EL

EK

TR

OB

UD

OW

AS

A10/K/2009/EN

Low-Voltage Switchgear and Controlgeartype NGW R

CATALOGUE

INTRODUCTION1. GENERAL CHARACTERISTICS 1

1.1. APPLICATION 11.2. FEATURES 11.3. OPERATION CONDITIONS 11.4. CONFORMITY TO STANDARDS 1

2. TECHNICAL DATA 23. SWITCHGEAR DESIGN 2

4The 6The distribution busbars compartment 6The auxiliary/common circuits compartment 7

3.1. Sections with an air circuit breaker 83.2. Sections with withdrawable and remowable 93.3. Sections with a digital control and supervision system 103.4. Reactive power compensation sections 103.5. Lighting switchgears 113.6. Sections with blocks of disconnecting switches 11

4. MAIN CIRCUITS 125. OPERATION CHARACTERISTIC 15

5.1. Degree of protection 155.2. Interlocks 155.3. Protection against electic shock 155.4. Equipment supplied together with the switchgear 155.5. Operation equipment 155.6. Nameplates and labels 16

6. MOUNTING 167. TRANSFORMER CHAMBER 178. BUSDUCT 189.

10. TRANSPORT 2111. ORDERING 21

Functional units compartmentbusbars compartment

The connections compartment 7

part

DESIGNING 209.1. Contents of the engineering design 209.2. Hints for designing 20

The catalogue presents the switchgears in detail. General information about busbar trunking systems and

transformer chambers is included.

Switchgear 0,4kV in Rafinery ORLENP³ock Poland

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ELEKTROBUDOWA SA

Efficient, safe, economical, beneficial - such is the low voltage distribution system offered by

ELEKTROBUDOWA SA. Versatile possibilities of application in low voltage electric network, universal permanent,

plug-in and withdrawable units in one section, safe supply by encapsulated busbar trunking system and variety of

cable, wire and busbar connections - distinguish our product in the international market. A lot of possibilities to choose

from mass-produced modules determinate the high quality of product.

NGW

Mentioned below products are parts of the system NGW:

switchgears up to 7500A; up to IP42,control assemblies up to 630A; up to IP42,switchgears up to 2500A; IP55,busbar trunking systems ,transformer chambers .

NGW R-1NGW R-18

NGW R-2NGW M-1

NGW K

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1

1. GENERAL CHARACTERISTICSIndoor switchgears and controlgear systems are

assembled from elements manufactured serially in thenumerically controlled machining centres. Parts of theconstruction are made from high quality material protectedwith anticorrosive electrolytic or powder paint coats.

NGW R

Indoor low voltage switchgears are designed forlow voltage AC or DC electric energy distribution, and for thecontrol and protection of electric equipment against shortcircuit and overload consequences. They can be used as mainswitchgears, motor control centre and subdistribution boards.They can work with busbar trunking system in TNC or TN-Salternating current networks and in direct current networks.

The assemblies meet the needs of numerous clientsin industrial plants, power industry, transportcommercial andpublic buildings and environmental protection plants.

NGW R

NGW

1.2. FEATURES

Polish product conforming to international standards

in quality,

one manufacturer fulfils all energy distribution

requirements,

configuration of switchgear, busduct and transformer

chamber according to the needs,

convenient access to apparatus and comfortable

operation,

separation of compartments in any agreed form, from

1 to 4 according to PN-EN 60 439-1:2003/A1:2006,

adaptation for cooperation with digital equipment for

monitoring and control,

easy replacement of functional units or adding new

ones,

each assembly type tested (TTA),

safety for personnel and protection of equipment,

reliability and long life,

minimum maintenance and inspection requirements,

manufacturer's professional service,

quick assembly,

short response times for delivery.

1.3.NGW R-1, 2 switchgears and other elements of

NGW system are designed to operate in roomsensuring normal environment condition according tostandard . Specialenvironment conditions must be agreed betweenmanufacturer and user.

PN-EN 60439-1:2003/A1:2006

NGW R-2, IP55 Assembly

OPERATION CONDITIONS

The most distinguishing features of the typesystems are:

NGW R

1.3.

PN-EN 60439-1:2003/A1:2006

PN-EN 60439-2:2004/A1:2007

Low voltage switchgearand controlgear assemblies. Requirements for type-tested and partially type tested assemblies.

Low voltage switchgearand controlgear. Requirements for busbar trunkingsytem.PN-EN 60439-3:2004

PN-EN 60439-4:2008

PN-E 05163:2002

PN-EN 60529: 2003

Low voltage switchgear andcontrolgear. Requirements for low voltage switchgearand controlgear designed for installation in placesaccessible for the unqualified personnel. switchboards.

Low voltage switchgear andcontrolgear. Requirements for assemblies to beinstalled on site.

Enclosed low-voltage switchgearsand controlgears. Arc-resistance commissioning andtesting.

Degrees of protection provided byenclosures (IP Code).

CONFORMITY TO STANDARDSElements of system meet the requirements ofstandards:

NGW

ELEKTROBUDOWA SA applies the management systemaccording to ISO 9001; ISO 1401 andAQAP-2110.

