SolaHD E79H45S - SolaHD, Ventilated Distribution Transformer, DOE 10 Cfr P431 - DOE 2016 Compliant, Ul Listed E25872, 45 KVA, Primary Voltage 480 V, Secondary Voltage 380 V, 60 HZ, 3 Phase, Number Of Taps 7, Temperature Rating 150 Degrees C, Connection Delta-Wye, Winding Aluminium, Enclosure Nema Type 1
SolaHD

E79H45S

UPC: 783472149056


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Specification Sheet

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Overview

The SolaHD E79H45S is a ventilated distribution transformer designed for industrial power distribution systems requiring a 45 KVA rating. This three-phase unit operates at 60 Hz with a primary voltage of 480V and a secondary voltage of 380V, making it ideal for facilities transitioning between international voltage standards or integrating equipment with different voltage requirements. The transformer features a Delta-Wye connection configuration, which provides balanced three-phase power distribution and reduces harmonic distortion in the electrical system. Constructed with aluminum windings, the E79H45S offers a lightweight alternative to copper while maintaining high conductivity and thermal efficiency. The aluminum design reduces material costs without sacrificing performance, and its efficient heat dissipation allows for reliable operation under continuous heavy loads. The transformer includes seven tap positions for precise voltage regulation, enabling adjustment to compensate for voltage drops or fluctuations in the power supply. Housed in a NEMA Type 1 enclosure, the E79H45S provides protection against dust, dirt, and non-hazardous airborne contaminants, making it suitable for indoor installations in manufacturing plants, control rooms, and utility facilities. The enclosure meets basic environmental protection requirements while allowing for natural ventilation to dissipate heat generated during operation. Compliance with DOE 10 Cfr P431 and DOE 2016 energy efficiency standards ensures the transformer meets federal regulations for energy conservation in commercial and industrial applications. Additionally, the UL Listed E25872 certification confirms the unit has undergone rigorous safety testing, including dielectric strength, temperature rise, and short-circuit withstand tests. With a temperature rating of 150°C, the E79H45S can operate reliably in high-temperature environments without derating, reducing the need for additional cooling systems.
  • 45 KVA rating with 480V primary and 380V secondary voltage
  • Three-phase, 60Hz operation with Delta-Wye connection for balanced power distribution
  • Aluminum windings for lightweight construction with high thermal conductivity
  • Seven tap positions for precise voltage regulation and system flexibility
  • NEMA Type 1 enclosure for indoor protection against dust and debris

Specifications

Application
Any situation where the available voltage must be changed to accommodate the voltage required by the specific electrical circuit or connected equipment.
Brand Name
SolaHD
Cooling
AA
Efficiency
98.4 Percent
Enclosure
NEMA TYPE 1
Frequency Rating
60 HZ
Frequency Rating, Maximum
60 Hz
Frequency Rating, Minimum
60 Hz
Height
28 IN
Insulation Class
220 DEG C
KVA Rating
45 KVA;45 kVA
Length
23 IN
Mounting
FLOOR/WALL (UP TO 500LB MAX)
Mounting
Floor
Number Of Phases
3
Number Of Taps
7
Primary Voltage
480D V
Primary Voltage
0.48 kV
Secondary Voltage
0.38 kV
Secondary Voltage
380Y V
Special Features
DOE 10 CFR p431 - DOE 2016 Compliant
Standard
UL Listed E25872
Temperature Rating
150 Degrees C
Temperature Rating, Maximum
302 F
Temperature Rating, Maximum
150 C
Temperature Rating, Minimum
302 F
Temperature Rating, Minimum
150 C
Type
Ventilated Distribution Transformer
Type of Transformer
DOE 10 CFR p431 - DOE 2016 Compliant
Width
16 IN
Winding
ALUMINIUM
Package Dimensions (L x W x H)
31 IN x 29.25 IN x 53 IN
Package Dimensions (L x W x H)
78.74 cm x 74.295 cm x 134.62 cm
Package Weight (Imperial)
387.000 L
Package Weight (Metric)
175.543 kg
A - 15.0 kV bushing

015J0400AN

A - 15.0 kV bushing
O Plus C - 34.5 kV bushing

034Z3000AW

O Plus C - 34.5 kV bushing

Frequently Asked Questions

What types of SolaHD transformers are available?

SolaHD offers energy-efficient dry-type general purpose transformers, isolation type, in single and three phase configurations, ranging from 15 kVA to 500 kVA. Both indoor and outdoor models are available.

Are these SolaHD transformers energy efficient?

Yes, these transformers are energy efficient and compliant with DOE 2016 and NRCan 2019 standards, as applicable.

