Various embodiments of the present invention detects a minute electric current from the fire detector aspect is installed in the inside / outside of the gas turbine which relates to a gas turbine carbon dioxide fire-fighting equipment system according to the micro-current sensing techniques, to address, and the voltage the micro-current the conversion, and based on the detected micro-current wire of the smoke detectors ground fault condition, the non-operation of a fire detector in accordance with the converted voltage value, normal state, it detects a fire under normal operating conditions, or classified as a loop error in wire open state and, to provide a gas turbine system employing the carbon dioxide fire extinguishers fine current sensing technology that can monitor the exact state of the smoke detectors. Various embodiments of the invention To this end, at least one fire detector is installed in a gas turbine; It converts the output current from the fire detector to a voltage input section to input a voltage value; A controller for outputting a control signal corresponding to the voltage value received from the input unit; And it includes a display for displaying the state of the gas turbine by a control signal received from the controller, and the controller of the fire detector is not act normal state according to a voltage value, so long as the fire detector detect a fire under normal operating conditions, the smoke detectors It discloses a gas turbine carbon dioxide fire extinguishing plant for the wire is transmitted to the display unit an electrical signal corresponding to at least one of the wires of the wire open state and smoke detectors short open wire shortcircuited.