1.1. APPLICATION

ELEKTROBUDOWA SA

2. TECHNICAL DATA

2

Rated values

Rated voltage

Rated current In

insulation Ui

operation ue

continuous of horizontal busbars

continuous of supply cubicles

continuous of cubicle vertical buses

Short-circuit currents , , fault duration timeI I tcw pk cw

Rated frequency fr

Protection degree of enclosures according to IEC 529

Average mass of a section

Resistance to consequences of internal arcaccording to category B1*

3. SWITCHGEAR DESIGN

Mounting frame

Construction framework

Partitions between sections,mounting plates, connection elements

External enclosures

Construction parts of a section

protective coat Al-Zn

epoxy powder paint

protective coat Al-Zn

Corrosion-proof coating

epoxy powder paint

The basic moduleis a cuboid

125x50x50 mm

Construction parts of a switchgear section

Switchgear's construction allows for the installation of 3- or 4- poleapparatus. In segments there are separated compartments. Thecompartmented design provides the protection against contact withlive parts belonging to the adjacent functional unit and the reductionof spreading arc fault consequences outside the place it is initiated,and thus considerably increase the degree of safety.

Dimensions of a section are a multiple of a 125x50x50 mm cuboid.

Preferred dimensions of sectionsType of a section

with fixed parts up to IP42 or IP55

preferred sections up to IP42

Other dimensions subject to agreement

with a side connections compartment

with a rear connections compartment

with a side connections compartment

with a rear connections compartment

with a side connections compartment

with a rear connections compartment

version with an additional door

width w height h depth d

mm mm mm

with withdrawable/removable parts up to IP42

with withdrawable/removable parts IP55

850, 1000

700

950, 1100

800

650, 850, 1000

400, 600, 750, 1000

400, 600, 750, 850, 1000

2150

2150

2150

2150

550, 750, 1000

750, 900, 1000

700, 900, 1150

900, 1050, 1150

250, 400, 450, 550

600, 650, 750

550, 700, 750,900, 1000, 1150

V

NGW R-1 NGW R-2

up to 1000

up to 6300 up to 2500

up to 231 according to table page 6

50 ÷ 60

up to IP42 IP55

120 230

65 kA during 0,1s

up to 660

do 1000

NGW R-18

-

250

500

250

up to 630

125, 250

up to 1000

up to 660

up to 2500up to 7500

up to 1600 1600

V AC

V DC

A

AHz

kg

A

A

- main busbars

- auxiliary/common circuits

- distribution busbars of the segment

- connections

Options: from the bottom, from the left side, from the right side or from the back

- functional units

Functional compartments:

Optional configuration of sections

Double

incom

ing

feeder

A

A

A

A

AV

foundation

fram

e

50

2000

=16

xM

h=

2150

50

dw

Wall-mounted access from the front–

rear

connections

com

part

ment

Free-standing access from the front and back–

A

V

A

A

A

A

Form 1 Form 2a

Form 3a Form 3b Form 4a

Form 2b

Form 4b

Different forms of compartments separation according to PN-EN 60439-1:2003/A1:2006

In the switchgear design enables all methodsof internal division of a section by means of partitions orbarriers are possible. According to PN-EN 60439-1:2003/A1:2006 the inside of a section can be divided inone of the following ways:

NGW R

3

ELEKTROBUDOWA SA

4

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Apparatus of main and auxiliary circuits are mounted ona common base which can be completely removed from thesection even if the circuit to which it is connected is undervoltage. The withdrawable part can take one of the four basicpositions:

FUNCTIONAL UNITS COMPARTMENT

In the standard section 2150 mm high,the height of a functional unit compartmentis conventionally divided into 14 or 16modules M = 125 mm. In this compartmentunits with withdrawable, removable orfixed parts can be situated. 1

4M

2M

16M

w

Typical sections - examples

600

- with a busbar compartment - without a busbar compartment

h=

2150

w

A

A

A

A

A

A

V A

Withdrawable unit W02 and W04

Withdrawable units

a connected position

a test position

a disconnected position

a removed position

the part is fully connected for itsnormally intended function,

the switch in the main circuit is open, thesafe isolating distance in main circuits is provided, auxiliarycircuits are connected, the part remains mechanicallyattached to the assembly,

an isolating distance isestablished in main and auxiliary circuits, the withdrawablepart is mechanically attached to the segment,

the part is mechanically andelectrically separated from the section (outside theswitchgear).

In the connected position the withdrawable part ismechanically interlocked and can be additionally blocked (item5.2). For inspection or repair time the withdrawable part can bereplaced with an earthing part in order to earth the outgoingcable (item 5.5).

There are seven sizes of withdrawable parts: W04, W02,W1, W1,5, W2, W3 i W4.The size of a withdrawable partdepends on:

the rated continuous current and number of main busbars

the type and quantity of mounted apparatus

The withdrawable part W1 ÷ W4

W04

W02

The size of a withdrawable part

Rated current In

Number of main busbars

W04 W02

32A 63A

2; 3; 3 + N160A

250A

400A

630A

3 + N3

The minimal size of a withdrawable part 550 mm wide

2Number of main busbars

1,5M 1,5M 2M 1,5M

2M 3M 4M 2M

2M 3M 4M 2M

4M 4M 3M—

Rated current In

W1

W1,5

W2

W3

W4

Size of awithdrawable

partmm

Mounting space on a withdrawable part

height h width w depth dHeight of a

withdrawable part

187,5

187,5

187,5

125

250

375

500 432

306

180

117

529 400

145 330110145

54

220 h

d = 400w = 529

Withdrawable unit 550mm wide

The main moving contact of the main circuits islocated in an insulating beam of the withdrawable part.Its shape ensures the efficient decomposition of electro-dynamic forces. Contacts can be joined in parallel.

The main moving contact of the auxiliary circuits islocated under the base. It is used as:

external connections block,interconnections block,limit switch.

Removable (plug-in) parts

Fixed partsFixed parts include apparatus

permanent ly mounted oncrossbeams or mounting platesand connected to the maincircuits. The size of the part is amultiple of a basic module:125x50x50 mm.

Sections with fixed parts areused as switchgear, controlgearand sets for reactive powerc o m p e n s a t i o n , u s u a l l yindividually design.

