Schneider Electric MNA01M001EN manual Mains reactor

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3 Engineering

LXM32

3.6Mains reactor

A mains reactor is required if at least one of the following criteria is met:

•The output power of the drive is to be increased.

•The short-circuit current rating (SCCR) of the supplying mains is greater than specified for the drives.

•Current harmonics are to be reduced.

If one drive requires a mains reactor, then all drives connected via the DC bus must be equipped with mains reactors.

The mains reactor for several drives with a common AC fuse must be rated in such a way that the nominal current of the mains reactor is greater than the total of the input current of the drives.

The fuse rating of the fuse upstream of the mains reactor must not be greater than the nominal current of the mains reactor.

L1
L2
L3
E1	S1
E2	S2
E3	S3
	L3 L2 L1	L3 L2 L1
	PC/- PA/+	PC/- PA/+
DC+
DC -

Figure 10: Wiring of drives with common AC fuse and a mains reactor, exam- ple shows three-phase drives.

MNA01M001EN, V1.01, 08.2014

36	Common DC bus

Image 36

Contents LXM32 LXM32 Table of contents Accessories and spare parts Safety Information Hazard categoriesQualification of personnel Intended useBasic information Loss of Control DC bus voltage measurement Standards and terminologyLXM32 About the book LXM32 Introduction Permissible device types for common DC bus Technical Data Firmware versionDC bus data Braking resistor LXM32 ∙ U45M2 U90M2 D18M2 D30M2Parameter DCbuscompat External braking resistors accessories VW3A760 1Rxx 2Rxx 3Rxx 4Rxx 5Rxx 6Rxx 7RxxCables for the DC bus Engineering Energy balance Energy balance basicsRating Electromagnetic compatibility EMC DC bus connectionDC bus connection of single-phase drives FusesSee .2 DC fuses for fuses for the DC bus DC bus connection of three-phase drives Single mains fuse for three-phase drivesMultiple mains fuses for three-phase drives Supply via the DC bus Supply via the DC bus by a drive LXM32 Braking resistors Rating the braking resistorPmax Rating information Selecting an external braking resistor Mains reactor L2 L1 PC/- PA/+ Mains filter Mains reactor and external mains filter LXM32 Installation Specifications for drives with mains supply Assembling cablesPart Length in mm inches LXM32∙ D85, C10 Wiring the DC bus Drives with connectorsNector Drives with terminals Properties of the connection termi- nals CN9Connecting the DC bus DC bus connection, example with connectorVerifying installation LXM32 Commissioning Commissioning procedure DC bus connection LXM32 to LXM32MONMainsVolt LXM32 Setting the braking resistor parameters Accessories and spare parts DC bus accessoriesDC fuses External braking resistors Glossary Units and conversion tablesTemperature RotationTorque Moment of inertiaTerms and Abbreviations LXM32 Table of figures LXM32 Index EMCLXM32

MNA01M001EN specifications

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