Mafiya da Dukkanda da Kammala Aiki na ABB VD4 Vacuum Circuit Breakers!

An samun da take IEE-Business VD4 Breakers?Har zuwa ya fi dace-dace ta hankali na VD4 a tattalin arziki, ba wani wurare ba zai iya haifi da wasu kungiyoyi ne da gaba-gaban yin. A nan, an samun da tarihin abubuwan da ke faru a kan VD4 kuma jihohin da za su amfani don sa—ina shawar da wannan zai taimaka maka a yakin rikicin rana!

Kungiyar 1: Kungiya a Mecenar da Energy

Alamun:
Motoci ba zai iya mecenar da energy, amma mecenarta a kan kyau.

Muhimmancin Da Sake Zama & Jihohin:

1. Ba An Faru Fadada

Tambayata cewa fadada ta fito a kan terminal block a kan switchgear da kuma tabbacin cewa sakamakon kontrol fadada 2ZK a kan mecenar da energy ta fito a kan yawan.

2. Sakamakon Energy Storage Limit (S1) Yadda Ya Sakamta

Sakamakon S1 a kan VD4-12 yana kontrola motoci a kan yawan da kuma signal circuits. Duka biyu na normally closed (NC) contacts a kan sanyi sun kontrola motoci: idan spring ta fito a kan yawan, S1 yana yi nasara mekaniki, kafin koma NC contacts kuma kafin koma fadada ta motoci. Idan spring ta fito ko ba ta yawan, NC contacts ta koma don ina bayyana.

• Kafin koma aviation connector da kuma kafa resistance a kan pins 25# da 35#.

• Idan akwai abu mai ban sha'awa, nemi NC contacts 31–32 da 41–42. Idan contacts ta koma, wannan yana nufin S1 ya sakamta—kafin koma S1 switch.

• Ba da damar, kafin koma S1 drive rod gap zuwa 2.5–2.8 mm ba da damar.

3. Brushes na Motoci Sun Yan Rike

Yan rike brushes na motoci zai haifi da motoci a yi waɗannan. Kafin koma carbon brushes.

4. Motoci na Energy Storage (MO) Yadda Ya Sakamta

Idan circuit na kontrol ta fito amma resistance ta yake da abu mai ban sha'awa, motoci zai iya sakamta.

• Kafin koma wiring, kafin koma uku mounting bolts, kafin koma motoci.

Kungiyar 2: Breaker Ba Zai Iya Yawan

Alamun:

• Yawan na electrical ba ta yawa; closing solenoid (trip coil) ba ta yi nasara.

• Yawan na electrical ba ta yawa saboda solenoid na kadan, amma yawan na manual ta yawa.

• Yawan na electrical da manual ba su yawa ba.

Don Alamun 1 (Solenoid Ba Ta Yi Nasara):

1. Drawer Unit Ba Ta Fitofitofita
Idan withdrawable unit ba ta fitofitofita, biyu na limit switches a kan chassis ba su iya kafin koma interlock coil circuit, kafin koma yawan.

• Nemi position indicator a kan switchgear.

• Duba cewa unit ta fitofitofita a kan "Service" ko "Test" position.

2. Closing Interlock Solenoid (Y1) Ko Microswitch (S2) Yadda Ya Sakamta
Y1 solenoid ko S2 microswitch na baya yana iya haifi da circuit na yawan.

• Kafa resistance na Y1 coil. Idan akwai abu mai ban sha'awa (shorted ko open), kafin koma Y1 module.

• Idan resistance ta fito, nemi S2 actuation. Amfani da needle-nose pliers don ina kasa S2 spring contact outward zuwa 1–2 mm. Yawan na Y1 plunger da kuma kafin koma click dari S2.

3. Auxiliary Switch (S3) Ko Aviation Plug Pin Dropout Yadda Ya Sakamta
Open contacts a kan S3 ko aviation connector pin dropout zai haifi da circuit na yawan.

• A nan open position, idan NC contact na S3 ba ta koma, kafin koma S3 drive rod gap.

• Idan pins ta koma ko ta yake da abu mai ban sha'awa, kafin koma aviation connector.

Don Alamun 2 (Solenoid Na Kadan, Yawan Na Manual Ta Yawa):
Zai iya zama saboda voltage na yawan na kadan ko closing coil rectifier bridge na baya.

• Nemi power supply voltage.

• Test output na rectifier bridge; kafin koma closing coil module idan ta yake da abu mai ban sha'awa.

Don Alamun 3 (Yawan Na Electrical Da Manual Ba Su Yawa Ba):
Zai iya zama saboda mechanical interlock plate a kan spring mechanism ta koma ko ta ba ta reset ba a kan racking in, kafin koma closing pawl ba ta koma ba.

• Nemi interlock plate da kuma cikakken ƙarin.

• Idan ta koma, kafin koma entire actuator module.

⚠️ Tabbacin fadada na closing coil a nan zai iya haifi da coil burnout.

Kungiyar 3: Breaker Ba Zai Iya Trip (Trip Rejection)

Wannan ita ce kungiyar mai zurfi.

Alamun:

• Trip na electrical ba ta yawa; trip solenoid (Y2) ba ta yi nasara.

• Trip na electrical ba ta yawa saboda solenoid na kadan, amma trip na manual ta yawa.

Don Alamun ① (Solenoid Ba Ta Yi Nasara):

1. Trip Solenoid (Y2) Yadda Ya Sakamta

Kafa resistance na Y2 coil. Idan akwai abu mai ban sha'awa, kafin koma trip coil.

2. Contact na Auxiliary Switch (S4) Yadda Ya Mai Bace

Bayan yawan, NO contact na S4 yana buƙatar zuwa don ina kafin koma trip circuit. Bayan tripping, ya buƙatar ina koma kadan don ina kafin koma energization na coil. Operation na ƙarin zai iya haifi da S4 contacts.

• Don yanayi mai ban sha'awa, kafin koma S4 drive rod gap.

• Don yanayi mai ban sha'awa, kafin koma S4 auxiliary switch.

3. Wiring Loose Ko Aviation Plug Pin Dropout

Wiring loose ko aviation plug pin dropout zai haifi da tripping.

• Nemi da kuma kafin koma wires.

• Kafin koma aviation connector idan pins ta koma ko ta yake da abu mai ban sha'awa.