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4 Electrical Installation
4.1 Safety Instructions
See 2.3 Safety Precautions for general safety instructions.
W A R N I N G
INDUCED VOLTAGE
Induced voltage from output motor cables that run together can charge equipment capacitors, even with the equipment turned
off and locked out. Failure to run output motor cables separately or to 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 unit can cause a DC current in the PE conductor. Failure to use a Type B residual current-operated protective device (RCD)
may lead to the RCD not providing the intended protection and therefore may result in death or serious injury.
When an RCD is used for protection against electrical shock, only a Type B device is allowed on the supply side.
Overcurrent protection
Extra protective equipment, such as short-circuit protection or motor thermal protection between drive and motor, is required
for applications with multiple motors.
Input fusing is required to provide short circuit and overcurrent protection. If not factory-supplied, the installer must provide
fuses. See maximum fuse ratings in the Fuses and Circuit Breakers section.
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. See 8.1 Electrical Data, 200–240 V and
3x115Y/200–139Y/240 Vto 8.4 Electrical Data, 525–690 V and 8.8.3 Control Cable Cross-sections for recommended wire sizes
and types.
4.2 EMC-compliant Installation
To obtain an EMC-compliant installation, follow the instructions provided in 4.3 Grounding, 4.4 Wiring Schematic, 4.6 Connecting
the Motor, and 4.8.1 Control Wiring.
N O T I C E
POTENTIAL EQUALIZATION
Risk of burst transient when the ground potential between the drive and the control system is different. Install equalizing cables
between the system components. Recommended cable cross-section: 16 mm
2
(6 AWG).
AQ267037536117en-000101 / 130R008320 | Danfoss A/S © 2023.09
Electrical Installation
VLT HVAC Drive FC 102
Operating Guide
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