The main moving contact of the auxiliary circuits -greatest amount of contacts

36

45

W04

W1÷W4

Withdrawablepart

36W02

or

A section without division into compartments

The removable (plug-in) part can be removed fromthe switchgear even when the circuit to which it isconnected is live. It can take up following position:

,

.

The removable (plug-in) part includes main andauxiliary circuits' apparatus on a three-dimensionalcassette or on a common mounting plate, such as:

aplug-in circuit breaker and a plug-in fuse-switch. Themain moving contact of the removable partmain circuits connects it with distribution busbars.There are types:

, , , , , , mounted

disconnecting switch blocks.

the connected position

the removed position

typical or customized functional unit of apparatus,

(plug-in)

on a three-dimensional cassette,

, , , ,

P04 P02 P1 P1,5 P2 P3 P4

R1 R1,5 R2 R3 R4 mounted on a plate,

362, 3, 3 + N

The otherconfigurationoutput/input

is alsoavailable

The main contact of the removable part of circuit:

auxiliarymain NoticeRemovable part

CASSETTE

P04

P02

P1÷P4

PLATE

R1÷R4

––

The main contact of thewithdrawable unit W1 ÷ W4in the connected position

The main contacts of thewithdrawable part W04 or W02

Removable parts iP04 P02 Removable parts R1,5

Disconnecting switchesarranged vertically

Disconnecting switchesarranged horizontally

5

Separated functional areasAn assembly with meters

ELEKTROBUDOWA SA

The busbars compartment

The distribution busbars compartment

6

Vertical busbars are run in the rear of the section. Busbarscan have 2-, 3- or 4-pole arrangement, as:

applied at the reduction of the system, load symmetrically top-bottom

The main busbars run along the whole length of theswitchgear in the upper part of its sections. The arrangement andsize of copper conductors depend on technical parameters.

Busbars can be divided into sections to facilitate assembly ortransport. Sections of busbars are joined by special connectorswithout the need to make holes.

Inside the busbars compartment

Arrangement of busbars diagrams 1-7–

Holeless busbar joint

flat copper conductors consisting of one, two or three strips toconnect mechanically operated switches with busducts; flatbars from P30x10 to P100x10 are used,

channel bar conductors in isolating elements to connectwithdrawable and removable parts.

For optimal arrangement of distribution busbars it isrecommended to group the withdrawable, removable and fixedparts.

Flat conductors Channel shaped distribution busbars

Rated current

C400

C630

C1000

C1600

Size of channelshaped busbars

400

630

1000

1600

In Ipk Icw tcw

Fault duration time

sA kA kA

80

100

150

150

31,5

40

60

60

0,5

0,5

0,5

1,0

1250

1600

2000

2500

3200

4000

6300

400

750

In

A

5000

7500

Rated currents of busbars

kA

80

80

100

100

150

176

176

176

231

231

231

Ipk

31,5

105

105

Icw

kA

40

40

40

60

80

80

105

80

tcw

s

0,1

0,5

0,5

1,0

1,0

1,0

1,0

1,0

1,0

1,0

1,0

2x[2x(50x10)] *

2x[2x(100x10)]

3x[2x(80x10)]

2x[2x(80x10)]

Size of a copperconductor

3x[2x(100x10)]

2x(30x10)

2x(40x10)

2x(50x10)

2x(80x10)

2x(100x10)

mmxmm

30x10

30x5

Diagram

3 (5)

1 (6)

3

1

1

1

1

4*

2

2

7

7

L1 L2 L3 N L1 L2 L3 L1 L2 L3 N

L1 L2 L3 NL1 L2 L3 N

L1 L2 L3 N L1 L2 L3 N L1 L2 L3

7

Neutral bus N is half a phase bus size unless differentconstruction and design assumptions.

7

The compartmentauxiliry/common circuits

In the auxiliry circuits compartment there are apparatus of controlcircuits, signalling, measurement, data processig, etc. circuit breakers andsome functional unit for which that circuits don't have enough place inwithdrawable units.

Common circuits (circuitous) there are placed in separate compartmentof circuitous circuits. If there are not any circuitous circuits it is possibleinstalling in that compartment some auxiliry circuits. In particular cases incircuitous circuits compartment can be take out terminals for installingearthing units.

The external connections compartment

The external connections compartment there is in everysegment equipped with withdrawable and plug-in functional unitsand sometimes there is in segments with fixed units. In segmentcan be located:

on the right side,on the left side only segments with fixed units,on the beck side the free-standing switchgear,at the bottom,at the upper.The side compartment with width 250 mm can be used when

number and sections of outgoing cables are not big. Withexploitation reasons prefered is compartment with width 400 mm.The compartment under the circuit breaker is designed for cableor rails connections and for terminals for installing earthing units.

In standard version the bottom of the compartment isn'tcovered. On special request in version with IP55 the bottom ofcompartment is covered by metal plate with glands.

Insertion cebles from uper side is possible by glands or hole intop cover. For segments with rails only after agreement.

Connections compartmentfrom the right side

Connections withcables from the top

Connections compartmentfrom the left side

Connections with busbarbridge from the top

Connections compartmentfrom the beck

The circuitous circiuts of switchgearand auxiliary circuit of circuitbreaker compartment

The compartment ofcircuitous circuits

Connections compartmentfrom the bottom

100

with

busbars

without busbars

The compartmemtfor circuits:

The common/auxiliary circuits compartment

width height depth

mm

400, 600,750, 1000

2M ÷ 9M

prefered 5M

witch a withdrawable//removable parts

any to 14M

700, 850, 1000 2M

100

with

fixed

part

s

Usually doesn't exist

usually doesn't exist

With a circuit breaker

auxiliary

common

auxiliary

common

auxiliary

common

auxiliary

common

auxiliary

commonWith the externalcompartment from the side

Without the externalcompartment from the side

Section

350

2M

350

as for the section

as for the section

usually doesn't exist

usually doesn't exist

100

2M

2M

100

600

ELEKTROBUDOWA SA

Connections from the bottom

8

Enclosures

Total dimensions of the assembly depend on dimensions of its sectionsand external enclosures.

