A Metoda pro Detekce Únik a Krádež Elektřina S A Upínání Ampérmetr
Určit jestliže tam je a problém s zbytek aktuální provozovaný chránič sám
At the distribution transformer, disconnect the fuse on the phase line of the AC contactor that controls the low-voltage line. If the residdual current operated protector can be put into operation normally at this time, it proves that the residdual current operated protector is good. Otherwise, the residdual current operated protector should be repaired and replaced.
Kontrola a určení která fáze řádek má únik
At the distribution transformer, disconnect the neutral wire on the outgoing side of the AC contactor that controls the low-voltage line, and then install the removed fuse core on one of the phases. use a clamp ampérmetr to measure the phase, and the measured current is the leakage current of that phase. To prevent the presence of phase grounding on the line (such as someone using the one line, one place place metoda to krádež elektřina, atd.) způsobující vysoká proudová poškození k nástroj, první místo svorka typ ampérmetr v vysoká aktuální poloha během testování; if the detekce hodnota je velmi malá, pak přepínač svorka ampérmetr ozubená část miliampér ozubená kola pro detekce.
At the distribution transformer, insert a fuse core into the phase line to be inspected, disconnect the neutral line and the fuses of the other two phases, and use a clamp type ammeter to detect the live phase line on the pole to determine the leakage position. In the case of low voltage line power transmission, clamp type ammeters can also be used to detect low-voltage user connection lines within the suspected range. During detection, the phase and neutral wires of single-phase users should be placed in the jaws of the clamp ammeter at the same time, and the three phase and neutral wires of three-phase users should also be placed in the jaws at the same time. If there is no leakage fault, the clamp ammeter indicates zero, otherwise it is not zero.
Kontrola uživatel% 27s interní kabeláž a zařízení pro únik
Měření únik proud na na na příchozí řádek z na uživatel % 27s napájení napájení použití a svorka typ ampérmetr% 2c a at ten stejný čas 2c put uživatel % 27s elektrické zařízení a lampy do a ven jeden by jeden. Kontrola změny v únik proud podle hledání na svorka typ ampérmetr k najít netěsnící zařízení. If all devices are in good condition, or if devices with leakage have exited, but the clamp ampérmetr shows that the user still has leakage current, it is possible that the user's low-voltage line has leakage, and it should be handled according to the specific situation.
Issues to be note
1. Když hledání netěsnost poruchy, AC stykač řízení nízkonapěťové vedení potřeby k být silně zapnuto pro a krátce období of čas.
2. When searching for leakage faults, attention should be paid to safety, and someone must supervise and take safety measures. When reading clamp ammeter data, it is important to maintain a safe distance between the human body and live parts.
3. High order harmonics may interfere with a few residual current operated protective devices, which may cause them to malfunction. If there are users of large harmonic sources such as intermediate frequency furnaces in the substation area, such users should be removed from operation during detection.
4. This method is particularly effective for finding "one line, one ground" electricity thieves. Its characteristic is that the clamp ammeter displays a large leakage current, reaching several hundred milliamperes to several amperes. For unknown electricity thieves, the above method can be used to search, and for those suspected of such electricity theft, they can be directly checked at their connection line using a clamp ammeter.
