Single Phase Transformers

Single Phase .50 kVA - 25 kVA
Series 85 ISO-Shield: Epoxy Encapsulated/Ventilated

• UL Listed, File E3210, .250 - 10 kVA.  
• UL Listed, File E78234, 15 - 25 kVA.
• CUL Listed through UL File E3210.
• CE and TUV Rheinland Certified Units are also available.
• Electrostatic shield between primary and secondary windings provides cleaner output voltage and helps to reduce spikes and transients.
• Epoxy-silica encapsulated core and coil provides a transformer particularly well suited to harsh commercial and industrial applications.
• Copper windings and copper lead wire terminations used throughout.
• UL Class 180° insulation system with 115°C temperature rise at maximum ambient of 40°C.
• NEMA-3R, wall mount enclosure suitable for indoor or outdoor use. May be used in banks of 2 or 3 units for standard three phase voltages and non-standard, open delta autotransformer applications.
• Multiple knockouts provide convenient conduit entry and exit locations through the front and bottom access wiring compartment covers.
• Ground studs provided for bonding compatibility with both metallic and nonmetallic conduit.
• Other sub-categories include general purpose, hospital isolation, hazardous location, signaling, control, and low voltage transformers also available.
• Nonstandard designs are available by consulting the facotry or your Dongan representative.

Three Phase Transformers

Three Phase 15 kVA- 300 kVA
Series 63 ISO-Shield: Epoxy Encapsulated/Ventilated

• UL 506 Listed Standard, File E78234.  
• CSA Standard Certified, File LR 560.
• CE and TUV Rheinland Certified Units are also available.
• Electrostatic shield between primary and secondary windings provides cleaner output voltage and helps to reduce spikes and transients.
• Aluminum windings connect to bus bar style termination equipped with NEMA standard holes for compression style or ring terminals.
• UL CLass 220°C insulation system with 150°C temperature rise at full load and a maximum ambient 0f 40°C.
• NEMA-3R, ventilated, cabinet style, floor mount enclosure suitable for indoor or outdoor use. No extra rainshields required for outdoor use.
• Vibration dampening pads provide quiet operation.
• Wall Mounting brackets are available in sizes up to 75 kVA.
• Ground studs provided for bonding compatibility with both metallic and nonmetallic conduit.
• Other sub-categories include general purpose, motor drive isolation, K-Factor for harmonic loads, and autotransformersw voltage transformers also available.
• Core and coil and nonstandard designs are available by consulting the factory or your  Dongan representative.

Buck - Boost Transformers

Industrial Control Transformers

Industrial Control .050 kVA- 5.0 kVA
Series 50 Encapsulated/Ventilated

• UL Listed, File E3210
• CSA Listed thru UL, File E3210All
• CE and TUV Rheinland Certified Units are also available.
• Copper windings
• All designs are rated 50/60 Hertz.
• Primary fuse blocks and secondary fuse holders are available and are easily installed. Nonstandard designs are available by consulting the factory or your Dongan Representative.
• Screw Terminal is standard for all Series 50 Unit
• Options for finger-safe fuse blocks for CE requirements.

Voltage Combinations

Industrial Ignition Transformers

Industrial Ignition Transformer
Sold State Igniter for Fuel Oil and Gas Burner Ignition

• UL Recognized File E209963,
• CUL Recognized E209963
• Dongan Ignition transformers are used in a wide variety of commercial and industrial heating applications. Their uses include commercial heat treating installations, bakeries, grain dryers, and industrial ovens.
• Primary voltages include 110, 120, 208, 220, 240, and 480.
• Secondary voltages include 5,000, 6,000, 7,500, 8,500, and 10,000.
• 10,000 volt models come in either an end grounded 10,000 volt configuration or a twin 5,000 volt version.
• Epoxy filled variations complete the line, providing solutions for higher ambient temperature applications.
• LFI Series is available for harsh conditions found with ozone generation installations.
• Solid State Ignitors are also available.

Transformer Lighting Disconnects

Transformer Lighting Disconnects
Lighting Disconnects in NEMA Enclosures

• Dongan Electric Manufacturing Company offers a broad selection of Transformer Lighting Disconnects. These products are the most advanced series of disconnects available in the market today and most important they have the approvals and certifications needed to compete and ship worldwide. This product is a safety product and have in interlock on the rotary cam switch that prevents the unit from being opened while it is powered up.
• Shielded transformers
• Finger safe terminals on all units
• 3 position padlockable switch
• Green "On" pilot light  provided on most units
• Dedicated physical earth terminal
• 15kAIC rating (higher ratings up to 200kAIC available)
• Duplex receptacle provided as standard on many units

Custom Designed Transformers

Custom Designed Transformers
OEM, ODM, MRO, EPC Runs

• Small batch and large run requirements welcome.
• Agency approvals allowing most transformers to be UL arrpoved, CSA Certified, and/or TUV Rheinland and CE certification.
• Prompt delivery of 2-3 weeks and less on demand. (Usually 10 business days)
• CAD drawings for dimension matching.
• Consult factory for desired voltage combinations and kVA sizes not listed.
• Fill out the specification guide for your prompt quotation.