NSPB-MVLV_catalog[V7]

8/12/2019 NSPB-MVLV_catalog[V7]

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1. Introduction

NSPB (non-segregated phase bus) LV, MV is an assembly of bus conductors with associated connections, joints and insulating

supports confined within a metal enclosure without inter-phase barriers.

The insulation property of NSPB LV-MV is very reliable, because bus bars are adequately separated and insulated with

EPOXY from each other.

To optimize bus bar supports and bus bar size, LSC use mechanical, thermal and electrical analysis. NSPB LV-MV is designed

and produced for IEEE C 37.23 and IEC 62271-200, and has certification of PT & T (LSIS, KOLAS) and KERI (Korea electro

technology research institute) about short-circuit strength, dielectric properties and temperature-rise limits.

HOUSING

Housing of NSPB LV-MV is usually Aluminum Alloy, but user can optionally choose SPCC (three-planes) and STS (one

plane). Housing is basically painted with 5Y/7/1, but user can customize its various colors. And the paint of housing and plate

are certificated by RoHS. To prevent dew condensation, LSC use SPACE HEATER and AIR VENTILATION in outdoor

products.

GROUNDING SYSTEM

Aluminum housing has PE(Protect Earth) function. Whereas user wants SPCC, additional Ground Bar can be applied. Fault

current that is caused by ground accident can be flowed out through ground bar so that it can maintain its performance in

contact with body and others.

CONDUCTOR

Bus conductors are fixed by bolted connections, which surfaces are tin-plated. Bus conductors can continuously carry the rated

current without exceeding the hottest temperature rise of 65 over the outside ambient temperature at 40.

CONDUCTOR INSULATION

The insulation of bus bars is Epoxy powder coated by Fluidized method. Total thickness after insulation becomes 1~1.2mm.

The process of insulating shall be performed under clean condition and the insulation class is B (130).

CONDUCTOR SUPPORTORS

SUPPORTING INSULATOR

Epoxy mold which has good electric and mechanic properties is applied to bus bars supports. To maintain the stability in short-

circuit condition; it is optimized by using CAE (Computer Aided Engineering) analysis. It is made of highly-effective (high

endurance and fire resistance) and eco-friendly materials.

SILICONE SPACER

To support bus bars, silicone is applied with epoxy mold. Silicone can contribute to both the ease of assembling and impact-

absorbing by short-circuit condition. Additionally, it can reduce the rattling noise that caused by bus bar vibration during

operation.

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Cable Ltd. user license only, These documents are property of LS Cable Ltd.



APPLIED STANDARD

IEEE C 37.23 : Metal-Enclosed Bus.

IEC 62271-200 : AC metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52kV.

TEMPERATURE RISE

The bus will be capable of carrying rated current continuously without exceeding a conductor temperature rise of 65ºC over an

outside ambient temperature of 40ºC, as required by IEEE C 37.23.

SHORT CIRCUIT WITHSTAND ABILITY

NSPB LV-MV are designed to withstand electrical and mechanical forces generated by momentary peak (during 10 cycle) and

short-time (LV : 1sec., MV : 2 sec.) short circuit currents in accordance with the latest IEEE C 37.23. For LV application, 4-

cycle momentary current withstand rating up to 50 kA (rms symmetrical) is also available.

1.1 Product Description

Splice Joint

Conductors are tin-plated for maximum conductivity (silver-plating is optional).

While the higher ratings use two conductors per phase, adjacent sections are electrically bonded together by means of plated

copper splice plates to provide electrical continuity. All splice joints should be fastened by 250kg.cm torque.

Bolt-Nut Boot Connection

Bolt-nuts of Bus joints are insulated with a flame-retardant PVC boot, easily removable for joint inspection.

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2. Specification and Dimension

2.1 Construction

Bus joints are solidly made by bolting the bus bars together with splice plates on each side. All joint surfaces are tin-plated or

silver-plated to ensure maximum conductivity through the joint.

After bolting, each standard joint is covered by a preformed, flame-retardant insulating bolt-nut boots so that it can provide full

insulation for bus conductors (5 kV and above). These boots are easily removable for inspection of the joints at any future time.

The copper bus bars are mounted on supports of track resistant, flame-retardant reinforced epoxy support. If boots are not

available for connection, taping the joint will be required.

