Lodestar CL2
Lodestar CL2 was designed especially for medium voltage utility overhead lines. It ensures 99% accuracy of detection of load currents from 2A. CL2 is provided with current and voltage unique measurement algorithms and outstanding fault detection capabilities. Three devices Lodestar CL2 located on different phases of the line perform synchronous vector measurements.
Lodestar CL2 can be integrated into an existing SCADA or smart grid system and can operate in various communication environments. Pole-mounted communication equipment (Smartbox or Ligthbox) receives and manages all data and acts as a reciever for communcation environment.
Lodestar CL2 benefits:
• Can be used in networks with any types of neutral grounding;
• Detects and indicates all types of faults: phase to phase, phase to ground, multiple phase faults, permanent and transient faults;
• Vector calculations — synchronous measurement of currents – allow Lodestar to deal with phases as well as magnitudes;
• Minimum fault sensing PtG 2A;
• Flexible configuration — a rich set of configurable parameters enables adaptation to a variety of customer needs.
Technical specifications
| PARAMETER | VALUE |
| Operating parameters | |
| Operating voltage | 6-35 kV 36-70 kV (option with Faraday cage) |
| Operating current | 0-1000 A |
| Operating frequency | 50/60 Hz |
| Conductor size | 5-40 mm / 19,6-1256 mm² |
| Fault sensing | |
| Type of faults | PtP faults PtG faults Transient faults |
| Detection of earth fault direction | Forward & Backward (Lodestar CL0.5)* |
| Absolute threshold | 20 A ... 1000 A |
| Differential thresholds | 20 ? … 500 A / 50 % ... 500 % |
| Minimum fault sensing (PtG) Zero sequence thresholds/3I0 |
0.5 – 100 A (Lodestar CL0.5) 2 – 100 A (Lodestar CL2) 4 – 100 A (Lodestar CL4) |
| Response time | 20 ms |
| Fault notification | |
| Visual | Ultra bright LED (white) ? 100 m – day time @sunny weather ? 500 m – night time |
| Resistance | |
| Current withstand | 25 kA /500 ms |
| In-rush resistance | 0-200 ms /step 20 ms |
| Communication | |
| Short-range communication technology | Built-in BLE module, 50 m |
| On-site configuration and control | Mobile App Lodestar (Android, iOS) |
| Long-distance communication | Pole-mounted communication box (GSM) |
| Fault management software | KOMORSAN |
| Reset | |
| By timer | 1 hour ... 8 days (configurable) |
| Remote | Lodestar App, KOMORSAN |
| Reenergized line | By voltage |
| Manual | Magnet |
| Physical characteristics | |
| Dimensions | 140 x 114 x 158 mm |
| Weight | 0.55 kg |
| Housing | UV resistant polycarbonate |
| Ambient conditions | |
| Temperature range | -40 ... +75 °C |
| IP protection | IP68 |
| Salty fog | Resistant (IEC 60068-2-11) |
| Installation | |
| Installation tools | Dielectric rod Lodestar hotstick tool adaptor |
| Installation method | Live line |
| Battery | |
| Battery type and capacity | Lithium, 19 Ah, 3.6 V |
| Battery life time | >1000 h, >7 years |
| Low battery alarm | At 20 % of remaining battery load - visual by LED blinking (yellow color) - KOMORSAN notification |
| Other | |
| Applicable standards | ANSI / IEEE 495 |
| Internal memory | 20 000 events |
| Measured telemetry parameters | Currents (10-15% accuracy) Voltage absence/presence |
*Only for isolated neutral grounding. Min 5 km behind FPIs is required.
