Current protective devices in the line I residual current action value

Current value increases to the left thermistor excessive current does not flow through damage.  Voltage stabilizer  devices in the line I residual current action value, the residual voltage returns to normal after the protector can normally closed off the flow protection, which play a protective role. "With the text used in the actual  power transformers of pressure sensitive resistor should be soldered on zero sequence currents "varistors and zero sequence current transformer transformer two  electric meter the diagonal. In accordance with this pick and pick "'' varistors and zero-sequence current transformer method, the choices may be appropriate to reduce the capacity of the varistor in parallel to the welding schematic" and contradict each other.