Planning of MODAN® Modular Power Systems -...

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Technical GuideValid from November 2009

Planning of MODAN®

Modular Power Systems

MODAN® System Partners – Know-How that Offers Safety

Exact planning – the basis for customer satisfaction

Your MODAN system partner willtake all the time necessary for a tho-rough consultation. These partnersunderstand your needs and will offeryou the best solution for your requi-rements. The MODAN system partners make use of powerful tools to design theswitchboard systems and create thedocumentation, and can offer a highlevel of flexibility during the planningstage. This means that any modifica-tions can be implemented at shortnotice.

Careful manufacturing – thebasis for MODAN® quality

MODAN system partners are special-ly trained in the product and can fitand wire the panel cabinets to yourspecific requirements.This ensures that you will be supp-lied with a state-of-the-art assemblyin proven quality that is type-tested(TTA).

Tested safety you can rely on

Every withdrawable unit, removablecompartment and every section undergoes a specific final test. The thorough testing of the power distribution system maximises safety for persons and system, and ensures the availability of the power supply.

MODAN® System System description 2

Product features 2Application notes 6Mounting and combination options 7Functional areas and section depths 8Technical data 9

Space requirement 10

MODAN P Incomers, outgoersand couplers up to 6300 A 10

MODAN R Plug-in outgoersup to 630 A 12

MODAN W Drawer-unit outgoersup to 630 A 14

MODAN G Power factor correctionand service outgouers 15

Planing notes PROFIBUS fieldbus communication 17

Arc-fault protection in MODAN system 19

Planning examples 22

Heat dissipation 26

Weights 29

Supplementary information Planner check list 30

Type-tested assemblies to IEC/EN 60439-1 31

Reorganisation IEC/EN 60439 32

Internal partitioning 33

Rated values (Glossary) 35

Dimensioning of systems 36

Rated/short-circuit currentof standard transormers 37

Installation notes 38

1

MODAN® System

Contents

01/10 TB46-015E

2

MODAN® System

System description

01/10 TB46-015E

Product features

- Clear segregation into functional areas

- Enclosure for combiantion or-standalone mounting

MODAN® P

from page 10

- Cable entry from top and/or bottom

- End sections can be expanded asstandard

MODAN® R

from page 12

-- All components fitted as TypeTested Assembly (TTA)

- Main busbar located at rear

Enclusure

-Degree of protection IP30/31, IP54

- Internal separation Form 1up to Form 4b

- Plug-in square-section frame system

- Steel thickness 1,5 mm, door 2 mm

- Door opening angle approximately 135 degrees combination mounting 160 degrees stand alone or end sections

- Frame-and mounting elements are zinc-plates or hot-galvanized

- Cladding with powder-spray paintfinish in RAL 7032, pebble grey or RAL 7035 light grey

MODAN R, dropper bars

for SE removable compartments

Ie 1000 A

Icw 36 kA, 1 s

for SASILplus switch fuse units

Ie 1800 A

Icw 65 kA, 1 s

3

MODAN® System

System description

- Type-tested connections for LD, LX and BD busbartrunking system up to 5000 A

- Type-tested PROFIBUS-communication

MODAN® W

from page 14

- Arc-fault protection system

- All system variants can be combined

MODAN® G

from page 15

MODAN W, dropper bars

Ie 1250 1600 2 x 1000 2 x 1600 A

Icw 53 53 53 53 kA, 1 s

Main busbar systems

Located at the rear, up to 2 systems can be fitted

Ie 1600 1600 2000 2000 2500 2500 3200 4000 4000 5000 5000 6300 A

Icw 50 65 80 80 80 80 100 100 100 100 100 100 kA, 1 s

Cu AI Cu AI Cu AI Cu Cu AI Cu AI Cu

EMV:

Ie 1600 2000 2300 2950 3500 - - - A

0,1 m 163 158 181 199 208 - - - µTRMS1,0 m 37 38 44 41 53 - - - µTRMS

ARCON®

01/10 TB46-015E

4

MODAN® System

System description

01/10 TB46-015E

MODAN® P

Incomers, outgoers and bus-coupler

sections for circuit-breakters from

630 to 6300 A (page 10)

- Fixed mounting or withdrawable

- Connection with cable or LD/LX or BD busbar trunking systems(page 11)

MODAN® R

Sections for motor control, power out-

goers and incomers with removable

compartments up to 630 A (page 13)

- Removable compartments can beexchanged while the system is live

- Incoming current and controlcurrent are plugged in

Sections for switch-fuse units

up to 630 A (page 12)

- Units can be exchanged while thesystem is live

- Incoming current and controlcurrent are plugged in

- Also available as fixed units (cannotbe exchanged when live)

5

MODAN® System

System description

01/10 TB46-015E

MODAN® W

Sections for motor control and

power outgoers with drawer-units up

to 630 A (page 14)

- Drawer-units can be exchangedwhile the system is live

- Main current and controlcurrent are plugged in

MODAN® G

section for power factor

correction (page 15)

- With 7 % choke up to 500 kvar

Sections for unrestricted design

(page 16)

- Service outgoers section

- Automation engineering

- Outgoers as required up to 630 A

6

MODAN® System

System description

01/10 TB46-015E

Application notes

MODAN R (removable compartments) and MODAN W (withdrawable

units) as typical variants for the manufacturing and processing indu-

stries

The modern drawer-unit and removablecompartment engineering ensures thehighest levels of flexibility and availabili-ty. Busbar areas, component/functionalareas and coupling areas are separatedfrom each other. Internal partitioning toForm 4b is possible. Adaption of theswitchgear system to changed opera-ting conditions is easy to implementwithout having to shutdown a section.The functional units can be easilyexchanged and extended when live upto a current of 630 A. All drawer-unitsare equipped with an operating, testand disconnected position. User opera-ting faults are thus eliminated guarante-eing personnel safety and system pro-tection. Integral protection systemsreduce the level of system downtimesto an absolute minimum.For aggressive and sulphurous atmos-phere the main contacts can be gold-plated.

7

MODAN® System

System description

01/10 TB46-015E

Function Circuit-breakers Switch-fuse Motor circuits Power factor

up to 6300 A combination and power correction, service

units outgours up distribution

up to 630 A up to 630 A outgoers

MODAN P

Fixed mounted page 10Withdrawable

MODAN R

Removable compart- page 12 page 13ment (fixed installation)

MODAN W

Drawer-units page 14 page 14

MODAN G

Fixed mounting page 15, 16

Section depth

Sections with the same depth can be combined or mounted side-by-side as required.

- Section depth 600 mm up to 3200 A main busbars- Section depth 800 mm from 4000 - 6300 A main busbars- Section depth 1000 mm for incomers with 5000 A or 6300 A circuit-breakers. The sections will be combined with 800 mm deep sections; flush rear covers.

Busbar trunking system

The LD, LX and BD busbar trunking systems can be connected up to max. 6300 A to MODAN P sections with curcuit-brea-kers up to max. 6300 A.

ARCON arc-fault protection system

The ARCON arc-fault protection system can be combined with all system sections.

