Title:
レーザ装置
Document Type and Number:
Japanese Patent JP4256432
Kind Code:
B2
Abstract:
A laser (10) provided with a discharge activation power supply (11) supplied with power from a 3-phase AC power line, the discharge activation power supply (11) provided inside it with three first capacitors (12a, 12b, and 12c), the laser (10) including an external ground fault protection device comprising a voltage measuring unit using the first capacitors (12a, 12b, and 12c) to measure voltages between the phases of the 3-phase AC power line and the ground and a power breaking unit (18) comparing the values of voltages measured by the voltage measuring unit and a predetermined threshold and breaking the supply of power from the 3-phase AC power line to the power supply (11) when the value of a voltage exceeds the threshold.
Inventors:
安藤 稔
小林 英二
鍵和田 哲史
小林 英二
鍵和田 哲史
Application Number:
JP2007117160A
Publication Date:
April 22, 2009
Filing Date:
April 26, 2007
Export Citation:
Assignee:
ファナック株式会社
International Classes:
H01S3/02
Attorney, Agent or Firm:
伊坪 公一
宮本 哲夫
島田 哲郎
青木 篤
鶴田 準一
宮本 哲夫
島田 哲郎
青木 篤
鶴田 準一
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