Patent ID: 11897343
Assignee: SANYO ELECTRIC CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H  Y | IPC B

Claim 0:
1. An earth leakage detection device, comprising:
a coupling capacitor including one end connected to a current path of a power storage unit, the power storage unit being connected to a load in a state of being insulated from a ground;
a voltage output unit that generates a periodically changing periodic voltage and applies the periodically changing periodic voltage to another end of the coupling capacitor via a first resistor;
a second resistor and a third resistor connected in series between (i) a node between the coupling capacitor and the first resistor and (ii) a predetermined fixed potential;
a voltage measurement unit that measures a voltage at a voltage dividing point between the second resistor and the third resistor; and
an earth leakage determination unit that determines whether or not a leakage occurs between the current path of the power storage unit and the ground based on the voltage measured by the voltage measurement unit.