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OPTO F 3.0

The Opto F 3.0 device is a short-circuit indicator. It is designed, to detect, display and remotely indicate short-circuit currents in medium voltage distribution networks.

Short-Circuit Indicator

Product Features

  • Fibre optic cables for electrical isolation between indicator and current transformers
  • High-intensity LED indication
  • Single and double flash mode for operation in radial and ring networks
  • Remote indication via relay contact
  • Current transformer retrofit ability

The Opto F 3.0 device is a short-circuit indicator. It is designed, to detect, display and remotely indicate short-circuit currents in medium voltage distribution networks. The indicator unit can be used both in encapsulated and open- type medium voltage switchgear installations. Fibre optic cables (FOC) provide electrical isolation between the current transformers on cable/busbar and the display unit when transferring signals.

In the event of a short-circuit, the current transformers mounted on the conductors emit light signals via fibre optic cables to the evaluation unit in the housing where they are indicated as a short-circuit by phase-selectively operated red flashing LEDs.

After the first tripping incident (e. g. in radial systems) the LEDs begin a phase- selective flash rhythm of: flash / pause / flash.

A second tripping (e. g. ring operated network with ARC/RR) is indicated by flashing LEDs of the fault-affected phases in a flash-flash / pause / flash-flash rhythm.

 

Equipment set:

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

Product

Note Item Number

OPTO F 3.0 in plug-in housing

Item Number33-0513-001

OPTO F 3.0 in surface mount housing

Item Number33-0613-001


Technical Data

Technical Data

OPTO F 3.0

Short-circuit indicator

I>> Short-circuit trip current

400, 600, 800 or 1,000 A (adjustable, further trip current levels on request)

tI>> Response delay

40, 60, 80, 100, 200, 300, 500 ms (adjustable)

Accuracy

±15 % (determined by current transformer)

Indication

3 red LEDS for phase-selective short-circuit, flashing period 2 s, double flash sequence 0.3 s with flashing period of 3 s

Optional: external signal lamp

Remote signal

1 Relay contact

Relay contact

Potential-free permanent or momentary contact (adjustable)
Contact capacity:
380 V AC/5 A/1,250 VA max.
220 V DC/5 A/150 W max.

Reset

  • Manual reset

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

  • Voltage restoration or by applied external voltage supply ≥10 s (can be activated via DIP switch)

  • Remote reset

Remote reset/remote test

Separate inputs, potential-free NO contact, wiping time of NC contact ≥0.5 s

Power supply

Long-life lithium cell, active flashing time >1,000 h, lifetime ≥20 years
Auxiliary supply, integrated in the device:
12 – 110 V DC ±10 % or 24 – 60 V AC, 50 – 60 Hz, ±10 %
Optional accessories:
Transformer with cable for top-hat rail or screw mounting
(115 – 230 V AC/24 – 48 V AC)

Housing

Polycarbonate, IP40 (Plug-in housing), IP65 (Suface mount housing)

Temperature range

-30 to +70 °C

Accessories

External Signal Lamps

External Signal Lamp

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

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49-0702-005

Other

Fibre optic cable

Fibre optic cable: 3 m (standard length for short-circuit current transformers)

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49-0602-009
Cutting tool for fibre optic cables

Cutting tool for fibre optic cables

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49-0109-003
Transformer

  • Transformer with cable for top-hat rail mounting
  • (115–230 V AC/24–48 V AC)

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49-0921-002
Optical testing unit

  • Optical testing unit to excite the indicator
  • for connection to the FOC plug

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49-0109-002
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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Contact

Watch list