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Current Transformers

Current Transformers
Product Code : PR
Product Description

Product Description:

PR Series current transformer 
Protective current transformers are required to operate over a range of current many times the circuit rating and is frequently subjected to conditions greatly exceeding those which it would be subjected to as a measuring current transformer. When a current transformer is used to energize a protective relay, it must maintain its characteristic ratio up to some multiple of its rated current. This multiple, may be 5, 10, 20 or some even higher value and is know as the "Accuracy Limit Factor"(ALF). Therefore, the selection of Protective Current Transformers in relation to accuracy class and ALF require a close examination of relay characteristic and circuit conditions which includes the relay burden and the pilot wire lead burden.

Technique parameter:

Outline Drawing:

Model

Class

10

10P10

10P15

RATIO

ID

OD

VA

5

7.5

10

15

20

30

5

7.5

10

15

20

7.5

10

15

20

PR1

100/5

30

95

mm

50

60

75

100

130

-

85

100

-

-

-

-

-

-

-

120/5

30

95

50

60

70

95

120

-

80

105

-

-

-

-

-

-

-

150/5

30

95

40

50

60

80

110

-

65

90

110

-

-

-

-

-

-

200/5

28

95

40

40

40

55

65

-

60

6

70

-

-

-

-

-

-

PR2

150/5

40

100

mm

50

55

65

85

100

-

75

100

110

120

-

-

-

-

-

200/5

40

100

40

40

50

60

70

-

55

70

85

110

-

-

-

-

-

250/5

40

95

40

40

50

60

70

-

50

70

85

110

-

75

95

-

-

300/5

40

95

35

40

40

60

65

85

50

60

70

95

-

70

85

105

-

PR3

200/5

45

95

mm

40

55

60

80

100

115

75

95

110

-

-

-

-

-

-

250/5

45

95

40

50

60

70

85

110

60

75

90

115

-

85

110

-

-

300/5

45

95

35

40

40

60

70

95

50

65

80

100

-

70

90

-

-

400/5

45

95

35

40

40

60

60

85

50

55

65

85

-

65

80

95

-

PR4

400/5

58

100

mm

35

40

40

60

70

90

60

65

80

100

-

75

95

110

-

550/5

58

100

35

40

40

60

60

80

50

60

70

85

110

70

80

95

-

600/5

57

100

35

35

40

50

60

70

50

50

60

80

90

60

75

85

110

800/5

55

104

35

35

35

40

50

60

40

50

50

60

80

55

65

75

90

PR5

600/5

70

114

mm

35

35

40

50

50

70

50

55

60

80

95

70

80

90

110

800/5

70

114

35

35

35

40

40

55

40

40

50

60

70

50

60

70

85

1000/5

68

116

35

35

35

35

40

50

35

40

50

55

65

50

55

65

80

1200/5

67

117

35

35

35

35

35

40

35

40

40

50

60

40

50

55

65

PR6

800/5

85

125

mm

35

35

35

40

50

60

40

50

55

65

80

60

65

75

95

1000/5

83

127

35

35

40

40

40

60

40

40

50

60

75

50

60

70

85

1200/5

83

128

35

35

35

35

40

40

35

35

40

45

60

40

50

60

65

1600/5

82

130

35

35

35

35

35

40

35

35

35

40

50

40

50

50

65

PR7

1200/5

110

152

mm

35

35

35

35

40

50

40

40

50

45

65

50

60

65

80

1600/5

110

155

35

35

35

35

35

40

35

35

35

40

50

35

50

50

60

2000/5

108

158

30

30

30

30

30

30

35

35

35

40

40

35

40

50

50

2500/5

108

162

30

30

30

30

30

30

35

35

35

35

40

35

35

40

50

PR8

1600/5

120

165

mm

30

30

30

35

35

40

35

40

40

45

60

50

50

55

65

2000/5

120

165

30

30

30

35

35

40

35

35

40

40

50

40

40

50

55

2500/5

118

168

30

30

30

35

35

35

35

35

35

40

40

35

40

40

50

3000/5

116

170

30

30

30

35

35

35

35

35

35

40

40

35

40

40

50

PR9

2000/5

130

175

mm

30

30

30

35

35

40

35

35

40

40

50

40

50

50

60

2500/5

130

175

30

30

30

35

35

40

35

35

35

40

40

35

40

40

50

3000/5

128

178

30

30

30

35

35

35

35

35

35

40

40

35

40

40

50

3500/5

126

180

30

30

30

35

35

35

35

35

35

40

40

35

35

40

40

PR10

2500/5

140

185

mm

35

35

35

35

40

40

35

35

40

40

50

35

40

50

60

3000/5

140

185

35

35

35

35

35

40

35

35

35

40

40

35

40

40

50

3500/5

138

188

35

35

35

35

35

35

35

35

35

40

40

35

35

40

40

4000/5

136

190

35

35

35

35

35

35

35

35

35

40

40

35

35

40

40