This image above is just an example illustrating this type of configuration in a astrological chart.

A Grand Trine occurs when three planets are placed an equal distant apart, approximately 120° from each other. This is less common than the T-Square but is much more beneficial in its effects. This configuration suggests that you have earned some special advantages to be enjoyed in this life. The trines indicate a harmonious flow of energy and potential for creative self-expression. Sometimes, however, the Grand Trine confers too much stability and leads to inertia and a lack of motivation to dynamic action. Many with Grand Trines do not accomplish as much as they could and should in life, simply because the easy flow of events does not necessarily stimulate to achievement and ambition.