Bushings

Standard Range

This range of bushings has been used in the UK and overseas for many years. Standard bushings are a proven range and many thousands continue to operate to this day. The range is especially useful in non-standard transformers -especially where very heavy pollution levels exist. The range has enhanced insulation levels in excess of ISO 60137 requirements.

Designation - oil / air outdoors

Compliance Standards

BS EN ISO 60137

Available Designs
Bushings rated at 36kV and above are normally supplied filled with oil and ready for service.

For some voltages we are able to provide high current (HC) versions.

Insulators

Insulator is one-piece ceramic porcelain. Standard porcelain colour is Brown. Grey porcelain is also available - consult us for lead times

Metalwork

Conductors are electro-tin plated. Fixings and fasters are anti-corrosion plated.

Termination

Most bushings are supplied with screwed terminals. High current (HC) versions are supplied with plain terminals to enable termination via flag connectors.

Fixation

Bushings are supplied fitted with an aluminium flange with fixing holes drilled to accept transformer cover studs. The flange is fixed to the porcelain with galvanised finger clamps.

kV

A

BIL

AC

Creepage

Prot

mm/kV

CLASS

S0.6

0.6

850

35

16

57

48

95

IV

S1.1

1.1

850

35

27

108

48

98

IV

S3.6

3.6

850

55

30

133

57

37

IV

S3.6HC

3.6

3300

55

30

133

76

37

IV

S7.2

7.2

850

75

35

171

86

23

II

S7.2HC

7.2

3300

75

35

171

86

23

II

S12

12

630

95

40

241

116

20

II

S12 HC

12

2500

95

40

254

128

21

II

S15

15

850

120

68

470

113

31

IV

S24

24

630

150

70

432

200

18

I

S24 HC

24

3300

125

50

457

205

19

I

S36 HC

36

3300

200

110

620

260

17

I

S52

52

1600

260

120

838

280

16

I