Sungrow SH5K, Quick User Manual

Page: 27 / 60

Quick User Manual 2 Electrical Connection
15
2.9 DRED Connection
The inverter supports the DRM (Demand Response Mode) function as specified in
AS/NZS 4777:2015. The terminal block inside the inverter is used for connecting to a
demand response enabling device (DRED). The DRED asserts DRMs. The inverter
detects and initiates a response to all supported demand response commands
within 2s. The following table lists the DRMs supported by the inverter.
Tab. 2-1 DRMs Supported by the Inverter
Mode Explanation
DRM0 The inverter is in the state of “Key-stop”.
DRM1 The import power from the grid is 0.
DRM2 The import power from the grid is no more than 50 % of the rated power.
DRM3 The import power from the grid is no more than 75 % of the rated power.
DRM4
The import power from the grid is 100 % of the rated power, but subject to
the constraints from other active DRMs.
DRM5 The export power to the grid is 0.
DRM6 The export power to the grid is no more than 50 % of the rated power.
DRM7 The export power to the grid is no more than 75 % of the rated power.
DRM8
The export power to the grid is 100 % of the rated power, but subject to the
constraints from other active DRMs.
The DRED may assert more than one DRM at a time. The following shows the priority
order in response to multiple DRMs.
Multiple Modes Priority Order
DRM1…DRM4 DRM1 > DRM2 > DRM3 > DRM4
DRM5…DRM8 DRM5 > DRM6 > DRM7 > DRM8