Electrical Requirements For Certifications And Approvals - Danfoss VLT FC 102 Installation Manual

Electrical Installation

5.2 Electrical Requirements for Certifications and Approvals

The standard configuration provided in this guide (drive
modules, control shelf, wire harnesses, fuses, and
microswitches) is UL and CE certified. The following
conditions must be met apart from the standard configu-
ration to obtain UL and CE regulatory approval
requirements. For a list of disclaimers, see
chapter 8.1 Disclaimer.
•
Use the frequency converter in a heated, indoor-
controlled environment. Cooling air must be
5 5
clean, free from corrosive materials, and
electrically conductive dust. See for specific limits.
•
Maximum ambient air temperature is 40 °C
(104 °F) at rated current.
•
The drive system must be assembled in clean air,
according to enclosure classification. To obtain UL
or CE certification regulatory approvals, drive
modules must be installed according to the
standard configuration provided in this guide.
•
Maximum voltage and current must not exceed
the values provided in chapter 7.1 Power-
dependent Specifications for the specified drive
configuration.
•
The drive modules are suitable for use on a
circuit capable of delivering not more than
100 kA rms symmetrical amperes at the drive
20
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VLT Parallel Drive Modules
•
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•
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Danfoss A/S © 08/2017 All rights reserved.
nominal voltage (600 V maximum for 690 V units)
when protected by fuses with the standard
configuration. Refer to chapter 5.4.1 Fuse Selection.
The ampere rating is based on tests done
according to UL 508C.
The cables located within the motor circuit must
be rated for at least 75 °C (167 °F) in UL-
compliant installations. The cable sizes have been
provided in chapter 7.1 Power-dependent Specifi-
cations for the specified drive configuration.
The input cable must be protected with fuses.
Circuit breakers must not be used without fuses
in the U.S. Suitable IEC (class aR) fuses and UL
(class L or T) fuses are listed in chapter 5.4.1 Fuse
Selection. In addition, country-specific regulatory
requirements must be adhered to.
For installation in the U.S., branch circuit
protection must be provided according to the
National Electrical Code (NEC) and any applicable
local codes. To fulfill this requirement, use UL-
classified fuses.
For installation in Canada, branch circuit
protection must be provided according to the
Canadian Electrical Code and any applicable
provincial codes. To fulfill this requirement, use
the UL-classified fuses.
MG37K302