Size 3.5 MFDC TDC-7224 & TDC-7660

RoMan’s lightweight MFDC water-cooled transformers are ideal for robotic and fixture spot welding applications. With over-temperature thermoswitch protection, it is also available in 500 and 800 Volt,1,000 and 1800 Hz.

• 650 Volt
• 170 KVA @ 50% duty cycle
• Secondary no load DC voltage of 13.0 volts
• Over-temperature thermoswitch protection
• Secondary pick-up coil
• Fully epoxy encapsulated to ensure long life
• Water-cooled, 7.5 L.P.M. (2 G.P.M.) minimum @ 30°C max inlet temperature
• TDC-7224, 1,000 Hz
    – Weight: 27 kg (60 lbs.)
• TDC-7660, 1,800 Hz
    – Weight: 24 kg (53 lbs.)
• Also available in 500 & 800 Volt, 1,000 & 1,800 Hz

MFDC / Inverter Power Supplies

* To request a quote on a single MFDC / Inverter, click the "Model Number" link.
** To request a quote on multiple MFDC / Inverter, check the "GET QUOTE" box(s) and press the Quote Request button.

MFDC / Inverter Power Supply - SIZE 2.5

Get Quote KVA Rating @ 50% Duty Cycle MFDC Inverter Power Supplies Volts Frame Size Secondary Turns Ratio & Voltage Model Number Drawing (PDF) Rating Curve RWMA Pad Size Approx Weight (Lbs)
Tap 1 Tap 2
Turns Ratio Volts Turns Ratio Volts
100 2.5 500 S 55:1 9.1 N / A N / A TDC-8553 8553-1 RC Size 2.5 N / A 37
100 2.5 650 S 72:1 9.0 N / A N / A TDC-8438 8438-1 RC Size 2.5 N / A 37
100 2.5 800 S 87:1 9.2 N / A N / A TDC-8554 8554-1 RC Size 2.5 N / A 37

MFDC / Inverter Power Supply - SIZE 3

Get Quote KVA Rating @ 50% Duty Cycle MFDC Inverter Power Supplies Volts Frame Size Secondary Turns Ratio & Voltage Model Number Drawing (PDF) Rating Curve RWMA Pad Size Approx Weight (Lbs)
Tap 1 Tap 2
Turns Ratio Volts Turns Ratio Volts
160 3 500 S 55:1 9.0 38:1 13.1 TDC-5826-B 5826-1 RC Size 3 N / A 64
160 3 650 S 72:1 9.0 50:1 13:0 TDC-5998-B 5998-1 RC Size 3 N / A 64
160 3 800 S 88:1 9.0 61:1 13.1 TDC-5999-B 5999-1 RC Size 3 N / A 64

MFDC / Inverter Power Supply - SIZE 3.5

Get Quote KVA Rating @ 50% Duty Cycle MFDC Inverter Power Supplies Volts Frame Size Secondary Turns Ratio & Voltage Model Number Drawing (PDF) Rating Curve RWMA Pad Size Approx Weight (Lbs)
Tap 1 Tap 2
Turns Ratio Volts Turns Ratio Volts
170 3.5 650 S 50:1 13.0 N / A N / A TDC-7660 7660-1 RC-7660 N / A 53.4
170 3.5 650 S 50:1 13.0 N / A N / A TDC-7224 7224-1 RC-7224 N / A 60

MFDC / Inverter Power Supply - SIZE 4

Get Quote KVA Rating @ 50% Duty Cycle MFDC Inverter Power Supplies Volts Frame Size Secondary Turns Ratio & Voltage Model Number Drawing (PDF) Rating Curve RWMA Pad Size Approx Weight (Lbs)
Tap 1 Tap 2
Turns Ratio Volts Turns Ratio Volts
170 4 500 H 50:1 10:1 38:1 13.15 TDC-5441 5441-1 RC-5441 N / A 100
170 4 650 H 68:1 9.55 50:1 13:1 TDC-1078 1010335 1110079 N / A 100
170 4 800 H 84:1 9.52 61:1 13.11 TDC-5620 1010335 1110079 N / A 100

MFDC / Inverter Power Supply - SIZE 6

Get Quote KVA Rating @ 50% Duty Cycle MFDC Inverter Power Supplies Volts Frame Size Secondary Turns Ratio & Voltage Model Number Drawing (PDF) Rating Curve RWMA Pad Size Approx Weight (Lbs)
Tap 1 Tap 2
Turns Ratio Volts Turns Ratio Volts
225 6 500 H 38:1 13.15 N / A N / A TDC-7080 7000-1 RC-7000 N / A 110
225 6 650 H 50:1 13:1 N / A N / A TDC-7000 7000-1 RC-7000 N / A 110
320 6 500 S 55:1 9.09 38:1 13.15 TDC-5874 5874-1 RC-5874 #2 metric 250
320 6 650 S 72:1 9.02 50:1 13:1 TDC-5876 5874-1 RC-5874 #2 metric 250
320 6 800 S 88:1 9.09 61:1 13.11 TDC-6128 5874-1 RC-5874 #2 metric 250

MFDC / Inverter Power Supply - SIZE 8

Get Quote KVA Rating @ 50% Duty Cycle MFDC Inverter Power Supplies Volts Frame Size Secondary Turns Ratio & Voltage Model Number Drawing (PDF) Rating Curve RWMA Pad Size Approx Weight (Lbs)
Tap 1 Tap 2
Turns Ratio Volts Turns Ratio Volts
400 8 500 B 55:1 9.09 38:1 13.15 TDC-5447 5547-1 RC-5547 #3 metric 435
400 8 650 B 68:1 9.55 50:1 13:1 TDC-5422 5422-1 RC-5422 #3 metric 435

Transformer Repair Services

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