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SIGMA 2.0

The Sigma 2.0 is a phase-selective short-circuit indicator. It is designed to detect, display and remotely indicate short-circuits in medium voltage distribution networks. The current is measured via three single-phase current sensors. By using the new sensors retrofit to more advanced indicator series is possible at any time – without changing the sensors.

Short-circuit indicator

Product Features

  • Short-circuit indicator for all medium voltage networks
  • Phase-selective fault indication and fault signalling
  • Retrofit ready for short-circuit and earth fault indicators with monitoring/control and fault direction functions
  • Trip current values: load-dependent self-adjustment or fixed values
  • Single and double flash mode for operation in radial and ring networks
  • With auxiliary supply and capacitor storage available in AC/DC version

The Sigma 2.0 is a phase-selective short-circuit indicator. It is designed to detect, display and remotely indicate short-circuits in medium voltage distribution networks.
The current is measured via three single-phase current sensors. By using the new sensors retrofit to more advanced indicator series is possible at any time – without changing the sensors.
There are two response criteria for short-circuit detection, fixed response value with response delay or auto-adjustment based on load current.
If the current for the selected response criterion – fixed value or self-adjustment – is exceeded, the fault-affected phase will be indicated by a bright flashing LED and remote contact will be activated. A double flashing LED signals a second fault that has occurred within the reset time, e. g. by an automatic reclose attempt and the remote contact will be reactivated.
The device provides automatic reset options, either after expiry of a pre-set time, by closing an external input contact or manually by pressing the “Test“ button. In addition, a function test can be carried out either by the “Test” button or an external input contact.
For testing and commissioning purposes, the trip current values can be reduced to 10 A without changing the DIP switch settings.
The DIP switches on the front face of the device are used to adjust the values for trip current, response delay and time reset, as well as the required remote signal contact type (permanent or momentary contact).
The Sigma 2.0 AC/DC version can be connected to auxiliary supply. If the auxiliary power drops out in the event of a failure, the LED indicator can operate using a back-up capacitor for up to 8 hours.

Equipment set:

1 Display unit (plug-in/surface mount housing)
3 Short-circuit current transformers


Product

Note Item Number

SIGMA 2.0

Item Number37-1111-101

SIGMA 2.0 AC/DC

Item Number37-1121-101


Technical Data

Tecnical Data

SIGMA 2.0

Short-circuit indicator

I>> Short-circuit trip current

200, 300, 400, 600, 800, 1.000 oder 2.000 A, fixed settings
Auto-setting as a function of the operating current (IL):

IL < 100 A ⇒ I>> = 400 A, IL > 100 A ⇒ I>> = 4 x IL, I>> max = 2.000 A

tI>> Response delay

40 ms or 80 ms

Accuracy

±15 %

Indication

3 rote LEDs: 3 x Kurzschluss (L1, L2, L3)

Reset

  • Manual reset

  • Automatic time reset: 1, 2, 4, 8 h, adjustable

  • Remote reset

Remote signal

1 Relay contact

Relay contact

Potential-free permanent and 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, lifetime ≥20 years, >1,000 h total flashing time

  • Optional: external power supply, incorporated in the device: 12 – 60 V DC

Housing

Polycarbonate, IP40

Temperature range

-30 to +70 °C

Accessories

Current Sensors

Short-circuit Current Sensor

  • Split-core cable-type current sensor
  • for retrofit on insulated cables
  • for short-circuit indicator types: Sigma and ComPass
  • for conductor 15 – 55 mm Ø
  • cable length 3 m

more...
49-6024-001
Short-circuit Current Sensor

  • Split-core cable-type current sensor
  • for retrofit on insulated cables
  • for short-circuit indicator types: Sigma and ComPass
  • for conductor 15 – 65 mm Ø
  • cable length 3 m

more...
49-6024-010
Single-phase Current Sensor

  • for new installation on bushings
  • for switchgear manufacturer
    • ABB type SafeLink, SafePlus
    • Schneider Electric type FBX
  • for short-circuit indicator type Sigma and ComPass

Riquired order data:

  • for 1 set you need 3 single-phase current sensors

more...
49-6025-000
Single-phase Current Sensor

  • for new installation on bushings
  • for switchgear manufacturer
    • Driescher type MINEX, MINEX C, G.I.S.E.L.A.
  • for short-circuit indicator type Sigma and ComPass

Required order data:

  • For a set you need 3 single-phase current sensors.
  • Without retaining plates. Please contact the manufacturer for retaining plates.

more...
49-6025-601*
Single-phase Current Sensor

  • for new installation on bushings
  • for switchgear manufacturer
    • Lucy Electric type AegisPlus
  • for short-circuit indicator type SIGMA and ComPass

more...
49-6025-601
Single-phase Current Sensor

  • for new installation on bushings
  • for switchgear manufacturer
    • ORMAZABAL type GA, GAE, GE
  • for short-circuit indicator type Sigma and ComPass

Required order data:

For a set you need 3 single-phase current sensors.

more...
49-6025-311
Single-phase current sensor

  • for new installation on bushings
  • for switchgear manufacturer
    • Schneider Electric type FBX
  • for short-circuit indicator type Sigma and ComPass

Required order data:

  • For a set you need 3 single-phase current sensors.
  • Without retaining plates. Please contact the manufacturer for retaining plates

more...
49-6025-602*
Single-phase current sensor

  • for new installation on bushings
  • incl. 3 Sensors, module carrier and rivets, completely mounted
  • for switchgear manufacturer
    • Siemens type 8DJH
  • for short-circuit indicator type Sigma and ComPass

Required order data:

For a module transformer you need:

  • 2 single-phase current sensor 49-6025-611

  • 1 single-phase current sensor 49-6025-612

more...
49-6025-61x

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

more...
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

more...
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

more...
040804-0010

Dimensioned Drawings

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