Load bank is a kind of test equipment, mainly used for testing and maintenance of generators, uninterruptible power supply and transmission equipment. Its use avoids the economic loss caused by the failure of the standby unit or power supply, and also provides a scientific basis for the  testing of the bearing capacity of the new unit.

The fuel used by the generator set is diesel. When the load is below 50% or no load, light loads are bound to occur, leading to fuel shortages, carbon deposition and overall efficiency reduction, resulting in starting failures, underpower and excess fuel." Open cylinders too early for repair until they are scrapped.

The use of load can avoid the above situation and improve the reliability of diesel generator set. load bank equipment can provide an effective method of testing and maintaining the generator set to verify all characteristics of the set without interrupting the very important actual load.

The load bank is divided into resistive load, reactive  load and capacitive load. We use more resistive loads, called virtual loads, to simulate the presence of real loads. The main part is the resistance part, and some meters and circuit breakers are added in the design. The payload is usually made into a box, often called a stowage box. The development time of loader in our country is enough for 10 years.  Now, most power plants and shipyards use more water loads, which have been replaced by dry load tanks. Dry load bank test data higher precision, easy to control. In shipyards, resistance inductive honor integral load banks are mostly used, that is, the main accessories are resistors, reactors and capacitors. Reactors and capacitors are mainly used to control the power factor, but also to calculate the input capacity according to user needs.