Type of enclosure

side enclosure

rear enclosure

front door

rear door

A partition between sections

enclosure thickness

mmremarks

end section

free-standing section

20

17

17

17

1,0

Asingle section has two side enclosures.

3.1. SECTIONS WITH AN AIR CIRCUIT BREAKER

A standard dooro p e n s r i g h t . T h emaximum size of a glasspanel is 200 mm smallerthan the door size.

Optionally, a sectioncan have an extra door,which covers the handleso f t h e o p e r a t i n gmechanism. Then thesection's depth is 150 mmgreater.

min. 100

min

.100

2150

2M

5M

5M

w

d

4M

w

d

w 400

d2M

5M

3M

5M

50

2x50

1M

2M

500*

d

w1

14M

Connections from the right sideConnections from the top

Sections with air mechanical circuit breakers perform the function of supply feeders, outgoingfeeders or coupling cubicles. Two circuit breakers with rated current up to 1600A can be installed inone section. The preferred circuit breakers and standard schematic diagrams are specified in item 4.

Circuit breakers can be installed as fixed or withdrawable. Auxiliary and common circuits shouldbe located in the auxiliary circuits compartment.Astandard height of such compartment is 5M.

A special truck (item 5.5) produced by ELEKTROBUDOWA SA is offered to facilitate operation ofthe circuit breaker.

500* - forACB with reduced dimension, type (ABB), NT06÷NT1,6 (Schneider), IZMX16 (MOELLER).Dimensions in brackets to be applied for coupling panels and whereas busbar trunking system(busduct) is connected to a section.

I

of the circuitbreaker

n

2500

3200

16001600

4000

5000

6300

7500

2 000

A

width w

Minimal size of a section with a circuit breaker

a bottom cableconnection

depth d

3

a topconnection

number of main busbars

width w

mm

a bottom cableconnection

depth d

4

a topconnection

750(1000)

750(1000)

1200

1200

600(750)

600

600

500*

550(750)

550(750)

550

550

750(1000)

750(1000)

1200

1200

750

750

750

750

1000

1000

1400

1400

750

750

750

600

1000

1000

1400

1400

550(750)

550(750)

550

550

750(1000)

750(1000)

1200

1200

1000

1000

1400

1400

750

750

750

750

w1 = 250mm dla In 2500Aw1 = 400mm dla In > 2500A

≤

3.2. SECTIONS WITH WITHDRAWABLE AND REMOVABLE PARTS

Units with withdrawable and removable parts can perform thefunction of supply or outgoing feeders or for reactive powercompensation. Standard schematic diagrams and preferredapparatus are specified in item 4.

The remaining space in the functional units compartment canbe:

filled with a dummy ,used for stand-by withdrawable parts,used as a compartment for further extension of the switchgear(additional door),used as an auxiliary circuits compartment.Additional equipment for operation of the withdrawable and

removable part is specified in item 5.5.

The tables show dimensions of the most frequentwithdrawable parts or removable cassette.

Standard auxiliary equipment: two auxiliary relays, a fuse and a miniature circuit breaker.

Units with a disconnecting switch

In (A)

of a disconnecting switch

up to 32

up to 63

up to 160

up to 250

up to 400

up to 630

Minimal size of the withdrawable part/removable cassette

No. of the schematic diagram

W1,5

W2

W4

P1,5

P2

P4

W3 P3

w1 = 400 mm preferredw1= 250 mm small quantity of cablesw1 = 600 mm and more big quantity of cables

14

M2

M

A

A

A

A

600

h=

21

50

1,5

M1,5

M1,5

M2M

4M

w1

1M³¹

czni

e3,

5M

V A

w

9

Units with a moulded case circuit breaker and a contactor Units with a disconnecting switch and a contactor

In (A)

of a circuitbreaker

up to 32

up to 63

up to 160

up to 250

up to 400

400

Minimal size of the withdrawable part/removable cassette

No. of the schematic diagram

17

W04

W02

W1,5

W2

W4

20

W3

power of theoperating

device

up to 15

up to 22

up to 110

up to 160

P (kW)

23

W4

W4

W4

P04

P02

P1,5

P2

P4

P3

W4up to 55

up to 75

In (A)

of a circuitbreaker

up to 32

up to 63

up to 160

up to 250

up to 400

400

Minimal size of the withdrawable part/removable cassette

No. of the schematic diagram

power of theoperating

device

up to 15

up to 22

up to 110

up to 160

P (kW)

18 21 24

up to 55

up to 75

Units with a contactor

In (A)of a circuit

breaker

up to 32

up to 63

up to 160

up to 250

up to 400

Minimal size of the withdrawable part/removable cassetteNo. of the schematic diagram

power of theoperating

device

up to 15

up to 22

up to 110

up to 160

P (kW)

18

W04

W02

W1,5

W2

W4

W3

up to 55

up to 75

up to 630

13 14 15

P04

P02

P1,5

P2

P4

P3

P4

P4

P4

P4

W4

W4

W4

W4

P04

P02

W04

W02

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

or

P04

P02

P1,5

P2

P4

P3

or

or

or

or

or

or

W04

W02

W1,5

W2

W4

W3

P1,5

P4

P4

P3

or

or

or

or

W1,5

W4

W4

W3

W4

W4

W4

W4

P4

P4

P4

P2

W4

W4

W4

or

or

or

or

ELEKTROBUDOWA SA

Withdrawable part according tothe schematic diagram

Reactive power compensation section NGW R-1

10

3.3. SECTIONS WITH A DIGITAL CONTROL AND SUPERVISION SYSTEM

One of the essential advantages of the NGW R switchgear system is itsfacility to cooperate with the digital systems of protection, monitoring, controland supervision.

