Generator Circuit-Breaker Systems HEC 7/8

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Generator Circuit-Breaker Systems HEC 7/8

Technical Data Generator circuit-breaker system type

HEC 7A/8A

HEC 7B/8B

HEC 7C/8C

30

27.5

25.2

General Rated maximum voltage

kV

Rated frequency

Hz

50/60

50/60

50/60

Rated continuous current 50 Hz HEC 7 naturally cooled

A rms

up to 25000

up to 25000

up to 25000

HEC 8 naturally cooled

A rms

up to 28000

up to 28000

up to 28000

(enhanced convection)

Rated continuous current 60 Hz HEC 7 naturally cooled

A rms

up to 22000

up to 22000

up to 22000

HEC 8 naturally cooled

A rms

up to 26500

up to 26500

up to 26500

to earth and across circuit-breaker/switch contacts

kV rms

80

80

80

across isolating distance of disconnector

kV rms

88

88

88

to earth and across circuit-breaker/switch contacts

kV peak

150

150

150

across isolating distance of disconnector

kV peak

165

165

165

kA peak

466

521

575

kA, 3s

170

190

210

kA peak

466

521

575

kA rms

170

190

210

(enhanced convection)

Rated insulation level Rated power frequency withstand voltage

Rated lightning impulse withstand voltage

Circuit-breaker Rated peak withstand current Rated short-time withstand current Rated short-circuit making current Rated short-circuit breaking current Rated operating sequence

CO - 30min - CO

Opening time

ms

33 ± 3

33 ± 3

Rated interrupting time

ms

58

58

33 ± 3 58

Mechanical endurance life

CO

10000

10000

10000

kA peak

466

521

575

kA, 3s

170

190

210

s

2

2

2

kA peak

466

521

575

kA, 1s

170

190

210

s

2

2

2

Disconnector Rated peak withstand current Rated short-time withstand current Operating time Earthing Switch Rated peak withstand current Rated short-time withstand current Operating time

The above data are not limiting values. Additional data on request. We reserve the right to alter data and technical details without notice.

Equipment Options 1 Generator circuit-breaker 2 Line disconnect switch 3 Earthing switch 4 Manual short-circuiting connection (by removal of cover) 5 Surge capacitor 6 Current transformers 7 Voltage transformers 8 Surge arrester

2 | ABB

4 7

7 G

1

6

5

3

2

6

3

5

8

Dimension Drawing HEC 7

min. 2900

1600-1750

Ø 1250

1300 *)

4000 *)

3260

5000 *)

Transformer Side

Generator Side

1200 *)

2000

N(1650-2100)

N(1650-2100)

810

390 *)

4400 + 2N *)

N = Phase distance *) min. space required for erection and maintenance

ABB | 3

Dimension Drawing HEC 8

1600-1750

min. 3400

Ø1250

1300 *)

Generator Side

1200 *)

2000

N(1850-2100) 4400 + 2N *)

N = Phase distance *) min. space required for erection and maintenance

4 | ABB

N(1850-2100)

900

300 *)

4000 *)

3260

5000 *)

Transformer Side

ABB Switzerland Ltd High Voltage Products Brown Boveri Strasse 5 CH-8050 Zurich / Switzerland Phone: +41 58 588 34 24 Email: [email protected]

Note

www.abb.com/gcb

possible lack of information in this document.

We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or

We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization of its contents in whole or in parts – is forbidden without prior written consent of ABB. Copyright© 2012 ABB All rights reserved

© Copyright ABB. 1HC0070730 E02 / AC14

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