Ultraviolet light ballast transformers from Shape use medium-pressure mercury vapor and additive UV lamps to treat municipal and shipboard water, and to cure UV inks.
Electromagnetic ballasts are primarily used to cure UV ink to paper. They are less expensive, and more reliable, than electronic ballasts.
Electromagnetic ballasts typically offer only two or three output options. If additional control is required, Shape offers electronically controlled ferroresonant ballasts that have infinitely variable output and are more suited for applications that require greater control, like curing UV ink to plastic, where the printing surface is more susceptible to heat damage.
Controlled Ferroresonant Ballasts (CFB) are PLC-controllable and have analog outputs to provide feedback on system status (i.e. lamp voltage; lamp current; and warm-up, ready, or fail modes.)