Danfoss VLT AHF 005 Design Guide

10 Electrical Installation Considerations
10.1 Safety Instructions
See chapter 2 Safety for general safety instructions.
WARNING
INDUCED VOLTAGE
Induced voltage from output motor cables from dierent
drives that are run together can charge equipment
capacitors even with the equipment turned o 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.
WARNING
SHOCK HAZARD
The drive can cause a DC current in the ground
conductor and thus result in death or serious injury.
•
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.
Failure to follow the recommendation means that the
RCD cannot provide the intended protection.
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 fuses are not
factory-supplied, the installer must provide them.
See maximum fuse ratings in chapter 10.5 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.
See chapter 7.6 Cable Specications for recommended wire
sizes and types.
CAUTION
PROPERTY DAMAGE
Protection against motor overload is not included in the
default setting. To add this function, set
parameter 1-90 Motor Thermal Protection to [ETR trip] or
[ETR warning]. For the North American market, the ETR
function provides class 20 motor overload protection in
accordance with NEC. Failure to set parameter 1-90 Motor
Thermal Protection to [ETR trip] or [ETR warning] means
that motor overload protection is not provided and, if
the motor overheats, property damage can occur.
Electrical Installation Con... Design Guide
MG16C302 Danfoss A/S © 11/2017 All rights reserved. 165
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Danfoss VLT AHF 005 Specifications

General

Brand	Danfoss
Model	VLT AHF 005
Category	DC Drives
Language	English