A digital system is of a dissipated nature. It is based on microprocessorapparatus of recognised producers, which enable to come on stream andcommunicate in the PROFIBUS-DP (SIMOCODE), or MODBUSRTU(MICOM P211 with the possibility of communication) protocol.Microprocessor modules facilitate the performance of the following functionsin the motor drive supply units:

complete protection against overload and overheating,ground fault detecting,protection against operation with the phase currents unbalance andphase decay,motor control,electrical ratings measuring ,measuring and recording of work time and number of operations (onlySIMOCODE).The control function can be performed from a control and supervision

station through a digital network with a suitable communication protocol orthrough individual inputs of modules. In the latter case it is realised either byindividual push-buttons or directly from the front panel of the unit (in case ofSIMOCODE an additional operator panel must be provided).

Owing to the digital network it is possible to read such parameters asmodule input and output state, measured electrical values, event recording,etc., from the control and supervision station.

It is possible to incorporate the units with a circuit breaker or adisconnector switch into the digital network of the switchgear: directly, if theyare provided with a suitable communication interface, or through an adapter,if they are not.

The preferred dimensions of sections are shown in the table on page 2.

3.4. REACTIVE POWER COMPENSATION SECTIONS

Another advantage of the NGW R switchgear is the provision for bank ofcapacitors on the withdrawable parts or in the sections, in one set of adistribution assembly. It results in cost reduction, as it is not necessary to buya cable and a supply unit. Sections of the battery are fed directly from theswitchgear busbars through internal protection devices and contactors. 120kvar batteries can be placed on the withdrawable parts, batteries with greaterpower in sections with appropriate dimensions.

No of the schematic diagram

Size of the withdrawable part

power of the battery

regulation grades 30

2M

3M

2

430 ÷ 120

10 ÷ 50

number of

P (kvar)

Digital control and supervision systemfor drives and circuit breakers

Withdrawable part W02 with digital module

30

3.5. LIGHTING SWITCHGEARS

Lighting switchgears are designed for protection andcontrol of lighting and heating installations, ventilation or air-conditioning circuits and plug-in sockets in public buildings,production bays, shopping centres, etc. They are usuallysections 250 or 400mm deep.Available widths are specified inthe table on page 2. Doors can have a sight glass forinspecting the status of apparatus.

Sections with plug-in sockets on the side enclosure orbehind the door are used for feeding a construction site or abuilding under repair. Sections used for this purpose usuallyare 450 or 650 mm deep. Available widths are specified in thetable of the preferred dimensions on page 2. The heightdepends on the requirements and can be a multipleof M = 125mm.

11

3.6. SECTIONS WITH BLOCKS OF DISCONNECTING SWITCHES

Sections with blocks of disconnecting switches are applied inindustrial and power plants. They are particularly fit for municipal,district or plant transformer substations.

Dimensions of the switchgear with blocks of disconnectingswitches depend on current ratings and number of consumers.With the supply of maximum current 1600A the following

devices can be used:a moulded case circuit breaker,a disconnecting switch,a disconnector,direct busbar connection.

Rated continuous current of consumers is 630A.

I

I

n

n

d

w w w w

h2

h3

h1

50

2.1 2.2 2.3 2.4 2.5 3.13.2 3.3 3.4 3.5 4.4 4.54.1 4.2 4.3

Lighting switchgears

The preferred dimensions of sectionsare shown in the table on page 2

Switchger with blocks of fuse-switches

10M 0 1400

13M 3M 1775

16M 6M 2150

h3 h (mm)

any width

from 400 to 1500250, 450, 550

every 100mm

height depth width

d (mm) w (mm)

Sections with blocks of disconnecting switches vertical

ELEKTROBUDOWA SA

12

MAIN CIRCUITS4.

M M MM

M

MM

Fu

nctio

na

lu

nits

with

with

dra

wa

ble

pa

rts

MM MMM M M

Fu

nctio

na

lu

nits

with

fixe

dp

art

sF

un

ctio

na

lu

nits

witch

rem

ova

ble

pa

rts

up

to6

30

AF

un

ctio

na

lu

nits

with

with

dra

wa

ble

pa

rts

Fu

nctio

na

lu

nits

with

fixe

dp

art

sF

un

ctio

na

lu

nits

witch

rem

ova

ble

pa

rts

up

to6

30

A

BUSDUCT

BUSDUCT

13

M MM M M

M M M M

M M M M M

Main diagrams in ALBUM, available on an ask.

ELEKTROBUDOWA SA

14

Prefered equipment mounted in the sections of is shown in the table belowNGW R-1

In switchgear practically any devices can be mounted . Other functional units can be designed on request.NGW R-1, 2

AREVA

FANOX POLSKA

SIEMENS

Energotest-Energopomiar Sp. z o.o.

