NAL switch disconnector and NALF fuse switch disconnector-fuse composite apparatus

Rated voltage

KV

12(IEC)

17.5 (IEC)

12(GB)

24(GB)

36 (IEC)

Rated frequency

Hz

50/60

50/60

50

50

50

Rated impulse withstand voltage

Between phases and to earth

KV

75

95

75

125

170

Between breaks

KV

85

110

85

145

195

Rated power frequency withstand voltage 50Hz,1min

Between phases and to earth

KV

42

45

42

65

70

Between breaks

KV

42

60

48

79

80

Rated short circuit making current（peak）

KA

67

50

50

50

50

Rated peak withstand current

KA

82

82

50

50

50

Short time withstand current

KA

25/2s

25/2s

20/4s

20/2s

20/2s

31.5/2s

Rated active load switch breaking current

A

630

1250

630

1250

630

1250

630

630

Rated closed-loop breaking current

A

630

1250

630

1250

630

1250

630

630

Rated cable charging breaking current

A

10

10

10

16

21

Main circuit resistance

μ Ω

≤105

≤105

≤105

≤105

≤105

Phase distance (center distance)

mm

150/170/210
210

170/210

170/210

235/275

360

Rated current of fuse switch disconnector

A

100

100

100

100

100

Maximum fuse current of the fuse switch disconnector

A

125

125

125

125

50

Main circuit resistance the fuse switch disconnector

μ Ω

≤250

≤250

≤250

≤250

≤250

Rated short circuit breaking current of fuse switch disconnector

KA

31.5

31.5

31.5

31.5

31.5

Rated short circuit making current of fuse switch disconnector (peak)

A

80

80

80

80

80

Rated transfer current of fuse switch disconnector

A

1200

1200

1200

800

200

Maximum operating torque

Switch disconnector, with K type single spring operating mechanism

close

Nm

≤120

≤120

≤120

≤120

≤120

open

Nm

≤120

≤120

≤120

≤120

≤120

Fuse switch disconnector, with A type double springs operating and energy-stored mechanism

Energy-stored and close

Nm

≤120

≤120

≤120

≤120

≤120

open

Nm

≤3

≤3

≤3

≤3

≤3

Shaft corner

degree

120

120

120

120

120

Close speed

m/s

≥6

≥6

≥6

≥6

≥6

Open speed

m/s

4.5～6

4.5～6

4.5～6

4.5～6

4.5～6

Three phase close synchronism

m/s

≤3

≤3

≤3

≤3

≤3

Mechanical life

time

≥2000

≥2000

≥2000

≥2000

≥2000

Remark:(1) NALF36 can only equipped with A type double springs operating and energy-stored mechanism. (2) According to the actual requirements, different operation modes like manual, manual with shunt tripping, electrical and electrical shunt tripping are available.

E Type Switch Disconnector with Earthing Switch

Rated voltage

KV

12(IEC)

17.5(IEC), 12(GB)

24(GB)

40.5(GB)

Rated short circuit making current（peak）

KA

40

40

40

40

Rated peak withstand current

KA

40

40

40

40

2S short time withstand current

KA

16

16

16

16

Closing operating torque

Nm

≤120

≤120

≤120

­≤120

Opening operating torque

Nm

≤120

≤120

≤120

≤120

Mechanical life

time

≥2000

≥2000

≥2000

≥2000

Phase distance (center distance)

mm

150/170/210
210

170/210

275

360