EnglishMeltingBoostingWater-CooledTransformers

MELTING AND BOOSTING WATER-COOLED TRANSFORMERS

THE POWER TO TRANSFORM ™ RoMan Manufacturing ® is one of the world’s leading designers and manufacturers of AC water-cooled transformers and related specialty products. As a manufacturer of high-current, continuous operation transformers, we combine unparalleled knowledge and expertise with innovative technology, to deliver ready to use products to leading companies worldwide.

STANDARD AND CUSTOM MAGNETICS

STEP-UP AND STEP-DOWN UNITS Ideal for optimizing the melting and boosting of glass, RoMan step-up and step-down, interphase and multi-pulse units are available in three phase primary and single phase primary and secondary.

COPPER-WOUND UNITS Our copper wound units feature integrated center tap, and star or bridge rectifiers, a frequency range of 4 to 2000 Hz, with a primary and secondary voltage of 1 to 1500 volts, and thermal ratings of 1 kVA to 15 MVA. In addition, our units fully integrate with SCRs, IGBTs and saturable reactors.

ACCESSORIES Thermocouple and thermo-switch integrated monitoring are available, as are other accessories such as: PT’s, CT’s—with and without burden resistors—enclosures, flow switches, rogowski coils, and many others.

COMMON DELTA & WYE CONNECTIONS

DELTA-WYE

WYE-DELTA

SCR ON EACH SECONDARY

DELTA-DELTA

WYE-WYE

SCR OUTSIDE THE DELTA ON PRIMARY

COMMON SCOTT-T CONNECTIONS

SCOTT-T

SCR INSIDE THE DELTA ON PRIMARY

SCOTT-T

SCR ON EACH SECONDARY

SCOTT-T

SCR OUTSIDE THE DELTA ON PRIMARY

Customer: ________________________________ Project Number: ___________________________

ROMAN TRANSFORMER APPLICATION SHEET

Download PDF at romanmfg.com/appform

MAIN INFORMATION Primary Voltage(s): 220 230 240 380 400 415 420 440 460 480 575 Other: ____________ Variance Taps: _____________________________________________________________________________________ _ Example: +/- 5% or 10% Frequency: 50 Hz 60 Hz 50/60 HZ Other: ____________ Secondary Voltage(s) (Please list all): ______________________________________________________________________________________ _ Number of Taps: _________________________________________________________________________________________________________ Tap Location: Primary Side Secondary Side Special configuration: _ ____________________________________________________ Phase: Single Phase Primary Three Phase Primary Other: _ ___________________________________________________________ Multi Phase Primary Configuration: Three Phase Delta Wye Other: _ ____________________________________________________ Secondary Configuration: Delta Wye Scott-T Other:_______________________________________________________________ Mounting and Termination: Metric thread Imperial thread Transformer Type: Isolation Auto Other: ____________________________________________________________________________ KVA: ___________________________________________________________________________________________________________________ KVA Over Range: ________________________________ Constant Power (KVA) Constant Secondary Current over Secondary Voltage Range Certification: CE UL Recognized CSA UL Certified Other:_ _____________________________________________________ Core Rating: ______________________________________________________________________________________________ Tesla or kGauss Any Specific Testing Required: Yes No If yes, what: _____________________________________________________________________________________ Example: Hi Pot, accessories etc. Size constraints, please describe: _____________________________________________________________________________ _____________ Water or Air Cooled: Water Cooled Air Cooled

ACCESSORY INFORMATION Center Tap on Primary: Yes No Center Tap on Secondary: Yes No

Voltage Meter: Yes No Ammeter: Yes No Enclosure: Yes No If yes, what type: _____________________________________________ Example: Primary connections, secondary connections, whole unit If whole unit, what rating:______________________________________ Example: IP21, NEMA 1 Primary Connection: __________________________________________ Example: Studs, lugs and terminals Secondary Connection:________________________________ _______ Example: Studs, lugs and terminals Secondary Components: ______________________________________ Example: Cables, shunts, bus work (RoMan’s Non-Ferrous Foundry) Mounting: __________________________________________________ Example: Frame, hanger, lifting eyes, etc. Breaker on Transformer: Yes No Specs of Breaker: __________________________________ Specify Breaker Supplied: Yes No Secondary Voltage Sensing Wires: Yes No If yes, what type: _____________________________________ _______ Fused (at what amperage) or not fused PT on Secondary Sensing Wires: Yes No If yes, what range: ____________________________________________ Example: 120:10

CT on Secondary with Burden Resistor: Yes No CT on Secondary without Burden Resistor: Yes No If CT what range: _______________________________________ _____ Example: XXX:1, XXX:5 PT on Primary: Yes No If yes, what range: ____________________________________________ Example: 480:120 PT on Secondary: Yes No If yes, what range: ____________________________________________ Example: 120:10 Thermoswitch: Yes No Thermocouple: Yes No If yes, what type: _____________________________________________ Example: J type, K type Water Connections:___________________________________________ Example: Individual circuits or manifold Flow Switch: Yes No Flow Monitor: Yes No If yes, what type: _____________________________________________ Example: Visual, Digital

For more information

Grand Rapids, MI | 616.530.8641 | romanmfg.com

5-2017

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