7. Electrical installation
WARNING
Read the safety chapter carefully before continuing.
7.1. Grounding
DANGER
Make sure that the device and the loads connected to it are properly grounded with the appropriate
connection terminals before commissioning.
Ensure that the grounding system is compliant and refer to local regulations for grounding devices.
Each load must be fitted with its own earthing cable, the length of which must be as short as
possible. Do not make interconnected grounding connections.
Leakage currents may exceed 3.5 mA. It is recommended to use the reinforced ground connection if
necessary.
Use the following minimum cross-sections for ground cables:
• cross-section equal to the mains power cable cross-section up 16 mm
2
. (6 AWG)
• 16 mm2 (6 AWG) for mains power cable cross-section between 16 mm
2
(6 AWG) and 35 mm
2
(1 AWG).
• cross-section equal to half the cross-section of the power supply cable when the latter is greater than 35 mm
2
(1
AWG).
7.2. Protection devices
DANGER
It is recommended to install the appropriate protection devices upstream of the device, such as a
circuit breakers, fuses and a residual current device (RCD).
Fuses and switches.
The control device can protect the motor from overloads by digitally controlling the absorbed current against the set
rated current.
It is therefore not necessary to install any overload protection device between the inverter and the motor.
Instead, it is necessary to install overcurrent and short-circuit protection devices, such as fuses and circuit break-
ers, upstream of the device. These trigger in the event of failure of a component inside the device.
Supply voltage Model Recommended fuse
gC
Recommended circuit breaker
ABB MCB S200
1 x 230 VAC MIDA 203 10 S201-C10
1 x 230 VAC MIDA 205 10 S201-C10
1 x 230 VAC MIDA 207 16 S201-C16
3 x 230 VAC MIDA 304 10 S203-C10
3 x 230 VAC MIDA 306 10 S203-C10
3 x 230 VAC MIDA 309 16 S203-C16
3 x 230 VAC MIDA 314 20 S203-C20
3 x 230 VAC MIDA 318 25 S203-C25
3 x 230 VAC MIDA 325 30 S203-C32
3 x 230 VAC MIDA 330 35 S203-C40
3 x 230 VAC MIDA 338 50 S203-C50
3 x 230 VAC MIDA 344 63 S203-C63
3 x 380 - 460 VAC MIDA 404 10 S203-C10
3 x 380 - 460 VAC MIDA 406 10 S203-C10
3 x 380 - 460 VAC MIDA 409 16 S203-C16
3 x 380 - 460 VAC MIDA 414 20 S203-C20
3 x 380 - 460 VAC MIDA 418 25 S203-C25
MIDA
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