MSM-PS185 NRTL Certified 4000W Power Supply for Arc Melting Systems
The MSM-PS185 power supply is engineered to provide reliable and precise electrical power for arc melting applications, specifically designed to support MTI’s SP-MSM130 arc melting system. This power supply enables controlled melting of high-purity materials by delivering stable TIG and stick welding currents, essential for laboratory and research environments requiring consistent arc performance.
Utilizing individual IGBT inverter technology with digital micro-control, the MSM-PS185 offers dual voltage operation at 120V and 240V single phase inputs. It supports both AC and DC TIG welding modes as well as DC stick welding, providing versatile output ranges suitable for various melting and welding tasks. The unit is ETL certified, ensuring compliance with safety and performance standards.
Key Features
- Maximum TIG output current of 185A at 240V with 4000W power capacity.
- Supports AC/DC TIG and DC stick welding with advanced square wave AC output.
- Digital micro-controlled inverter with individual IGBT components for stable arc control.
- Dual voltage input: 120V (125A max TIG) and 240V (185A max TIG), single phase.
- Adjustable AC frequency range from 20 to 250 Hz and AC balance from 10% to 90% positive.
- Features HF and lift TIG start, pulse welding capability, and auto adaptive hot start for stick welding.
- ETL certified for safety and quality assurance.
Technical Specifications
| Parameter | Specification |
|---|---|
| IGBT Type | Individual IGBT |
| Inverter Type | Digital / Micro-controlled |
| Output Type | AC/DC TIG, DC Stick |
| Voltage / Phase | Dual Voltage 120/240V, Single Phase |
| Max Rated TIG Amps | 120V: 125A, 240V: 185A |
| Max Rated Stick Amps | 120V: 100A, 240V: 150A |
| TIG Amps @ Rated Duty Cycle (40ºC) | 120V: 125A/15V @ 35%, 100A/14V @ 60%, 80A/13.2V @ 100% 240V: 185A/17.4V @ 35%, 145A/15.8V @ 60%, 110A/14.4V @ 100% |
| Stick Amps @ Rated Duty Cycle (40ºC) | 120V: 100A/24V @ 35%, 80A/23.2V @ 60%, 60A/22.4V @ 100% 240V: 150A/26V @ 35%, 120A/24.8V @ 60%, 90A/23.6V @ 100% |
| Max Inrush (I1MAX) Amps | 120V: 34A, 240V: 29A |
| Maximum Rated Input Amps (I1EFF) | 120V: 21A, 240V: 17A |
| Open Circuit Voltage (OCV) | TIG: 74V, Stick: 74V |
| TIG Output Range DC | 120V: 5A-125A / 10.2V-15V 240V: 5A-185A / 10.2V-17.4V |
| TIG Output Range AC | 120V: 20-125A / 10.8V-15V 240V: 20-185A / 10.8V-17.4V |
| Stick Output Range DC | 120V: 5A-100A / 20.2V-24V 240V: 5A-150A / 20.2V-26V |
| Stick Output Range AC | 120V: 20A-100A / 20.8V-24V 240V: 20A-150A / 20.8V-26V |
| Stick Hot Start | Auto regulated, Auto Adaptive Hot Start |
| Stick Function | Auto Adaptive Arc Force Control |
| 6010/Cellulose Electrode Capability | Limited to 6011 electrodes |
| Minimum Amp DC TIG Start | 5A |
| Minimum Amp AC TIG Start | 20A |
| TIG Start Type | HF and Lift Start |
| Down Slope Time | 0-10 seconds |
| Pre-flow Time | Preset / Auto 0.3 seconds |
| Post-Flow Time | 0-25 seconds |
| TIG Pulse | Yes, 1 or 50 Hz frequency |
| AC Frequency Range | 20-250 Hz |
| AC Balance Range | 10-90% Positive |
| AC Wave Forms | Advanced Square Wave |
| Remote Control | 2T / 4T |
| Foot Pedal | Optional |
| Certification | ETL Certified (NRTL) |
| Warranty | 3 years limited manufacturer warranty |
Typical Applications
The MSM-PS185 power supply is ideal for laboratory arc melting systems used in materials research, alloy synthesis, and high-purity metal melting. It supports precise control of arc parameters necessary for reproducible melting and welding processes in specialty furnaces and arc melting setups.
Configuration & Operating Notes
This unit is designed for integration with MTI’s SP-MSM130 arc melting system. Optional foot pedal remote control is available to enhance operator control. Users should ensure proper ventilation and follow electrical safety standards when operating high-current welding power supplies. The power supply supports advanced TIG pulse and AC waveform adjustments for optimized melting performance.
