Rahoton da na farko don kogin kasa

“First trip” testing yana da muhimmanci wajen neman hali na mekanismi na kawo kofin da ke bayarwa da taimaka a fahimtar yadda circuit breaker zai aiki a cikin yanayi. Saboda haka, koyarar aiki na farko yana da muhimmanci wajen neman hali na circuit breaker daidai.

Circuit breaker yana yi shiga mai tsabta a ranar da dama bila kuma aiki ko kuma aiki. Idan relays na ingantaccen aiki ta samu abu, circuit breaker wanda ya kasance ba a yi aiki shekarar da biyu ya kamata aiki da kyau. Amma, idan circuit breaker ba a yi aiki shekarar da biyu, karamin mutane ya kamata ya zama da damu. Ingantaccen game da karamin mutane za a iya tabbatar da ita a nan daga taswirin kofin kawo kofin da aka bayarwa a lokacin “first trip”.

Muhimmancin da “first trip” testing ke da shi ce ake iya taimakawa wajen taimaka a matsayin yanayi. Idan circuit breaker ba a yi aiki shekarar da biyu, “first trip” testing zai iya bayar da shi idan ya zama da damu saboda abubuwan da ke kan sauran aiki. A halin da na, hanyar aiki masu gaba suna yi a cikin circuit breaker bayan ya zama da rike da ake yi aiki shekara da biyu.

Idan yanayi ana faru, an amfani da circuit breaker (CB) don in yi aiki daidai. Amma, wasu abubuwa masu yawan adadin kasa, kamar kisan lalace, kisa, da jirgin ruwa, zai iya haifar da lokacin aiki na circuit breaker. Yanzu, wannan matsala ya zama da take da shi a lokacin “first trip” testing, kuma babu da shi a nan daga aiki masu gaba.

Analizers na CB masu zamani suna da hanyar aiki online wanda zai iya bayar da lokacin “first trip” bayan da ake yi aiki baya karkashin grid. Aiki online na “first trip” ta da uku muhimmanci:

• Kasuwanci da kudin lokaci: Yana haifar da aiki masu gaba da kuma aiki masu gaba, kuma yana haifar da lokaci da kudin lokaci.

• Taimakawa wajen neman hali: Yana taimakawa wajen neman idan CB ya bukata aiki offline.

• Bayar da shi idan CB ya zama da damu: Yana iya bayar da shi idan CB ya zama da damu a lokacin “first trip” testing.

• Aiki masu gaba na “first trip” testing suna da muhimmanci waɗannan:

• Kofin kawo kofin Trip da Close: Bayar da kofin kawo kofin trip da close.

• Lokacin aiki na main contact: Neman lokacin da main contact ke magana da kuma ciyar da su.

• Graficin battery voltage: Tabbatar da battery voltage a lokacin lokaci.

• Auxiliary Contact Inputs: Bayar da hali na auxiliary contact inputs.

A cikin takarda, an nuna diagram na connection na aiki online daga Vanguard Instruments Company. An amfani da uku non-contact AC current probes, wadanda suka aiki a cikin bushing CT secondary winding, don in bayar da kofin main contact. Idan timer yana iya neman lokacin da aiki trip ko close ya faru, za a iya neman lokacin aiki based on the presence or absence of the bushing current.