Profibus/Profimod fieldbus communication

Fieldbus communication with Profibus/Profimod can be integrated into all system sections.

Mounting options

Combination options

8

MODAN® System

System description

01/10 TB46-015E

Functional areas and section depth

600 800

1200 1600

200600

800

400800

1000

Busbarrated current Ie

Installation at a wallor free standing in a room(side view)

Installation back-to-back(side view)

Installation of corner section(plan view)

Busbar area

< 3200 A 4000 - 6300 A

Component mounting area Horizontal wiring area

9

MODAN® System

Technical Data

01/10 TB46-015E

Standards and regulations IEC/EN 61439, VDE 0660 Teil 600

Climatic proofing Damp heat, constant, to IEC 60068-2-78Damp heat, cyclic, to IEC 60068-2-30

Ambient temperature oC -5 to +40, average over 24 hours: +35

Degree of protection IP30/31, IP54 to IEC/EN 60529/DIN 40050

Installation requirements Indoor installation to IEC/EN 60439

Arc-fault test To EN 60439-1 supplement 2*VDE 0660 Part 500 from 10/97 for testing the behaviour with internal malfunctions of low-voltage switchgear combinations ... 65 kArms, to 300ms

Fieldbus communication PROFIBUS; EN 50 170 up to 1.5 MBaud

Electrical data

Rated insulation voltage Ui V 1000 ~/1200 = to IEC/EN 60947-1

Rated operational voltage Ue V 690 to DIN IEC 60038

Rated frequency Hz 40 - 60

Rated current of the A 1600 2000 2500 3200 4000 5000 6300main busbars In

Rated short-time withstand current kA 65 80 80 100 100 100 100Icw 1 s

Rated short-time withstand current kA 80 100 100 100 100 100 100Icw 0.1 s

Rated current of the A 900 1000 1250 1600 2 x 1000 2 x 1600 1800dropper bars In

Rated short-time withstand current kA 38 36 53 50/53 53 53 65Icw 1 s

Mechanical data

Material/steel thickness mm Sheet-steel/cladding: 1.5; door: 2

Surface treatment Hot-galvanized or structured powder spray paint on epoxide polyester base

Colour of painted RAL 7032 pebble grey or RAL 7035 lightgrey, to DIN 43656/light texture, surface paint thickness ≥ 40µm, gloss

Resistance to chemicals Resistance to paraffin and petrol, in accordance with MCW (maximumdecontaminability concentration at workplace) diluted acids 10 % in accordance with

MCW/decontaminable

10

MODAN® System - MODAN P®

Space requirement

01/10 TB46-015E

Power distribution

Circuit-breakers, 630 - 6300 A, fixed and withdrawable

Distribution sections for incomers, power outgoers and couplers

Degrees of protection:IP30/31, IP54

Section dimensions:Height: 2200 mmWidth: see tableDepth: see table

Mounting options:Circuit-breaker/switch-disconnector

Mounting individually:Free compartment can be equipped with control components or quenching deviceof the are-fault protection system ARCON

Option:PROFIBUS fieldbus communication

Cable connection area:Top or bottom as required

3 pole switching 4 pole switching Rated short-circuitRated current Fixed mounting or Section depth Section width Section width breaking capacity

withdrawable Icn (Icu = Ics)

A mm mm mm kA

630 - 1600 fixed or withdrawable 600/800 400/6001) 600 65 (only Icu)

800 - 3200 fixed or withdrawable 600/800 600 800 100

4000 withdrawable 800 1000 1000 100

5000 - 6300 withdrawable 1000 1200 1400 130 (only Icu)

Double assembly for incomers/outgoers (2 circuit-breakers per section)

2 x 630 - 1000 fixed or withdrawable 600/800 600 - 65 (only Icu)

2 x 1250 - 1600 fixed or withdrawable 600/800 800 - 65 (only Icu)

1) Alternative with bigger cable connection area

11

MODAN® System - MODAN P®

Space requirement

01/10 TB46-015E

Cable terminations

Rated current 800 - 6300 A

Rated current Number of cables Cross-section for multiple-

per phase core copper conductors

A mm²

630 - 1600 6 max. 300Section width 400 mm

800 - 3200 10 max. 300

4000 - 5000 15 max. 240

6300 19 max. 240

Terminations for busbar trunking system

Rated current 500 - 5000 A

Rated current Busbar trunking system

A

500 - 1250 BD2

800 - 5000 LD/LX

Derating at an average ambient temperature of 35 oC

Rated current IP30/31 IP54 IP54 with ARCON

A Reduction factor Reduction factor Reduction factor

1000 - 1250 1.0 1.0

1600 - 2000 0.91 0.85

2500 1.0 0.9

3200 0.85 0.75

4000 0.93 0.8 0.75

5000 1.0 0.86 0.78

6300 0.86 0.75 0.63

12

MODAN® System - MODAN R®

Space requirement

01/10 TB46-015E

Fuse combination units up to 630 A, fixed mounting and removable compartments,

3 pole switching

Section for SASILplus switch fuse unit

Degrees of protection: IP30/31

Section dimensions:Height: 2200 mmWidth: 1000 mm, extended cable

connection area forcomfortable cableinstallation 1200 mm

Depth: 600, 800 mm

Mounting options:Fuse combination units with3 or 4 pole switching

Component mounting area:Height: 3 x 450 mm (3 x 18 HU)

HU = height unit (1 HU = 25 mm)

Cable connection area:Cable entry on the right-hand sidefrom the bottom or the top

Rated current Module height Number per section

A/NH size mm SSL, 3p SSL, 4p SSKL

160/00 SSL 50/SSKL 75 27 12 24

250/1 75 18 9 24

400/2 150 9 3 12

630/3 150 9 3 12

Double-break fuse combination units, fixed or removable

Rated current IP31

A/NH size Reduction factor with maximum components fitted

160/00 0.44

250/1 0.44

400/2 0.5

630/3 0.32

Derating at average ambient temperature of 35 oC up to 40 oC max.

