Opto F 3.0
Short-circuit indicator
The OPTO-F 3.0 is a short-circuit indicator and is used to detect, display and remotely signal short-circuit currents in medium-voltage networks. The indicator can be used in both encapsulated and open medium-voltage systems. The potential separation between the measuring sensors on the cable/busbar and the display unit is ensured during signal transmission via fiber optic cables (FO).
Product features
- Potential isolation of the sensors via fiber optic cable
- Bright LED display
- Single and double flashing mode for beam and ring network
- Remote signal via relay contact
- Transducer can be retrofitted
Phase-selective short-circuit indicator
Test/ reset button
Setting options via DIP switch
Your added value
- Mounting on non-safe-to-touch cables
- Another error recognizable within the reset time
Surface-mounted housing
Technical data
Short-circuit indicator✅
| Opto F 3.0 | |
|---|---|
| Earth fault location method | Earth short circuit |
| I>> Response values Short-circuit current |
400, 600, 800, 1,000 A (adjustable on the phase current sensor) |
| tI>> Response delay | 40, 60, 80, 100, 200, 300, 500 ms (adjustable in the device) |
| Response tolerance | ±15 % (determined by encoder) |
| Display | Phase-selective short-circuit indicator: 3 red LEDs, flashing period 2 s, Double flashing sequence 0.3 s with flashing period 3 s Optional: external indicator light |
| Remote signaling / communication | 1 relay contact (NO contact, special version with NC contact) |
| Telecommunication contact | Potential-free continuous or wiping contact Contact rating: 380 V AC / 5 A / 1250 VA max.; 220 V DC / 5 A / 150 W max. |
| Reset |
|
| Supply | |
| Converter power supply | ✅ |
| External auxiliary voltage | Optional: 12 – 110 V DC ±10 % or 24 – 60 V AC, 50 – 60 Hz, ±10 % |
| Internal power supply | Long-life lithium cell, active flashing time >1,000 h, service life ≥20 years |
| Optional accessories | Transformer with cable for DIN 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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