RoMan Machine Transformers FOR SALE

IN-STOCK and Available Now from Weld Systems Integrators

RoMan machine transformers are water-cooled and ideal for press, seam, rocker arm, cross wire and other welding applications. Available in various frequencies and secondary voltages. Size and capability of our Machine Transformers can be designed to meet your application’s requirements

RoMan Machine Transformers Features:

  • KVA Range: 20 KVA – 500 KVA (rated at 50% duty cycle)
  • RWMA standard machine pad sizes and hole spacing
  • Primary Voltages:
    1. 480 Volts, 60Hz (7 – 1/4″ x 9 – 1/4″ and 7 – 3/4″ x 10 – 1/4″ only)
    2. 575 Volts, 60Hz
  • Fully encapsulated to ensure long life
  • Optional accessories:
    1. Available remotely mounted Switchgear / Tap Switch
    2. Over-temperature thermoswitches
RoMan Machine Transformer | Weld Systems Integrators
Machine Transformers: ML - MA Frame

Machine Transformers: ML – MA Frame

KVA RatingFrameSecondary Turns Ratio (TR)Tap SwitchModelRWMA Pad Size
Tap 1Tap 2Tap 3Tap4Tap5Tap6Tap7Tap8
TRVoltsTRVoltsTRVoltsTRVoltsTRVoltsTRVoltsTRVoltsTRVolts
100ML80:15.5074:15.9468:16.4762:17.0957:17.7152:18.4648:19.1644:110.00EndM446100ML1BMLX1
100ML80:15.5074:15.9468:16.4762:17.0957:17.7152:18.4648:19.1644:110.00EndM446100ML1BNLX2
100ML80:15.5074:15.9468:16.4762:17.0957:17.7152:18.4648:19.1644:110.00EndM446100ML1BOLX3
100ML80:15.5074:15.9468:16.4762:17.0957:17.7152:18.4648:19.1644:110.00SideM446100ML1FMLX1
100ML80:15.5074:15.9468:16.4762:17.0957:17.7152:18.4648:19.1644:110.00SideM446100ML1FNLX2
100ML80:15.5074:15.9468:16.4762:17.0957:17.7152:18.4648:19.1644:110.00SideM446100ML1FOLX3
125MA66:15.5060:17.3355:18.0050:18.8046:19.5642:110.4739:111.2836:112.20EndM446125MA1BMLX1
125MA66:15.5060:17.3355:18.0050:18.8046:19.5642:110.4739:111.2836:112.20EndM446125MA1BNLX2
125MA66:15.5060:17.3355:18.0050:18.8046:19.5642:110.4739:111.2836:112.20EndM446125MA1BOLX3
125MA66:15.5060:17.3355:18.0050:18.8046:19.5642:110.4739:111.2836:112.20SideM446125MA1FMLX1
125MA66:15.5060:17.3355:18.0050:18.8046:19.5642:110.4739:111.2836:112.20SideM446125MA1FNLX2
125MA66:15.5060:17.3355:18.0050:18.8046:19.5642:110.4739:111.2836:112.20SideM445125MA1FOLX3

* KVA Rating @ 50% Duty Cycle
* Drawings #R1471 and R1472 available on request

Machine Transformers: NB - NL Frame

Machine Transformers: NB – NL Frame

KVA RatingFrameSecondary Turns Ratio (TR)Tap SwitchModelRWMA Pad Size
Tap 1Tap 2Tap 3Tap4Tap5Tap6Tap7Tap8
TRVoltsTRVoltsTRVoltsTRVoltsTRVoltsTRVoltsTRVoltsTRVolts
50NB110:14.0096:14.5883:15.3073:16.0363:16.9855:17.90NANANANAEnd MountM44650NB1BMLX1
50NB110:14.0096:14.5883:15.3073:16.0363:16.9855:17.90NANANANAEnd MountM44650NB1BNLX2
50NB110:14.0096:14.5883:15.3073:16.0363:16.9855:17.90NANANANASide MountM44650NB1FMLX1
50NB110:14.0096:14.5883:15.3073:16.0363:16.9855:17.90NANANANASide MountM44650NB1FNLX2
50NL119:13.6098:14.4881:15.4369:16.3761:17.2154:18.1449:18.9744:110.00End MountM44650NL1BMLX1
50NL119:13.6098:14.4881:15.4369:16.3761:17.2154:18.1449:18.9744:110.00End MountM44650NL1BNLX2
50NL119:13.6098:14.4881:15.4369:16.3761:17.2154:18.1449:18.9744:110.00Side MountM44650NL1FMLX1
50NL119:13.6098:14.4881:15.4369:16.3761:17.2154:18.1449:18.9744:110.00Side MountM44650NL1FNLX2
75NL77:15.7071:16.1965:16.7659:17.4554:18.1450:18.8047:19.3644:110.00End MountM44675NL1BMLX1
75NL77:15.7071:16.1965:16.7659:17.4554:18.1450:18.8047:19.3644:110.00End MountM44675NL1BNLX2
75NL77:15.7071:16.1965:16.7659:17.4554:18.1450:18.8047:19.3644:110.00Side MountM44675NL1FMLX1
75NL77:15.7071:16.1965:16.7659:17.4554:18.1450:18.8047:19.3644:110.00Side MountM44675NL1FNLX2
100NL65:16.8060:17.3355:18.0051:18.6247:19.3644:110.00NANANANAEnd MountM446100NL1BMLX1
100NL65:16.8060:17.3355:18.0051:18.6247:19.3644:110.00NANANANAEnd MountM446100NL1BNLX2
100NL65:16.8060:17.3355:18.0051:18.6247:19.3644:110.00NANANANASide MountM446100NL1FMLX1
100NL65:16.8060:17.3355:18.0051:18.6247:19.3644:110.00NANANANASide MountM446100NL1FNLX2
120NA60:17.3356:17.8552:008.4648:19.1645:19.7742:110.4739:111.2836:112.22End MountM446120NA1BMLX1
120NA60:17.3356:17.8552:008.4648:19.1645:19.7742:110.4739:111.2836:112.22End MountM446120NA1BNLX2
120NA60:17.3356:17.8552:008.4648:19.1645:19.7742:110.4739:111.2836:112.22Side MountM446120NA1FMLX1
120NA60:17.3356:17.8552:008.4648:19.1645:19.7742:110.4739:111.2836:112.22Side MountM446120NA1FNLX2