13

MODAN® System - MODAN R®

Space requirement

01/10 TB46-015E

SE removable unit for motor starters up to 90 kW and power outgoers and incomers up to

630 A, 3 and 4 pole switching

Removable compartments can be exchanged while the system is live

Distribution sections for SE removable compartmentsDegrees of protection: Component mounting area:IP30/31, IP54, Height: 1875 mmwith door paneel IP30/31 (15 x 125 mm = 15 HU)

Sections dimensions:Height: 2200 mm HU = height unit (1 HU = 125 mm)Width: see table Cable connection area:Depth: 600, 800 mm Cable enty on the right-hand side

from the bottom or the top

Mounting options:removable compartments withcircuit-breakers, motor-protectivecircuit-breaker, switch-disconnectors, low-voltage h.b.c.fuse switch-disconnectors,PROFIBUS fieldbus communication

Rated current Height of removable Width of removable Number per Section width

compartment compartment section

A mm HU mm mm

160/401) 125 1 400, 600 15 800, 10001)

250/1601) 250 2 400, 600 7 800, 10001)

6302) 375 3 600 5 800, 10001)

1) 4 pole switching 2) 3 pole switching only

Power outgoers and incomers 3 or 4 pole

Motor rating with circuit Height of removable Width of removable Number per Section width

breakers kW (400 V/AC-3) compartment compartment section

Direct-on-line Reversing- Star-delta-

starter starter starter mm HU mm mm

0 - 18.5 0 - 11 0 - 11 125 1 400, 600 15 800, 10001)

> 18.5 - 30 > 11 - 30 > 11 - 30 250 2 400, 600 7 800, 10001)

> 30 - 45 > 30 - 45 > 30 - 45 250 2 600 7 800, 10001)

> 45 - 90 > 45 - 75 > 45 - 90 375 3 600 5 800, 10001)

1) Increased cable connection area for user friendly fitting / installation

IP30/31 IP54

Reduction factor with maximum components fitted Reduction factor with maximum components fitted

0.95 0.80

Direct-on-line, reversing and star-delta starters


14

MODAN® System - MODAN W®

Space requirement

01/10 TB46-015E

Drawer-units for motor starters up to 200 kW and power outgoers up to 630 A,

3 and 4 pole switching

Drawer-units can be plugged-in when the system is live

Distribution sections for drawer-unitsDegrees of protection: Component mounting area:IP30/31, IP54, Height: 1875 mm

(15 x 125 mm = 15 HU)

Section dimensions:Height: 2200 mm HU = height unit (1 HU = 125 mm)Width: 1000 mm, enlarged cable

connection area for Cable connection area:comfortable cable Cable entry on the right-hand sideinstallation 1200 mm from the bottom or the top

Depth: 600, 800 mm

Mounting options:drawer-units with circuit-breakers, motor-protective circuit-breakers,switch-disconnectors, switch-fuseunits, PROFIBUS fieldbuscommunication

Rated current Height of Width of No./sectiondrawer-unit drawer-unit

A mm HU mm

63 (only 3 pole switching) 125 1 300 30 (2 x 15)

160 250 2 300 14 ( 2 x 7)

250 250 2 600 7

400 250 2 600 7

630 375 3 600 5

Power outgoers with circuit-breakers or load-disconnect switch, 3 or 4 pole

Motor rating kW (400 V/AC-3) Height of Width of No./sectiondrawer-unit drawer-unit

Direct-on-line Reversing starter Star-delta starter mm HU mm

0 - 18.5 0 - 18.51) - 125 1 300 30 (2 x 15)

> 18.5 - 452) > 18.5 - 301) - 250 2 300 14 (2 x 7)

- - 0 - 18.5 125 1 600 15

> 45 - 75 > 30 - 45 > 18.5 - 553) 250 2 600 7

- > 45 - 75 > 55 - 75 375 3 600 5

> 75 - 200 - > 75 - 160 500 4 600 3

The drawer-unit size can change when used with the SIMOCODE PRO V option. For starter with basic unit at1) 11 to 30 kW2) 30 to 45 kW3) 45 to 55 kW

IP30/31 IP54

Reduction factor with maximum components fitted Reduction factor with maximum components fitted

0.95 0.80

Direct-on-line, reversing and star-delta starters with circuit-breakers


15

MODAN® System - MODAN G®

Space requirement

01/10 TB46-015E

Power factor correction up to 500 kvar

Distribution section for power factor correction

Degrees of protection: IP30/31, IP54 with ventilationSection dimensions:Height: 2200 mmWidth: 1000 mm,

Separate mounting 800 mmDepth: 600, 800 mm

With 7 % choke. Reactive power upto 500 kvar in one section

Reactive power per section Rated voltage 400 V AC 50 Hz

Back-up fuse gl Cable cross-section per phase L1, L2, L3 with

per phase L1, L2, L3 separate mounting without main busbars

kvar A mm²

75 160 70

100 200 95

125 250 120

150 315 185

200 400 2 x 95

250 500 2 x 120

300 630 2 x 185

400 2 x 400 2 x 240

500 2 x 500 4 x 150

Selection table for back-up fuses and connection cables

16

MODAN® System - MODAN G®

Space requirement

01/10 TB46-015E

Service outgoers section

Distribution sections for service distribution outgoers

Degrees of protection: IP30/31, IP54

Section dimensions:Height: 2200 mmWidth: see tableDepth: 600, 800 mm

1 Space unit = 17,5 mm

Number of mounting unit Section width

per section mm

10 600

15 800/1000

Mounting options for mounting units per distribution section

Mounting unit Number of space units Figure

used for: per mounting unit

Miniature circuit-breakers, mounting depth 47 mm 3 x 12 = 36 A

Contactors, mounting depth 110 mm 3 x 12 = 36 A

Terminal blocks 2 x 18 = 36 B

Circuit-breakers and switch-disconnectors up to 36 C250 A, low-voltage h.b.c. fuse switch-disconnectors up to size 2

Circuit-breakers, switch-disconnectors 72 on 2 mounting units Dup to 400 A, meters

Circuit-breakers, switch-disconnectors 108 on 3 mounting units Eup to 630 A

Space requirement per mounting unit

Figure A

Figure B

Figure C

Figure D

Figure E

17

Planning notes

PROFIBUS fieldbus communication

01/10 TB46-015E

PROFIBUS-DP master cardPROFIBUS-DP data plug withbus termination resistorBus stationSpur-line distributor (only MODAN R, W)PROFIBUS-DP-Repeaterwith bus terminating resistorBus terminating modulePC for parameterization and diagnosticsBus terminating resistor (integrated)

Notes on PROFIBUS-DPEach PROFIBUS-DP line provides• max. 10 segments• max. 122 PROFIBUS-DP slavesEvery PROFIBUS-DP segment provides• max. 30 PROFIBUS-DP slaves• a maximum length of all spur lines (dependent upon data transfer rate)• a maximum conductor length (dependent upon data transfer rate)

Data transfer rate Max. length of all spur Max. length of akBit/s lines in a segment in m segment in m

9.6 - 93.75 96 1200187.5 75 1000500 30 4001500 10 200The maximum data transfer rate of a line is determined by the slowest segment.The maximum data transfer rate of a segment is determined by the cable length(length between the bus termination resistors) and the total length of all spur linesof the segment.The tested data transfer rate for any field device is 1.5 MBaud. Transfer rates above1.5 MBaud are only possible in "fixed" installations.Interruption free operation of the fieldbus communication as well as exchange ofthe removable compartments and drawer-units, and with modifications within theswitchgear system when using spur-line distributors.A bus terminating resistor is connected at the start and the end of each PROFI-BUS-DP segment (see overview).The number of PROFIBUS-DP slaves per PLC and PROFIBUS-DP master carddepends on the• PLC-CPU• PROFIBUS-DP master card

For further details, refer to the respective documentation of the manufacturer.

PROFIBUS-DB bus design

a

b

c

d

h

h

e

f

g

d

18

Planning notes

PROFIBUS fieldbus communication

01/10 TB46-015E

1. Simple installation

With installation over multiple sections, a repeater is applied afterthe maximum number of users per section is achieved and a bustermination resistor is also used at the end of the segment.