Relpol SA

LUMEL SA

APATOR SA

Weidmuller

WAGO

Phoenix

..

various

MICOM P210 / P211

FANOX

Simcode DP

AZRS / APZ

EA / MA / PA / FA and other

4G10

WDU

Device Type Producer

Air circuit breaker

Moulded case circuit breaker

Switch / fuse-switch

Slim-line disconnecting switch

Current transformer

Protection devices

ACO units

Auxiliary relays

Motor circuit breakers

Signalling lights and control buttons

Signalling diode

Ammeters, voltmeters, meters

Connection pieces

Voltmeter switch

various

various

various

various

various

various

various

various

Contactor

various

FINDERvarious

various

MOELLERTZ-2

ABBOMV

CONTA-CLIPZRK / RK

GE

SIEMENS

Schneider Electric

ABB

Schneider Electric

ABB

ABB

Holec

Socomec

ABB

GE

Danfoss

ORAM

M-PACT

3WL1

Masterpact

E-max

NS

Isomax / T-max

OETL / OESA / OS

DMM / DMV

SIRCO

SR / XR

CL / CK

CI

LSV

MOELLERNZM

APATORRA / RAB / RBK

JEAN MÜLLERSL

MOLLERIZM

GERecord Plus

SIEMENS3VF

ABBA / EH

Schneider Electric

SIEMENS

LC

3RT10

MOELLERDILM

Polcontact Sp. z o.o.

ABB ZWAR SA

MBS

MOELLERPKZM

Schneider ElectricGV

GEMBS

ABBMS / MO

PROMET

MOELLER

Schneider Electric

TWELVE

ABB

15

5.1. DEGREE OF PROTECTION

In order to provide protection against contact with live parts andingress of solid foreign bodies and water, the switchgear is designed as:

5. OPERATIONAL CHARACTERISTICS

5.2. INTERLOCKS

5.3. PROTECTION AGAINST ELECTRIC SHOCK

5.4. EQUIPMENT SUPPLIED TOGETHER WITH THE SWITCHGEAR

5.5. OPERATION EQUIPMENT

A assembly is delivered together with :

bolts for connecting the cubicles

a set of busbar connecting pieces

0,4l of paint

keys for the doors.

NGW operation and maintenance manual and

Protection against direct contact is provided by barriers and enclosures.Protection against indirect is provided by using protective circuits. The construction together with a protective conductorprovides a suitable impedance of fault loop, so the fault protection devices can operate. Either neutral earthing orprotective earthing is applied, according to the user's needs.

According to PN-EN 60439-1:2003/A1:2006 the withdrawable parts can be inserted to the connected position orwithdrawn only when the main circuit is interrupted. Provision is made for additional interlocking with padlocks or key-operated locks.

The door of the functional unit/group can be provided with the interlock of opening in case of voltage presence. The doormay have a provision of sealing.

The switchgear can be designed as an open-type assembly with alower degree of protection; this must be indicated in the engineeringdesign.

Number of vent openings is designed by ELEKTROBUDOWA SA. Inthe IP55 design no vent openings can be foreseen.

Assembly / element Degree of protection

NGW R-1 up to IP42

NGW R-2 IP55

After opening the door

IP2XThe withdrawable part in the removed position

IP2X

earthing parts

a cubicle for earthing and replacement parts

a withdrawable part tester

extension cord for the removable part

a hand operated lifting truck.

Hand operated lifting truck

An extension cordfor removable parts

An earthing part

A cubicle for earthingand replacement parts

For the time of repair or replacement of the equipment beingfed the parts which supplies the consumer is replaced with aspecially marked earthing part which has the function of closingand earthing the outgoing contacts of the unit.

For the time of measurements and identification of damagethe inspected part of the switchgear is replaced with thewithdrawable part of a tester. The inspected part shall beinserted onto the guide rails of the tester upper shelf. Thecontrol circuits close automatically.

The extension cord is provided with a socket and a multi-pinplug connected by a multi-core conductor. Connection of thecontrol circuits of the inspected removable part with theswitchgear is provided through this connector.

A section IP55 NGW R-2

Withdrawable part tester

ELEKTROBUDOWA SA

16

�

�

�

�

6. MOUNTINGThe switchgears are usually arranged in one or two rows. It is

also possible to arrange the sections in a broken line. They canbe connected by an attachment box or a section of busduct.

Minimum distance between the switchgear and the wall of aroom is 100 mm. Recommended height of the switchgear roomis . For rooms which are not so high or whenbusducts are applied, please consult the manufacturer.

h + 500 mm

5.6. Nameplates and labels

x - number of a section, counting from the left side of theassembly

y - number of a functional unit of full width of the section,counting from the top of the switchgear

z - number of the functional unit counting from the left side ofthe section (parts 1/4M and 1/2M)

Elements of the NGW system are identified bynameplates according to PN-EN 60439-1:2003/A1:2006.Numbering and descriptions of functional units shall begiven in the engineering design. A number of the functionalunit is created in the following way:

A

A

A

A

A

A

V A

Examples:

1.4 Feeding from RS21.4 Feeding from RS2

1.5.3 Valve 3

1.8 Pump P21.8 Pump P2

2

Assemblies with various depths of the cubicles can beleveled to the deepest cubicle.

completion of construction and painting

completion of ventilation and water-sewage systems

completion of lighting installation

preparation of the mounting floor:

Preparation of the room for mounting the switchgear consists of:

mounting and levelling the foundation frames withaccuracy ± 2 on the whole lengthlevelling the part of the floor with holes,mounting the floor tiles on the fake floor,provision of the door opening width w + 100 mm andheight h + 100 mm,provision of key-lock or a padlock in the entrance door,provision of an entry in the wall if the switchgear is fedfrom the busduct situated in another room or from theoutside.

When the switchgear has been levelled the sections shall befixed:

on the foundation frame mounted in the floor or on the fakefloor made from steel shapes, with bolts or by welding in afew spots from inside, the welds shall be protected withanti-corrosive paint,

directly on the floor, using anchor sleeves, e.g. TKKM-8.

