Setting Up The Cue Frequency Converter In An Spe System - Grundfos SP Installation And Operating Instructions Manual

6.6.8 SPE and sine-wave filter
Grundfos SPE pump systems, consisting of one SPE pump set and
one CUE, meet the VFD and motor input requirements in the table
below. When application and grid requirements are fulfilled, a sine-
wave filter is not required.
Requirements for the MS6000P to operate without sine-wave
filter
Value
Application requirements
Max. media
60/140
temperature
Max. cable length 300/1000
Grid requirements
Max. line-line
460
voltage
Phases 3
VFD requirements
Max. DC voltage 620
Max. peak
voltage at inverter 650
terminals
Min. rise time at
VFD terminals
100
(10-90 % V )
DC
Max. dU/dt at
5
VFD terminals
Max. switching
4
frequency
Grid voltage
Passive rectifier bridge
rectification
Motor input requirements
Max. peak
voltage at 1500
terminals
Max. dU/dt at
6
motor terminals
• Local and national requirements regarding safety, EMI,
etc., must always be followed and can demand filtering
due to, for instance, noise suppression.
• Cables and other system components must be
properly rated for VFD use.
• If the cables are longer than 300 m/1000 ft and/or the
grid voltage is higher than 460 V, a sine-wave filter
must still be used.
18
Grundfos SPE
Unit
systems
[°C/°F] Must be met
[m/ft] Must be met
[V RMS] Must be met
[-] Must be met
✔
[V ]
DC
✔
[V ]
LL
✔
[ns]
✔
[V/ns]
✔
[kHz]
✔
✔
[V ]
LL
✔
[V/ns]
7. Setting up the CUE frequency converter in an
SPE system
The SPE system consists of the following:
• SPE pump set
• CUE frequency converter.
The CUE has a start up guide. Follow the instructions on the
display.
For further information regarding safety and advanced settings, see
the CUE Installation and operating instruction.
Installation and operating instructions
http://net.grundfos.com/qr/i/9780034