2. Enhanced interference immunity

In order to limit bus interference to the affected section, eachMODAN W section receives a repeater and a bus termina-

tion. Up to 9 repeaters can be connected in series.

3. Usage in EMC critical environments

Optical-fibre converters are used in order to limit EMCinfluence in the entire network or to bridge large distancesbetween subnetworks (3 km and more). They convert thebus signal from electrical PROFIBUS interfaces (RS485) to

optical PROFIBUS interfaces and vice versa. The optical-fibreconverters can be implemented with line-based, star-basedor ring-based topologies. Redundant connections are alsoallowed.

Optical-fibre converter

Bus termination resistor

Repeater (both bus terminations off)

Repeater (one bus termiantion on)

Repeater (both bus terminations on)

DP Slaves

Note:

Observe the max. data transfer ratewhen spur lines are used!

Possible variants for interfacing to PROFIBUS

19

Planning notes

Conventional arc-fault protection in MODAN system

01/10 TB46-015E

- The most important aim should beto prevent arcs from occurring by appropriate construction measu-res, or to limit their duration.

- In the event that a fault results in an arc in the switchgear assembly, the highest possible degree of

protection for personnel must be aimed for.

Aims of arc fault protection to IEC 60439-1 Section 7.5.1

Conventional arc fault protection

Conventional arc fault protection mea-sures prevent the occurrence of arcfaults.

Internal separation by means of parti-tions and covers up to Form 4b, provideprotection against electric shock toIP30 degree of protection.

Personnel protection (to EN 60439-1 supplement 2*VDE 0660 part 500from 10/97)

Personnel protection up to 65 kA/100ms is a basic feature ot the MODANSystem distribution section in IP30. Thepersonnel protection testing procedurepermits destruction within the systemand are not considered.

Test data

Short circuit current 65 kAPower factor cos ϕ < 0,2Generator switchon time t = 300 msRated voltage Ue = 425 VDegree of protection IP 30Criteria 1 - 5 passed

Necessary distribution sectionequipment:

Distribution sections must be equippedwith current limiting PKZ… and NZM…circuit-breakers with a switching capaci-ty > 65 kA/400 V or IZM circuit-brea-kers with a switching capacity > 65kA/400 V.

Distribution circuit protection(conformt to draft EN 60439-1 supple-ment 2*VDE 0660 part 500 from 03/01)

- with sectional limitation of the effects (arc-fault protected cladding of the sections)

- with compartmental limitation of the effects (arc-fault protected cladding of the functional areas)

Distribution circuit protection conformto draft EN 60439-1 supplement 2*VDE0660 part 500 from 10/97).

Test data

Short circuit current 50 kAPower factor cos ϕ < 0,2Generator switchon time t = 300 msRated voltage Ue = 425 VDegree of protection IP30

Measures for arc fault protection with the MODAN power distribution system

20

Planning notes

Arc-fault protection with ARCON® in MODAN system

01/10 TB46-015E

The use of the ARCON arc-fault pro-

tection system implements the hig-hest level of protection for personnel

and systems currently available. TheARCON arc-fault protection system hasthe task of limiting the effects and

energy of the resulting arc-fault andquenching the ard. Very fast shutdowntimes are achieved.

Measures for extended arc-fault protection in the MODAN switchgear system

Secondary arc-fault protection measures limit the effects

VdS (German insurance association) recognised ard-fault protection system

Description of function ARCON®

The arc fault protection system

ARCON consists of light and currentsensors, the electronic evaluation unitsand the quenching device.

The ARCON light sensors, based onfibre optic cables, allow the main bus-bars and dropper bars as well as busbarconnections and cable connectionsystems over the entire length, to bemonitored.

One ligth sensor is required on everymain busbar system for each section.

The arc current is monitored by currenttransformers placed before every inco-ming circuit-breaker. Conventional C.T.swith optional 1 A or 5 A secondary cur-rents are used.

In case of an arc fault the emitted lightand the arc current is monitored andevaluated by the arc fault protectionsystem ARCON. The quenching deviceand the incoming circuit-breaker areactivated.

The ARCON shorts the arc fault effec-ted main busbar system inside 2 msand takes the destructive energy of thearc. The arc fault is quenched.

The three phase short-circuit caused bythe quenching device is switched off bythe incoming circuit-breaker. All inco-ming circuit-breakers are, as back-up,tripped out.

ARCON® arc-fault protection

system

The effects of an arc remain limited tothe foot points of the arc. The system isready for operation after the cause ofthe fault has been eliminated and thequenching device has been exchanged.

Personnel protection which is stipula-ted by EN 60439-1 supplement 2*VDE0660 part 500 (03/2001) is achieved bythe installation of the ARCON arc faultprotection system, which is comprisedof sensors, evaluation unit and quen-ching device.

System function protection

The term system function protectionoriginates from Moeller. System func-

tion protection means that the switch-gear system can be immediately reope-rated after it has shutdown (arc-quen-ched) due to an arc-fault after the causeof the arc-fault has been eliminated.Exchange of distribution system parts,components and equipment in theswitchgear power section resultingfrom the effect of an arc-fault is notnecessary. Complete functional end-urance of all system parts and equip-ment is achieved.

Test standard

EN 60439-1 supplement 2*VDE 0660part 500 (10/1997), Draft EN 60439-1 supplement 2*VDE0660 part 500 (03/2001)

Test data

Short-circuit current 100 kARated voltage Ue = 690 VDegree of protection IP30

Detection, evaluation and quenching ofthe arc-fault in 2 ms.

Rated short-time withstand current ofthe quenching device

Icw = 65 kAeff, 500 ms,UP = 725 VIcw = 100 kAeff, 150 ms, UP = 725 VIcw = 150 kAeff, 100 ms, UP = 440 VLimitation to base points

ARCON-Master ARC-EM

ARCON quenching device ARC-AT

21

Planning notes

Declaration of conformity for ARCON

01/10 TB46-015E

22

Planning notes

MODAN system planning example

01/10 TB46-015E

Transformer 1:2000 kVA, Ue = 400 V, uk = 6 %Main busbar 1: Icw = 50 kAdegree of protection IP30switching 3 poles

1 x incoming circuit-breaker 3200 A, withdrawable1 x outgoing circuit-breaker 2000 A, withdrawable1 x coupling switch 1600 A downstream of main busbar 2,

withdrawable3 x fuse-load switch units 400 A2 x fuse-load switch units 630 A3 x reserve locations for fuse-load switch units

Transformer 2:1250 kVA, Ue = 400 V, uk = 6 %Main busbar 2: Icw = 50 kAdegree of protection IP30switching 3 poles

1 x incoming circuit-breaker 2000 A, withdrawable4 x power outgoers 40 A, removable compartments2 x power outgoers 63A, removable compartments3 x power outgoers 160 A, removable compartments9 x switch-fuse units 160 A6 x switch-fuse units 250 A3 x switch-fuse units 400 A10 x DOL starter 7.5 kW, withdrawable4 x DOL starter 30 kW, withdrawable

