Danfoss VLT 380-500 V Design Manual

Contents

Danfoss VLT 380-500 V Design Manual Manual pdf 88 page image

8.3 Electrical Requirements for Certifications and ApprovalsThe standard configuration provided in this guide (drive modules, control shelf, wire harnesses, fuses, and microswitches) isUL and CE certified. The following conditions must be met apart from the standard configuration to obtain UL and CEregulatory approval requirements. For a list of disclaimers, see chapter 18.1 Disclaimer.• Use the frequency converter in a heated, indoor-controlled environment. Cooling air must be clean, free fromcorrosive materials, and electrically conductive dust. See chapter 6.9 Ambient Conditions for Drive Modules forspecific 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 certifi-cation regulatory approvals, drive modules must be installed according to the standard configuration provided inthis guide.• Maximum voltage and current must not exceed the values provided in for the specified drive configuration.• The drive modules are suitable for use on a circuit capable of delivering not more than 100 kA rms symmetricalamperes at the drive nominal voltage (600 V maximum for 690 V units) when protected by fuses with the standardconfiguration. Refer to chapter 8.4.1 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 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. SuitableIEC (class aR) fuses and UL (class L or T) fuses are listed in chapter 8.4.1 Fuse Selection. In addition, country-specificregulatory 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 Codeand any applicable provincial codes. To fulfill this requirement, use the UL-classified fuses.Considerations During Insta... VLT® Parallel Drive Modules86 Danfoss A/S © 6/2016 All rights reserved. MG37N10288