Load testing device

A load testing device comprising:

• a resistance unit;
• a cooling fan that cools the resistance unit;
• a circuit breaker;
• a first terminal part that is connected to a test target power source;
• and
• a charge/discharge unit that has a charger and a first power storage device,
• wherein
• the charge/discharge unit is connected with a test target power source cable being between the first terminal part and the resistance unit, between the first terminal part and the circuit breaker,
• the first power storage device stores electric power supplied from the test target power source,
• the cooling fan is driven based on electric power from at least one of the test target power source and the charge/discharge unit,
• the load testing device further comprises a display unit, and
• the display unit outputs information regarding whether the cooling fan is driving based on electric power from the test target power source or driving based on electric power from the charge/discharge unit.

A load testing device comprising:

• a resistance unit;
• a cooling fan that cools the resistance unit;
• a circuit breaker;
• a first terminal part that is connected to a test target power source;
• and
• a charge/discharge unit that has a charger and a first power storage device,
• wherein
• the charge/discharge unit is connected with a test target power source cable being between the first terminal part and the resistance unit, between the first terminal part and the circuit breaker,
• the first power storage device stores electric power supplied from the test target power source,
• the cooling fan is driven based on electric power from at least one of the test target power source and the charge/discharge unit, and
• information regarding whether the cooling fan is driving based on electric power from the test target power source or driving based on electric power from the charge/discharge unit is transmitted to a mobile terminal separate from the load testing device.

A load testing device comprising:

• a resistance unit;
• a cooling fan that cools the resistance unit;
• a circuit breaker;
• a first terminal part that is connected to a test target power source;
• a charge/discharge unit that has a charger and a first power storage device;
• and
• a load resistance,
• wherein
• the charge/discharge unit is connected with a test target power source cable being between the first terminal part and the resistance unit, between the first terminal part and the circuit breaker,
• the first power storage device stores electric power supplied from the test target power source,
• the cooling fan is driven based on electric power from the charge/discharge unit,
• the charge/discharge unit has a first switching relay,
• the first switching relay is used for switching a supply destination of electric power from the test target power source between the charger and the load resistance,
• the charge/discharge unit has a second power storage device, a second switching relay, and a third switching relay,
• the second power storage device stores electric power supplied from the test target power source,
• the second switching relay is used for switching a supply destination of electric power from the test target power source between the first power storage device and the second power storage device, and
• the third switching relay is used for switching whether electric power to the cooling fan is supplied from the first power storage device or supplied from the second power storage device.