Holes in the floor

Main busbars connection of sections arranged at right angle

Foundation frames

L - foundation frame’s width

L1 - sum of widths cubicles with minimum depth d1

L2 - sum of widths cubicles with minimum depth d2

L3 - sum of widths cubicles with minimum depth d3

d

d-

10

0

w

w-100

d

d

w w

50 50

50

w1-70

w1

d-

10

0 50

50

w - cubicle’s widthw1 - connetions compartment’s

d - cubicle’s depthwidth

50

cubicle’s contour

maximal hole in the floor

a foundation frame

an anchor

17

7. TRANSFORMER CHAMBER

Technical data

Resistance to electric arcingconsequences, at current 65 kA in 0.1 s

NGW K

Degree of protection of enclosures

Power of transformer up to

Chamber dimensions

width

height

depth

Rated voltage

Mass of the chamber without transformer

mm

higher up to 7,2 kV, lower up to 690 V

The transformer chamber NGW K for dry-typetransformer of maximum rated higher voltage up to7,2 kV and power 3150 kVA has the followingfeatures:

A chamber located next to the switchgear isconnected with busbars. Cable or busductconnections are possible.

enclosure made of sheet painted with qualitypowder paint

easy dismantling of front enclosures facilitatesinspections and drawing out of the transformer

characteristic lifting of enclosures

enclosures have no connecting elementsoutside

inside: a section of low voltage busbar.

Convenient dismantling of front enclosure of the chamber 15/0,4kV assembly for industrial use

Transformer chamberNGW K

Switchgear NGW R

Switchgear 15kV

65kA / 0,1s

IP4X

up to 630 kVA up to 1250 kVA up to 3150 kVA

1800 2200 2600

2150 2150 2600

1100 1400 1600

550 kg 660 kg 760 kg

�

�

ELEKTROBUDOWA SA

8. BUSDUCT

the encapsulation, made of shaped and perforated aluminiumsheet, performs the function of an enclosure

conductors for any alternating or direct current systems aremanufactured

double-bar conductors are symmetrically laid

holeless connections of phase bars sections

straight sections, elbows and connection pieces are seriallymanufactured in numerically controlled machining centres

convenient location of inspection windows

the enclosure is painted with quality powder paint, standard colourRAL7032, other colours possible.

18

The enclosed busbar trunking system is applied as aprimary or stand-by supply circuit and the interconnection betweensections. Its self-supporting structure has the following features:

NGW M-1

Busbar supply of the switchgearfrom the transformer room

a

b

h

a

h

b

a

h1

h2

a

b

h

a

b

h

Straight horizontal (vertical) section

Connection box

Vertical elbow

Horizontal elbow

Clamp Wall passage enclosure

NGW M-1a b h

mm

1,25 ÷ 2,0

5,5

NGW M-1a b h

mm

1,25 ÷ 2,0

2,5 ÷ 3,15

up to 3000

350

550

850

200

250

250

4,0 ÷ 5,5

600

600

1000

250

300

300

600

600

800

NGW M-1a h1 h2

mm

1,25 ÷ 2,0

2,5 ÷ 3,15

4,0 ÷ 5,5

350

400

400

250

300

300

400

600

1000

NGW M-1a b h

mm

1,25 ÷ 2,0

2,5 ÷ 3,15

4,0 ÷ 5,5

400

600

1000

250

300

300

517

717

1117

2,5 ÷ 4,0

19

Application of the NGW M-1 enclosed busbur trunking system in the transformer and switchgear rooms

sekcjaII

sekcjaI

pole

zasil.pole

zasil.

blok

sprzê.blo

k

sprzê.

pole

zasil.pole

zasil.

9 10 6 7

1

11

7

6

11

9 1

5

9

3

1

8

4

12

2

4

3

1

8

3

8 3

7. wall passage enclosure8. level raiser9. support sling10. support gantry11. wall bracket12. supporting structure

1. straight horizontal section2. straight vertical section3. connection box4. vertical elbow5. horizontal elbow6. clamp

Technical data of busduct

Characteristic value

Rated voltage of insulation

Impulse withstand voltage 1.2/50 ms

Rated current:continuous

Rated current peak

Rated current withstand 1s

The Cu phase conductor

Mass of 1m busduct

Cross-sectional area of the busbar

Mean value:

impedance

reactance

1250 1600 2500 3150 4000

110 110 170 205 205

45 45 75 90 90

2xP30x10 2xP40x10 2xP80x10 2xP100x10 2x[2xP80x10]

35 40 75 90 135

400x250 400x250 600x300600x300 1000x300

0,110

0,100

0,110

0,100

0,091

0,090

0,091

0,090

0,052

0,051

1000

14,5

Unit

A

kA

kA

kg

mm2

kV

V

2000

150

60

2xP50x10

50

400x250

0,110

0,100

/1,25 /1,6 /2,5 /3,15 /4,0/2,0 /5,5

5500

231

105

2x[2xP100x10]

175

1000x300

0,091

0,090

NGW M-1

Degree of protection

resistance 0,017 0,017 0,009 0,009 0,0040,017 0,009

IP43up to

mÙ/m

mm

ELEKTROBUDOWA SA

9. DESIGNINGELEKTROBUDOWA SA offers to make a design of the

switchgear.

functional units of the highest operating currents shall bearranged in the middle part of the sectionfunctional units performing the same functions shall begrouped together

9.1. Contents of the engineering design

9.2. Hints for designing

External connections and foundation frames ca besubject to agreement. Equipment other than from thecatalogue shall be agreed with the LV Construction Unitin Konin.

selection of apparatuscircuit and installation diagramslocation of apparatusmethod of entering the cables of the auxiliary circuits(type, quantity, cross sections)

Customers are requested to read the followingrecommendations before designing the switchgear.

