soft starter for 3 phase motor

[Sajith]

Hi All,
I have recently purchased a motor soft starter from aliexpress for a 3 phase motor

Before connecting load I measured the input and output voltages.
Input voltages between each phase is 400V. However when I measure the output, voltages (after timer delay) is different.

Output voltages are as follows
Phase1-Phase2 = 450V
Phase2-Phase3 = 300V
Phase1-Phase3 = 270V

Is this normal behavior for a soft starter or the is the unit defective. I did not connect the motor because of this, could this damage the motor ?

Thanks in advance
Sajith