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Hammond Power DM075NN - Drive isolation transformer, three-phase, 75 kVA, 575–575 Volts, aluminum windings.

Hammond Power DM075NN Drive isolation transformer, three-phase, 75 kVA, 575–575 Volts, aluminum windings.

UPC: 803423003593


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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 DM075NN is a 75 kVA, three-phase drive isolation transformer designed for variable frequency drives (VFDs) and motor control systems. This transformer features aluminum windings for efficient power transfer and operates at a 1:1 voltage ratio with a primary and secondary voltage of 575V. It is engineered to withstand harmonics and provide voltage isolation, protecting sensitive drive components from line disturbances. The DM075NN is a ventilated, dry-type transformer with convection air cooling, suitable for both AC and DC variable speed drives. It includes three coils and a single core, with primary side taps meeting or exceeding NEMA standards. The transformer is rated for 150% overload for 60 seconds or 200% overload for 30 seconds, once every hour, ensuring reliable operation under demanding conditions. Designed for industrial applications, this transformer is a critical component for systems requiring clean and stable power.
  • 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.
  • Designed to withstand harmonics and protect sensitive drive components
  • Ventilated, dry-type with convection air cooling

Specifications

Application
Variable Speed Drives.
Connection Type
Delta-Wye
Cooling
Convection cooled
Enclosure
NH3-N3R - Indoor or Outdoor
Enclosure Colour
ANSI 61 Grey, UL50
Frequency
60 Hz
Frequency Rating
60 HZ
Height
38 in
Height
965.2 mm
KVA Rating
75 KVA
Length
21 in
Length
533.4 mm
Material
Aluminum
Mounting
Floor Mount
Mounting Method
Wall and Floor
Number Of Phases
3
Number Of Taps
ST-20 compliant
Phase
3PH
Poles
3
Poles
3P
Primary Voltage
575 V
Secondary Voltage
575Y V
Secondary Voltage
480 V
Series
DM
Size
75 kVA
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
75kVA
Type
Transformers > Drive Isolation
Voltage Rating
575 V
Voltage Rating
575 VAC
Voltage Rating
600V Class
Wall Mounting
Yes
Warranty
10 year warranty
Weight
32 lbs./100ft
Width
26 in
Width
660.4 mm
Winding
Aluminum
Package Dimensions (L x W x H)
26 IN x 25 IN x 38 IN
Package Dimensions (L x W x H)
66.04 cm x 63.5 cm x 96.52 cm
Package Weight (Imperial)
550.000 L
Package Weight (Metric)
249.480 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 transformers utilize a uniform 220°C insulation system.

What is the typical temperature rise for these transformers?

The typical temperature rise is 150°C, with options for 80°C, 115°C, or 150°C rise.

What enclosure types are available for the transformers?

Standard is a Type 3R enclosure, with optional Type 4, 4X (stainless steel), and 12 available.

What is the frequency rating for these transformers?

The transformers are rated for a frequency of 60 Hz.

What is the typical impedance of these transformers?

The typical impedance for these transformers is between 3% to 6%.

Are these transformers UL Listed and CSA Certified?

Yes, all units are UL Listed under File E112313 and CSA Certified under File LR3902.

What conductor materials are used in these transformers?

The transformers can be manufactured with either copper or aluminum conductors.

What is the enclosure finish for the transformers?

The standard enclosure finish is ANSI 61 Grey, compliant with UL50.

Do these transformers have a neutral terminal?

Yes, a neutral terminal is provided for field connection on applicable units.

Are conduit knock-outs included?

Standard on all units, except for stainless steel enclosures which do not have knock-outs.

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.