Potential relay for professional applications

The voltage relays are used in refrigeration and air conditioning units larger than 1/2 HP. They consist from a coil whose ends are adjacent to the auxiliary winding, so the voltage prevails in auxiliary dominance and at the ends of the relay coil. The contacts of the voltage relay are normally closed in contrast to the contacts of the tension relay.This is a very big advantage of the voltage relays because the high-priced starting current finds free passage to the auxiliary non-sparking (ARC) winding that heats and destroys contacts. As they grow the engine revs are so increasing and the generated anti-electric force in the winding startup. When the engine gets 85% of its speed.Then the tension at the ends of the auxiliary and the relay coil (as parallel circuits) is about 2.5 times greater than network voltage and develops a magnetic field capable of pulling the switch of the operating contacts. Thethe voltage relay remains armed and the auxiliary runs the engine indefinitely due to the inductive current generated in the auxiliary inding and the relay coil.When the engine stops the contacts come back to the closed position ready for a new start. If it burns down voltage relay coil, then the motor will start, but the auxiliary winding and the capacitor startup will remain in the circuit and after the boot, resulting in its destruction starting capacitor or even the auxiliary motor winding itself. When the engine stops the contacts come back to the closed position ready for a new start. If it burns downvoltage relay coil, then the motor will start, but the auxiliary winding and the capacitor startup will remain in the circuit and after the boot, resulting in its destruction starting capacitor or even the auxiliary motor winding itself.This is a very big advantage of the voltage relays because the high-priced starting current finds free passage to the auxiliary non-sparking (ARC) winding that heats and destroys contacts. As they grow the engine revs are so increasing and the generated anti-electric force in the winding startup. When the engine gets 85% of its speed.