Technical design of the switchgear should include:

layout of network in which the switchgear will work,required degree of protection,table of panels application descriptions,numbering and process descriptions,methods of separating the functional units,

1. technical description of the switchgear, including:

2. main circuits diagram with the apparatus andconnections (type, number, cross-section, capacity;arrangement of busbar connections, phasesequence)

3. arrangement of a section,4. glass window in the door,5. development of the auxiliary circuits:

6. selection of interlocks,7. summary of main and auxiliary circuit apparatus with

names of manufacturers on diskettes8. drawings of foundation and arrangement of sections,

with busbar connections, in the room,9. division into transport units,10. colours of front covers (as a standard RAL 7032 grey

recommended)

It is most convenient to design standard units specified inthe catalogue, following the guidelines:

1. functional units with withdrawable parts need the least space2. functional units with withdrawable or removable parts are more

convenient and safer in operation3. functional units with withdrawable or removable parts and

fixed-type units can be situated in the same section4. in units consisting of several panels:

5. in functional units which are to perform a small number ofoperations, a circuit breaker or a contactor can be replacedwith a mccb with a motor (M) or electromagnetic (S) operatingdevice

6. common circuits of the switchgear shall be arranged in thecommon circuits compartment

7. provision shall be made for auxiliary circuits compartment ofsuitable height to house the extended auxiliary circuits

8. in NGW R-2 IP55 assemblies and in assemblies filled with heatemitting equipment the capacity of electric fuses shall becorrected by a 0,8 ÷ 0,9 factor

9. the album of unified diagrams sent on request10. the same depth of all assemblies is recommended11. for any queries please contact the LV Construction Unit in

Konin, +48 63 2466 286.

NGW R-1 switchgear with digital modules- arrangement of a section

20

NGW R-1 - controlgear in SKP substation

Meter on the connections compartment’s door

11.

21

technical assistance

overall low and middle voltage electric power installation

professional fabrication and mounting of the foundation frame in the prepared room

transport of switchgear to the place of destination

installation of switchgears together with connections in the prepared room

supervision of installation performed by another company

Switchgear’s transport

10. TRANSPORT

The switchgear is designed for transport on truck.Other means, like a container or ship shall be specifiedwith your order. Transport units consist of a single sectionor 2 ÷ 4 sections of total width not exceeding 3 m. Totalmass of a transport unit shall not exceed 600 kg.Dimensions of the transport units shall be specified in thedesign or an order. Not shock-resistant apparatus,busbar sections and auxiliary equipment (lift truck, tester,keys, etc.). are transported in separate packages.

Loading and unloading with a hoisting crane ortravelling crane.

Storing is not recommended. The switchgear shouldbe delivered directly to the installation place, suitablyprepared.

ORDERING

ELEKTROBUDOWA SA offers:

An order should include technical data of the switchgear, engineering design developed according to the guidelines ofchapter 9 “DESIGNING” and number and kind of equipment from item 4.8..

Product warranty terms are specified in the “Guarantee Certificate”.To maintain the guarantee the user shall follow the manufacturer's requirements and rules stated in the operation and

maintenance manual (O&M). The guarantee for the switchgear does not cover apparatus supplied by the Client.

L1, L2, L3 0,4kV; 1250A 1.1 1. 2 2. 2 2. 3 2. 4. 1 2. 4. 2 2. 4. 3 2. 5

NH00125

ISN500/5A

NT 1.61600A

DEHNquard

M

QSA400400A

LSV400Ls4

3RV134100A

I >

3RV134100A

I >

3RV133100A

2x3RT1034

OS 4040A

LS 17

2x 3x1

2

B77T

2x 3x1

22x 3x

1

2

2x 3x1

2

2x 3x1

2

2x 3x1

2

DP/3WN6

ST

ER

OW

AN

IE

D1

16x24V

DC

D0

16x24V

DC

STEROWNIK

S7-300315-2DP

PS-3075A

SIMCODE3UF50

3UF5041-3.N0-1

3UF5021-3.N0-1

SIMCODE3UF50

3RT1046

3UF5021-3.N0-1

SIMCODE3UF50

SIMCODE3UF51

SIMCODE3UF52

BATERIAKONDENSATORÓW

1

1

PI 81

5A/4-20mA

M M M M

M

POMPA POMPA POMPA

ZASILANIE200kW

350A45kW

84A15kW

30A

15kW30A

A schematic diagram of the NGW R switchgear with digital modules

© Copyright by ELEKTROBUDOWA SAAll rights reserved. Subject to change without prior notice

® If not stated otherwise on the individual pages on this catalog, we reserve the right to include modifications, especiallyregarding dimensions and weights.Drawing are not binding.All product destignations used are trademarks product names of ELEKTROBUDOWA SA and other suppliers.

ELEKTROBUDOWA SA40-246 Katowice, ul. Porcelanowa 12tel. 48 32 2590 100 fax 48 32 205 27 60e-mail:http://www.elbudowa.com.pl

@elbudowa.com.plelbudowa

Power Distribution Division62-505 Konin, ul. Przemys³owa 156

tel. 48 63 2466 200 fax 48 63 2427 292e-mail: dystrybucja@elbudowa.com.pl

Edition Number Konin April 2009

We are in your disposal in any questions.

MARKETING OFFICE

Marketing Office - Overseas Market62-505 Konin, ul. Przemys³owa 156tel. +48 63 2466 371/348, fax +48 63 2466 304e-mail: dystrybucja.expzachod@elbudowa.com.pl

Company Head Office