Hammond Power DM020JJ - Drive isolation transformer, three-phase, 20 kVA, 460–460 Volts, copper windings.
Hammond Power

DM020JJ

UPC: 803423002817


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Overview

The Hammond Power DM020JJ is a robust three-phase drive isolation transformer designed for demanding industrial applications. With a substantial 20 kVA rating, this transformer is engineered to provide reliable voltage isolation for AC and DC variable speed drives, ensuring optimal performance and protection. It features a primary voltage rating of 460 Volts and a secondary voltage rating of 460 Volts, facilitating seamless integration within existing 460V systems. The transformer is constructed with high-quality copper windings, known for their excellent conductivity and durability, contributing to efficient power transfer and longevity. This unit operates within the 600V class, offering a significant margin for various industrial power requirements. The DM020JJ is manufactured in the USA, adhering to stringent quality standards. Its primary function is to isolate the drive from the power line, mitigating the effects of line notching and voltage transients that can damage sensitive drive components. By providing a dedicated, clean power source to the drive, it enhances operational stability and extends the lifespan of the variable speed drive system. This transformer is an essential component for applications requiring precise motor control and protection, common in manufacturing, automation, and process industries.
  • The separate primary and secondary windings provide electrical isolation between the incoming line and the SCR load.
  • The windings are designed to withstand overcurrent of 150% of the rated load for 60 seconds or 200% of the rated load for 30 seconds.
  • Drive Isolation Transformers are sized to match standard motor horsepower and voltage ratings. Standard sizes range from 5 to 600 HP in six standard voltages.
  • Designed for AC and DC Variable Speed Drives
  • Manufactured in the USA (SKU: DM020JJ)

Specifications

Application
Variable Speed Drives.
Cooling
Convection cooled
Enclosure
NH6-N3R - Indoor or Outdoor
Enclosure Colour
ANSI 61 Grey, UL50
Frequency
60 Hz
Frequency Rating
60 HZ
Height
28.75 in
KVA Rating
20 KVA
Length
25 in
Mounting
Floor or Wall mount
Mounting Method
Wall and Floor
Number Of Phases
3
Number Of Taps
ST-20 compliant
Phase
3PH
Primary Voltage
460 V
Secondary Voltage
460Y V
Sound Level dBA
Meets NEMA ST-20 standards
Special Features
Designed to withstand overcurrent of 150% of the rated load for 60 seconds or 200% of the rated load for 30 seconds. Comes standard in an indoor/outdoor enclosure with a coil mounted thermal warning switch.
Standard
CSA, UL
Temperature Rating
Typical 30 Average/ 40 Maximum Deg C
Temperature Rise
115 Deg C
Transformer Rating
20KVA
Type
Transformers > Drive Isolation
Wall Mounting
Yes
Warranty
10 year warranty
Weight
32 lbs./100ft
Width
23.9 in
Winding
Aluminum
Package Dimensions (L x W x H)
23.9 IN x 25 IN x 28.75 IN
Package Dimensions (L x W x H)
60.706 cm x 63.5 cm x 73.025 cm
Package Weight (Imperial)
225.000 L
Package Weight (Metric)
102.060 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 about Hammond Power

What certifications and standards do Hammond Power products comply with?

Hammond Power products are certified to UL (Underwriters Laboratories) and CSA (Canadian Standards Association) standards in North America. Our products meet rigorous safety and performance requirements, with many items classified as UL Listed Products or Recognized Components. We also comply with international certifications including China Compulsory Certification (CCC), C-Tick for Australian EMC requirements, and ANCE for Mexico.

What is Hammond Power's warranty policy?

Hammond Power provides a standard one-year warranty on all products, covering defects in workmanship and materials. Products will be repaired or replaced free of charge if found defective upon factory inspection. The warranty does not cover damage from improper handling, incorrect application, or faulty installation.

What industries and applications are Hammond Power products used for?

Hammond Power products are engineered for critical industrial and commercial applications across multiple sectors, including petrochemical, mining, construction, renewable energy, e-mobility, power storage, and microgrids. Their comprehensive product range of dry-type transformers, power quality solutions, and magnetic components enables electrical distribution and electrification in diverse industrial environments worldwide.

What are the main product lines offered by Hammond Power?

Hammond Power Solutions offers a comprehensive range of dry-type and liquid-filled transformers for industrial and commercial applications. Their primary product lines include power transformers for renewable energy, e-mobility, data centers, microgrids, and industrial settings. The company provides both standard and custom-designed transformer solutions that are critical to electrical distribution networks across multiple industries.

What are the key features of Hammond Power products?

Hammond Power products feature advanced dry-type and liquid-filled transformers engineered for diverse industrial applications, with capabilities spanning renewable energy, e-mobility, data centers, microgrids, and industrial/commercial sectors. Key features include high-performance electrical steel laminations, windings available in copper or aluminum, advanced insulation systems (VPI or Cast Resin), Basic Impulse Level ranges from 10 kV to 250 kV, and custom design capabilities with over 3,000 unique transformer designs engineered annually.

What environmental ratings do Hammond Power products have?

Hammond Power offers industrial enclosures with comprehensive environmental ratings, including UL/cUL 508A ratings of Type 1, 2, 3, 4, 4X, 12, and 13. Their products meet IEC 60529 IP66 standards, providing robust protection against dust, water ingress, and harsh environmental conditions. Specific ratings vary by product series, with options ranging from indoor Type 1 enclosures to outdoor-rated Type 4X enclosures suitable for challenging industrial environments.

What technical support does Hammond Power offer?

Hammond Power Solutions provides comprehensive technical support through multiple channels. Customers can access technical resources via phone support in Canada, the United States, Mexico, and internationally, with toll-free numbers and regional contact points. Their technical team offers personalized assistance for custom design inquiries, helping customers find standard transformer and power solutions or develop specialized electrical products for various industrial applications.

What communication protocols do Hammond Power products support?

Hammond Power products support multiple industrial communication protocols, including Modbus RTU, PROFIBUS DP, PROFINET, EtherNet/IP, and CANopen. These protocols enable flexible connectivity across industrial automation platforms, supporting various network topologies and high-speed data transmission for comprehensive industrial control and monitoring applications.

What accessories are available for Hammond Power products?

Hammond Power offers a comprehensive range of accessories for industrial electrical components, including HME Series handles with key locking and padlocking options, door stop kits, light kit mounting brackets, and standard hardware like mounting screws and washers. These accessories are designed to enhance functionality and installation flexibility across their product lines.

How are Hammond Power products typically installed?

Hammond Power transformers are typically chassis-mounted using precise mounting hole centers and dimensions specific to each product series. Installation involves selecting the appropriate primary voltage configuration, securing the transformer to a mounting surface using the specified mounting holes, and connecting terminals according to the product's schematic. Most Hammond Power transformers feature multiple terminal options like solder or quick-connect terminals, allowing flexible and straightforward installation in industrial control and power distribution applications.