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TECHNICAL FEATURES
1200 AMP ROTARY GROUND SERIES
- Rated to 1200 amps DC continuous at 100% duty cycle
- Offers consistent and stable current delivery and no fluctuation
- No maintenance and routine grease or brush replacement necessary
- Sensitive environment, non-mercury (RoHS) rotary grounds available
ROTOCON ERG-1200 rotary grounds are rated for 1200 amps continuous DC or AC up to 60 Hz, delivering stable, consistent current in high-power rotating applications without fluctuation. Meridian Laboratory brushless 1200 amp rotary grounds are designed as a superior alternative to traditional metal-on-metal rotary grounds, such as the Tweco (ESAB) Roto-Work models WCRG-1200 and WCRG-2000. ROTOCON ERG-1200 rotary grounds provide exceptional durability, performance, and reliability in demanding industrial environments.
Commonly used in rotary welding, electroplating, electropolishing, cutting, and other high-current applications, ROTOCON brushless ERG-1200 rotary grounds feature three different methods for easy integration across a wide range of applications. Unlike brushed and metal-on-metal rotary grounds, ROTOCON brushless 1200 amp rotary grounds are brushless and completely maintenance-free, eliminating the need for brush contact adjustments, grease application, or frequent replacements. Built for heavy-duty industrial use, ROTOCON brushless ERG-1200 rotary grounds are constructed from high-performance materials, ensuring long-lasting, trouble-free operation in the harshest conditions. Its arc-free design prevents internal arcing and degradation, making it the ideal choice for uninterrupted, high-power current transfer in the most critical applications.
Advantages
Why Choose ROTOCON 1200 Amp Rotary Grounds?
General Specifications
ERG-1200 Rotary Ground Specifications
AMPERAGE
1200
AMPS DC
Amperage refers to the continuously rated current specification of the product at direct current (DC) to low/common frequency levels (<120 Hz).For elevated current, temperature, or frequency applications - please contact Meridian Laboratory for more information.
CONTACT RESISTANCE
<0.03mΩ
Contact resistance refers to the electrical resistance between the stationary and rotating portions, internal to the ROTOCON rotating electrical connector. This is measured without additional cabling or connectors, and is internal to the units themselves. This is measured stationary or rotating, regardless of rotational direction, speed, or orientation.
DUTY CYCLE
100%
CONTINUOUS
Duty cycle refers to the duration of time at which the ROTOCON slip ring can operate within a maximum specified condition. Not all ROTOCON slip ring and rotary grounds are tested or guaranteed while in an absolute maximum condition of all specifications (rotational speed, amperage, etc.) simultaneously. For more information or application specific questions, please contact Meridian Laboratory.
Configurations
ERG-1200 Standard Models
| Name | Mounting | Amperage | Total Length | ROHS | RPM | Part Downloads | 2D Download Action Type | File Datasheet | Model Download (3D STP) | Photos |
|---|---|---|---|---|---|---|---|---|---|---|
| Custom Rotary Grounds | End of Shaft | Up to 10,000A | Available with RoHS Compatability | Contact Us | ||||||
| ERG-1200-01 | End of Shaft | 1200A | 4.5" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-1200-01.pdf | Yes | ||
| ERG-1200-01-R | End of Shaft | 1200A | 4.5" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-1200-01-R.pdf | Yes | ||
| ERG-1200-11 | End of Shaft | 1200A | 5.4" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-1200-11.pdf | Yes | IMG_0741_1.jpg | |
| ERG-1200-11-R | End of Shaft | 1200A | 5.4" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-1200-11-R.pdf | Yes | IMG_0741_1.jpg | |
| ERG-1200-21 | Flange | 1200A | 4.74" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-1200-21.pdf | Yes | ||
| ERG-1200-21-R | Flange | 1200A | 4.74" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-1200-21-R.pdf | Yes |
Mounting
1200 Amp Rotary Ground Mounting Options
ERG-1200-01
ERG-1200-11
ERG-1200-21
FAQs
Common Rotary Ground Questions
Does conductive grease need to be applied when installing a ROTOCON rotary ground?