3200 A 2000 A 3 X 400 A 2 X 630 A

1600 A

L1, L2, L3, PEN, 3200 A

L1, L2, L3, PEN, 2000 A

2 X 63 A

3 X 160 A

4 X 40 A

6 X 250 A

3 X 400 A

9 X 160 A

4 X 30 kW

10 X 7,5 kW

2000 A

SectionNo. 1 2 3 4 5 6 7 8

Selection table: Page10 10 10 13 12 14 10

depth 600 mm

23

Planning notes

PROFIBUS planning example

01/10 TB46-015E

Optical-fibre converter

Bus termination resistor

Repeater

DP Slaves4 x IZM-XCOM-DP3 x NZM-XDMI612 and NZM-XDMI-DPV114 x PROFIMOD ZWK

Spur line distributor

Section No.: 1 2 3 4 5 6 7 8

Selection table: Page10 10 10 13 12 14 10

depth 600 mm

24

Planning notes

ARCON system planning example

01/10 TB46-015E

1 x ARC-EM Evaluation unit; two-channel (monitoring of 2 separatebusbar sections); for door mounting

2 x ARC-AT ARCON quenching device

4 x ARC-EL3 ARCON Slave for 3 longitudinal light sensors

8 x ARC-SL… Longitudinal light sensors

2 x ARC-EC1 ARCON slave for a current converter set

2 x Standard current transformer/measurement converter set

Connection cable

Arc fault protection system ARCON

ARC-EM

ARC-AT

SectionNo. 1 2 3 4 5 6 7 8

Selectin table: Page10 10 10 13 12 14 10

If more than two sections are in the system, further evaluation units must be used. They are connected together for commu-nication purposes.

depth 600 mm

25

Planning notes

ARCON device selection system

01/10 TB46-015E

ARC-EM Electronic evaluation unit; connection of up to max. 16 diffe-ring slaves via a bus cable (max. 100 m). A current transfor-mer set can be directly connected to the master. Supply voltage 48 - 265 V AC/DC 50/60 Hz. This system must be supplied with a secure supply voltage (UPS or a power supply which is independent of the supply voltage). The ARC-EM evaluation unit can monitor one or two busbar sections. In the event of an arc-fault, the evaluation unit sends the quenching signal to the ARC-AT quenching device and the switch-off signal to the circuit-breaker. The device should be door mounted.

ARC-AT The quenching device should be installed in the direct vicinity of the incoming circuit-breaker. In the event of an arc-fault, the ARC-AT quenching device produces a three pole dead short circuit parallel to the source of the fault. The peak arc voltage required to form the arc on the busbar drops below the required level and the arc is quenched. The three pole short-circuit created by the quenching device will be recognized by the circuit-breaker.

ARC-EL3 ARCON slave ARC-EL3 for 3 longitudinal ARC-SL…light sensors

ARC-SL… ARC-SL… longitudinal light sensor. A light sensor is installed per section and busbar system.

ARC-EC1 ARCON Slave ARC-EC1 for a current transformer (one transformer per phase). A maximum of 8 current slaves can be used. 1 A or 5 A current transformer connection.

Standard measurement transformer. Is Installed upstream of the incoming circuit-breaker.

Arc fault protection system ARCON

ARC-EM

ARC-AT

Arc-fault protection system ARCON, mounted in MODAN system

26

Planning notes

Heat dissipation

01/10 TB46-015E

Calculation of effective heat

dissipation

Note:The installed losses per section arerequired only where the overall heatdissipation of the switchgear assemblymust be determined, such as for therating of air-conditioning or ventilatedsystems in switch rooms.

Effective heat dissipation:

Heat dissipation at rated current ofthe circuit:

Effective heat dissipation taking

into account the rated diversity α:

Characters used in the formulea:

P = Overall heat dissipation

Pn = Heat dissipation at rated current of circuit device

Pe = Heat dissipation at rated current of circuit

Pw1…n = Effective heat dissipation of the group of services

In = Rated current of the device

Ie = Rated current of the circuit

α = Rated diversity factor

Rated current of Heat dissipation in W Heat dissipation in W

circuit-breakers Fixed mounted withdrawable

A

630 36 50

800 45 90

1000 70 140

1250 110 220

1600 180 360

2000 190 380

2500 200 500

3200 320 800

4000 380 750

5000 400 1000

6300 620 1550

Heat dissipation

MODAN P: Incomers / outgoers / couplers, 630 - 6300 A

27

Planning notes

Heat dissipation

01/10 TB46-015E

Rated current Heat dissipation

of circuit-breakers

A W

125 38

160 43

250 57

400 52

630 130

MODAN R and W: Incomers and outgoers with circuit-breakers up to 630 A

AC-3 motor rating at 400 V Heat dissipation

kW W

11 10

18.5 20

30 20

45 40

75 60

110 70

160 80

200 130

MODAN R and W: Motor starters

Fuse size/rated current Power loss in W

A Double break

00/160 80

1/250 150

2/400 230

3/630 410

MODAN R: Outgoers with SSL and SSKL switch-fuse units with h.b.c. fuses up to 630 A

28

Planning notes

Heat dissipation

01/10 TB46-015E

MODAN G: Power factor correction

Secton width/degree of protection Heat dissipation

W

600 mm/IP30/31 max. 750

600 mm IP54 max. 400

800 mm/IP30/31 max. 900

800 mm/IP54 max. 550

1000 mm/IP30/31 max. 1100

1000 mm/IP54 max. 700

MODAN G: Service distribution outgoers

Rated current Heat dissipation

A W/m

1600 120

2000 178

2500 211

3200 458

4000 356

5000 422

6300 916

Main busbar, heat dissipation

MODAN Rated current Heat dissipation

A W

W, R1) 800 270

W, R1) 1000 220

W, R1) 1400 590

W, R1) 1600 410

R2) 1800 232

1) For switch-fuse units SSKL2) For switch-fuse units SSL

Dropper busbars, heat dissipation

Heat dissipation

W

With choke 8/kvar

Without choke 2/kvar

29

Planning notes

Weights

01/10 TB46-015E

Weight for distribution section with max. equipment fitted

All weight details are based on weights of representative sample sections.

