Description
Chroma 61812 Grid Simulator Repair and Calibration
The Chroma 61812 Grid Simulator is a regenerative grid simulator: a high-power programmable AC source that recreates utility conditions such as sags, swells, frequency shifts and harmonics for testing inverters, chargers and other grid-tied equipment. Because it can feed absorbed energy back to the line, its power stage works in both directions.
June Company repairs and calibrates the Chroma 61812 Grid Simulator for inverter and EV-charger developers, renewable-energy test labs, and certification laboratories. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.
Common Chroma 61812 Grid Simulator problems we fix
- Regenerative power-stage faults.
- Output voltage or frequency out of regulation.
- Programmed sags, swells or harmonics not reproduced at the output.
- Line-side faults or trips at startup.
- Protection tripping under load.
- Metering readback out of tolerance.
- Display, keypad or front-panel faults.
- GPIB, LAN, USB or remote-control faults – which breaks automated test sequences while the instrument still works from the front panel.
FAQs
It trips as soon as the load draws real power. Is that the unit or my setup? Often the unit. A weak power stage or a drifted protection threshold shows up first under load, and we test at load to find it.
What if it is not economical to repair? We tell you in the quote, and you decide whether to go ahead.
Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.
Related Chroma repairs
We service 245 Chroma instruments. See all AC Power Source Repair.




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