SHUNTS

Shunts are available for current ratings from 5 to 10,000 amps and milli volt drops of 75 milli volts. The shunts confirm to ISI standards IS 1248.

Shunts consist of Manganin rods soldered or silver brazed to brass / copper end blocks. The shunts are artificially aged after manufacture and then tested on full load.

ACCURACY: Class 1.

OVERLOAD :
Shunts are capable of withstanding temperatures upto 120°C without any permanent alterations in physical or electrical properties. Overloads and faults which result in temperatures of this magnitude can be safely handled.

All 75 milli volt drop shunts of class 1, withstand the following overload requirements:

  • 2 x rated current for 3 minutes
  • 4 x rated current for 30 seconds.
  • 10 x rated current for 5 seconds.

TEMPERATURE CO-EFFICIENT:
0.002% per degree centigrate, above ambient temperature in still air, with free ventilation. Temperature not-exceeding 120°C at the centre and 90°C at the ends.

RATES :

(DIMENSIONS IN MILLIMETERS)




"I" TYPE (5 TO 150 amps)

Rating

a2

b1

c1

c

5-30A

28

20

8

88

31-150A

33

20

8

100







"L" TYPE (151 TO 3000 amps)

Rating

a2

b1

b2

b3

c1

c2

c

h

151-300 amp

55

30

15

-

10

10

125

30

400-750 amp

55

40

20

-

10

10

125

30

800- 1000 amp

65

60

30

-

10

10

135

30

1000- 1500 amp

65

90

21

48

10

10

135

30

1500-3000 amp

65

120

30

60

10

10

135

30

 

Range
(amp)

Rate
(Rs/unit)

Range
(amp)

Rate
(Rs/unit)

Range
(amp)

Rate
(Rs/unit)

Range
(amp)

Rate
(Rs/unit)

5A

115/-

50A

125/-

250A

395/-

1200A

1400/-

10A

115/-

60A

150/-

300A

435/-

1500A

1545/-

15A

115/-

75A

150/-

400A

520/-

2000A

2080/-

20A

125/-

100A

195/-

500A

610/-

2500A

2400/-

25A

125/-

125A

225/-

600A

675/-

3000A

2680/-

30A

125/-

150A

235/-

750A

760/-

 

 

40A

125/-

200A

370/-

1000A

1060/-