--- title: "Distribution Transformers | Entogo" description: "Entogo — Distribution Transformers. Choose by phase, installation and network connection." url: https://entogo.ca/products/families/distribution-transformers/ lang: en type: website image: https://entogo.ca/og-cover.jpg alternates: en: https://entogo.ca/products/families/distribution-transformers/ fr-CA: https://entogo.ca/fr/products/families/distribution-transformers/ fr: https://entogo.ca/fr/products/families/distribution-transformers/ es: https://entogo.ca/es/products/families/distribution-transformers/ ar: https://entogo.ca/ar/products/families/distribution-transformers/ pl: https://entogo.ca/pl/products/families/distribution-transformers/ ro: https://entogo.ca/ro/products/families/distribution-transformers/ ru-KZ: https://entogo.ca/ru/products/families/distribution-transformers/ ru-UZ: https://entogo.ca/ru/products/families/distribution-transformers/ ru-KG: https://entogo.ca/ru/products/families/distribution-transformers/ ru-TJ: https://entogo.ca/ru/products/families/distribution-transformers/ ru-TM: https://entogo.ca/ru/products/families/distribution-transformers/ ru-AZ: https://entogo.ca/ru/products/families/distribution-transformers/ ru-AM: https://entogo.ca/ru/products/families/distribution-transformers/ ru-GE: https://entogo.ca/ru/products/families/distribution-transformers/ site: https://entogo.ca/ llms: https://entogo.ca/llms.txt --- Products › Distribution Transformers Entogo # Distribution Transformers Choose by phase, installation and network connection. Start with the utility connection and installation: a single-phase pad-mounted unit, a three-phase transformer and a complete pole-mounted package serve different layouts. Include service voltage, secondary voltage, kVA, phase arrangement, protection and the utility specification in the inquiry. [![Single-Phase Pad-Mounted Transformer](https://entogo.ca/_astro/single-phase-pad-mounted-transformer.uCSM4KsT_Z206fgJ.webp) Distribution Transformers ### Single-Phase Pad-Mounted Transformer Entogo supplies single-phase pad-mounted transformers for underground distribution. Specify the utility voltage, kVA, dead-front cable interface, loop or radial feed and secondary service before selecting the configuration. View](https://entogo.ca/products/single-phase-pad-mounted-transformer/)[![Representative outline drawing of an Entogo three-phase dead-front pad-mounted transformer — front and side elevations, not a photograph](https://entogo.ca/_astro/Entogo-Three-Phase-Pad-Mounted-Transformer-Outline.BEuthAyQ_ggksH.webp) Distribution Transformers ### Three-Phase Pad-Mounted Distribution Transformer Three-phase pad-mounted distribution transformer for North American utility, commercial and industrial service — 75–2500 kVA, 12.47–34.5 kV class primary to 480Y/277 or 208Y/120 secondary, dead-front loop/radial-feed, NEMA 3R. Designed to IEEE C57.12.34 and DOE 10 CFR 431; UL/CSA certifiable. View](https://entogo.ca/products/three-phase-pad-mounted-transformer/)[![Entogo single-phase overhead pole-mounted distribution transformer](https://entogo.ca/_astro/Entogo-Oil-Immersed-Power-Transformer.CrmqSHyg_1u981k.webp) Distribution Transformers ### Single-Phase Overhead (Pole-Mounted) Distribution Transformer Single-phase overhead pole-mounted distribution transformers for North American utility lines — 10 to 167 kVA, 7200 / 12470GrdY / 24940GrdY primary to 120/240 V secondary, conventional or completely self-protected (CSP). Designed to IEEE C57.12.20 and DOE 10 CFR 431 efficiency, 60 Hz; UL / CSA certifiable. View](https://entogo.ca/products/single-phase-pole-mounted-transformer/)[![Entogo combined pad-mounted transformer with integrated MV switching](https://entogo.ca/_astro/Entogo-Combined-Transformer.Dnpo8NDr_ZpRF3M.webp) Distribution Transformers ### Combined Pad-Mounted Transformer (Integrated MV Switching) Combined pad-mounted transformer integrating the medium-voltage load-break switch, fuse protection and low-voltage distribution with the transformer in one tamper-resistant tank — 75–2500 kVA, 15/25/35 kV class, 60 Hz. Designed to IEEE C57.12.34/.28; UL/CSA certifiable. View](https://entogo.ca/products/combined-pad-mounted-transformer/)[![Entogo overhead pole-mounted distribution transformer complete set with cutout and arrester](https://entogo.ca/_astro/Entogo-10kV-Pole-Mounted-Transformer-Complete-Set.CbDfTClh_ZOxieg.webp) Distribution Transformers ### Overhead Distribution Transformer Set (Pole-Mount Package) A complete overhead pole-mount distribution package — transformer, fused cutout, lightning arrester, secondary/metering pedestal, jumpers and hardware — engineered to a single 15 kV class, 60 Hz specification. Transformer designed to IEEE C57.12.20 and DOE 10 CFR 431; UL/CSA certifiable. View](https://entogo.ca/products/pole-mount-transformer-set/) ## Design references [![Utility distribution substation with three-phase power transformers — selecting the correct kVA rating for a North American electrical load](https://entogo.ca/_astro/entogo-buyer-line-utility-electrical-transformer-substation.CknnJLeO_2kbHKd.webp) Power & Distribution ### How to size a transformer: a practical guide to kVA selection How to convert a real electrical load into the right transformer kVA: the calculation, the standard ANSI/IEEE rating ladder, and the margins for continuous duty, future growth, ambient and altitude that sit between calculated load and nameplate. View](https://entogo.ca/insights/how-to-size-a-transformer-kva-selection/)[![Power transformer at an electrical substation with an on-load tap changer for voltage regulation](https://entogo.ca/_astro/transformer-voltage-regulation-tap-changers.LSKEj7V-_xljGw.webp) Power & Distribution ### De-energized taps or a load tap changer? Specifying transformer voltage regulation Transformer regulation is %R cos θ + %X sin θ plus a small quadratic term. A 1500 kVA, 5.75 %Z unit at 0.85 PF drops 3.85 %, so a 13.3 to 14.0 kV primary needs the 13 455 V tap to hold 456 to 504 V. The full ANSI C84.1 Range A primary swing needs an OLTC or a step regulator. View](https://entogo.ca/insights/transformer-voltage-regulation-tap-changers/)[![Outdoor electrical substation with distribution transformers and overhead conductors under a clear sky in Canada](https://entogo.ca/_astro/entogo-insight-electrical-substation-transformer-canada.Jqilemt9_HRxtM.webp) Standards & Compliance ### How do transformers get approved for use in Canada? Before a transformer can be energised in Canada, the Canadian Electrical Code requires it to be "approved" — either certified by an SCC-accredited body (a CSA, cULus or cCSAus mark) or field-evaluated to CSA SPE-1000. A US-only "UL Listed" mark is not enough. Here is how the approval system actually works. View](https://entogo.ca/insights/transformer-approval-certification-canada/) For Canadian and US projects, include the utility specification, service frequency and required approvals. State whether the order is for the transformer alone or an integrated equipment package. ## Discuss your equipment requirements [Request a project quote](https://entogo.ca/contact/) ## Browse equipment families Compare equipment by function and installation. Product pages identify the available scope and the information needed for a quotation. ## Structured data (JSON-LD) ```json {"@context":"https://schema.org","@type":"CollectionPage","@id":"https://entogo.ca/products/families/distribution-transformers/#collection","url":"https://entogo.ca/products/families/distribution-transformers/","name":"Distribution Transformers","description":"Entogo — Distribution Transformers. 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