No. The application of grease of any kind, including conductive grease, between the conductive shaft or mating surfaces and the ROTOCON rotary ground is not advised. Meridian Laboratory recommends cleaning and degreasing both the mating surfaces and rotary ground prior to installation. If surface oxide is present on either component, light abrasion with 320 grit sandpaper or Scotch-Brite© Heavy Duty Green pads (or equivalent product) is recommended to ensure a robust electrical contact.
Can a ROTOCON be used in corrosive environments?
Yes, ROTOCON rotary electrical connectors and rotary grounds are built with durable, industrial-grade materials, making them suitable for many challenging environments. Depending on the level of exposure to corrosive substances, a standard model may be sufficient for your application. Meridian Laboratory also offers upgrades to enhance ingress protection (IP rating) and chemical resistance. For extreme cases, Meridian Laboratory has the ability to deliver custom ROTOCONs to meet the challenging environmental requirements of your application. Contact us to discuss your project and find the best solution for your needs.
Do you offer a rotary ground with an integrated rotary gas union?
Yes, Meridian Laboratory offers a standard model ERGT-800-1PRU, offering the functionality of being both a rotating electrical ground and a gas/air union combined into one solution. We also offer custom rotary grounds and rotary unions based on the specific needs of your application. Please visit our Rotary Union Combination page or contact us to learn more.
What is the expected lifespan of a ROTOCON rotary ground?
ROTOCON rotary grounds are built to provide reliable, uninterrupted electrical contact over an extended operational lifespan, frequently surpassing 500 million revolutions without requiring cleaning, conductive grease, or brush maintenance. Our designs emphasize long-term performance and dependability, using carefully selected materials and components to ensure a robust, maintenance-free solution.
Can a ROTOCON rotary ground be used as a mechanical bearing / turntable?
While it is expected that a certain amount of cable weight is present on the ROTOCON rotary grounds, they are not intended to be a load-bearing device used to support the objects being grounded and rotated. For exact ratings and more information, please see the model specific datasheets or contact us with any questions relative to your application.
What is the maximum voltage a ROTOCON can carry?
Nearly all ROTOCON rotary electrical connectors and rotary grounds are rated to a minimum of 600V AC/DC, unless otherwise stated on their respective model specific datasheets. The maximum voltage rating is largely dependent on the product series of ROTOCON brushless slip rings,but generally speaking, standard models are offered with voltage ratings up to 3,500V AC/DC and custom models available up to hundreds of thousands of volts.
Purpose-built ROTOCON rotary grounds and slip rings have been built, certified, and used for lightning arc grounding devices and other medium to extra high voltage applications up to 800kV. For application specific requirements above our nominally rated ROTOCON rotary ground and slip rings, please contact us for more direct support.
Maximum voltage varies depending on the ROTOCON series and model. See individual datasheets for specific ratings.
Customization
ERG-1200 Rotary Ground Customization Options
MOUNTING
APPLICATIONS & USES
Common Uses for the ERG-1200
Rotary Welding & Cutting
Rotary grounds are essential for tanks, pipes, and other welding applications, providing a stable current transfer as materials rotate during welding. This ensures the seamless production of stacked tubes and other welded components. Likewise, welding tables, positioners, and robotic welding systems rely on a consistent electrical connection while the workpiece or welder moves, maintaining precision and efficiency throughout the welding process.
Rotational Plating & Polishing
When parts are placed into an electroplating or polishing bath, they are often rotated to ensure uniform coverage across all surfaces, leading to a higher-quality finish. Rotary grounds are essential to deliver a stable, consistent electrical current to the workpiece or fixturing during rotation.
Rotary Sputtering & Deposition
In sputtering applications, rotating electrical grounds create a reliable ground circuit for the rotating workpiece, ensuring even and consistent material deposition on the substrate. By maintaining stable ground resistance, the process can be more effectively controlled and monitored, leading to improved precision and a superior final product.
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