Bushing current transformers

   CB SERIES  

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Indoor or Outdoor

Primary current from 50 to 60000 A

Inner diameter from 40mm

 to 500 mm

Insulation 0.75/4 kV

Measurement and protection

 

 

Current transformers moulded in self-extinguishing resin for the measurement of AC current from 50 to 60000A.

With inner diameters between 40 and 500 mm, these transformers are often used on bushing of power transformers. Or on generator bushing insulators. 2 versions, indoor or outdoor, are available. The outdoor version is equipped with weatherproof terminal box fitted with 2 cable glands.

 

  

Technical data

Highest voltage for equipment

750V

 

 

power-frequency withstand voltage

4000V

 

 

primary current Ipn

 

50 to 60000A

 

secondary current Isn

 

5 or 1A

 

 

Frequency

 

 

50 or 60 Hz

 

 

Rated output

 

1 to 500 VA

 

 

Accuracy class

 

0.5 - 1 – 3 – 5p – 10p -ClX

 

Security factor

 

5 to 30

 

 

Accuracy limit factor

 

5-10-15-20-30

 

 

Continuous thermal current

1.2 to 1.5Ipn and 2Ipn

 

short-time thermal current Ith

25 to 1000Ipn

 

 

Dynamic current Idyn

 

2.5Ith

 

 

Insulation class

 

E

 

 

Altitude

 

1000 m

 

Ambient temperature

 

-5C° to + 40 C°

-25C° to + 40 C°

-40C° to + 40 C°

 

Standards

 

 

IEC60044-1, IEC61869-2, IEC60044-2



Other characteristics on request

Highest voltage for equipment

Up to 2400 V

 

power-frequency withstand voltage

Up to11 KV

 

secondary current Isn

 

0.005 to 10 A

 

Frequency

 

 

1 to 10000 Hz

 

Accuracy class

 

0.1 - 0.2 - 0.2S -0.5S-5P-10P-clX

Accuracy limit factor

 

5 - 10 - 15 - 20 - 30

 

Multi - ratio

 

 

By secondary tapping

 

 

Multiple cores

 

Up tp 4 cores

 

 

Continuous thermal current

1.2 to 1.5Ipn and 2Ipn

 

 

Ambient temperature

 

-40C° to + 70 C°

 

Standard

 

 

ANSI C57.13 – CAN3 C13 – AS 1675

 

 

Accessories/Option

Water proof terminal cover

 

 

 

Standard on outdoor version

 

 



 

 

selection table and dimensions

 

Type

A

B

C

D

E

F

mm

mm

mm

mm

mm

mm

CB150

 

40

150

80

178

126

163

 

 

70

150

80

178

126

163

 

 

90

150

80

178

126

163

 

 

110

150

80

178

126

163

CB200

 

125

200

100

234

165

216

 

 

135

200

60

234

165

216

 

 

100

200

100

234

165

216

 

 

100

200

150

234

165

216

 

 

135

200

100

234

165

216

CB210

 

100

210

60

249

176

226

 

 

120

210

60

249

176

226

 

 

100

210

100

249

176

226

 

 

80

210

120

249

176

226

 

 

120

210

120

249

176

226

CB230

 

160

230

80

262

183

243

CB237

 

130

237

60

262

185

254

CB240

 

106

240

60

262

185

254

 

 

120

240

60

262

185

254

 

 

130

240

60

262

185

254

 

 

130

240

80

262

185

254

 

 

106

240

100

262

185

254

CB250

 

120

250

75

284

201

267

 

 

120

250

75

284

201

267

 

 

70

250

80

284

201

267

 

 

80

250

80

284

201

267

 

 

90

250

80

284

201

267

 

 

100

250

80

284

201

267

 

 

110

250

80

284

201

267

 

 

120

250

80

284

201

267

 

 

150

250

80

284

201

267

 

 

160

250

80

284

201

267

 

 

120

250

50

284

201

267

 

 

150

250

50

284

201

267

 

 

150

250

60

284

201

267

 

 

150

250

70

284

201

267

 

 

90

250

100

284

201

267

 

 

120

250

100

284

201

267

 

 

150

250

100

284

201

267

 

 

170

250

100

284

201

267

 

 

80

250

120

284

201

267

 

 

100

250

120

284

201

267

 

 

120

250

120

284

201

267

 

 

150

250

120

284

201

267

 

 

160

250

120

284

201

267

 

 

170

250

120

284

201

267

 

 

180

250

120

284

201

267

 

 

110

250

250

284

201

267

selection table and dimensions

Type

A

B

C

D

E

F

mm

mm

mm

mm

mm

mm

CB280

 

 

80

280

100

326

231

300.5

 

 

100

280

150

326

231

300.5

 

 

100

280

200

326

231

300.5

 

 

120

280

100

326

231

300.5

 

 

150

280

100

326

231

300.5

 

 

120

280

150

326

231

300.5

 

 

150

280

150

326

231

300.5

 

 

150

280

200

326

231

300.5

 

 

170

280

80

326

231

300.5

 

 

180

280

80

326

231

300.5

 

 

195

280

80

326

231

300.5

 

 

170

280

120

326

231

300.5

 

 

170

280

150

326

231

300.5

 

 

170

280

200

326

231

300.5

CB300

 

150

300

50

333.5

236

335

 

 

150

300

70

333.5

236

335

 

 

160

300

70

333.5

236

335

 

 

170

300

70

333.5

236

335

 

 

150

300

90

333.5

236

335

 

 

110

300

250

333.5

236

335

 

 

150

300

250

333.5

236

335

 

 

150

300

200

333.5

236

335

 

 

170

300

200

333.5

236

335

 

 

180

300

50

333.5

236

335

 

 

180

300

75

333.5

236

335

 

 

180

300

90

333.5

236

335

 

 

180

300

115

333.5

236

335

 

 

200

300

50

333.5

236

335

 

 

200

300

50

333.5

236

335

 

 

200

300

75

333.5

236

335

 

 

200

300

90

333.5

236

335

selection table and dimensions

Type

A

B

C

D

E

F

mm

mm

mm

mm

mm

mm

CB350

 

100

350

180

383

271

376

 

 

170

350

180

383

271

376

 

 

220

350

180

383

271

376

 

 

75

350

200

383

271

376

 

 

100

350

200

383

271

376

 

 

120

350

200

383

271

376

 

 

150

350

200

383

271

376

 

 

200

350

200

383

271

376

 

 

100

350

260

383

271

376

 

 

120

350

260

383

271

376

CB360

 

140

360

80

397

281

386

 

 

180

360

80

397

281

386

 

 

220

360

80

397

281

386

 

 

280

360

80

397

281

386

 

 

120

360

100

397

281

386

 

 

150

360

100

397

281

386

 

 

150

360

140

397

281

386

 

 

200

360

100

397

281

386

 

 

230

360

60

397

281

386

 

 

250

360

100

397

281

386

CB400

 

150

400

120

438

310

417

 

 

200

400

120

438

310

417

 

 

250

400

120

438

310

417

 

 

250

400

170

438

310

417

 

 

300

400

120

438

309

418

 

 

310

400

120

438

309

418

 

 

300

400

200

438

309

418


*This document is the property of Pars Shar and maybe changed without prior notice*