12
Fig. 9
Connection terminals - TPED
A galvanic separation must fulfil the requirements for reinforced
insulation including creepage distances and clearances specified
in EN 60335.
5.3 Electrical connection – three-phase pumps,
11-22 kW
5.3.1 Preparation
Before connecting the E-pump to the mains, take the issues
illustrated in the figure below into consideration.
Fig. 10
Mains-connected pump with mains switch, backup
fuses, additional protection and protective earthing
5.3.2 Protection against electric shock - indirect contact
EN 61800-5-1 specifies that the pump must be stationary and
installed permanently when the leakage current is > 10 mA.
One of the following requirements must be fulfilled:
•
A single protective earth conductor having a cross-sectional
area of min. 10 mm
2
copper.
Fig. 11
Connection of a single protective earth conductor
using one of the conductors of a 4-core mains cable
(with cross-sectional area of min. 10 mm
2
)
•
Two protective earth conductors of the same cross-sectional
area as the mains conductors, with one conductor connected
to an additional earth terminal in the terminal box.
Fig. 12
Connection of two protective earth conductors using
two of the conductors of a 5-core mains cable
Protective earth conductors must always have a yellow/green
(PE) or yellow/green/blue (PEN) colour marking.
T
M
03
01
25
41
04
Warning
The user or the installer is responsible for the
installation of correct earthing 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 mains supply is
disconnected.
Warning
The surface of the terminal box may be above
70 °C when the pump is operating.
0/1
10K
RUN
STOP
1 9 8 7
6 5 4 3 2
B Y A
0-10 V
0/4-20 mA
4-20 mA
0/4-20 mA
0-10 V
L3
L2
L1
NO
C
NC
Group 4
G
roup 2
G
roup 3
1: Digital input
9: GND (frame)
8: + 24 V
7: Sensor input
B: RS-485B
Y: Screen
A: RS-485A
6: GND (frame)
5: + 10 V
4: Setpoint input
3: GND (frame)
2: Start/stop
Group 1
___
) ) )
( ( (
T
M
00
92
70
46
96
Warning
The pump must be earthed in accordance with
national regulations.
As the leakage current of 11-22 kW motors is
> 10 mA, take extra precautions when earthing
these motors.
T
M
04
30
21
35
08
TM
03
86
06
20
07
L1
L2
L3
L2
L1
L3
PE
ELCB
