Opto F 3.0
Short-circuit indicator
The Opto F 3.0 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 in all medium voltage switchgear installations. Fibre optic cables provide electrical isolation between the current transformers, mounted on cable/busbar, and the display unit when transferring signals.
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 ready
Phase-selective short-circuit indicator
Test/ reset button
Setting options via DIP switch
Your added value
- Installation on bare cables and busbars/copper conductors
- New fault detection within reset time
- Also available as a plug-in housing and surface mount housing
Surface mount housing
Technical data
| Opto F 3.0 | |
|---|---|
| Short-circuit indicator | ✅ |
| Earth fault detection method | Earth short-circuit |
| I>> Short-circuit trip current | 400, 600, 800, 1,000 A (adjustable at the CT)) |
| tI>> Response delay | 40, 60, 80, 100, 200, 300, 500 ms (adjustable at the display unit)) |
| Accuracy | ±15 % (determined by current transformer) |
| Indication | Phase-selective short-circuit: 3 red LEDs, flashing period 2 s,
double flashing sequence 0.3 s with flashing period 3 s Optional: external signal lamp |
| Remote signal / communication | 1 relay contact |
| Remote contact | Potential-free permanent or momentary contact Contact capacity: 380 V AC / 5 A / 1250 VA max.; 220 V DC / 5 A / 150 W max. |
| Reset |
|
| Power supply | |
| Internal power supply | Long-life lithium cell, active flashing time >1,000 h, shelf life ≥20 years |
| External auxiliary supply | Optional: 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 (built-in housing), IP65 (surface-mounted housing) |
| Temperature range | -30 °C to +70 °C |
All important documents for the device
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Matching articles
PERFECT MATCH
Here you will find the matching equipment set and accessories for this item. All components are technically matched to each other and guarantee optimum functionality. For customer-specific requirements and individual offers, please contact our sales department.
Other short-circuit and earth fault indicators
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ComPass B
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- Detection of earth faults and short circuits for all distribution networks
- Remote signaling via RS485 / Modbus interface
ComPass B 2.0
- Highly accurate monitoring
- Detection of earth faults and short circuits for all distribution networks
- Directional fault indication
ComPass Bs 2.0
- Fault direction indicator with monitoring
- Detection of earth faults and short circuits for all distribution networks
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