•
•
•
•
-
-
-
6 Electrical Installation Considerations
6.1 Safety Instructions
See
chapter Safety
for general safety instructions.
W A R N I N G
INDUCED VOLTAGE
Induced voltage from output motor cables from different drives that are run together can charge equipment capacitors even
with the equipment turned off and locked out. Failure to run output motor cables separately or use shielded cables could result
in death or serious injury.
Run output motor cables separately or use shielded cables.
Simultaneously lock out all the drives.
W A R N I N G
SHOCK HAZARD
The drive can cause a DC current in the ground conductor and thus result in death or serious injury. Failure to follow the recom-
mendation means that the residual current-operated protective device (RCD) cannot provide the intended protection.
When a residual current-operated protective device (RCD) is used for protection against electrical shock, only an RCD of Type
B is allowed on the supply side.
Overcurrent protection
Additional protective equipment such as short-circuit protection or motor thermal protection between drive and motor is re-
quired for applications with multiple motors.
Input fusing is required to provide short circuit and overcurrent protection. If fuses are not factory-supplied, the installer must
provide them. See maximum fuse ratings in
chapter Fuses and Circuit Breakers
.
Wire type and ratings
All wiring must comply with local and national regulations regarding cross-section and ambient temperature requirements.
Power connection wire recommendation: Minimum 75 °C (167 °F) rated copper wire.
9.2.4 Cable Length and Cross-section
for recommended wire sizes and types.
AJ363928382091en-000101 / 130R0983 | 63
Danfoss A/S © 2021.04
Electrical Installation
Considerations
VLT® Flow Drive FC 111
Design Guide
