Meridian Laboratory ROTOCON ERG and ERGT Rotary Grounds
Meridian Laboratory ROTOCON ERG and ERGT Rotary Grounds
ROTOCON ERG and ERGT provide a high-current electrical connection between stationary and rotating parts of a process. ERG mounts at an accessible end of the assembly; ERGT offers a through bore for an over-shaft installation or central service path. Meridian Laboratory also engineers custom physical rotary grounds when a standard mounting, bore or envelope does not fit.
Review Summary
Consider these rotary grounds for a defined welding, plating or similar process-current path. The useful selection distinction is end access versus a through bore, followed by the exact current, connection and speed limits. In particular, the ERGT table assumes continuous DC duty, specifies lower AC ampacity and requires every conductive body stud to be used for the listed current.
Function Single-contact rotating process-current connection; not an assumed protective-earth certification End-mounted examples ERG-400: 400 A continuous; ERG-800: 800 A continuous; mounting-specific dimensions ERGT smaller-envelope rows 500, 1000, 1500 or 2000 A; 0.250–2.000 in specified bore; 200 rpm continuous / 400 momentary Smaller ERGT envelope 4.55 in total length; 4.3 in outside diameter; 1/2 in-13 conductive studs ERGT larger-bore 2000 A row 1.000–2.500 in bore; 5.187 in length; 6 in diameter; 150 rpm continuous / 300 momentary ERGT 3000 A row 1.000 in listed bore; 6 studs; 150 rpm continuous / 300 momentary Critical current conditions ERGT table assumes 100% DC duty; AC has lower ampacity; all conductive studs required Custom scope Application-specific physical size, mounting, materials and sealing require an approved design Price Request a quote for the complete current path and mounting configuration Applications and Industries
Rotary welding, electroplating, electropolishing, plasma cutting and rotating deposition equipment
Industrial automation
Request a quote for the exact configuration,quantity and delivery schedule.
| Function | Single-contact rotating process-current connection; not an assumed protective-earth certification |
| End-mounted examples | ERG-400: 400 A continuous; ERG-800: 800 A continuous; mounting-specific dimensions |
| ERGT smaller-envelope rows | 500, 1000, 1500 or 2000 A; 0.250–2.000 in specified bore; 200 rpm continuous / 400 momentary |
| Smaller ERGT envelope | 4.55 in total length; 4.3 in outside diameter; 1/2 in-13 conductive studs |
| ERGT larger-bore 2000 A row | 1.000–2.500 in bore; 5.187 in length; 6 in diameter; 150 rpm continuous / 300 momentary |
| ERGT 3000 A row | 1.000 in listed bore; 6 studs; 150 rpm continuous / 300 momentary |
| Critical current conditions | ERGT table assumes 100% DC duty; AC has lower ampacity; all conductive studs required |
| Custom scope | Application-specific physical size, mounting, materials and sealing require an approved design |
| Price | Request a quote for the complete current path and mounting configuration |
