Fault indicators

    LODESTAR

    Nominal voltage6 kV to 70 kV
    SensitivityShows faults from 0.5 A
    Fault indicationBright LED and GPRS communication
    Choose file

    Function

    Lodestar is an overhead line fault indicator conductor mounted helping the linemen to determine the origin of faults on the line. Powerful white and red LEDs allow them to locate faulty sections in bright daylight. Thanks to Remote control, users can access logs of events on the line, instant current values and settings of device. Lodestar can be installed live-line with hot-stick.

    Operation principle

    Streamer’s Lodestar Fault Indicator senses the current on the phase where it is installed. Sensing is triggered when it detects a faulty current, above the current/time threshold curve, passing in the line conductors.

    Streamer’s Lodestar will indicate the fault by lighting a bright LED and by sending the information by GPRS to a server or a web based platform.

    Networks

    Lodestar is designed for the following networks:

  • 6 to 70kV
  • 1, 3 or 4 wires
  • bare or covered conductors up to 40mm external diameter
  • symmetric or asymmetric installations
  • steel, concrete or wooden poles
  • insulated, compensated or effectively grounded neutrals
  • Installation

    Lodestar is designed to be installed on wires or covered conductors up to 40 mm external diameters (equivalent to 240 mm2 with insulation thickness of 7 mm).

    One indicator per phase is required.

    Thanks to a hot stick the 3 indicators can be installed under live-line conditions.

    Technical specifications

    MODEL LODESTAR CL25 LODESTAR CL2 LODESTAR CLO.5
    Reference
    over all conductor diameter



    7-28 mm
    17-33 mm
    24-40 mm
    FO.LO.CL40.00.WW
    FO.LO.CL40.30.WW
    FO.LO.CL40.40.WW
    FO.LO.CL2R.00.WW
    FO.LO.CL2R.30.WW
    FO.LO.CL2R.40.WW
    FO.LO.CL1R.00.WW
    FO.LO.CL1R.30.WW
    FO.LO.CL1R.40.WW
    Installation clamp on conductor clamp on conductor clamp on conductor
    Operating voltage, kV 6-70 6-70 6-70
    Nominal load current, A 2-800 2-800 2-800
    MIN fault current sensing, A 25 2, but min 4% of ILOAD
    0.5
    Absolute current threshold 100 А, 250 А, 500 А, 1000 А 20 A to 1000 А 20 A to 1000 A
    Differential current threshold 50%, 100%, 200%
    25 A, 100 A, 200 A, 500 A
    20 А to 500 A
    20 А to 500 A
    Response time / Inrush resistance 20 ms / 100 ms 20 ms to 200 ms 20 ms to 200 ms
    Indication LED flashing light LED flashing light LED flashing light
    Fault detected
    Phase to Phase
    Phase to Ground
    Fault phase indication
    Fault direction indication no no
    Fault current withstand 25 kA / 200 ms 25 kA / 200 ms 25 kA / 200 ms
    Communication no COMBOX option COMBOX option
    Adjustable reset time 6, 12, 24, 48 hours 1h to 7d 1h to 7d
    Reset Timer (automatic)
    Magnet (manual)
    Reenergized line (automatic)
    Handhold (manual)
    Timer, COM
    Reenergized line (automatic)
    Handhold (manual)
    Timer, COM
    Reenergized line (automatic)
    Test Magnet Handheld Magnet Handheld Magnet
    Live line installation
    Battery life, years at 40⁰C 10 10 10
    Total indicating time, hrs > 1000 > 1000 > 1000
    Temperature, C -40° to +70° -40° to +70° -40° to +70°
    Protection class IP 66 IP 66 IP 66
    Standards/tests IEC 61000-6-2
    IEC 60068-2-30
    IEC 60529
    IEC 60068-2-14
    IEC 60068-2-11
    IEEE 495 (4.4.7, 4.4.8)
    IEC 60068.2.6
    IEC 60068.2.29
    IEC 61000-6-2
    IEC 60068-2-30
    IEC 60529
    IEC 60068-2-14
    IEC 60068-2-11
    IEEE 495 (4.4.7, 4.4.8)
    IEC 60068.2.6
    IEC 60068.2.29
    IEC 61000-6-2
    IEC 60068-2-30
    IEC 60529
    IEC 60068-2-14
    IEC 60068-2-11
    IEEE 495 (4.4.7, 4.4.8)
    IEC 60068.2.6
    IEC 60068.2.29
    Flashing frequency 12 times/min 12 times/min 12 times/min
    Wind load 40 m/s 40 m/s 40 m/s

    LODESTAR Accessories

    Remote control Communication Box for transfering the Fault Information via GPRS (for Cl2 and Cl 0.5)
    Hot-Stick tool for Lodestar Live-Line Mounting

    Instant line currents

    Instant currents on each line (A, B & C) can be viewed thanks to the Remote control.

    Data logs

    Each fault is recorded into the data logger. Over 25 faults can be recorded. Information stored includes: phases, timestamp, currents values and others.

    Logs can be simply viewed on the remote control or downloaded.

    Settings

    Settings of fault indicators can be modified with Remote control. Settings that can be modified are:

        • minimum current sensing thresholds,
        • delay timer,
        • LEDs total flashing duration,
        • automatic reset timers.

    Testing

    Tests that can be performed via handheld.


    Is valid for CL2 and CL0.5 only