3-2 System Preparation 
3.2  Connecting Power Cord & Protective 
Grounding 
3.2.1  Connecting Power 
  The power system must meet the following requirements: 
Voltage:220-240V 
Power supply frequency: 50/60Hz   
Power consumption: greater than 800VA 
  The connection method is described as follows: 
1.  Push the retaining clamp upward, and insert the power plug into the receptacle, as shown in 
the figure below. 
   
2.  Pull the retaining clamp downward to lock the power cord, as shown in the figure below. 
3.  Plug the other end power plug into an appropriate outlet. The grounding terminal should be 
connected with a power grounding cable to ensure that protective grounding works normally. 
 
 
Make sure to allow sufficient slack in the cable so that the plug will not be pulled out of 
the receptacle if the system is moved slightly. If the plug is pulled out accidentally, data 
may be lost.