45kva Three Phase Dry Type Transformer Distribution Low Voltage Multi-Tap 400v To 208v Mechanical Terminals Nema 3r Electrical Enclosure

30kva Three Phase Dry Type Transformer Distribution Low Voltage Multi-Tap 400v To 208v Mechanical Terminals Nema 3r Electrical Enclosure

Overview

The SG-30KVA Three-phase Dry-type Transformer is a reliable, compact, and efficient power transformer designed for commercial and industrial applications. Built with aluminum windings and an air-cooled design, this transformer provides stable three-phase power conversion with excellent electrical insulation and safety performance. It is optimized for indoor installations where fire safety, low maintenance, and high reliability are required.

Key Specifications

• Model: SG-30KVA
• Name: Three-phase Dry-type Transformer
• Rated Power: 45 KVA
• Phase: Three
• Frequency: 50/60 Hz
• Winding Material: Aluminum
• Cooling Method: Air cooling (dry-type)
• Insulation Class: Class C
• Temperature Rise: < 150°C
• Electrical Ratings
• Input (Primary) Voltage: 400Y/231 V
• Tap changer configuration: 2 × 2.5% (FCAN), 4 × 2.5% (FCBN)
• Input (Primary) Current: 43.3 A
• Output (Secondary) Voltage: 208Y/120 V
• Output (Secondary) Current: 83.2 A
• Protection, Testing & Insulation
• Withstand Voltage Test (60 seconds):
• Primary to Secondary: 2500 V / 60 s
• Primary to Grounding: 2500 V / 60 s
• Secondary to Grounding: 2500 V / 60 s
• Insulation Resistance:
• Primary to Secondary: > 100 MΩ
• Primary to Grounding: > 100 MΩ
• Secondary to Grounding: > 100 MΩ
• Induced Withstand Voltage: 125 Hz / double voltage / 1 min (as specified)
• Grounding Resistance: withstands 25 A with grounding resistance < 100 mΩ

Technical drawings

Features & Benefits

• Safe and Fire-resistant: Dry-type construction eliminates oil, reducing fire risk and environmental hazards.
• High Insulation & Dielectric Strength: Tested for high withstand voltage and high insulation resistance to ensure long-term reliability.
• Tap Changer Flexibility: Multiple taps (2×2.5% and 4×2.5%) allow for voltage adjustment to compensate for system variations.
• Low Maintenance: Air cooling and aluminum windings reduce maintenance requirements and operating costs.
• Wide Frequency Compatibility: Supports both 50 Hz and 60 Hz systems for global applicability.

Typical Applications

• Commercial buildings and office complexes
• Industrial plants and manufacturing facilities
• Data centers and telecommunications sites
• Hospitals and educational institutions
• Any indoor installations requiring dependable, low-maintenance three-phase power transformation

Specification

Production process

FAQ

1. Q: Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.

2. Q: What is the lead time?

A: Sample time 3-7 days, we usually ship by DHL, UPS, FedEx,etc. Mass production time 7-25 days.

3. Q: How long is the warranty?

A: 24 monthes from B/L. If there are any accessory problems,just provide the photos of damaged accessory,then we will provide free service. According to the number of products,we will provide easily damaged accessories for free. we also can provide technical support if you need.

4. Q: Is OEM/ODM available?

A: Yes,it is! We are manufacturer with our own R&D team, we can customize products according to customer's drawing or requirements.

Customized services:

a. Customized color and special function.

b. Customized box.

c. Print customer's logo(MOQ:≥10pcs).

d. Your other ideas about product, we can help you design and put them into production. The above customized services must be confirmed before production.

5. Q: How to control the products quality?

A: Our company owns the core technology ,all kinds of products hold CE certificate. We have professional engineers. Workers are strictly required to make products according to the drawings. Each process has technical instructors.The QC supervisors will regularly inspect the production. We will do products performance tests during production, and comprehensive quality tests when the products is completed.

WINLEY is located in Xiamen, China. We are specialized in manufacturing all kinds of transformers, voltage stabilizers, voltage regulators, etc. The products are widely used in industrial machinery, new energy, power generation, power supply, coal, metallurgy, petroleum, chemical, construction, port, airport, railway transportation, urban infrastructure, and other areas.

With more than 17 years experience, WINLEY always adhere to the route of "Integrity makes brand,quality wins the market"! We have a professional R&D team, a quality control team, scientific production management system and comprehensive customer service system.

WINLEY holds ISO 9001:2015 quality management system certification, All products have approved by CE certification, we can also apply for UL(Authorized by partner), SASO, SONCAP, etc. according to customer requirements.

WINLEY products are sold to Europe, North & South America, Oceania, Asia and Africa, more than 100 countries and regions in the world are using WINLEY products. Products’ quality and technical service are recognized by all customers around the world, and we have cooperative distributors in some countries.

And we will continue to carry forward the integrity of compliance, scientific and technological innovation, win-win cooperation spirit, provide quality products and comprehensive service to all partners, and work hard for the development of the world’s green electrical power.