MODAN P: Incomer sections/Outgoer sections

1600 A 250 kg2500 A 400 kg3200 A 590 kg

MODAN R: Sections with switch-fuse units

500 kg

MODAN W: Power and motor distribution sections

580 kg

MODAN G: Service distribution sections

250 kg

MODAN G: Power factor correction sections (with choke)

600 kg

30

Supplementary information

Planner check list

01/10 TB46-015E

Project: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Date: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Customer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Planer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Telephone: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fax: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

e-mail: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation location : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Company type: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Degree of protection: IP Internal partitioning: Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum permitted distribution board dimensions Room height

W x H x D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mm . . . . . . . . . . . . . . . .mm

Transport dimensions

W x H x D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .mm

System configuration:

TN-C TN-S TN-C-S TT IT

PEN- or N conductor cross-section half full

Transformer power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . kVA

Rated incoming current: . . . . . . . . . . . . . . . . . . . . . . . . . . . . A

Frequency: . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hz

Rated operational voltage: . . . . . . . . . . . . . . . . . . . . . . . . . . . . V

Ambient temperature: . . . . . . . . . . . . . . . . . . . . . . . . . . . . o C

Rated short-time withstand currentof the main busbars Icw, 1 s . . . . . . . . . . . . . . . . . . . . . . . . . . . . kArmsCable connection Busbar connection

PROFIBUS DP transfer rate 187.5 kBaud/500 kBaud

1.5 MBaud

Arc fault protection conventional

ARCON arc-fault protection system

Incomers, outgoers and couplings from fixed mounted withdrawable630 - 6300 A

Outgoers up to 630 A fuseless fused

Outgoers versions up to 630 A fixed mounted removable drawer-unitcompartment

General:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31


Type-tested assemblies to IEC/EN 60439-1

01/10 TB46-015E

The safety standard for low-

voltage switchgear combina-

tions

The requirement placed on low-voltageswitchgear in respect of heat dissipa-tion, higher packing densities, control ofhigh short-circuits and insulation capaci-ty have increased considerably over thelast few years.

Rated current of up to 6000 A and highshort-circuit ratings with rated short-time withstand currents up to 100 kAare no longer unusual.

The compact design, not to mentionthe integration of electronic compo-nents into supply networks subject topowerful harmonics, requires preciserating and testing of the switchgearassembly.

Only switchgear assemblies whichcomply with current standards fulfiltoday’s safety regulations.

Current standars are:

IEC/EN 60439-1, VDE 0660 part 500;

Low-voltage switchgear combinations

Type-tested and partially type-testedassemblies

These standards are identical in

terms of content they show two

options for the manufacturing of

switchgear assemblies:

- Type-tested assembly (TTA)- Partially type-tested assemblies

Type-tested assembly (TTA)

In assemblies of this sort, all compo-nents are type-tested separately and intheir functional state, including all elec-trical and mechanical connections.

Where other devices are used for swit-ching and protection, it is a requirementthat the technical data are at least thesame or better (argument by analogy).

Partially type-tested assemblies

Both type-tested and non type-testedcomponents are comprised in this typeof assembly. Non-type-tested compo-nents must be based on type-testedones.

Proof required of adherence to standards

Requirements Proof of TTA produced by Proof of PTTA produced by

1. Temperature-rise limit Test Test or extrapolation

2. Insulation resistance Test Test

3. Short-circuit rating Test Test or extrapolation

4. Efficiency of protective conductor Test Test

5. Clearance and creepage distances Test Test

6. Mechanical function Test Test

7. IP degree of protection Test Test

For type-tested assemblies, all proof isproduced by testing.

With partially type-tested assemblies,there are two exceptions:

a) Proof of compliance with temperatu-re-rise limits. For switchgear with a maximum input current of 3150 A, this proof can also be provided by means of extrapolation where calcu-lation is done in accordance with DIN VDE 0660 part 507.

b) Proof of the short-circuit rating is not required for switchgear assemblies which are protected by a current-limi-ting protective device and where the let-through current < 15 kA.

Where an extrapolation or calculation toDIN VDE 0660 part 509 is necessary,this is always based on values derivedfrom type-tested busbar systems.

Only where all information has beenclearly produced can the terms type-tested low-voltage switchgear and con-trolgear assembly (TTA) and partiallytype-tested assembly (PTTA) be used.These assemblies thus comply withcurrent safety requirements.

MODAN as type-tested low-vol-tage switchgear and controlgearassemblies (TTA)

The type-testing is carried out in inde-pendent, accredited test laboratoryI2PS.

MODAN provides tested and verifiablesafety with consistently high quality.


Reorganisation IEC/EN 60439

3201/10 TB46-015E

Relevant standards up to now

IEC/EN 60 439 -1

new IEC/EN 61 439

The new standard series IEC/EN 61 439 consists of the following listedparts

IEC / DIN EN 61 439 -1

(= VDE 0660 part 600 -1)

⇒ Low-voltage switchgear and control-gear assemblies

⇒ Part 1: General rules

IEC / DIN EN 61 439 -2

(= VDE 0660 part 600 -2)


⇒ Part 2: Power switchgear and controlgear assemblies

The parts -1 and -2 are already validIEC standards. The transition periodswere determined by the national stan-dard commissions

The parts -1 and -2 replace the contem-porary IEC 60 439 -1 and so VDE 0660part 500

IEC / DIN EN 61 439 -3

(= VDE 0660 part 600 -3)


⇒ Part 3: Distribution boards

Replaces IEC 60 439 -3 and so VDE0660 part 504

Distribution boards up to 250A =>Unskilled persons have access for theiruse

IEC / DIN EN 61 439 -4

(= VDE 0660 part 600 -4)


⇒ Part 4: Assemblies for construction sites

Replaces IEC 60 439 -4 and soVDE0660 part 501

IEC / DIN EN 61 439 -5

(= VDE 0660 part 600 -5)


⇒ Part 5: Cable distribution cabinets


Distribution boards up to 250A =>Unskilled persons have access for theiruse

IEC / DIN EN 61 439 -6

(= VDE 0660 part 600 -6)


⇒ Part 6: Busbar trunking systems


33


Internal partitioning

01/10 TB46-015E

Forms of internal partitioning

to IEC/EN 60439-1

Low-voltage switchgear assemblies canbe divided by means of partitions orbarriers into seperate compartments orenclosed protected spaces. The aim offorming seperate compartments orenclosed protected space which con-tain the funtional units is:

Form 1

Possible with MODAN P, R, W and G

- No internal separation

Form 2a

Possible with MODAN P, R, W and Gwith Form 2b

- Separation of busbars from the functional units

- The terminals of external conductors do not need to be separated from oneanother.

Form 2b

Possible with MODAN P, R, W and G

- Separation of busbars from the functional units

- The terminals for external conductors do not need to be separated from the busbars

- Protection against direct contact with hazardous parts belonging to the functional unit (degree of protection must be at least IP XXB).

- Limitation of possibility of fault arc occurrence.

- Protection against the passage of solid foreign bodies from one functio-nal unit into an adjacent one (degree of protection shall be at least IP 2X).

Typical forms of internal separation aredifferentiated depending on how thecompartment or subsection is construc-ted:

34


Internal partitioning

01/10 TB46-015E

Form 3a

Possible with MODAN P, R1) and Wwith Form 3b

- Internal partitioning between busbars and functional units as well as separation of functional units from one another

- The terminals of external conductors do not need to be separated from one another.

Form 3b

Possible with MODAN P, R1) and W

- Separation ot the terminals for external conductors from functional units, but not from one another

- The terminals for external conductors do not need to be separated from the busbars

Form 4a

Possible with MODAN P, and R1)

- Internal separation between busbarsand functional units as well as functional units from each another, including the terminals for external conductors which are an integral part of the functional unit

- Terminals for external conductors which are an integral part of the functional unit

Form 4b

Possible with MODAN P and R1)

- Internal separation between busbars and functional units as well as functional units from each another, including the terminals for external conductors which are an integral part of the functional unit

- Terminals for external conductors which are not an integral part of the functional unit, which however are in an individual, separate, enclosed protected space or compartment.

