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11kV Porcelain Housing Metal-oxide Surge Arrester

Application Protection of medium/high voltage AC networks against both, multiple atmospheric and switching overvoltage as well as Very Fast Transients (VFT). Suitable for the protection of transforme

Application

Protection of medium/high voltage AC networks against both, multiple atmospheric and switching overvoltage as well as Very Fast Transients (VFT). Suitable for the protection of transformers, transformers in arc fumace applications, cables, generators, parallel to capacitor banks, and railway vehicles. Can be used mechanically as support insulator or as suspension insulator in case of application as line arrester. For indoor and outdoor installation.

 

Keystone

The metal-oxide surge arrester (MOSA) is the most advanced overvoltage protector in the word. Due to make the varistor of core component mainly adopt MOSA. Compared with the conventional silicone carbide arrester, this prescription of the product improves greatly the Voltage-Current(U-I) characteristic of the metal-oxide varistor and increased through-current capability at over-voltage so as to bring a radical-changes for the characteristic of the MOSA.

Under the circumstance of normal operating voltage, the current through the MOSA just on microampere degree. When suffered from overvoltage, the MOSA's excellent non-linear characteristic will make the current through the MOSA increase to several thousand ampere, While the MOSA will be under the circulating state and release overvoltage energy so as to protecting the power transmission equipments against the damage caused by the overvoltage.

 

Usual service condition

a) Ambient air temperature within the range of -55℃ to+50℃.

b) Altitude not exceeding 2000m.

c) Frequency of the A.C. power supply not less than 48Hz and not exceeding 62Hz.

d) Power frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage.

e) Maximum wind speed not exceeding 35m/s.

f) Earthquake intensity not exceeding 7 degrees.

 

Advantage

-Low residual voltage

-Long protection distance

-High energy input capacity

-Stable U-I characteristic even after multiple strokes

-Proof against ageing

-Explosion and shatter-resistant design

-Pollution resistant and UV-stable

-Housing resistant to rough handling

-Maintenance free

-Stable against shock and vibration

-High mechanical resistance

 

Technical Performance

The technical performance of metal-oxide surge arrester is accord with IEC60099-4, IEEE(ANSI)C62.11 and GB11032.

 

Y5W, Y5C, Yl0W, YI0C Series Porcelain Housing Metal-oxide Surge Arrester

11kV Porcelain Housing Metal-oxide Surge Arrester

Table 1-Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 5Ka

 

Rated Voltage

kV

3

6

9

10

12

15

18

21

24

27

30

33

36

 

Nominal discharge current

kA

5

5

5

5

5

5

5

5

5

5

5

5

5

1

Type

 

Y5C-3

Y5C-6

Y5C-9

Y5C-10

Y5C-12

Y5C-15

Y5C-18

Y5C-21

Y5C-24

Y5C-27

Y5C-30

Y5C-33

Y5C-36

2

Continuous operating voltage

kV

2.55

5.10

7.65

8.40

10.20

12.70

15.30

17.00

19.50

22.00

24.40

26.70

29.00

3

Residual voltage at Lighting impulse 8/20μs

kV

9

18

27

30

36

45

54

63

72

81

90

99

108

4

Power frequency discharge voltage≥

kV

5.5

11

16

18

22

26

33

36

40

45

50

56

61

5

1.2/50μs Impulse discharge voltage≤

kV

9

18

27

30

36

45

54

63

72

81

90

99

108

6

2ms rectangular current withstand

A

100/150

100/150

100/150

100/150

100/150

100/150

100/150

100/150

100/150

100/150

100/150

100/150

100/150

7

4/10μs high current impulse withstand

kA

65

65

65

65

65

65

65

65

65

65

65

65

65

8

Housing insulation level

 

8.1

-Power frequency, wet

kV

40

60

65

75

95

105

120

125

135

155

170

185

190

8.2

-Lightning impulse

kV

100

110

110

140

140

140

160

170

180

190

200

220

240

9

Creepage distance/rated voltage ratio

mm/kV

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

Table 2 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

 

Rated Voltage

kV

3

6

9

10

12

15

18

21

24

27

30

33

36

 

Nominal discharge current

kA

10

10

10

10

10

10

10

10

10

10

10

10

10

1

Type

 

Y10C-3

Y10C-6

Y10C-9

Y10C-10

Y10-12

Y10-15

Y10C-18

Y10C-21

Y10C-24

Y10C-27

Y10C-30

Y10C-33

Y10C-36

2

Continuous operating voltage

kV

2.55

5.10

7.65

8.40

10.20

12.70

15.30

17.00

19.50

22.00

24.40

26.70

29.00

3

Residual voltage at Lighting impulse 8/20μs

kV

9

18

27

30

36

45

54

63

72

81

90

99

108

4

Power frequency discharge voltage≥

kV

5.5

11

16

18

22

26

33

36

40

45

50

56

61

5

1.2/50μs Impulse discharge voltage≤

kV

9

18

27

30

36

45

54

63

72

81

90

99

108

6

2ms rectangular current withstand

A

200/250

200/250

200/250

200/250

200/250

200/250

200/250

200/250

200/250

200/250

200/250

200/250

200/250

7

4/10μs high current impulse withstand

kA

100

100

100

100

100

100

100

100

100

100

100

100

100

8

Housing insulation level

 

8.1

-Power frequency, wet

kV

40

60

65

75

95

105

120

125

135

155

170

185

190

8.2

-Lightning impulse

kV

100

110

110

140

140

140

160

170

180

190

200

220

240

9

Creepage distance/rated voltage ratio

mm/kV

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

≥25

 

11kV Porcelain Housing Metal-oxide Surge Arrester

Table 3 Main Technical Parameter of Porcelain Housing Metal-oxide Surge Arrester with Series Gaps

Nominal Discharge Current: 10Ka

 

Rated Voltage

kV

39

42

45

48

51

54

60

66

69

72

75

84

90

96

108

120

 

Nominal discharge current

kA

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

1

Type

 

Y10W-39

Y10W-42

Y10W-45

Y10W-48

Y10W-51

Y10W-54

Y10W-60

Y10W-66

Y10W-69

Y10W-72

Y10W-75

Y10W-84

Y10W-90

Y10W-96

Y10W-108

Y10W-120

2

Continuous operating voltage

kV

31.5

33.6

36.5

39.0

40.8

42.0

48.0

52.8

55.2

57.0

60.0

67.2

70.0

76.0

84.0

98.0

3

Residual voltage at

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.1

Lighting impulse 8/20μs

kV

103

111

119

127

135

143

159

175

183

191

199

218

222

237

266

295

3.2

-Steep current impulse 1/10μs

kV

117

126

128

139

151

160

178

196

205

214

223

244

249

265

298

330

3.3

-Switchgear impulse 30/60μs(10kA&up)

kV

94

101

102

110

115

119

132

145

152

158

165

181

184

197

221

245

3.4

Switching surge(class 1)

kA

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

4

Long duration current impulse withstand

 

 

4.1

-Line discharge class(10kA&up)

 

1/2/3

4.2

-2ms rectangular current withstand

A

400/600/1000

5

Operating duty

 

 

5.1

-4/10μs high current impulse withstand

kA

100

100

100

100

100

100

100

100

100

100

100

100

100

100

100

100

6

Housing insulation level

 

 

6.1

-Lightning impulse

kV

200

210

210

240

240

240

250

280

290

300

315

350

380

400

450

500

6.2

-Power frequency, wet 1 min

kV

100

110

110

140

140

140

160

170

180

190

200

220

240

250

280

320

7

Partial discharge

pC

<10

8

Creepage distance/rated voltage ratio

mm/kV

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

≥31

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