To help engineers and procurement professionals quickly locate and verify items, we have compiled a detailed exploded view diagram and specification list for the internal core assembly of the OTC Daihen AVP360 TIG Welding Machine — the Secondary Transformer ASSY. This list includes the diode modules, IGBT modules, thyristors, various film capacitors, and cement resistors mounted on this assembly.
1. Exploded View Diagram of AVP360 Secondary Transformer ASSY
2. Real-Time Quick Search Table for Part Details
This list is clear at a glance. You can directly cross-reference the Part Symbol from the exploded diagram above and find the corresponding name, model, and specifications in the search box or table below:
| Part No. (OTC Order No.) | Symbol | Part Name | Specification |
|---|---|---|---|
| 4531-080 | DR2,3 | Diode Module | RM300CA-9W |
| 4531-087 | DR4,5 | Diode Module | FRS200BA60 |
| 4531-065 | DR6,7 | Diode Module | PD308 |
| 4534-410 | TR4a, b | IGBT Module | CM300DU-12F 300G |
| 4530-137 | SCR1 | Thyristor Module / SCR | SG25AA60 |
| 4614-051 | THP2 | Thermal Switch / Thermostat | 67L090 |
| 4509-713 | R19 | Carbon Film Resistor | RD1/2W 10kΩ |
| 4518-455 | C11 | Film Capacitor | 50V 0.15 uF |
| 4509-828 | R17,18, R35,36 | Cement Resistor | 20SHN 5ΩKA |
| 4518-454 | C9,10, C12,13 | Film Capacitor | ECWH16333JV |
| 4509-832 | R40,41 | Cement Resistor | 10SHN 0.82ΩKA |
| 4518-434 | C17,18 | Film Capacitor | UE60Y224K |
| 4518-411 | C14, C15a, b | Film Capacitor | EM351200D0B1HP |
| 300-0076 | R28 | Carbon Film Resistor | SPR3C 204J(200K) |
| 4509-883 | R30 | Non-Inductive Resistor | 20SHN 20kΩJ |
| 4504-503 | R20 | Wirewound Resistor | GG80W 200ΩJ |
| 4504-318 | R29a,b, R37 | Parallel Wirewound Resistor | NCRF22V 5Ω |
| P6019H | PCB8 | Printed Circuit Board (PCB) | P6019H00 |
3. Purchasing Original Parts & Technical Support
The items listed above are standard electronic components inside the OTC welding machine. If you need to purchase any relevant spare parts from the Secondary Transformer ASSY mentioned above, please directly provide us with the equipment nameplate or the corresponding part number. As an authorized distributor, we promise to provide 100% genuine original parts with professional technical guidance from our maintenance engineers to ensure perfect compatibility.
Contact Us for Inquiries & Support
- Global Sales & Tech Support: International Sales Team
- 24/7 Service Hotline (WhatsApp & WeChat Same No.): +86-180-9663-1656
- Official Email: ahojotc@gmail.com
Please take a screenshot or copy the "Part Number" you need and send it to us via WhatsApp or Email. We will provide you with real-time pricing and inventory status as quickly as possible!


