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Topic: pole discordance(discrepancy)

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ezrier
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pole discordance(discrepancy)
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unit perlindungan pada EHV BREAKER..fungsi sebagai single pole breaker trip..kemudian terus lock out 3 phase trip..



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benda ni duduk kat mane? kat tiang/pylon or kat MSB?

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ezrier
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unit protection yg ade pada internal breaker atau di control panel pada breaker single pole..kebanyakkan ade pada 275,500kv breaker..



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Contoh breaker single pole?

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ezrier
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breaker single pole bermaksud setiap phase mempunyai breaker dengan menggunakan Gas circuit breaker (sf6) operation sequence:hydraulics,peneumatics,spring charge..

jadi satu feeder ade 3 breaker untuk setiap phase R,Y,B menggunakan pole disrepancy supaya apabila close breaker mesti ketiga-tiga phase close serentak jika salah satu tidak close maka pole discrepancy akan bertindak dalam masa 2saat utk lock out ketiga-tiga phase..begitu juga bile dalam keadaan open breaker konsep yg sama..lock out ketiga-tiga phase..



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berapa percentage accuracy dia.. lock-out tu energize secara mekanikal or elektrikal?

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Henry Ford
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ezrier
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Dia tidak ade accurancy %..cume setting pada time to lockout mesti krng drp 2 second yg dipratikkan oleh TNB...lock out pada mekanikal n elektrik protection..pada breaker..



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motor burn
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letak gambar lah bos,,,,baru snng cite....mana org pernah tgok benda menatang ni,,,,



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dulu,kini dan selamanya elektrik...........
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motor burn wrote:

letak gambar lah bos,,,,baru snng cite....mana org pernah tgok benda menatang ni,,,,

 LIKE!



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Henry Ford
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hizbi7
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bro, kalau tak salah, single pole breaker nih mostly applied by  TNB, scheme untuk 275kv & 500kV. untuk OHL ngan Cable feeder jer kan



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ezrier
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hanye utk HV breaker 275/500KV tnb station..

gambarP1030573.JPG

gambar dia atas menunjukkan 275kv Breaker GIS..gas circuit breaker..single pole..



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pon bler
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GMBAR GIS TU AMIK DARI PMU MNA?


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pon bler
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pole discordance hanyalah scheme...bknnye breaker...susah org yg buka tread ni nk post gmbr...cume gune relay pole discordance,utk CB jnis individual closing n tripping..


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ezrier
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PMU salak south 275kv..gmbr tu nak menunjukkan single breaker yg mengunakan pole discrodance..ade juge breaker siemens yg mengunkan pole discodence pada internal protection pada breake jd dia dah siapkan scheme pole discrodence dalam internal beraker...yg gambar di atas tadi breaker TSG dari XIAN dimana pole discrodence relay shceme pada control panel..

konsep 1 dia bile satu  atau dua phase tak close..breaker akan louckout(trip) open 3phase..

Konsep 2 bile satu atau dua phase tak trip..breaker akan louckout(trip)..

setting standart time 2second..

bergantung pada setting time untul autoreclose relay..pole discrodence mesti lebih dari setting time autoreclose utk single phase trip..1Pole atau 1+3pole..



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