Detail Construction

2.2 Technical data

Rated Max.

voltage

(kVrms)

Power frequency

withstand voltage

(kVrms), 60Hz

Impulse

withstand

1.2×50

(kVpeak )

Rated

continuous

current (A)

Short-circuit withstand

current (kArms), 2sec.

Short-circuit

withstand

current

(kApeak )

Short-circuit

withstand current

(kArms asym.)

0.635 and

4.76

19 60630~1000

1250~2000

2500~5000

50(65)

104

130(170)

170(208)

54

67(87)

87(106)15 36 95

27 60 125

* More detail current ratings show Clause 2.3

* ( ) of short-circuit current can perform in case reinforce.(optional)

* IEC Standard class can apply 7.2, 12, 24kV

* Applied standard : IEEE C37.23

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2.3 Dimension data1) Rated voltage : 0.635kV ~ 4.76 kV (IEC : upto 7.2 kV)

Cross-sections

Aluminum conductor

Current

(A)

Busbar size

[mm]

Total Size [mm]

S [mm]

Earth bar

[mm]

Resistance

[µΩ/m-1Φ]

Reactance

(µΩ/m-1Φ)

Impedance

(µΩ/m-1Φ)

Weight [kg/m]

W H Al Housing Fe Housing

630 6*75 416 280

80

6.35*41 81.87 145.26 166.74 25.1 40.8

800 6*75 416 284 6.35*41 81.87 145.26 166.74 25.1 40.8

1000 6*102 416 312 6.35*41 61.12 125.93 139.98 26.8 43.1

1250 10*100 416 310 6.35*41 39.55 124.43 130.56 31.9 48.1

1600 10*145 416 355 6.35*41 28.39 102.82 106.67 36.2 53.4

2000 10*180 416 390 6.35*41 23.52 90.9 93.89 39.5 57.5

2500 12*245 416 455 6.35*41 15.62 74.51 76.13 49.6 69.1

3200 2*12*176 932 531

140

6.35*41 11.43 84.15 84.92 77.9 106.7

4000 2*12*260 932 615 6.35*41 8.19 65.06 65.57 95.6 126.1

Copper conductor

Current

(A)

Busbar size

[mm]

Total Size [mm]

S [mm]

Earth bar

[mm]

Resistance

[µΩ/m-1Φ]

Reactance

(µΩ/m-1Φ)

Impedance

(µΩ/m-1Φ)

Weight [kg/m]


630 6*67 416 277

80

6.35*41 57.29 152.45 162.86 32.1 47.6

800 6*67 416 277 6.35*41 57.29 152.45 162.86 32.1 47.6

1000 6*67 416 277 6.35*41 57.29 152.45 162.86 32.1 47.6

1250 6*96 416 306 6.35*41 41.09 129.7 136.05 37.1 53.3

1600 10*95 416 305 6.35*41 26.96 127.49 130.31 47.1 63.2

2000 10*133 416 343 6.35*41 20.2 107.74 109.62 59.8 76.7

2500 12*168 416 378 6.35*41 14.43 93.82 94.92 78.5 96.3

3200 12*237 416 447 6.35*41 10.77 76.12 76.88 101.6 120.9

4000 2*12*180 932 615 140 6.35*41 7.48 82.98 83.32 160.4 190.9

* Bus temperature : 80.

* LV busduct(0.635kV and below), engineering plastic supports are applied. MV busduct (above 0.635kV), epoxy supports are available

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2) Rated voltage : 15 kV (IEC - 12 kV)

Aluminum conductor

Current

(A)

Busbar size

[mm]

Total Size [mm]

S [mm]

Earth bar

[mm]

Resistance

[μΩ/m-1Φ]

Reactance

[μΩ/m-1Φ]

Impedance

[μΩ/m-1Φ]

Weight [kg/m]


630 6*65 656 420

140

6.35*41 94.02 190.96 212.85 34.6 55.8

800 6*65 656 420 6.35*41 94.02 190.96 212.85 34.6 55.8

1000 6*87 656 442 6.35*41 71.04 171.53 185.96 36.0 57.6

1250 10*84 656 439 6.35*41 46.38 170.65 176.84 38.5 60.1

1600 10*125 656 480 6.35*41 32.37 145.26 148.82 42.5 64.9

2000 12*150 656 505 6.35*41 23.77 132.82 134.93 47.4 70.2

2500 12*213 656 568 6.35*41 17.6 111.54 112.92 54.5 78.6

3200 2*12*176 932 531 6.35*41 11.43 84.15 84.92 77.9 106.7

4000 2*12*260 932 615 6.35*41 8.19 65.06 65.57 95.6 126.1

Copper conductor

Current

(A)

