Back to: Overhead line fault indicators (6-70kV)

Lodestar CL4B

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 CL0.5B)*
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 CL0.5B) 2 – 100 A (Lodestar CL2B) 4 – 100 A (Lodestar CL4B)
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.

Lodestar CL4B was designed for fault detection with minimum load current 4A. This is a cost-effective and reliable solution for fixing an emergency process. Lodestar CL4B supports a range of communication options, including 3G or 4G LTE communications for a high speed data transfer. Lodestar CL4B devices operate independently of each other, transmitting information about the processes in each phase.

Lodestar CL4B benefits:

• Minimum fault sensing 4A;
• Identifies temporary and permanent faults;
• Registering and storing fault information such as timestamp, event type and measured values;
• Battery status control and indication.