mankhwala

MFUNDO:

Gawo la IS200EGDMH1AFG
Wopanga: General Electric
Chithunzi cha EX2100
Mtundu wa Zogulitsa: Exciter Ground Detector Module
Chiwerengero cha matchanelo: 12
Nthawi yolowera: 4-20 mA
Technology: Surface Mount
Mtundu Wamagetsi Wamagetsi Ofanana: ± 5 V
Kulimbana Kwambiri Kwambiri: 15Ω
Kutulutsa kwa analogi: 0-20 mA
Kutentha kwa ntchito: -30 mpaka 65 °C

NTCHITO YOPHUNZITSIRA:

IS200EGDMH1AFG ndi Exciter Ground Detector Module yopangidwa ndikupangidwa ndi General Electric ngati gawo la EX2100 Series yomwe imagwiritsidwa ntchito mu GE Excitation Control Systems. IS200EGDMH1 Ground Detection Module imagwiritsidwa ntchito mu EX2100 Excitation Control. Ndi kagawo kawiri, kutalika kwapawiri (6U) mawonekedwe a board omwe amakwera mu Exciter Power Backplane rack (EPBP). Chowunikira chapansi pamunda chimazindikira kukana kwa zaka zotuluka m'munda pakati pa malo aliwonse amtundu wa jenereta pansi, mwina mbali ya ac kapena dc. Dongosolo la simplex lidzakhala ndi EGDM imodzi, ndipo dongosolo lowonjezera lidzakhala ndi atatu. Malo a EGDM (s) akuwonetsedwa mu Chithunzi 1. EXAM, gawo la attenuator, limamva mphamvu yamagetsi pamtunda wa mphamvu ya pansi ndikutumiza chizindikiro ku EGDM (s) pa chingwe cha conductor zisanu ndi zinayi. EXAM module imayikidwa mu High Voltage Module yomwe ili mu Auxiliary Panel.

Pakuwongolera kocheperako, ma board atatu a EGDM amapangidwa ngati Controller (C), Master 1 (M1), ndi Master 2 (M2). Kukonzekera kwa EGDM iliyonse kumayendetsedwa ndi ma pini a pulogalamu pa P2 cholumikizira. Chidziwitso chomwe mbuye amapereka chizindikiro choyendetsa galimoto ku mphamvu yotsutsa mu Attenuator Module imatumizidwa kuchokera ku DSPX, kupyolera mu EISB mu choyikapo chowongolera, kupita ku EGDM C. Atalandira chidziwitso ichi pa ulalo wa fiber-optic, C mwina imapatsa mphamvu relay mu Attenuator Module ngati M2 ndi dalaivala, kapena amasiya opanda mphamvu ngati M1 ndi mbuye wosankhidwa. Nthawi yomweyo, chizindikiro chosiyana chimatumizidwa ku M1 ndi M2 chomwe chikuwonetsa mbuye wosankhidwa. Chizindikirochi chimathandizira jenereta ya siginecha pa mbuye yogwira ndikusankha gwero loyeserera pagawo lililonse (M1, M2, ndi C). Tsopano mbuye wogwira ntchito amalandira Oscillator Signal pa ulalo wa fiber optic kuchokera ku DSPX kudzera mu EISB yomwe imasinthira kukhala chizindikiro chabwino kapena cholakwika cha 50-volt. Magetsi a square wave amatumizidwa ndi chingwe ku gawo la EXAM ndikugwiritsidwa ntchito kumapeto kwa Sense Resistor.

Wowongolera amalandila chizindikiro chosiyanitsidwa (10: 1) kuchokera ku Sense Resistor mu gawo la EXAM. Chowongolera ma sign ndi njira yosavuta yopezera masiyanidwe amplifier yokhala ndi chiŵerengero cha kukana chodziwika bwino chotsatiridwa ndi chosinthira A-to-D (Voltage Controlled Oscillator VCO). VCO imadyetsa fiber optic transmitter. Zozungulira zowongolera ma siginecha zimayendetsedwa ndi magetsi akutali kuti asunge chitetezo cha ogwira ntchito ndi zida chifukwa chamagetsi odziwika bwino pa Sense Resistor. Chowongolera ma siginecha chimatha kuyeza kuchuluka kwa amplifier mphamvu ndikuyika mbali ya mlatho wa Sense Resistor yochepetsedwa polamula kuchokera kugawo lowongolera.

MAWONEKEDWE:

• Gawo la C la woyang'anira limalandira zizindikiro zonse za mapulogalamu ndi zowongolera kuchokera kuzinthu zosiyanasiyana kuti mudziwe kuti ndi gawo liti lomwe lidzakhala mbuye. Imalandiranso chizindikiro cha oscillator kuchokera ku DSPX kotero kuti ikhoza kupanga lamulo loyesa pakusintha kulikonse kwa chizindikiro cha oscillator.

• Lamulo loyesa ndi chizindikiro chachitali cha 250 ms chomwe chikhoza kubwezeretsedwanso pakusintha kulikonse kwa chizindikiro cha oscillator (ngakhale nthawi ya chizindikirocho ili yosakwana 250 ms).

• Lamulo loyesali limatumizidwa ku gawo loyang'anira gawo lililonse (M1, M2, ndi C) kuti apange chizindikiro choyesa cha 250 ms pakusintha kulikonse kwa lamulo loyesa. Chizindikirochi sichikhoza kubwezeretsedwanso ndipo chifukwa chake kusinthako kuyenera kulekanitsidwa ndi zoposa 250 ms chizindikiro china choyesa chisanapangidwe.

• Gawo lamagetsi limalandira 24 V dc kuchokera ku EPSM yoyenera kupyolera mu EPBP (backplane). Pogwiritsa ntchito dc to dc converter, imasintha izi kukhala ± 65 V dc (osadzipatula) kwa amplifier yamagetsi mu gawo la jenereta ya chizindikiro, ndi + 5 V dc (yokhayokha) ndi ± 15 V dc (yokhayokha) yowonetsera chizindikiro.

• Mphamvu ya amplifier yotulutsa mphamvu ndi gwero lamagetsi lomwe lili ndi mphamvu yotulutsa zosakwana 1.0 Ohm. Mphamvu yotulutsa ndi ± 50 Volt squarewave yomwe ili ndi malire pafupifupi 80 mA, komanso nthawi yogwira ntchito ya masekondi 5. Panthawi yoyeserera, nthawiyo imatsika mpaka 400 ms.
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