Busbar size

[mm]

Total Size [mm]

S [mm]

Earth bar

[mm]

Resistance

[μΩ/m-1Φ]

Reactance

[μΩ/m-1Φ]

Impedance

[μΩ/m-1Φ]

Weight [kg/m]


630 6*65 656 420

140

6.35*41 58.94 190.96 199.85 41.8 63.0

800 6*65 656 420 6.35*41 58.94 190.96 199.85 41.8 63.0

1000 6*65 656 420 6.35*41 58.94 190.96 199.85 41.8 63.0

1250 6*72 656 427 6.35*41 53.55 184.16 191.79 43.1 64.4

1600 10*80 656 435 6.35*41 31.36 173.76 176.57 53.0 74.5

2000 10*112 656 467 6.35*41 23.39 152.26 154.05 62.1 84.2

2500 12*145 656 500 6.35*41 16.36 134.92 135.91 79.2 101.9

3200 12*203 656 558 6.35*41 12.26 114.39 115.05 98.7 122.6

4000 2*12*180 932 535 6.35*41 7.48 82.98 83.32 159.1 188.0

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3) Rated voltage : 27 kV (IEC - 24 kV)

Aluminum conductor

Current

(A)

Busbar

size [mm]

Total Size [mm]

S [mm]

Earth bar

[mm]

Resistance

[μΩ/m-1Φ]

Reactance

[μΩ/m-1Φ]

Impedance

[μΩ/m-1Φ]

Weight[kg/m]


630 6*61 942 546

220

6.35*41 94.02 222.95 241.96 44.3 73.7

800 6*61 942 546 6.35*41 94.02 222.95 241.96 44.3 73.7

1000 6*81 942 566 6.35*41 79.83 211.45 226.02 45.1 74.7

1250 10*78 942 563 6.35*41 49.67 207.11 212.98 47.7 77.3

1600 10*111 942 596 6.35*41 35.99 183.93 187.42 50.9 81.2

2000 12*134 942 619 6.35*41 26.2 170.41 172.41 55.3 86.0

2500 12*187 942 672 6.35*41 19.66 148.66 149.95 61.3 93.1

3200 2*12*146 1242 631 6.35*41 13.44 120.31 121.06 78.7 115.6

4000 2*12*235 1242 720 6.35*41 8.95 92.26 92.69 97.5 136.1

Copper conductor

Current

(A)

Busbar

size [mm]

Total Size [mm]

S [mm]

Earth bar

[mm]

Resistance

[μΩ/m-1Φ]

Reactance

[μΩ/m-1Φ]

Impedance

[μΩ/m-1Φ]

Weight[kg/m]


630 6*65 942 550

220

6.35*41 58.94 222.95 230.61 51.6 80.9

800 6*65 942 550 6.35*41 58.94 222.95 230.61 51.6 80.9

1000 6*65 942 550 6.35*41 58.94 222.95 230.61 51.6 80.9

1250 6*72 942 557 6.35*41 53.55 216.32 222.56 52.8 82.3

1600 10*74 942 559 6.35*41 33.6 210.53 213.19 61.1 90.6

2000 10*102 942 587 6.35*41 25.35 189.52 191.21 69.0 99.1

2500 12*126 942 611 6.35*41 18.4 174.44 175.41 82.5 113.1

3200 12*180 942 665 6.35*41 13.59 151.44 151.75 100.7 132.3

4000 2*12*152 1242 637 6.35*41 8.66 117.83 118.15 147.8 184.8

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3. FittingsMV Busduct has a complete range of fittings to satisfy all lay-out conditions. Angles other than 90° are available. Fittings

designations are shown in the following figures and are based on the source-side and the load-side of the device. Offset and

combination elbows are used where standard elbows are not feasible.

1) Elbow fitting

Horizontal Elbow Vertical Elbow

2) Offset

Horizontal Offset Vertical Offset

3) Combination Elbow-Fittings

4) Tee-fittings

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4. Installation diagram

5. joint sealing

<Indoor type> <Outdoor type>

Joint cover

Joint cover

Final cover

Final cover

Gasket

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Documents

NSPB-MVLV_catalog[V7]