Blok Daya Fuji Electric Tahan Air 12V 6RI75G-160

6RI75G-160 Fuji Electric Bridge Rectifier Module 75A / 1600V / Three-Phase Power Diode / Industrial Drive Input Rectifier

Three-Phase Bridge Rectifier AC to DC Conversion at Drive Input

The 6RI75G-160 is a Fuji Electric three-phase bridge rectifier module the power diode assembly that forms the front end of an AC variable frequency drive, yang merupakan bagian depan dari drive frekuensi variabel AC.mengkonversi catu daya AC tiga fase ke bus DC yang menyalakan IGBT inverter stage drive.

Dalam arsitektur VFD industri standar, pasokan AC melewati jembatan rectifier terlebih dahulu sebelum bus DC. The 6RI75G-160's six silicon power diodes are arranged in a three-phase full-wave bridge configuration — six diodes (two per phase — one upper and one lower) produce a six-pulse rectified DC output from the three-phase AC input.

Spesifikasi Utama

Power Diode Module vs IGBT Module The Rectifier's Role

The 6RI75G-160 is a passive rectifier module. Ini membedakannya dari modul IGBT di drive yang sama:

Operasi pasif:Diode conduct automatically when forward biased ∙ no gate drive signals, no control electronics, no protection circuits are needed. Dioda conduct automatically when forward biased ∙ no gate drive signals, no control electronics, no protection circuits are needed. Dioda conduct automatically when forward biasedDaya mengalir melalui dioda ketika anode lebih positif dari katode.Itu memblokir ke arah yang berlawanan.

Uncontrolled rectification:The 6RI75G-160 produces a fixed DC output voltage determined by the AC input voltage approximately 1.35 × Vline (rms) for a three-phase bridge.The DC bus voltage cannot be adjusted through the rectifier module (tekanan bus DC tidak dapat disesuaikan melalui modul rectifier).

Keandalan tinggi:Passive diode modules have no active components to fail from gate drive issues, under-voltage lockout, or control electronics faults.long-life component rectifier modules in well-maintained drives often outlast the IGBT modules by a significant margin .

Aplikasi

Variable frequency drive:Aplikasi utamanya adalah sebagai input rectifier dari VFD industri dalam kelas 1537kW dari pasokan 400V, atau 2255kW dari pasokan 690V.The 6RI75G-160 converts the mains AC to the DC bus that powers the IGBT inverter. The 6RI75G-160 convert the mains AC to the DC bus that powers the IGBT inverter..

ABB ACS600 series drive:The 6RI75G-160 is confirmed as the rectifier module used in ABB ACS600 variable speed drives - a widely deployed industrial drive series for pump, fan, and process motor control.

Sistem penggerak servo industri:Some FANUC and other CNC drive systems use a separate rectifier module in the power supply section to supply the DC bus for multiple servo axes — the 75A / 1600V class covers mid-range servo drive systems.

DC power supplies for industrial processes:Suplai daya DC yang diatur besar untuk proses elektrokimia, electroplating,dan industri baterai charging di mana jembatan tiga fase memberikan output DC yang halus untuk tahap regulasi hilir.

UPS rectifier front ends:Some industrial UPS architectures use a diode rectifier front end to charge the battery from the AC supply — the 6RI75G-160's 1600V rating provides headroom for the battery charger's elevated DC voltage.

Industrial crane and hoist drives:Crane drive systems with separate rectifier and inverter stages 6RI75G-160 memasok bus DC untuk inverter motor angkat dan perjalanan.

FAQ

Q1: Bagaimana modul rectifier 6RI75G-160 yang gagal didiagnosis?

A failed diode in the bridge produces a characteristic pattern: one missing six-pulse ripple frequency component in the DC output (the output has only 3-pulse ripple instead of 6-pulse), dan diode yang gagal di jembatan menghasilkan pola karakteristik:Tegangan bus DC lebih rendah dari yang diharapkan., atau asymmetric AC input current draw. Measure diode junction resistance in both directions with the DC bus discharged a shorted diode shows near-zero resistance in both directions;Sebuah dioda terbuka menunjukkan resistensi tinggi di kedua arah..

Q2: Apakah modul rectifier 6RI75G-160 memerlukan sinyal gerbang atau kontrol?

Power diode modules are completely passive ∙ they require only correct mechanical mounting with thermal interface compound. mereka hanya membutuhkan pemasangan mekanik yang benar dengan senyawa antarmuka termal.koneksi terminal daya yang benar (tiga terminal input AC dan dua terminal output DC)Tidak ada sirkuit gerbang drive, kontrol catu daya, atau kabel sinyal yang terhubung ke modul rectifier.

Q3: What is the typical DC output voltage from 6RI75G-160 from a 400V AC supply?

For an unloaded three-phase full-wave bridge from 400V line-to-line AC: VDC ≈ 1.35 × 400V = 540V DC nominal.the typical operating DC bus voltage in a 400V industrial drive is 530 ∼ 560 V DC. Dari 480V AC: approximately 648V DC no-load. The exact voltage depends on supply impedance and load current.

Q4: What thermal interface and mounting precautions apply to 6RI75G-160 installation? Apa yang harus dilakukan untuk menginstal 6RI75G-160?

The base plate must contact the heatsink with clean, uniform thermal interface compound to achieve rated thermal resistance. Terapkan senyawa sebagai tipis,even layer covering the full base plate area ̇ both insufficient compound and excessive compound increase thermal resistance (dalam bahasa Inggris: even layer covering the full base plate area). Torque the mounting screws to the Fuji specification (typically 2×4 N·m for this module class).Verify heatsink thermal resistance is adequate for the 75A operating current and ambient temperature before recommissioning Mengverifikasi resistensi termal heatsink adalah cukup untuk 75A operating current dan suhu sekitar sebelum dikomisi.