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SIGMA F+E 3

The SIGMA F+E 3 device is a combined short-circuit and earth fault indicator. It is designed to detect, display and remotely indicate short-circuit and earth faults in medium voltage distribution networks.

Short-Circuit and Earth Fault Indicator

Product Features

  • Short-circuit and earth fault detection from only 3 single-phase current sensors
  • Phase-selective fault indication and Fault signalling
  • Load-dependent self-adjustment of fixed values
  • Single- and double flashing mode for ring and radial operated distribution networks

The SIGMA F+E 3 device is a combined short-circuit and earth fault indicator. It is designed to detect, display and remotely indicate short-circuit and earth faults in medium voltage distribution networks.

Just three single-phase current sensors are used for sensing short-circuits and earth faults allowing phase-selective detection, indication and remote signalling (or group signalling) of faults.

The red LED I>> indicates that a short-circuit has occurred whereas the yellow LED IE> signals an earth fault. The L1, L2, and L3 indication fields display the fault-affected phase.

 

Equipment set:

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

Product

Note Item Number

Display unit

Item Number37-5113-001


Technical Data

Technical Data

SIGMA F+E 3

Short-circuit indicator

Earth fault indicator

I>> Short-circuit trip current

200, 300, 400, 600, 800, 1,000 or 2,000 A, fixed setting

Self-adjustment 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 2,000 A

tI>> Response delay

40, 80, 200, 300 ms

IE> Earth fault trip current

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

tIE> Response delay

60, 80, 200, 300 ms

Accuracy

5 % (0 – 630 A)

10 % (>630 A)

Indication

LED-display fields

3 red LEDs: phase-selective L1, L2, L3

1 red LED: short-circuit I>>

1 yellow LED: earth fault IE>

Reset

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

Remote signal

3 Relay contacts

Relay contact

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, lifetime ≥20 years, total flashing time >1,000 h

optional: 12-60 V DC

Housing

Polycarbonate, IP40 (Plug-in housing)

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

External Signal Lamps

External Signal Lamp

  • with 3 LEDs (red)
  • 5 m connection cable, for permanent contact, with battery

more...
49-0702-005
External Signal Lamp

  • “bicolour“ with 3 LEDs (red/green)
  • 3 m connection cable, with battery

more...
49-0706-001
External Signal Lamp

  • “bicolour“ for connection of fibre optic cable, 1 LED (red/green)
  • 2 m connection cable, with battery

more...
49-0704-001

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

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

more...
040804-0010

Dimensioned Drawings

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Contact

Watch list