scb_9003.a.e surge arrestor

EXPERTS IN HIGH VOLTAGE

● Excellent protective characteristics

● High energy absorbtion capability

● High pressure relief capability

● Light weight

● Simple design - reliable service

● Possibility of monitoring in service

HEAVY DUTY METAL-OXIDESURGE ARRESTER

RATED VOLTAGE 60 - 444 kVNOMINAL CURRENT 10 kA,

CLASS 3

9003.a.E

MORE THAN 75 YEARS OF EXPERIENCE

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APPLICATIONSurge Arrester type SCB is intended for overvoltageprotection in HV networks, effectively grounded,ungrounded or impedance grounded, in environmen-tal condition where average temperature does notexceed +40 °C, and maximum temperature does notexceed +60 °C.

DESIGNATIONSCB.3 145-94/120

SC - Surge Arrester ("SC" from Italian word"Scaricatore")

B - Second generation3 - Line discharge class

145 - System voltage94 - Continuous operating voltage Uc of

Surge Arrester120 - Rated voltage Ur of Surge Arrester

STANDARD COMPLIANCEIEC 99 - 4/1991ANSI IEEE std. C 62.11 - 1993

MAIN TECHNICAL PARAMETERS- Rated voltage Ur: 60 - 444 kV- Nominal current In: 10 kA - High current (4/10 µs): 100 kA- Long duration current: 800 A - 1000 A- Long duration time: 2400 µs - 2000 µs- Line discharge class (IEC): 3 (**)- Pressure relief class: A (50/65* kA)- Energy capability (within 1 min.): 7.5 kJ/kV Ur

* on request** on requests classes 2 or 4

DESIGNPassoni & Villa surge arresters are gapless type.Metal oxide blocks with high non linear characteri-stic, are placed in series inside high strength porce-lain (on request composite envelope, resin fiber glasstube with silicon sheds and surge arrester for GIS).Surge arrester consists of one or more units: eachunit is hermetically sealed and on both ends of porce-lain are cemented aluminium flanges provided withventing port.When the Surge Arrester is equipped with Surgecounter, high strength insulating sub-bases areinstalled on the bottom.

2

Fig. 1

TIME (Seconds)

View "B"

SYST

EM

OV

ER

VO

LT

AG

E(p

er u

nit

of

Arr

este

r ra

ted

vol

tag

e)

TEMPORARY OVERVOLTAGE CAPABILITY(at ambient temperature 60 °C)

Fig. 2

PROFILE OF PORCELAINRated creep distancebetween X and Y = 268.30 mmRated creep distanceat 90° = 148.66 mm

Y

X


Fig. 3 Fig. 4 Fig. 5

3

264276288300

228240258264

120132141144

180186192198228

96102108120

141144150162168

396420444

849096

606672

312336360

208218228238

178188203208

94104110114

144149154156178

77808494

110114119129131

312331349

677277

475257

245267282

712745777809

615647696712

324357381389

486502519534615

260275292324

381389405437457

107011351200

227244260

162179195

842906971

605632660687

523550591605

275303324330

413427441454523

221234248275

324330344372386

907962

1020

193207221

138152166

715770825

647676706735

558588632647

294324346353

441456471485558

236250265294

346353368397412

97010301090

206221236

147162177

765823882

701733764796

605637685701

319351375383

478494510526605

256271287319

375383399431447

105011151180

223240256

160176192

828891955

507530553576

439461498507

231254271277

346358370381439

185196208231

271277289312323

761807853

162174185

116127139

599646692

538562587611

465489526538

245270288294

367380392404465

197208221245

288294306330343

807855904

172184197

123135148

636685733

190190205205

170170175190

85959595

145145145145160

70757585

95100100130135

270270280

606065

(2)Weight

(kg)

657070

250250250

2500275027502750

2250225025002500

1140114011401140

19101910191020802250

970114011401140

11401140114019101910

412041204120

970970970

(1)Height (mm)

970970970

337033703370

3333

2223

1111

22222

1111

11122

555

111

111

Fig.No.

4*44

362

300

145

245

123

170

525

100

72.5

System voltageUm (kV)

Rated voltageUr (kV)

Continuous operatingvoltageUc (kV)

Steep current impulse (1/20 µs)

10 kA 5 kA 10 kA 20 kA 250 A 1000 A

Lightning current impulse (8/20 µs)

Maximum residual voltages Ures (kVp)

Technical characteristics

Switching current impulse (30/60 µs)

420

* Grading ring like Fig.2

NOTE: (1) (2):Given values are mainly based on specific creepage of 25 mm/kV.For other specific creepage values, heights and weights are different.

Alt

erat

ion

res

erve

d

9

003.

a.E

- 2

000

- 03

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UNI - EN 29001 (ISO 9001)CSQ is a member of EQNet

CSQ n° 9105 PASS

Our Quality Assurance System is certified to EN 29001-ISO 9001Quality in High Voltage

our tradition for more than 75 years

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FABBRICA ISOLATORI E CONDENSATORI S.p.A. - V.le Suzzani, 229 - 20162 Milano (Italy) - Tel. (02) 661221 Sede legale in Milano - Iscr. Reg. Canc. Trib. Milano Soc. N. 22966 - C.C.I.A.A. Milano 89754 M. 490801 - E-mail:[email protected] - Fax (02) 6470906 - Web site: www.passoni-villa.com

scb_9003.a.e surge arrestor

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