アプリケーション of 赤外線 温度計 入力 操作 電気 機器
The 相対 温度 差 方法, as the name implies, is a method of judging based on the relative temperature difference. 相対 温度 差 is the パーセンテージ of the ratio of the 温度 差 間 2 対応する 測定 点 to the 温度 上昇 of the hter point。
温度 上昇——the 差 間 表面 温度 の 測定 物体 および 周囲 温度 および 表面 温度 の 参照 ボディ 測定 連続 by the the same テスト 機器。
温度 差 - 温度 差 間 異なる 測定 オブジェクト または 異なる 部品 の 同じ 測定 オブジェクト 連続 測定 by the 同じ テスト 機器。
Ambient temperature reference body - the object used to collect the ambient temperature is called the ambient temperature reference body. It may not have the real ambient temperature at that time, but it has similar physical properties to the measured object and is in a similar environment as the measured object. For current-heating equipment, if it is found that the thermal state of the conduction part of the equipment is abnormal, the relative temperature difference is calculated after accurate temperature measurement, and the nature of the equipment defect is judged according to the provisions in the above table. When the temperature rise of the heating point is less than 10K, it is not appropriate to determine the nature of the equipment defect according to the above provisions. For equipment with small load rate and small temperature rise but large relative temperature difference, if conditions change the load rate, the load current can be increased and retested to determine the nature of equipment defects. When this kind of retest cannot be carried out, it can be tentatively determined as a general defect, and attention should be paid to monitoring.
The similar comparison method is to compare equipment of the same model and the same manufacturer. The similar comparison method can be divided into current heating type equipment and voltage heating type equipment comparison. In the same electrical circuit, when the three-phase current is symmetrical and the three-phase (or two-phase) equipment is the same, by comparing the temperature rise of the corresponding parts of the three-phase (or two-phase) current heating type (such as current transformer) equipment, it can be judged Whether the equipment is normal. If the three-phase equipment is abnormal at the same time, it can be compared with similar equipment in the same circuit. When the three-phase load current is asymmetrical, the influence of the load current should be considered. For voltage-heating equipment (such as arresters) with the same model and specification, it can be judged whether the equipment is normal according to the difference in temperature rise at the corresponding points. Defects of voltage-induced heating equipment should be determined on the basis of allowable temperature rise or similar allowable temperature difference. Generally, when the temperature difference of the same type exceeds 30 percent of the allowable temperature rise, it shall be regarded as a major defect. When the three-phase voltage is asymmetrical, the influence of the working voltage should be considered.
The サーモグラム 分析 方法 is to 判断 かどうか the 機器 is normal or not based on the difference 間 the サーモグラム of the same equipment in the normal state and the abnormal state。 ファイル 分析 方法 is to 分析 the 検出 データ (そのような as 温度 上昇, 相対 温度 差, および サーモグラム) of the same 機器 in 異なる 期間 to find out the trend and rate of change of the 暖房 パラメータ of the 機器, so as to judge かどうか the 機器 is normal。