Can these transformers be used outdoors?

Yes, they are UL Listed/NEMA Type 3R for outdoor use when equipped with optional weather shields, which must be ordered separately.

What is the insulation system temperature rating?

The transformers feature a UL Class 220°C insulation system, designed for a 150°C temperature rise under full load.

What is the warranty period for these transformers?

These SolaHD transformers come with a 10-year limited warranty.

What accessories are available for these transformers?

Available accessories include electrostatic shields, wall mounting brackets, weather shields, stainless steel enclosures, and open core and coil designs. Copper wound designs are also optional.

What are the benefits of Enhanced Enclosures?

Enhanced Enclosures feature a lower center of gravity for easier forklift placement, replaceable panels, enhanced fasteners, and adequate wiring compartments.

How are wall mounting brackets rated?

Wall mounting brackets are available for transformers up to 75 kVA. WMB1151 has a 500 lb capacity, and WMB6375 has a 780 lb capacity.

Are wiring diagrams provided with the product?

Yes, a wiring diagram is located on the inside front cover of the panel enclosure.

What kVA sizes are available for Enhanced Enclosure models?

Enhanced Enclosure models (those beginning with EE) are available in 11 kVA to 112.5 kVA sizes.

Frequently Asked Questions about SolaHD

What certifications and standards do SolaHD products comply with?

SolaHD power supplies are UL 508 Listed for Industrial Control Equipment and comply with multiple international standards, including UL 60950, CUL/CSA-C22.2 No. 234-M90, and IECEx certifications. Our products meet EMC and Low Voltage Directives, with extensive hazardous location certifications including Class I Zone 2, ATEX, and IECEx, ensuring reliable performance in industrial environments.

What industries and applications are SolaHD products used for?

SolaHD products are used across a wide range of critical industrial applications, including factory automation, process control, machine control, material handling, building automation, and harsh environment installations. Key industries include manufacturing, process industries, semiconductor fabrication, packaging, conveying equipment, instrumentation, and environments requiring UL508 compliance such as water treatment facilities. The products are specifically designed for challenging industrial settings, with certifications for hazardous locations and extreme temperature ranges.

What technical support does SolaHD offer?

SolaHD offers comprehensive technical support through experienced sales representatives available worldwide. Our support includes expert consultation for selecting the right power quality solutions, with award-winning online tools to help customers make precise product selections. Technical support covers the entire range of our industrial power solutions, from service entrance protection to point-of-use equipment, ensuring customers can optimize their facility's power infrastructure.

What are the main product lines offered by SolaHD?

SolaHD offers a comprehensive range of industrial power quality solutions across five primary product lines: Power Supplies, Surge Protection Devices (SPDs), Transformers, Power Conditioning, and Uninterruptible Power Supplies (UPS). Key product series include SDN Power Supplies, STV/STFV Surge Protective Devices, Industrial Control Transformers, MCR Constant Voltage Conditioners, and SDU UPS systems designed for industrial automation, process control, and critical manufacturing environments.

What are the key features of SolaHD products?

SolaHD products offer comprehensive industrial power quality solutions that convert, clean, and maintain electric current throughout manufacturing facilities. Key features include noise and surge protection, voltage regulation, drive protection, and uninterruptible power supplies (UPS). Their product lines cover everything from service entrance to point-of-use, with compact DIN rail mountable options that provide flexible, space-saving power solutions for sensitive industrial equipment like PLCs, networks, and control systems.

What environmental ratings do SolaHD products have?

SolaHD products feature robust environmental ratings including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 classifications, as well as IP66 protection. These ratings ensure comprehensive protection against dust, water, and corrosion in both indoor and outdoor environments, with operating temperatures ranging from -40°C to 130°C.

What accessories are available for SolaHD products?

SolaHD offers a comprehensive range of accessories across multiple product lines, including surge protective devices (SPD), tracking filters, power supplies, UPS systems, and DIN rail mountable components. Key accessories include the STV100K Surge Protective Device, STFV Plus Series Tracking Filters, SDN and SCP Series Power Supplies, SDU Series UPS, and various DIN rail filters and converters that can be integrated into industrial control panels and power systems.

How are SolaHD products typically installed?

SolaHD products are typically installed on DIN rail mounting systems in industrial control panels, with multiple installation options including panel/wall mounting brackets. Most products feature easy-to-wire screw terminations, making them suitable for critical industrial applications like factory automation, PLCs, robotics, and computer-based control systems. The products are designed for flexible installation across various industrial environments, with wide operating temperature ranges from -20°C to +50°C and compact, rugged industrial designs.