noun
chassis ground; frame ground
Technical term in electronics and electrical engineering for grounding the metal case or frame of a device. Wasei-eigo from English 'case earth'.
wasei-eigo (Japanese-coined English), from case earth
この装置はケースアースを取らないと感電の危険があります。
This device must have its chassis grounded, or there is a risk of electric shock.
ケースアース端子にアース線を接続してください。
Connect the ground wire to the chassis ground terminal.