ESTIMATION DEVICE AND SYSTEM

To provide an estimation device and a system that may easily investigate a cause of abnormality.SOLUTION: An estimation device 40 comprises: a storage unit 44 associating and storing state history information indicating a state of an electric apparatus having abnormality as a history and cause history information indicating a cause of the abnormality as a history; an acquisition unit 50 acquiring state information indicating a state of the electric apparatus having the abnormality; a detection unit 52 detecting at least one piece of the state history information similar to the state information acquired by the acquisition unit 50 among the plurality of pieces of the state history information stored in the storage unit 44; and a notification unit 54 notifying the user of the cause of the abnormality based on the cause history information associated with the state history information detected by the detection unit 52.SELECTED DRAWING: Figure 8 【課題】異常の原因の究明を容易にし得る推定装置およびシステムを提供する。【解決手段】推定装置４０は、異常が生じた電気機器の状態を履歴として示す状態履歴情報と、異常の原因を履歴として示す原因履歴情報とが関連付けられて記憶される記憶部４４と、異常が生じた電気機器の状態を示す状態情報を取得する取得部５０と、記憶部４４に記憶された複数の状態履歴情報のうち、取得部５０が取得した状態情報に類似する少なくとも１つの状態履歴情報を検出する検出部５２と、検出部５２が検出した状態履歴情報に関連付けられた原因履歴情報に基づいて、異常の原因を報知する報知部５４と、を備える。【選択図】図８