Switching heavy loads (230 V, 16 A) even with miniature relays reliably and for long endurance, pikkerton developed the SART- (Smart Adaptive Relay Triggering) Technology.
Basically it switches the relays´ contacts on and off during the zero-crossing of the current. This is quite easy with purely ohmic loads, because the voltage zero-crossing is available in most of the relay triggering systems. With dephased - capacitive or inductive - loads, this can become really counterproductive. Long and energy-rich electric arcs can damage the relays´ contacts massively, sometimes the relay or the whole product won´t work anymore.
pikkerton SART-Technology consists of following core functionalities:
Click on picture to enlarge. Relay´s contacts without SART technology on PC power supply simulation, after <500 triggerings defective & burnt (random trigger) with clear arc on the oscillogram, showing the current.
Click on picture to enlarge. Relay´s contacts with SART technology on PC power supply simulation, more than 12000 triggerings (µC controlled trigger) with oscillogram, showing the current.
pikkerton SART technology is based on Panasonic Electric Works relays, combining small form factor with low and well-defined bounce time.