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ALPHA M

The ALPHA M device is a short-circuit indicator. It is designed to detect, display and remotely indicate short-circuit faults in medium voltage distribution networks.

Short-Circuit Indicator

Product Features

  • Adjustable trip currents
  • Flag-type indication (black/red)
  • Remote signal

The ALPHA M device is a short-circuit indicator. It is designed to detect, display and remotely indicate short-circuit faults in medium voltage distribution networks.

The indication is tripped by a short-circuit current and remains active until the device is reset.

 

Equipment set :

  • 1 Display unit
  • 3 Short-circuit current transformers

Product

Note Item Number

Display unit

Item Number30-1815-001


Technical Data

Technical Data

ALPHA M

 

Short-circuit indicator

I>> Short-circuit trip current

400, 600, 800 or 1,000 A, adjustable

tI>> Response delay

100 ms, no tripping at <20 ms

Accuracy

±15 %

Indication

3 Display elements (black/red), bi-stable type, for L1, L2, L3

Remote signal

1 Relay contact

Relay contact

Potential-free permanent and momentary contact (>100 ms), adjustable
Contact capacity:
230 V AC/1 A/62.5 VA max.
220 V DC/1 A/60 W max.

Reset

Manual reset via turning knob

Housing

Polycarbonate, IP40 (plug-in housing)

Temperature range

-30 to +70 °C

Accessories

Current transformers

Short-circuit current transformers for installation on insulated cables

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • For conductor dia. 15 - 52 mm
  • Cable length 3 m

more...
49-6011-040
Short circuit current transformers for installation on insulated cables

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • For conductor dia. 15 – 52 mm
  • Cable length 6 m

more...
49-6011-043
Short-circuit current transformers for installation over bushings

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Ormazabal GA,GAE, GE
  • Dimensions: 96 x 96 mm
  • Cable length 1,2 m

more...
49-6010-011
Short-circuit current transformers for installation over bushings

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Schneider Electric RM6
  • Dimensions: 80 mm Ø
  • Cable length 1,1 m

more...
49-6010-044
Short-circuit current transformers for installation over bushings

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Schneider Electric FBA, GLA, GMA
  • Dimensions: 92 mm Ø
  • Cable length 1,26 m

more...
49-6010-030
Short-circuit current transformers for installation over bushings

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Siemens 8DJ, 8DH, SIMOSEC
  • Dimensions: 95 mm Ø
  • Cable length 0,8 m

more...
49-6010-052
Short-circuit current transformers for installation over bushings

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Siemens 8DJH
  • module transformer
  • Cable length 1,3 m

more...
49-6010-060
Short-circuit current transformers for installation on pole plates

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer ABB SafeRing, RGC, Safeplus
  • Ccable-type CT for pole plate
  • Dimensions: 23 x 3 mm
  • Cable length 3 m

more...
49-6012-009
Short-circuit current transformers for installation on pole plates

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Driescher MINEX, G.I.S.E.L.A.
  • Cable-type CT for pole plate
  • Dimensions: 3-pole plate
  • Cable length 1,5 m

more...
49-6012-007
Short-circuit current transformers for installation on pole plates

  • for short-circuit indicator types ALPHA, SIGMA, SIGMA F+E, SIGMA plus
  • for switchgear manufacturer Schneider Electric FBX
  • Cable-type CTs for pole plate
  • Dimensions: 3- pole plate
  • Cable length 1,7 m

more...
49-6012-005
Short-circuit current transformers for installation on pole plates

  • 1 set consisting of 3 short-circuit current transformers
  • for switchgear manufacturer ABB SafeRing, RGC, Safeplus
  • Cable-type CTs for pole plate
  • Dimensions: 23 x 3 mm
  • Cable length 0,89/0,99/1,09 m

more...
49-6012-015
Short-circuit current transformers for installation over bushings

  • 1 set consisting of 3 short-circuit current transformers
  • for switchgear manufacturer EATON/Holec SVS
  • Dimensions: 44 mm
  • Cable length 1,22/1,06/1,06 m

more...
49-6010-032
Short-circuit current transformers for installation over bushings

  • 1 set consisting of 3 short-circuit current transformers
  • for switchgear manufacturer EATON/Holec XIRIA
  • Dimensions: 70 mm
  • Cable length 1,47/1,36/1,25 m

more...
49-6010-048

Wall-mounted Housings

Wall-mounted housing including earthing bar

  • 290 x 74 x 200 mm (W x H x D)

more...
V49-9001-007-001
Wall-mounted housing including earthing bar

  • 125 x 175 x 125 mm (W x H x D)

more...
V49-9001-004-001
Wall-mounted housing

  • 125 x 75 x 125 mm (W x H x D)

  • Bottom cable entry

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49-9001-001
Wall-mounted housing

  • 125 x 75 x 125 mm (W x H x D)

  • Rear cable entry

more...
49-9001-002

Other

Disassembly clip

Disassembly clip for retracting plug-in housings

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040401-0008
Spring clip

Spring clip suitable for 2 mm front plate thickness (standard)

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040804-0009
Spring clip

Spring clip suitable for 3 mm front plate thickness

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040804-0010

Dimensioned Drawings

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Contact

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