Inverter system and method for detecting power cable state the same

A method for detecting the state of a power cable according to an embodiment of the present invention, regarding a method for detecting the state of a power cable in an inverter system, comprises the steps of acquiring a phase current value supplied to a motor via the power cable in accordance with a preset period; generating a moving window in a certain size for the phase current value acquired at constant intervals and acquiring a calculated value of the moving window by using the phase current value contained in the generated moving window; comparing the acquired moving window calculated value with a preset reference value; and detecting whether the power cable has an abnormality in accordance with the result of the comparison.