AirMan SG - Leakage Protection and Grounding

3. Installation
3-5
3.3 Leakage Protection Device and Grounding Method
Make sure to perform grounding connection of the external body of load. If such grounding connection is
neglected or fails, it can cause electric shock to human body by leaked current, leading to serious
accident as death.
Grounding terminal for residual current relay and grounding terminal of the package of the machine can
be connected to both independent grounding base and to common grounding base.
This ground fault circuit interrupter does not function to protect such electric shock accident caused
between these two wires (cables).
3.3.1 Leakage Protection Device
This machine is equipped with a leakage relay which detects leakage caused by a defective
insulation of working load to prevent an accident such as an electric shock by shutting down the
circuit. However, for additional safety, install ground fault circuit interrupter (GFCI) for each load
equipment close to the load equipment. The sensitivity current of the leakage relay is 30 mA.
3.3.2 Grounding Method
<Procedure>
Connect a lead wire fitted with a ground rod to the leakage relay grounding terminal (E) of the
three-phase output terminal board.
① Connect the generator machine ground terminal of the package to ground.
② Be sure to ground the package of the load equipment as well.
③ These grounding must be carried out in accordance with local regulations.
Caution on Grounding