Method of Procedure: Disable HVRT

Created by Victor Herrera, Modified on Thu, Jun 9, 2022 at 10:37 AM by Victor Herrera

Phenomenon 

The inverters ship with California Rule 21 grid standard enabled (R21P3-24A). If the grid standard is changed to IEEE 1547 standard (UL-240A), when the grid voltage line-to-line is greater than 252V (LCD displayed value), the power can be reduced to 20W. This will not affect inverters with the California Rule 21 default settings. 

 

Affected Models 

  • 1P2.5-6K-4G-US (from July 2, 2019 to October 11, 2019) 

  • 1P6-10K-4G-US (from July 2, 2019 to April 10, 2020) 

 

Cause 

The inverters ship with a default setting of California Rule 21 grid standard (R21P3-24A). If an inverter was set to IEEE 1547 standard (UL-240V-A), it has high voltage ride-through (HVRT) enabled with a ride-through limit of 252V. HVRT should be disabled as the default setting as it is not an IEEE 1547 requirement. When voltage reaches 252V inverter will enter HVRT mode and reduce output power until the AC voltage falls below 252 V. 

 

Solutions 

For the affected inverters that were changed to IEEE 1547 (UL) standard, disable the HVRT setting via the LCD display and verify the standard modes are set in accordance with the inverter manual. 

 

Because the grid standard R21P3-24A is the default setting, no change is required for inverters installed in California. 

 

Procedure 

  1. Enter the Advanced Settings Menu: Advanced Settings →Password: 0-0-1-0 →ENTER 

  1. Turn off the AC power to the inverter: Grid On/Off →Select "Off"→ ESC. This brings you back to the Advanced Settings Menu. 

  1. Advanced Settings → Special Settings → V/FRT Set→ ENTER 

  1. Scroll down to VRT_US. If it is set to “RUN,” change selection to “STOP.” 

  1. Restore inverter operation: Advanced Settings →Grid On/Off→ Select "ON"→ ESC. 

  1. Observe inverter and verify normal operation. 

  1. If you experience continued operation problems, notify Ginlong Solis USA technical support via 1-866-438-8408 or [email protected]. 

 

Was this article helpful?

That’s Great!

Thank you for your feedback

Sorry! We couldn't be helpful

Thank you for your feedback

Let us know how can we improve this article!

Select at least one of the reasons
CAPTCHA verification is required.

Feedback sent

We appreciate your effort and will try to fix the article