The form of separation and higherdegrees of protection (where greaterthan IP2X or IPXX B) shall be agreedbetween the manufacturer and the enduser. Internal separation is used for theprotection of personnel and of thesystem where work is being carried outon the switchgear assembly, and where

for operational reasons, the switchgearassembly cannot be switched off.Depending on operational require-ments, the distribution sections canoptimally be designed with variousForms of separation. Distribution sec-tions, which permit straightforwardremoval of functional units (such as

those with withdrawable modules), areequipped as standard with a higherform of separation, such as Form 3b,for example. Separation in accordancewith Form 2b, i.e. separation betweenbusbars and functional units, is recom-mended in every case.

1) only with fuse-switch units SASIL SSL and SASIL SSKL

35


Rated values

01/10 TB46-015E

Rated values

Rated values in accordance withIEC/EN 61439-1 are specified by manu-facturers of low-voltage switchgear andcontrolgear assemblies. These ratedvalues apply for specified operatingconditions are characterize the applica-tion of the switchgear assembly. Therated values must be the basis for coor-dination of the equipment and/or forthe switchgear assembly.

Rated short-time withstand current (Icw)

IEC/EN 61439-1; 3.8.9.3, 5.3.5

As r.m.s. value of the short-circuit cur-rent, the rated short-time withstandcurrent characterizes the thermalstrength of a circuit in a switchgearassembly during short-time loading. Therated short-time withstand current isnormally calculated for a duration of 1s;time values other than this must bespecified. Rated short-time withstandcurrent ist stated for the distribution-and/or main busbars of a switchgearassembly.

Rated peak withstand current(Ipk)

IEC/EN 61439-1; 3.8.9.2, 5.3.4

As peak value of the short-circuit cur-rent, the rated peak withstand currentcharacterizes the dynamic strength of acircuit in a switchgear assembly. As arule, the rated peak withstand currentis stated for the distribution- and mainbusbars of a switchgear assembly.

Rated conditional short-circuitcurrent (Icc)

IEC/EN 60439-1; 3.8.9.4, 5.3.6

The rated conditional short-circuit cur-rent corresponds to the prospectiveshort-circuit current which a circuit wit-hin a switchgear assembly, protectedby a short-circuit protective mechanism,can carry without damage (for a certaintime). The rated conditional short-circuitcurrent is therefore indicated for out-goers and/or incomers within circuit-breakers, for example.

Rated impulse withstand voltage(Uimp)

IEC/EN 60947-1; 4.3.1.3

Measures for the stability of the clea-rances within a switching device whendealing with transient overvoltages. Byusing suitable switchgear, it can beensured that no overvoltages from thesupply network in which they are instal-led can be transferred to de-energizedparts of the system.

Rated current (In) (of a circuit-breaker)

IEC/EN 60947-2; 4.3.2.3

Current which for circuit breakers is thesame as rated uninterrupted currentand conventional free-air thermal cur-rent.

→ Rated uninterrupted current

Rated control voltage (Uc)

IEC/EN 60947-1; 4.5.1

Voltag which is applied at the actuatingmake contact in a control circuit. It candeviate from the rated control voltagedue to transformers or resistance’s inthe switching circuit.

Rated ultimate short-circuitbreaking capacity (Icu)

IEC/EN 60947-2; 4.3.5.2.1

Maximum short-circuit current which acircuit-breaker can interrupt (Test O - CO). Following short-circuitbreaking, the circuit-breaker is able totrip in the event of an overload withincreased tolerances.

Rated service short-circuitbreaking capacity (Ics)

The short-circuit current-dependantrated operational voltage which a circu-it-breaker is able to interrupt repeatedly(Test O - CO - CO). Following short-cir-cuit breaking, the circuit-breaker is ableto carry the rated current again withincreased self-heating, and to trip out inthe event of overload.

→ Rated uninterrupted current; rated operational voltage

Rated operational power

IEC/EN 60947-1; 4.3.2.3

Motor rating which a switching devicecan switch at the associated rated ope-rational voltage in accordance with theutilization category, for example contac-tor with utilization category AC-3: 37kW at 400 V.

Rated operational voltage (Ue)

IEC/EN 60947-1; 4.3.1.1

Voltage to which the characteristicvalues of a switching device are refer-red. The highest rated operational volta-ge must on no account be higher thanthe rated insulation voltage.

→ Rate insulation voltage

36


Rated values, dimensioning of systems

01/10 TB46-015E

Rated operational current (Ie)

IECEN 60497-1; 4.3.2.3

Current which a switching device cancarry, taking into account rated opera-tional voltage, operating time, utilizationcategory and ambient temperature.

→ Rated oerational voltage

Rated uninterrupted current (Iu)

IEC/EN 60947-1; 4.3.2.4

Current which a switching device cancarry in continuous operation (forweeks, months or years).

Rated making capacity

IEC/EN 60947-1; 4.3.5.2

Current which a switching device canswitch at the respective rated operatio-nal voltage according to the utilizationcapacity.

→ Rated operational voltage

Rated frequency

IEC/EN 60439-1; 4.8

Frequency for which an assembly isdesigned and to which the other techni-cal data are referred.

→ Rated operational voltage;Rated uninterrupted current

Rated insulation voltage (Ui)

IEC/EN 60947-1; 4.3.1.2

Voltage to which insulation tests andclearances are referred. The highestrated operational voltage must on noaccount be higher than the rated insula-tion voltage.


Rated short-circuit breaking

capacity (Icn)

IEC/EN 60947-1; 4.3.6.3

Highest current that at rated operatingcurrent and frequency the switchingdevice can switch off without damage.

The value is stated as an rms value.


Rated short-circuit making capacity (Icm)

IEC/EN 60947-1; 4.3.6.2

The highest current which a switchingdevice at a certain rated operational vol-tage and frequency, can make withoutsustaining damage. Unlike the otherelectrical characteristics, this is statedas a peak value.


Rated shor-circuit current,conditional

IEC/EN 60947-1; 2.5.29

→ Conditional rated shor-circuitcurrent (Iq)

Dimensioning of low-voltageswitchgear system combinations

When rating switchgear assemblieswith regard to short-circuit withstandstrength, the rated short-circuit valuesmust be compared with the short-circu-it currents of the incoming power sup-ply. The switchgear assembly must berated for the short-circuit load whichcan occur. The busbars must resist thethermal and dynamic load of the short-circuit current which may flow in them(such as, via a circuit-breaker on theincoming side, and for a limited time).To facilitate rating, only the rated valuesof the switchgear assembly accordingto the following scheme are used.The let-through characteristics of theshort-circuit protective device and thedamping effect of the connection bet-ween the transformer and the switch-gear assembly are thus disregarded.

