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English (US)
6.1 Single-phase pumps
6.1.1 Preparation
Before connecting the E-pump to the power supply, take the
issues illustrated in the figure below into consideration.
Fig. 2
Power supply-connected pump with power switch,
backup fuse, additional protection and protective
grounding
6.1.2 Protection against electric shock - indirect contact
Protective ground leads must always have a yellow/green (PE) or
yellow/green/blue (PEN) color marking.
6.1.3 Backup fuses
For recommended fuse sizes, see section
21.1 Supply voltage on
page 31.
6.1.4 Additional protection
If the pump is connected to an electric installation where an
ground leakage circuit breaker (ELCB) is used as additional
protection, the circuit breaker must be of a type marked with the
following symbol:
The total leakage current of all the electrical equipment in the
installation must be taken into account.
The leakage current of the motor in normal operation can be seen
in section
21.3 Leakage current
on page 32.
During start and at asymmetrical supply systems, the leakage
current can be higher than normal and may cause the ELCB to
trip.
6.1.5 Motor protection
The pump requires no external motor protection. The motor
incorporates thermal protection against slow overloading and
blocking (IEC 34-11, TP 211).
6.1.6 Protection against voltage transients
The pump is protected against voltage transients by built-in
varistors between phase-neutral and phase-ground.
6.1.7 Supply voltage and power supply
1 x 200-240 V - 10 %/+ 10 %, 50/60 Hz, PE.
The supply voltage and frequency are marked on the pump
nameplate. Make sure that the pump is suitable for the power
supply of the installation site.
The wires in the terminal box must be as short as possible.
Excepted from this is the protective ground lead which must be so
long that it is the last one to be disconnected in case the cable is
inadvertently pulled out of the cable entry.
Fig. 3
Power supply connection
Cable glands
Cable glands comply with EN 50626.
• 2 x M16 cable gland
• 1 x M20 cable gland
• 1 knock-out cable entry for M16 cable gland.
Grid types
Single-phase E-pumps can be connected to all grid types.
6.1.8 Start/stop of pump
When the pump is switched on via the power supply, it will start
after approx. 5 seconds.
If a higher number of starts and stops is desired, use the input for
external start/stop when starting/stopping the pump.
When the pump is switched on via an external on/off switch, it will
start immediately.
Warning
The user or the installer is responsible for the
installation of correct grounding and protection
according to current national and local
standards. All operations must be carried out by
qualified personnel.
Warning
Never make any connections in the pump
terminal box unless all electric supply circuits
have been switched off for at least 5 minutes.
Note for instance that the signal relay may be
connected to an external supply which is still
connected when the power supply is
disconnected.
The above warning is indicated on the motor terminal
box by this yellow label:
Warning
The surface of the terminal box may be above
158 °F (70 °C) when the pump is operating.
TM
02
07
92
01
01
Warning
The pump must be grounded and protected
against indirect contact in accordance with
national regulations.
___
) ) )
( ( (
N
PE
L
N
L
PE
ELCB
ELCB
TM
02
08
27
21
07
Warning
If the supply cable is damaged, it must be
replaced by qualified personnel.
Warning
Do not connect single-phase E-pumps to a power
supply with a voltage between phase and ground
of more than 250 V.
&DXWLRQ
The number of starts and stops via the power
supply must not exceed 4 times per hour.
PE
L
N
DBP-1 - GRUNDFOS PUMP CRE - 99392005
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