Grundfos RADIOMODULE 2G4 - Page 16

If you want to supply the product through an IT network, make sure that you have a suitable product variant. If you are in doubt,
contact Grundfos. Only the following motors can be supplied through an IT network:
• Motors with a speed of 1450-2000/2200 rpm and up to 1.5 kW
• Motors with a speed of 2900-4000 rpm or 4000-5900 rpm and up to 2.2 kW.
Corner earthing is not allowed for supply voltages above 3 x 240 V and 3 x 480 V, 50/60 Hz.
Mains connection on a three-phase motor
PE
L2
L1
L3
TM053495
Pos. Description
L1 Phase 1
L2 Phase 2
L3 Phase 3
PE Protective earth
4.2.6 Residual-current circuit breakers
DANGER
Electric shock
Death or serious personal injury
‐ If national legislation requires a Residual Current Device (RCD) or equivalent in the electrical installation, this must be type B or
better, due to the nature of the constant DC leakage current.
The residual-current circuit breaker must be marked.
TM066230
Take into account the total leakage current of all the electrical equipment in the installation.
This product may cause a direct current in the protective-earth conductor.
Connection example for single-phase supply
The drawing shows an example of a mains-connected single-phase motor with a main switch, a backup fuse and a residual-current circuit
breaker, type B.
N
N
L
L
PE
1
TM069814
Pos.
Description
1 Residual-current circuit breaker, type B
N Neutral
L Phase
PE Protective earth
16
English (GB)