diff --git a/solax/inverters/qvolt_hyb_g3_3p.py b/solax/inverters/qvolt_hyb_g3_3p.py
index 5bda4ee..b1ff49c 100644
--- a/solax/inverters/qvolt_hyb_g3_3p.py
+++ b/solax/inverters/qvolt_hyb_g3_3p.py
@@ -55,7 +55,7 @@ def __init__(self, http_client: InverterHttpClient, *args, **kwargs):
             vol.Required("data"): vol.Schema(
                 vol.All(
                     [vol.Coerce(float)],
-                    vol.Length(min=200, max=200),
+                    vol.Length(min=200, max=400),
                 )
             ),
             vol.Required("information"): vol.Schema(