Rated short-time withstand current Icw > transformer short-circuit current I"k

and

Rated peak withstand current Ipk > peak short-circuit current ip

Where a short-circuit protective deviceleads to a restriction in the duration ofthe short-circuit, a rated short-timewithstand current can be applied for acorresponding length of time. Example:incoming circuit-breaker disconnectsshort-circuit after 40 ms; an establishedrated short-time withstand currentvalue for 100 ms is compared withtransformer short-circuit current forrating purposes. The rated operationalvoltage Ue must be the same or grea-ter than the transformer voltage.

Transformator Rated current In:

IN = k x SNT

Transformator short-circuit current I"k:

I"k = IN x 100/uk%Peak short-circuit current ip:

ip = n x I"k

n = 2,2 at I > 50 kAn = 2,1 at 20 kA < I < 50 kA

The procedure described above forrating the switchgear assembly refersprimarily to the rating of main busbarsystems. Rating of the distribution bus-bar systems and/or of all connectionsfrom the main busbar to the incomingside of function units, need only berated for the reduced short-circuit loadwhich may occur on the outgoing sideof the short circuit protective device forthe function units. It is a prerequisitethat, under normal operating conditions,a short-circuit is not expected to occuron these distribution busbars or con-nections.

Example:The transformer short-circuit current I"k= 90 kA, the selected main busbarshave a rated short-time-withstand cur-rent Icw of 100 kA, however the distri-bution busbars have a rated short-timewithstand current Icw of only 65 kA(because the circuit-breaker for the out-goer from the distribution busbar,thanks to its current-limiting effect, hasreduced the short-circuit load).

37


Rated/short-circuit current of standard transformers

01/10 TB46-015E

Rated voltage 400/230V 525 V 690/400 VUnShort-circuit 4 %1) 6 %2) 4 %1) 6 %2) 4 %1) 6 %2)

voltage ukRated Rated Short-circuit3) Rated Short-circuit3) Rated Short-circuit3)

power current In current I"k current In current I"k current In current I"kkVA A A A A A A

50 72 1967 - 55 1498 - 42 1140 -

63 91 2478 1652 69 1888 1259 53 1436 958

100 144 3933 2622 110 2997 1998 84 2280 1520

125 180 4916 3278 137 3746 2497 105 2850 1900

160 231 6293 4195 176 4795 3197 134 3648 2432

200 289 7866 5244 220 5993 3996 167 4560 3040

250 361 9833 6555 275 7492 4995 209 5700 3800

315 455 12390 8260 346 9440 6293 264 7182 4788

400 577 15733 10489 440 11987 7991 335 9120 6080

500 722 19666 13111 550 14984 9989 418 11401 7600

630 909 24779 16519 693 18879 12586 527 14365 9576

800 1155 - 20977 880 - 15983 669 - 12161

1000 1443 - 26221 1100 - 19978 837 - 15201

1250 1804 - 32777 1375 - 24973 1046 - 19001

1600 2309 - 41954 1760 - 31965 1339 - 24321

2000 2887 - 52443 2199 - 39956 1673 - 30402

2500 3608 - 65553 2749 - 49945 2092 - 38002

1) uk = 4 % standardizedto DIN 42500 for SNT = 50…630 kVA

2) uk = 6 % standardized to DIN 42500 for SNT = 100…1600 kVA

Approximation formula

Transformer rated current

IN (A) = k x SNT [kVA]

400 V: k = 1,45500 V: k = 1,1690 V: k = 0,84

Transformer short-circuit current

I"k = x 100INuk

3) I"k = Initial symmetrical short-circuit current of transformer for connection to a supply network with unlimited short-circuit capacity

38


MODAN installation notes

01/10 TB46-015E

Operation and maintenance gangways within the switchgear combinations

The minimum width for operation andmaintenance gangways for switchgearcombinations is 700 mm, the minimum

gangway height under panelling is 2000 mm. When a lifting trolley is to beused to exchange circuit-breakers the

gangway width should be designed tothe dimensions of the lifting trolley.

The doors of the switchgear combina-tion should be arranged so that theyclose in the direction of the emergencyescape route. With a different

assignment, a free access clearance of 500 mm must remain. If switchgearcombinations are installed oppositeeach other, it is not necessary to

consider that doors on both sides areopened simultaneously.

2000

600

700

600

700700700

�

700

(600

) � �

500

Drawer-unit in disconnected position

Direction of escape in an emergency

39



01/10 TB46-015E

General notes

Distribution section floor view Bottom view of plinth

Tolerance details for the floor Installation (plan view)

= Internal cablingarea in plinth

+1 auf 1000 mm

–1 auf 1000 mm

0

b –

120

a – 120a – 200a – 140

a + 1

b –

140

b –

103

b +

1

50

150

MODAN

Dimension a 400 400 600 600 800 800 1000 1000 1200 1200 1200 1400

Dimension b 600 800 600 800 600 800 600 800 600 800 1000 1000

+1 on 1000 mm

-1 on 1000 mm

40



01/10 TB46-015E

Installation with MODAN corner section

Floor view corner section Bottom view of plinth

6060

60

6060

6060

60

6060 ø14

a1

c 1

c

a

aa

b

a –200

a1 –103

a1 +1

c –1

0310

0

c +

120

0

Dimension a 600 800

Dimension a1 800 1000

Dimension c 600 800

Dimension c1 800 1000

Sections of the same depth arecombined.

Busbar trunking entry

Top and bottom plates for LD/LX entry

Top and bottom plates for LD/LX entrywith IZM 4000 - 5000 A 4 pole switching

For busbar trunking connection a bLD 4000 - 5000 A 186 90LX 4000 - 5000 A 190 90

For busbar trunking entry aLD 1000 - 3200 A, 4 and 5 conductor 177LD 2000 - 5000 A, 4 conductor 177LD 2000 - 5000 A, 5 conductor 186LX up to 1600 A 185LX 1600 - 3200 A 193LX 4000 - 5000 A 190

Addresses worldwide:www.moeller.net/address

E-Mail: [email protected]: www.moeller.net

www.eaton.com

Publisher:Eaton GmbHHein-Moeller-Str. 7-11D-53115 Bonn

© 2010 by Eaton Subject to alterationsTechnical Guide MODAN eTB46-015GB-INTPrinted in Austria (04/10)Grafics: SRA, SchremsPrint: Druckerei Rabl, Schrems Article No.: 202173

Eaton Corporation

Eaton is a leading energymanagement company. Eatonoperates worldwide with products,systems and services in theelectrical, hydraulic, aerospace,truck and automotive sectors.

Eatons Electrical Sector

Eatons Electrical Sector is theworldwide leader in products,systems and services for energydistribution, safe electricity supplyand automation in industrial,residential and purpose-builtbuildings, public facilities, energyproviders, commerce and OEMs.Eaton Electrical Sector includes thebrands Cutler-Hammer®, Moeller®,Micro Innovation, Powerware®,Holec®, MEM®, Santak® and MGEOffice Protection Systems™.

www.eaton.com

4 015082 021733

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