Sejak tahun 2001, Shenheng Power telah menjadi produsen peralatan transmisi dan distribusi daya yang tepercaya, yang menghadirkan solusi kelistrikan yang andal secara global.
EPC teams sizing a 500 kVA transformer for industrial feeders, commercial campuses, or renewable collection points often see quotes that match on kVA but diverge on impedance, loss temperature basis, and enclosure class.
This 500 kva transformer guide focuses on practical procurement and layout controls for the package below. Pair the checklist with the approved single-line for 500-kva-transformer-selection-guide — hal itu tidak menggantikan persetujuan utilitas atau konsultan.
A 500 kVA rating commonly bridges light commercial pads and heavier industrial incomers. Fault contribution at the LV board rises with the unit size, so cable and breaker ratings must be rechecked even when the legacy nameplate also read “about half a megawatt.”
Buyers should map diversity assumptions from the load study to the chosen kVA step before freezing the purchase order. Stepping from 400 to 500 kVA without updating loss targets or tap range can trigger utility rework later.
Bacaan terkait: daftar periksa RFQ transformator distribusi dan 100 kVA transformer selection guide.
| Input at 500 kVA | Why bids stall without it | Pemilik |
|---|---|---|
| Primary / secondary voltage | Sets winding and BIL class | Diagram garis tunggal |
| Grup vektor | Grounding and relay polarity | Utility / protection note |
| Impedance (%Z) at reference temp | LV fault contribution | Studi gangguan |
| No-load and load loss targets | Operating cost and utility forms | Consultant loss sheet |
| Cooling class (AN/AF or ONAN) | Room ventilation or oil containment | Mechanical engineer |
| Enclosure / IP and noise limit | Indoor occupied-space fit | Civil / ops |
| Altitude and ambient | Derating and cooling margin | Lembar data situs |
Penting: For 500 kva transformer, freeze these inputs on a controlled revision before normalizing commercial bids; late changes cascade into civil, protection, and factory drawings — align with Praktik standar IEC dan catatan sumber otoritas proyek.
At 500 kVA, indoor cast resin dry type units reduce oil handling inside occupied buildings, while outdoor oil immersed packages remain common on utility pads with bunding and standard ONAN practice.
Record filter clearance, room heat rejection, and classified-area limits for dry type rooms. For oil immersed pads, confirm lifting paths, sampling ports, and fire separation before GA release.
| Dokumen / item | Tujuan | Kirim dengan kutipan |
|---|---|---|
| Routine / type test summary | Loss and impedance basis | Yes — before award |
| GA drawing with weights | Pad and lifting plan | Yes — design freeze |
| Terminal / cable entry drawing | LV gland and CT placement | Ya — sebelum pembuatan |
| Tap chart and vector confirmation | Commissioning reference | Yes — with FAT plan |
| Noise / cooling data sheet | Room HVAC sizing | Yes — when indoor |
| O&M manual + spare list | Handover and stocking | Yes — contract schedule |
| Ratio / polarity test sheet | Energization dossier | Yes — before shipment |
Lampirkan tabel ini ke setiap revisi RFQ agar vendor mengembalikan paket teknis yang dapat dibandingkan, alih-alih kutipan katalog.
Confirm grounding, cable torque, and surge protection against the released drawing. Dry type rooms need clear filter access; oil units need silica gel and pressure-relief checks before first energization.
Commissioning should include ratio, polarity, insulation resistance, and protection functional tests tied to the approved settings sheet.
For many 500 kva transformer scopes, begin engineering review with Shenheng Power’s 11kV cast resin dry type transformer (500–1500 kVA) entri katalog yang didokumentasikan pada halaman produk.
Batas aplikasi: Untuk 500 kva transformer (500-kva-transformer-selection-guide), perlakukan halaman katalog yang ditautkan hanya sebagai titik awal teknik. tidak beku 500 kva transformer pengadaan ketika studi kesalahan proyek, penurunan daya ketinggian (altitude derating), atau amplop persetujuan tipe utilitas melebihi peringkat yang dipublikasikan pada halaman produk tersebut.
If the 500 kva transformer study points to a different scheme or rating for 500-kva-transformer-selection-guide, browse the halaman kategori dan kirimkan materi belajar melalui Hubungi Shenheng Power.
Choose the step that matches the diversity-adjusted load study and leaves acceptable fault levels on the LV board — not a round marketing number.
Require the same reference temperature and guaranteed no-load/load loss format across all bidders before commercial comparison.
Only when heat rejection, filter clearance, and fire rules fit the room layout; otherwise evaluate outdoor oil immersed pads.
Use the study %Z to recalculate prospective fault current; do not assume the previous unit’s impedance still applies.
Attach test summaries, GA weights, terminal drawings, tap charts, and commissioning sheets so vendors return comparable binders.
Before winding release whenever seasonal voltage or new upstream generation can shift the operating band.
PT Shenheng Power Equipment Co., Ltd.
