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1
2
3
4
5
6
TM059669
Drilling template for pedestal
Pos.
D1h
[mm]
D2h
[mm]
D5h/D7h
[mm]
1
400
400
200
2
325
420
326
3
284
379
290
4
240
240
235
5
4 x 14
4 x 14
4 x 14
6
217
317
290
6. Electrical connection
WARNING
Electric shock
Death or serious personal injury
‐
Before starting any work on the product, make sure
that the power supply has been switched off and that it
cannot be accidentally switched on. See the section
regarding installation requirements.
‐
Touching the electrical parts may be fatal, even after
CUE has been switched off.
The owner or installer is responsible for ensuring correct
earthing and protection according to local regulations.
For products with STO, ensure short-circuit protection of
the cable between terminal 37 and the external safety
device.
Security measures are the responsibility of the user.
The frequency converter parameters can be password
protected.
TM038525
ELCB
Example of three-phase mains connection of CUE with main
switch, backup fuses and additional protection
Related information
9.4 Checking the motor rotation direction
6.1 Electrical protection
6.1.1 Protection against electric shock, indirect contact
CAUTION
Electric shock
Minor or moderate personal injury
‐
CUE must be earthed correctly and protected against
indirect contact according to local regulations.
The leakage current to protective earth exceeds 3.5 mA,
and a reinforced earth connection is required.
Protective conductors must always have a yellow and green (PE) or
yellow, green and blue (PEN) colour marking.
Instructions according to EN IEC 61800-5-1:
•
CUE must be stationary, installed permanently and connected
permanently to the mains supply.
•
The protective earth connection must be carried out with
duplicate protective conductors or with a single reinforced
protective conductor with a cross-section of minimum 10 mm
2
.
6.1.2 Protection against short circuit, fuses
CUE and the supply system must be protected against short circuit.
Grundfos requires that the backup fuses mentioned in section
"Cable cross-section to signal terminals" are used for protection
against short circuit.
CUE offers complete short-circuit protection in case of a short circuit
on the motor output.
Related information
12.3.3 Cable cross-sections to signal terminals
6.1.3 Additional protection
WARNING
Electric shock
Death or serious personal injury
‐
The leakage current to protective earth must exceed
3.5 mA.
If CUE is connected to an electrical installation where an earth
leakage circuit breaker (ELCB/RCD) is used as additional
protection, the circuit breaker must be of a type marked with the
following symbols:
8
English (GB)