Before any job, test your equipment. Malfunctioning electrical equipment is a massive electrocution risk. With that in mind, be sure to inspect your equipment carefully for peeling wiring and other forms of damage, particularly equipment you use often such as your reliable DC current transformer.
If you feel a tingling sensation when working with a piece of equipment, stop working immediately and ask for replacement equipment. In the event that you need to purchase a new DC voltage transducer or any other piece of equipment, be sure to deal only with reputable suppliers like Aim Dynamics. This assures you that you’ll be receiving both quality equipment and quality service.