ngwaahịa

NKWUO:

Nọmba akụkụ: IS200EGDMH1AFG
Onye nrụpụta: General Electric
Usoro: EX2100
Ụdị ngwaahịa: Exciter Ground Detector Module
Ọnụọgụ nke ọwa: 12
Ogologo ntinye: 4-20 mA
Teknụzụ: Ugwu elu
Ụdị voltaji a na-ahụkarị: ± 5 V
Nguzogide ndu kacha elu: 15Ω
Analog mmepụta ugbu a: 0-20 mA
Okpomọkụ na-arụ ọrụ: -30 ruo 65 Celsius

Nkọwa ỌRỤ:

IS200EGDMH1AFG bụ Exciter Ground Detector Module arụpụtara ma mee ya site na General Electric dị ka akụkụ nke EX2100 Series eji na GE Excitation Control Systems. A na-eji modul nchọpụta ala IS200EGDMH1 na njikwa mkpali EX2100. Ọ bụ oghere okpukpu abụọ, bọọdụ ụdị ihe dị elu okpukpu abụọ (6U) nke na-agbago na rack Exciter Power Backplane (EPBP). Onye na-achọpụta ala ubi na-achọpụta nkwụsị nke afọ n'etiti ebe ọ bụla na sekit ubi generator na ala, ma n'akụkụ ac ma ọ bụ dc. Usoro simplex ga-enwe otu EGDM, na usoro ejighi arụ ọrụ ga-enwe atọ. E gosipụtara ebe EGDM (s) dị na Figure 1. EXAM, modul attenuator, na-ahụta voltaji n'ofe ala mmetụta resistor ma na-eziga mgbaàmà na EGDM (s) n'elu eriri nke itoolu. A na-agbanye modul EXAM na High Voltage Module nke dị na Panel Auxiliary Panel.

N'ime njikwa anaghị arụ ọrụ, a na-ahazi setịpụ bọọdụ EGDM atọ dị ka Controller (C), Master 1 (M1), na Master 2 (M2). A na-achịkwa nhazi maka EGDM nke ọ bụla site na nhazi nke ntụtụ mmemme na njikọ P2. Ozi nke nna ukwu na-enye mgbaama mbanye na uche resistor na Attenuator Module ezigara site na DSPX, site na EISB na njikwa ogbe, ka EGDM C. Mgbe na-enweta ozi a n'elu eriri-optic njikọ, C ma ike ọsọ agba anọ na Attenuator Module ma ọ bụrụ na M2 bụ ọkwọ ụgbọ ala, ma ọ bụ hapụ ya enweghị ike ma ọ bụrụ na M1 bụ họọrọ nna ukwu. N'otu oge ahụ, a na-eziga mgbaàmà dị iche na M1 na M2 nke na-egosi nna ukwu a họọrọ. Mgbama a na-enyere onye na-emepụta mgbama aka na nna ukwu nọ n'ọrụ wee họrọ isi iyi iwu nnwale na modul ọ bụla (M1, M2, na C). Ugbu a nna ukwu nọ n'ọrụ na-enweta akara ngosi Oscillator n'elu njikọ fiber optic sitere na DSPX site na EISB na ọ na-atụgharị gaa na mgbama 50-volt dị mma ma ọ bụ nke na-adịghị mma. A na-eziga voltaji ebili mmiri nke square a na eriri na modul EXAM ma tinye ya n'otu njedebe nke Sense Resistor.

Ihe mkpuchi mgbama na-enweta mgbama dị iche (10:1) dị iche site na Sense Resistor na modul EXAM. Igwe nrụbama bụ ihe dị mfe ịdị n'otu na-enweta ihe nrịbawanye dị iche yana oke njuju nke ọnọdụ nkịtị na-esochi ihe ntụgharị A-to-D (Voltage Controlled Oscillator VCO). VCO na-enye nnyefe eriri optic. A na-akwado sekit ihe nrụnye mgbaàmà site na ọkụ dịpụrụ adịpụ iji dokwaa ndị ọrụ na nchekwa akụrụngwa n'ihi oke voltaji na-ahụkarị na Sense Resistor. Igwe mkpuchi mgbama nwere ike tụọ ọkwa nrụpụta ike site n'itinye akụkụ àkwà mmiri nke Sense Resistor attenuated na iwu sitere na ngalaba njikwa.

Atụmatụ:

• Akụkụ C nke onye na-ahụ maka njikwa na-enweta akara ngosi mmemme na njikwa niile site na isi mmalite dị iche iche iji chọpụta nke modul ga-abụ nna ukwu. Ọ na-enwetakwa mgbama oscillator sitere na DSPX ka o wee nwee ike iwepụta iwu nnwale na mgbanwe ọ bụla nke mgbama oscillator.

• Iwu nnwale bụ mgbama ogologo 250 ms nke enwere ike iweghachite na mgbanwe ọ bụla nke mgbama oscillator (ọbụlagodi ma ọ bụrụ na oge mgbama ahụ erughị 250 ms).

• A na-ezigara iwu ule a na ngalaba njikwa nke modul ọ bụla (M1, M2, na C) iji mepụta akara ule ogologo 250 ms na mgbanwe ọ bụla dị mma nke iwu ule. Mgbama a enweghị ike iweghachite ya mere a ga-ekewapụ mgbanwe ndị ahụ site na ihe karịrị 250 ms tupu enwee ike iwepụta akara ule ọzọ.

• Ngalaba ọkọnọ ike na-enweta 24 V dc site na EPSM kwesịrị ekwesị site na EPBP (backplane). N'iji dc ka onye ntụgharị dc, ọ na-atụgharị nke a na ± 65 V dc (na-abụghị nke dịpụrụ adịpụ) maka ụda ike na ngalaba generator, na + 5 V dc (kewapụrụ) na ± 15 V dc (kewapụrụ) maka nhazi mgbaàmà.

• Ihe nrịbawanye ike bụ isi iyi voltaji nwere ihe nrụpụta nke na-erughị 1.0 Ohm. Voltage mmepụta bụ ± 50 Volt squarewave nke nwere oke dị ugbu a na ihe dịka 80 mA, yana oge ọrụ nkịtị nke 5 sekọnd. N'oge ọrụ ule, oge na-ebelata ruo 400 ms.
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