Authorized Hammond Power Distributor
Hammond Power DM220NJ - Drive isolation transformer, three-phase, 220 kVA, 575–460 Volts, aluminum windings.

Hammond Power DM220NJ Drive isolation transformer, three-phase, 220 kVA, 575–460 Volts, aluminum windings.

UPC: 803423004170


Documents & Media
BrochureTechnical BulletinInstallation InstructionsSpecification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Hammond Power DM220NJ is a robust three-phase drive isolation transformer designed to meet the rugged demands of AC and DC variable speed drives. With a 220 kVA rating and 600V class insulation, this transformer provides reliable voltage transformation between 575V delta primary and 460V wye secondary voltages. Built with aluminum windings for efficient heat dissipation and long-term durability, the DM220NJ ensures stable power delivery while protecting sensitive drive systems from voltage spikes and harmonics. Its compact NH4 case style measures 32.00" (W) x 29.50" (D) x 41.00" (H) and weighs 1,450 lbs, making it suitable for industrial installations requiring floor mounting. The transformer is engineered for compatibility with standard motor horsepower and voltage ratings, offering a practical solution for VFD systems and converters where phase angle and voltage distortion must be minimized. This drive isolation transformer is specifically rated at 220 kVA, with a primary voltage of 575V and a secondary voltage of 460V. The construction features aluminum windings, contributing to its overall efficiency and longevity in demanding industrial environments. Distributed by Gross Automation for seamless procurement and support.
  • 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.
  • NH4 case style: 32.00" x 29.50" x 41.00" (WxDxH), 1,450 lbs
  • Designed for AC/DC variable speed drives and VFD systems

Specifications

Application
Variable Speed Drives.
Connection Type
575D PV / 460Y SV
Cooling
Convection cooled
Enclosure
NH4-N3R - Indoor or Outdoor
Enclosure Colour
ANSI 61 Grey, UL50
Frequency
60 Hz
Frequency Rating
60 HZ
Height
41 in
Height
1041.4 mm
KVA Rating
220 KVA
Length
29.5 in
Length
749.3 mm
Length
25.5 in
Mounting
Floor Mount
Mounting Method
Floor
Number Of Phases
3
Number Of Taps
ST-20 compliant
Phase
3PH
Poles
3
Primary Voltage
575 V
Secondary Voltage
460Y V
Secondary Voltage
575
Series
DM
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
220KVA
Type
Transformers > Drive Isolation
Voltage Rating
600V Class
Wall Mounting
No
Warranty
10 year warranty
Weight
32 lbs./100ft
Width
32 in
Width
812.8 mm
Winding
Aluminum
Package Dimensions (L x W x H)
32 IN x 29.5 IN x 41 IN
Package Dimensions (L x W x H)
81.28 cm x 74.93 cm x 104.14 cm
Package Weight (Imperial)
1150.000 L
Package Weight (Metric)
521.640 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 is the insulation system temperature rating?

The insulation system has a rating of 220°C, with options for 80°C, 115°C, or 150°C temperature rise.

What enclosure types are available for this transformer?

Standard is a Type 3R enclosure suitable for indoor/outdoor use. Optional types 4, 4X (stainless steel), and 12 are also available.

What are the UL and CSA certification file numbers?

The UL file number is E112313 and the CSA file number is LR3902.

What is the frequency rating for these transformers?

These transformers are rated for a frequency of 60 Hz.

What conductor materials are used in the windings?

The transformers are precision wound using either copper or aluminum conductors.

Can these transformers be used for indoor and outdoor applications?

Yes, the standard Type 3R enclosure is suitable for both indoor and outdoor applications.

What does the 'S' suffix indicate in the catalog number?

For shielded units, the suffix 'S' is added to the catalog number (e.g., DM075BKS).

What are the mounting options for units up to 51kVA?

Units up to 51kVA feature integral floor and wall mounting brackets for faster installation.

Does the transformer have a thermostat?

Yes, a thermostat is standard on all units.

Are there conduit knock-outs available?

Conduit knock-outs are standard on all units, except for stainless steel enclosures.

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.