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SIGMA plus

This device is ready for retrofit: Change or replace old indicators with the Sigma plus WITHOUT REPLACING CURRENT TRANSFORMERS ALREADY EXISTING IN THE SWITCHGEAR!

Short-circuit and earth fault indicator

Product Features

  • Retrofit solution for old devices without replacing existing current transformers
  • Can be adjusted to all common Horstmann current transformers
  • Indication by high-intensity LEDs with a viewing angle of 180 degrees
  • Load-dependent self-adjustment or fixed setting
  • Single and double flash mode for operation in radial and ring networks

The Sigma plus device features all the functions provided by the Sigma and Sigma F+E devices thus capable of being used as a short-circuit indicator or as a combined short-circuit and earth fault indicator.
This device is ready for retrofit: Change or replace old indicators with the Sigma plus WITHOUT REPLACING CURRENT TRANSFORMERS ALREADY EXISTING IN THE SWITCHGEAR!
The Sigma plus features a selection switch which is used to adapt the device to all current transformers of the Alpha, Delta, Gamma and Sigma series.

Equipment set:

  • 1 Display unit (plug-in/surface mount housing)
  • 3 Short-circuit current transformer or 2 short-circuit current transformers + 1 summation current transformer

Product

Note Item Number

SIGMA plus in plug-in housing

Item Number37-3110-001

SIGMA plus in surface mount housing

Item Number37-3510-001

SIGMA plus AC/DC in plug-in housing

Item Number37-3120-001

SIGMA plus AC/DC in surface mount housing

Item Number37-3520-001


Technical Data

Technical Data

Sigma plus

Short-circuit indicator

Earth fault indicator

I>> Short-circuit trip current

(100), 200, 300, 400, 600, 800 or 1.000 A, fixed setting
Self-adjustment to load current (IL = load current): IL < 100 A ⇒ I>> = 400 A, IL > 100 A ⇒ I>> = 4 x IL

tI>> Response delay

40, 80, 200 or 300 ms

IE> Earth fault trip current

20, 40, 60, 80, 100, 120 or 160 A

tIE> Response delay

80 or 160 ms

Accuracy

±15 %

Indication

Bright LED displays:

  • Short-circuit: 3 red phase-selective LEDs (L1, L2, L3)
  • Short-circuit / earth fault: 3 red LEDs (L1, E, L3)

Reset

  • Manual reset
  • Automatic time reset: 2, 4, 8 or 24 h
  • Remote reset
  • Current restoration

Remote signal

2 Relay contacts

Remote contact

Potential-free permanent or momentary contact (1 s), adjustable
contact capacity:
230 V AC/1 A/62,5 VA max.
220 V DC/1 A/60 W max.

Power supply

Long-life lithium cell, shelf life ≥20 years, >1,000 h total flashing time

Housing

Polycarbonate, IP40 (plug-in housing), IP65 (surface mount housing)

Temperature range

-30 °C 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

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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

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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

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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

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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
Earth fault current transformers

  • for short-circuit indicator types SIGMA F+E, SIGMA plus
  • Summation current transformers for installation on cables
  • for conductor dia. 40 - 115 mm
  • Cable length 3 m

more...
49-6013-016
Earth fault current transformers

  • for short-circuit indicator types SIGMA F+E, SIGMA plus
  • Summation current transformers for SF6-insulated installations
  • for conductor dia. 280 x 50 mm, oval
  • Cable length 3 m

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49-6013-028
Earth fault current transformers

  • for short-circuit indicator types SIGMA F+E, SIGMA plus
  • Summation current transformers for air-insulated installations
  • for conductor dia. 350 x 50 mm, oval
  • Cable length 3 m

more...
49-6013-027

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)

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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

  • for retracting plug-in housings type Alpha, Opto, Earth  and Sigma

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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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