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Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance

Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance

Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance
Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance
Categories Three Phase Pad Mounted Transformer
Secondary voltage: 120–600 V (e.g., 208Y/120, 480Y/277, 600Y/347)
Model Number: ZGS
Supply Ability: 20,000 sets/year
Primary voltage: up to 34.5 kV, BIL up to 200 kV
Payment Terms: L/C,D/A,D/P,T/T,Western Union
Rating Capacity: 75–5000 kVA
Delivery Time: 45 work days
Certification: ANSI/IEEE
MOQ: 1
Packaging Details: Wooden Case
Brand Name: HENTG POWER
Windings: Cu or Al
Tap changer: 5‑step no‑load
Place of Origin: Jiangsu, China
Cooling: ONAN/ONAF/KNAN
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Company Info.
Hunan Hentg Power Electric Technology Co., Ltd.
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Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance

Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance
Product Overview

This three-phase pad-mounted transformer is designed for outdoor underground distribution. Available in ratings from 75 to 5000 kVA with primary voltage up to 34.5 kV. Fully ANSI/IEEE compliant with oil-immersed cooling and compact pad-mounted enclosure (NEMA 3R) requiring no extra fencing. Safe, durable, and easy to maintain for residential, commercial, industrial, and renewable energy applications.

Compact three phase pad mounted transformer installation
Key Features
  • Low-profile, space-saving design ideal for tight urban sites and landscape integration
  • Compartmentalized construction with separate HV/LV sections, dead-front option, and tamper-proof locks
  • ANSI/IEEE, NEMA, DOE compliant with UL availability for smooth utility acceptance
  • 65°C rise, premium core, copper/aluminum windings for low losses and 30+ year lifespan
  • Flexible configuration including radial or loop feed, mineral oil or FR3, and custom voltages and accessories
Technical Specifications
Technical diagram of three phase pad mounted transformer
SpecificationDetails
Rating75-5000 kVA
Primary VoltageUp to 34.5 kV, BIL up to 200 kV
Secondary Voltage120-600 V (e.g., 208Y/120, 480Y/277, 600Y/347)
CoolingONAN/ONAF/KNAN, 65°C rise
Core & WindingsGrain-oriented silicon steel core; copper or aluminum windings
Fluid OptionsMineral oil or biodegradable FR3 ester
Feed ConfigurationRadial (standard) or loop (6 HV bushings)
Tap Changer5-step no-load
EnclosureNEMA 3R, lockable, weatherproof, corrosion-resistant coating available
Optional FeaturesBayonet fuses, load-break switches, surge arresters, electrostatic shielding, K-factor design
Application Solutions
  • Residential Subdivisions: Low noise (<65 dB), tamper-proof, underground feed with no overhead lines; radial feed for cost efficiency
  • Commercial Complexes: Loop feed for uninterrupted power in malls, hotels, offices; optional K-factor for harmonic loads; high overload capacity
  • Municipal Infrastructure: Corrosion-resistant coating for harsh environments; dead-front for public safety; compact footprint for street lighting and public buildings
  • Renewable Energy: Step-up configurations up to 34.5 kV for solar, wind, BESS; FR3 fluid for eco-sensitive sites; remote monitoring ready; tap changer for voltage regulation
Frequently Asked Questions
What kVA rating do I need?

Calculate total load plus 20% growth. General guide: 75-500 kVA for residential (10-50 homes), 500-2500 kVA for commercial, 1000-5000 kVA for industrial or solar farms. Free load analysis available.

Radial vs loop feed - which is better?

Radial is simpler and lower cost. Loop provides dual-source redundancy, allowing maintenance without outage - recommended for critical loads like hospitals, data centers, and malls.

What is the lifespan and maintenance?

30-40 years with routine oil testing, visual inspections, and gauge verification. Annual dielectric testing is recommended.

Are they safe for public areas?

Yes. Lockable enclosures, separate HV/LV compartments, dead-front options, and NEMA 3R weatherproofing meet ANSI safety standards.

Can you customize voltages, fluid, and accessories?

Yes. Any primary up to 34.5 kV, secondary 120-600 V, mineral oil or FR3, radial/loop, and full accessory range (fuses, switches, arresters, shielding, K-factor).

What standards are met?

ANSI C57.12.00/34/90, IEEE, NEMA, DOE, CSA (optional). UL available. Complete factory test reports provided.

Three phase pad mounted transformer in operational environment

Contact our team today for a customized quote and technical engineering support - fast turnaround, global delivery.

Quality Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance for sale

Compact Three Phase Pad Mounted Transformer Designed to Optimize Space and Deliver Consistent Power Distribution Performance

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