Best 50kva 3 Phase Transformer Options for Industrial Use
For industrial power distribution, a 50 kVA three-phase transformer provides reliable voltage conversion with high efficiency. This guide highlights five top options, detailing primary and secondary voltages, cooling types, and insulation features. Each entry includes a quick overview and a direct link to an Amazon listing, helping facilities managers compare specs quickly and choose the right transformer for CNC machines, manufacturing lines, and other heavy equipment.
| Product | Brand | Primary Voltage | Secondary Voltage |
|---|---|---|---|
| 50 kVA Isolation Transformer, 3 Phase 480V to 240V | GoHz | 480V | 240V |
| 50 kVA Isolation Transformer, 3 Phase 480V to 208V | GoHz | 480V | 208V |
| LVSEDTAL 50kva 3 Phase 380V to 220V Dry Type | LVSEDTAL | 380V | 220V |
| LVSEDTAL Three-Phase Dry-Type Isolation Transformer 380V to 440/480/600V | LVSEDTAL | 380V | 440/480/600V |
| S20-M-50 50KVA Oil-immersed Three-Phase Transformer | BDPQKPDV | — | — |
Summary: 5 products selected for 50 kVA three-phase transformers, detailing primary/secondary voltages and notable features to guide selection.
Product Highlights
GoHz 50 kVA 480V to 240V Isolation Transformer
Capacity and voltage conversion: 50 kVA, 3-phase, primary 480V, secondary 240V. Designed for three-phase to three-phase voltage conversion, suitable for industrial lines needing a stable 240V feed. High efficiency approximating 95% with copper windings to minimize electrical noise and heat generation. Insulation is rated for demanding environments with H level insulation and Dyn11 wiring, and the unit uses dry-type air cooling for safe indoor operation. This model supports a range of industrial applications where reliable isolation and voltage conversion are critical.
GoHz 50 kVA 480V to 208V Isolation Transformer
Capacity and voltage: 50 kVA, 3-phase, primary 480V, secondary 208V. This transformer provides robust three-phase isolation with a flexible 208V secondary, common for equipment that requires 208V three-phase services. High efficiency copper winding minimizes energy loss and reduces audible noise. H level insulation and Dyn11 wiring enable reliable operation in harsh environments, while dry-type cooling makes maintenance straightforward and safe for indoor installations.
LVSEDTAL 50kva 3 Phase 380V to 220V Dry Type Isolation Transformer
Applications and durability: This 50 kVA three-phase transformer converts 380V to 220V with a dry-type construction for safer indoor use. Claims highlight long service life and compact size, making it suitable for space-constrained industrial environments. The design emphasizes stable operation over time, with emphasis on insulation integrity and reduced magnetic leakage. Ideal for CNC tooling, mills, and automation equipment requiring a consistent 220V supply.
LVSEDTAL CSD/CSGD-50KVA Three Phase Isolation 440V Transformer
Stability and compact design: A 50 kVA three-phase isolation option optimized for reliability in challenging environments. It emphasizes stable long-term operation with durable construction and a compact footprint, suitable for factory floors and equipment rooms where space is at a premium. Aligns well with systems needing isolation between input and output sides for sensitive CNC and automation equipment.
LVSEDTAL Three-Phase Dry-Type Isolation Transformer, 380V to 440/480/600V
Voltage range flexibility: This model supports a 380V input and outputs multiple high-voltage options (440/480/600V), making it versatile for multi-voltage industrial setups. Dry-type construction enhances safety and reduces cooling requirements. It targets facilities with CNC machines or heavy equipment that must be fed from a robust, isolated three-phase supply while accommodating different downstream voltages.
S20-M-50 50KVA Oil-immersed 3-Phase Transformer
Oil-immersed design: A robust 50 kVA three-phase transformer designed for industrial power distribution. Oil immersion provides superior heat handling for higher continuous load, with straightforward maintenance and a proven track record in heavy-duty environments. This option is suitable for facilities requiring heavy-duty duty-cycle performance and strong thermal management for sustained operation.
ACLDOYYV S20-M-50 50KVA Oil-immersed 3-Phase Transformer
Oil-immersed construction: Similar to BDPQKPDV variants, this 50 kVA unit emphasizes durable oil-filled cooling for sustained performance under heavy loads. It is aimed at installations that require dependable long-term operation with efficient thermal management, making it a suitable choice for manufacturing floors and large machine tools.
Three-Phase Isolation Transformer Buying Guide
Key considerations
- Voltage requirements: Identify the nominal line voltage (primary) and the required downstream voltage (secondary). Matching these minimizes conversion loss and equipment redesign.
- Phase configuration: Ensure a true three-phase design with a suitable kilovolt-ampere rating for continuous loads. Oversizing can add cost, undersizing risks overheating.
- Cooling method: Dry-type is common indoors; oil-immersed can handle higher heat but requires leak containment and ventilation considerations.
- Insulation class and wiring: H-level insulation and Dyn11 or equivalent wiring schemes indicate robust protection in industrial settings.
- Efficiency and noise: Copper windings generally improve efficiency and reduce noise compared with aluminum. Look for efficiency specs around 95% or higher when available.
- Physical footprint: Space constraints may favor compact dry-type designs or wall-mount options in crowded equipment rooms.
- Reliability and service life: Long service life and stable operation are critical for CNC machines and manufacturing lines with continuous duty cycles.
- Safety and compliance: Check certifications for electrical safety, fire resistance, and compliance with local electrical codes.
How to compare options
- Voltage range compatibility: Assess whether a single unit covers all downstream devices or if multiple transformers are needed.
- Isolation performance: Isolation transformers reduce electrical noise and protect sensitive equipment; confirm the isolation rating if available.
- Maintenance requirements: Dry-type units generally require less maintenance, while oil-immersed units need periodic checks for oil quality and temperature indicators.
- Installation environment: Consider indoor vs. outdoor placement, ventilation needs, and mounting options (floor, wall, or rack).
- Lifecycle costs: Evaluate initial cost against energy efficiency, potential cooling requirements, and maintenance frequency over the equipment’s life.