Lodestar FM-CS
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Lodestar FM-CS

Lodestar FM

Lodestar FM-CS is a universal device for registration and analysis of fault processes in a network of any topology and neutral type. Lodestar FM-CS can be used as a logger, fault current indicator, high-voltage control device. It could be installed on the control board of relay compartment of a switchgear of any type on panels and control cabinets of relay equipment and on control boards of the substation.

The functionality of model Lodestar FM-CS is similar to model Lodestar FM, but it also has own easily mounted current sensors based on Rogowski coil that gives the following advantages:

• Current transformer does not have unnecessary load;
• It does not cause distortion when using a current transformer for measurements;
• It is used in substations where regular current transformers are not planned, installed or required.

Feeder Monitor Lodestar FM-CS monitors independently each input of switchgear cell with double cable input.

Lodestar FM-CS model has:

• Different absolute and differentiated current thresholds;
• Other measurement accuracy;
• Communication protocol IEC 60870-5-104 is added.

Lodestar FM-CS benefits:

Detects fault direction Effective in resonant grounded neutral grids
Logs all types of emergency situations:
- phase-to-phase faults;
- phase-to-ground faults;
- 2-or-3-phase-to-ground faults
Operates in mixed systems:
overhead, cable and overheadcable ones
High accuracy in measurement of current and voltage Above 0.1 A short circuit fault logging
Immediate data processing in the Device Operates in double-ended and loopfed grids, as well as in radial grids
Feeder Monitor Lodestar FM-CS displays a faulted phase on the front LED-display Event information both visually and in the SCADA system
Easy to configure by a couple of clicks in SW Memorizes more than 200 events


Technical specifications

Types of logged faults −2-and-3-phase short-circuit fault identification;
−2-and-3-phase short-circuit fault direction finding;
−2-and-3-phase-to-ground fault identification;
−2-and-3-phase-to-ground fault direction finding;
−Phase-to-ground fault identification;
−Phase-to-ground fault direction finding
Logging the line switching faults Yes
Selectivity Phase-to-ground and short-cicuit faults direction finding
Minimum zero sequence current for phase-to-ground fault logging 0.5 A
Fault visual indication − LED-display;
− LED indication
Number of memorized faults 240
Power supply used in the indicator −Inbuilt standby removable lithium storage battery (15 years);
−Powered via operation current source with any type of voltage =100 – 240 V (±10%)
Fault indication reset −By an external command;
−By the timer;
−By the device button
Interface RS-485 MODBUS communication protocol
Ethernet IEC104 communication protocol
Logging of −Voltage;
−Industrial frequency;
−Power factor in three phases;
−Flow distribution direction;
Measurement accuracy −Voltage:
−when using capacitive dividers- 3%;
−when using volatge transformer - 1%;
−Active, reactive and full power 3%;
−Industrial frequency 1%




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