Opto R+D 3.0
Short-circuit and earth fault indicator
The Opto F+E 3.0 is a combined short-circuit and earth fault indicator and is used to detect, display and remotely signal short-circuit currents in medium-voltage networks. Due to the measuring principle, the earth fault indicator is suitable for networks with low-impedance or rigidly earthed neutral point treatment as well as for operation in a radial or open ring network.
The indicator can be used in both encapsulated and open medium-voltage systems. The potential separation between the current sensors on the cable / busbar and the display unit is ensured during signal transmission via fiber optic cables (FO). The current sensors have built-in threshold value detection. When the set response value is reached or exceeded, light pulses are emitted and sent from the sensor to the opto via an optical fiber. The short circuit is made visible in the display unit by red phase-selective flashing LEDs.
With a single excitation (e.g. beam network), the LEDs flash phase-selectively in the rhythm: flash – pause – flash.
With a second excitation (e.g. ring network with AWE / KU), the LEDs flash phase-selectively in the rhythm: double flash – pause – double flash.
Product features
- Potential isolation of the phase current sensors via fiber optic cable
- Bright LED display
- Single and double flashing mode for beam and ring network
- Remote signal via relay contact
- Phase current encoder can be retrofitted
Phase-selective short-circuit indicator
Separate earth fault indicator
Setting options via DIP switch
Your added value
- Mounting on non-safe-to-touch cables
- Another error recognizable within the reset time
Fiber optic connections (opto-coupler in the device)
Technical data
| Opto R+D 3.0 | |
|---|---|
| Short-circuit indicator | ✅ |
| Earth fault indicator | ✅ |
| 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) |
| IE> Response values Earth fault current | 10, 20, 40, 80 A or 40, 80, 120, 160 A (adjustable on the summation current sensor) |
| tIE> Response delay | 60, 100, 200 ms (adjustable in the device) |
| Response tolerance | ±15 % (determined by current transmitter) |
| Display | Phase-selective short-circuit indicator: 3 red LEDs, earth fault indicator: 1 yellow LED, flashing period 2 s, Double flashing sequence 0.3 s with flashing period 3 s Optional: external indicator light |
| Remote signaling / communication | 2 relay contacts |
| 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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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.
Equipment set
- 1 Opto R+D 3.0 display unit
- 3 phase current sensors
- 1 summation current sensor
- 4 Fiber optic cable
Accessories
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Other short-circuit and earth fault indicators
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ComPass B
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ComPass B 2.0
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ComPass Bs 2.0
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