AN ELECTRICAL APPARATUS FOR A TRANSPORT REFRIGERATION SYSTEM

The present disclosure relates to an electrical apparatus 100 for a transport refrigeration system 20. The electrical apparatus 100 comprises: a voltage source 120 configured to output a supply voltage; a load 130 having an input 132 electrically coupled to an output 124 of the voltage source 120; and a controller 190. The controller 190 is configured to: monitor the supply voltage output by the voltage source 120 and a voltage received by the load 130 at the input 132 of the load; determine whether a trigger criterion has been met based on a comparison of the supply voltage and the voltage received by the load 130 from the input 132 of the load 130; and cause the electrical apparatus to enter an error handling mode in response to a determination that the trigger criterion has been met.