* KVA Rating @ 50% Duty Cycle
* Drawings #R1471 and R1472 available on request

Machine Transformers: PL - PA Frame

Machine Transformers: PL – PA Frame

150 – 200 KVA

12 – 1/2″ x 13 – 3/8″

KVA RatingFrameSecondary Turns RatioTap SwitchModelRWMA Pad SizeApprox. Weight (lbs.)
Tap 1Tap 2Tap 3Tap4Tap5Tap6Tap7Tap8
TRVTRVTRVTRVTRVTRVTRVTRV
150PL69:16.4063:16.9857:17.7153:18.3049:18.9745:19.7742:110.4740:111.00End MountM446150PL1BNLX2567
150PL69:16.4063:16.9857:17.7153:18.3049:18.9745:19.7742:110.4740:111.00End MountM446150PL1BOLX3572
150PL69:16.4063:16.9857:17.7153:18.3049:18.9745:19.7742:110.4740:111.00Side MountM446150PL1FNLX2577
150PL69:16.4063:16.9857:17.7153:18.3049:18.9745:19.7742:110.4740:111.00Side MountM446150PL1FOLX3592
200PL59:17.4555:18.0051:18.6248:19.1645:19.7743:110.2341:110.7339:111.28End MountM446200PL1BNLX2567
200PL59:17.4555:18.0051:18.6248:19.1645:19.7743:110.2341:110.7339:111.28End MountM446200PL1BOLX3572
200PL59:17.4555:18.0051:18.6248:19.1645:19.7743:110.2341:110.7339:111.28Side MountM446200PL1FNLX2587
200PL59:17.4555:18.0051:18.6248:19.1645:19.7743:110.2341:110.7339:111.28Side MountM446200PL1FOLX3592
200PA57:17.7153:18.3049:18.9745:19.7742:110.4739:111.2836:112.2234:112.94End MountM446200PA1BNLX2671
200PA57:17.7153:18.3049:18.9745:19.7742:110.4739:111.2836:112.2234:112.94End MountM446200PA1BOLX3676
200PA57:17.7153:18.3049:18.9745:19.7742:110.4739:111.2836:112.2234:112.94Side MountM446200PA1FNLX2691
200PA57:17.7153:18.3049:18.9745:19.7742:110.4739:111.2836:112.2234:112.94Side MountM446200PA1FOLX3696

* KVA Rating @ 50% Duty Cycle
* Drawings #R1093 and R1305 available on request

Machine Transformers: V - VA - U - UA Frame

Machine Transformers: V – VA – U – UA Frame

250 – 500 KVA

13 – 3/8″ x 20 – 3/4″ and 16 – 1/2″ x 20 – 3/4″

KVA RatingFrameSecondary TRTap SwitchModelRWMA Pad SizeApprox Weight Lbs
Tap 1Tap 2Tap 3Tap4Tap5Tap6Tap7Tap8
TRVTRVTRVTRVTRVTRVTRVTRV
250V58:17.6053:18.3049:18.9745:19.7741:110.7338:111.5735:112.5732:113.80End MountM446250V1BOLX31005
300VA51:18.6247:19.3643:110.2339:111.2836:112.2233:113.3330:114.6628115.71End MountM446300VA1BOLX31115
300VA51:18.6247:19.3643:110.2339:111.2836:112.2233:113.3330:114.6628:115.71End MountM446300VA1BPLX41130
400U50:18.8046:19.5642:110.4738:111.5734:112.9431:114.1928:115.7126:116.92End MountM446400U1BPLX41499
500UA45:19.8031:113.1937:111.8934:112.9431:114.1928:115.7126:116.9224:118.30End MountM446500UA1BPLX41579

* KVA Rating @ 50% Duty Cycle
* Drawings #R1286 and R1285 available on request

Contact Weld Systems Integrators

Weld Systems Integrators (WSI) is your complete source for standard and custom resistance welders, consumables, spare and replacement parts and value added services. We offer WORLDWIDE shipping from our Warrensville Heights, OH location.

CONTACT Weld Systems Integrators, or REQUEST A QUOTE on standard IN-STOCK inventory or fully custom welding equipment. To speak with a WSI team member, please give us a call at 844-WSI-WELD or +1-216-475-5629.

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