearings are greased for life.
Top bearings:
• 2.0 hp (1.5 kW):
Single-row ball bearing 6201.
• 3.0 hp (2.6 kW) and up:
Single-row ball bearing 6205.
Bottom bearings:
• 2.0 hp (1.5 kW):
Single-row ball bearing 6303.
• 3.0 hp (2.6 kW) and up:
Angular-contact ball bearing 3205.
Shaft seal
The SEG range is available with two shaft seal
variants. Both variants are fitted as cartridge seals.
The shaft seal separates the motor from the pumped
liquid.
2.0 hp (1.5 kW) pumps have a silicon carbide/silicon
carbide (SiC/SiC) mechanical shaft seal as primary
seal and a lip seal as secondary seal. In connection
with service, the mechanical shaft seal and the lip seal
are supplied as one unit ready for fitting.
Pumps of 3.0 hp (2.6 kW) and up have a double
mechanical seal with a cartridge consisting of a silicon
carbide/silicon carbide (SiC/SiC) mechanical shaft seal
as primary seal and a carbon/aluminium oxide
mechanical shaft seal as secondary seal.
Motor
The motor is a watertight, totally encapsulated motor.
Insulation class: F [311 °F (155 °C)].
Supply voltage tolerance: - 10 %/+ 6 %.
Temperature class: F [221 °F (105 °C)].
Enclosure class: IP68.
Maximum starts per hour: 30.
For motor protection and sensors, see Sensors, page
17.
Power supply cables
Standard cable
As standard, the cables are 33 feet (10 m) long. Other
cable lengths are available on request. See List of
variants, page 11.
The number and dimension of cables depend on the
motor size.
Cable entry
The stainless-steel plug is fastened with a union nut.
The nut and O-rings provide sealing against ingress of
the liquid.
The plug is filled with a two-component compound that
is cast into the plug around the leads of the cable. This
prevents the ingress of water into the motor through
the cable in case of cable breakage or adverse
handling in connection with installation or service.
Sensors
As standard, the pump has two thermal switches
incorporated in the motor windings to protect the motor
against overheating.
Cable type
Outer cable
diameter
[inch (mm)]
Bending radius
Fixed Free
7G AWG16
0.61 ± 0.02
(15.5 ± 0.5)
60 90