Earth leakage circuit breaker and image forming apparatus
First Claim
1. An earth leakage circuit breaker comprising:
- an earth leakage detector that is installed on an electric circuit between an alternating current (AC) power supply and a load, and detects earth leakage;
a rectifier that switches between a full-wave rectification method and a rectification method other than the full-wave rectification method, and rectifies AC power supplied from the AC power supply to generate direct current (DC) power;
a switching part that is installed on an electric circuit between the AC power supply and the rectifier, and switches between supply and interruption of the power from the AC power supply; and
a controller that is driven by the DC power generated by the rectifier, and causes the switching part to interrupt the power from the AC power supply when the earth leakage is detected by the earth leakage detector,wherein the controller causes the rectifier to be operated according to the rectification method other than the full-wave rectification method until the earth leakage is detected by the earth leakage detector, and causes the rectifier to be operated according to the full-wave rectification method when the earth leakage is detected by the earth leakage detector.
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Abstract
An earth leakage circuit breaker includes an earth leakage detector, a rectifier, a switching part, and a controller. The switching part is installed on an electric circuit between an alternating current (AC) power supply and the rectifier, and switches between supply and interruption of the power from the AC power supply. The earth leakage detector is installed between the AC power supply and a load. The rectifier rectifies the AC power into direct current (DC) power. The controller causes the rectifier to perform half-wave rectification until earth leakage is detected by the earth leakage detector, and causes the rectifier to perform full-wave rectification when the earth leakage is detected by the earth leakage detector.
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Citations
6 Claims
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1. An earth leakage circuit breaker comprising:
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an earth leakage detector that is installed on an electric circuit between an alternating current (AC) power supply and a load, and detects earth leakage; a rectifier that switches between a full-wave rectification method and a rectification method other than the full-wave rectification method, and rectifies AC power supplied from the AC power supply to generate direct current (DC) power; a switching part that is installed on an electric circuit between the AC power supply and the rectifier, and switches between supply and interruption of the power from the AC power supply; and a controller that is driven by the DC power generated by the rectifier, and causes the switching part to interrupt the power from the AC power supply when the earth leakage is detected by the earth leakage detector, wherein the controller causes the rectifier to be operated according to the rectification method other than the full-wave rectification method until the earth leakage is detected by the earth leakage detector, and causes the rectifier to be operated according to the full-wave rectification method when the earth leakage is detected by the earth leakage detector. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification