Three-phase short-circuiting device for conductors of various shapes, provided with universal clamps

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SKU: Msp - CCU - 3xSf/lf - Sp/lp - S/P/p , Msp - CAU - 3xSf/lf - Sp/lp - S/P/p , Msp - CARU - 3xSf/lf - Sp/lp - S/P/p
Category:

Intended use: earthing of conductors / bars of various forms in transformer stations.

Application: from the ground, by the application of the clamp on the conductor, followed by the tightening of the clamp actuator screw.

Classic / automatic phase clamps must be handled using an insulating stick according to the installation, provided with ‘’RO bayonet’’ coupling system.

Constructive shapes:  three-phase.

Constructive types of phase clamps:

  • Classic Universal Clamp( CCU)
  • Universal Automatic Clamp (CAU)
  • Universal Automatic Fast Clamp (CARU)

Three-phase short-circuiting device includes the following components:

  • Phase clamp – 3 pieces
  • Phase cable – 3 pieces
  • Earthing cable – 1 piece
  • Manual earthing clamp– 1 piece

Packing: waterproof bag.

Other equipment to be used in conjunction:

  • connecting insulating stick type PMU 20-1 B/ba / PMU 110-2 B/ba / PMU 220-2-B/ba / PMU 400-3B/ba

General technical characteristics of short-circuiting devices with universal clamp types CCU, CAU and CARU

Earthing Sp cable cross-section (mm2)

16

25

35

50

70

95

120

Nominal short-circuit current for t = 1s Isc (kA)

4

6,25

8,75

12,5

17,5

23,75

30

Shock (peak) nominal current for t = 0,02 s Isd (kA)

10

15,63

21,9

31,25

43,75

59,38

75

Test short-circuit current for t = 1s (kA)

4,6

7,2

10,06

14,38

20,13

27,31

34,5

Test shock (peak) current for t = 0,02 s (kA)

11,5

17,97

25,16

35,94

50,31

68,3

86,25

Power factor (according to SR EN 61230)

2,5

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Phase clamp type Classic universal clamp (CCU) Universal automatic clamp (CAU)

Universal automatic fast clamp(CARU)

Length of phase cables – three-phase short-circuiting device lf (m)

Length of the earthing cable – single-phase / three-phase short-circuiting device lp (m)

max. 8.5

max. 8.5

max. 8.5

Thickness of the flat bar where the phase clamp g can be mounted g (mm)

max. 40

max. 37

max. 40

Diameter of the sphere-type Sf coupling part (mm)

30

30

30

Diameter of the conductor where the phase clamp can be applied øD (mm)

9 ÷ 32

9 ÷ 32

9 ÷ 32

Three-phase short-circuiting device includes the following components:

  • Phase clamp – 3 pieces
  • Phase cable – 3 pieces
  • Earthing cable – 1 piece
  • Manual earthing clamp– 1 piece

Other equipment to be used in conjunction:

  • connecting insulating stick type PMU 20-1 B/ba / PMU 110-2 B/ba / PMU 220-2-B/ba / PMU 400-3B/ba