Full Digital IGBT Inverter Manual Metal Arc (MMA/SMAW) Welding Machines (400/500/630A)

Suitable for welding of various acidic, alkaline, stainless steel and low-hydrogen rods

Input voltage allows fluctuation range up to ± 25%

Being satisfied with long-distance operations, and stable welding is ensured when the cable is extended to 100 meters

Adjustment for thrusting current and arc initiation current can improve welding performance

Equipped with VRD electric shock protection function to ensure safe welding

ST500 & ST630 MMA/SMAW welders have gouging function (maximum 12mm carbon rod for ST630 MMA/SMAW welders)

Enclosure protection level reaches IP23 and high-reliability design for harsh welding environments

Features

1. U-Disk Interface

To ensure customers conveniently obtain Megmeet's foremost welding programs and function customization;
The welding machine can be upgraded through a U disk.

Megmeet ST series MMA/SMAW Welding Machines - U-Disk Interface.png

RFID card swiping function enables quick linking between welding personnel and welding machines;
Coordinated with SMARC welding information cloud-platform to realize more intelligent functions such as parameter issue, welding hours statistics, welding parameter traceability, etc.

Megmeet ST series MMA/SMAW Welding Machines - RFID Card Linking.png

Manual Models	ST400 MMA/SMAW Welders	ST500 MMA/SMAW Welders	ST630 MMA/SMAW Welders
Control Mode	Full Digital	Full Digital	Full Digital
Rated Input Voltage	3 Phase AC 380V(±25%)	3 Phase AC 380V(±25%)	3 Phase AC 380V(±25%)
Input Frequency	50~60Hz	50~60Hz	50~60Hz
Rated Input Power	17.1KVA/16.3KW	23.6KVA/22.2KW	32.4KVA/30.4KW
Power Factor	0.95	0.94	0.94
Efficiency	0.885	0.9	0.91
Energy Efficiency	Class A	Class A	Class A
Rated OCV	63V	73V	78V
Rated Output Current	400A	500A	630A
Rated Output Voltage	34V	40V	44V
Rated Current Range	30～400A	30～500A	30～630A
Thrusting Current Range	0～200A	0～200A	0～200A
Arc Initiation Current Range	0～200A	0～200A	0～200A
Duty Cycle	400A@60%	500A@100%	630A@100%
Protection Against Lightening	Class D	Class D	Class D
Insulation Grade	F（Reactor H）	F（Reactor H）	F（Reactor H）
Ingress Protection	IP23	IP23	IP23
Working Temperature	-10℃~+40℃	-10℃~+40℃	-10℃~+40℃
Dimension (L×W×H)	684×320×580mm	684×320×580mm	684×320×580mm
Gross Weight	34kg	37kg	38kg
Extended Function
SMARC Welding System（Optional）	√	√	√
USB Upgrade	√	√	√