Hitachi Microscope & Magnifier S-4800 User Manual

1-11 

Use 8 square mm cable with M5 wire terminal.   
 

CAUTION 

Be sure that the output of the step down transformer is AC100V ±10%. Irregular connection 
causing higher voltage will result serious damage to the equipment.       

 
Alternately the step down transformer may be put at the input of S-4800.   
In the case, connect the input of the transformer to the main breaker of the site power supply. 
Connect the out put to the Main breaker (ELB) of S-4800. Refer fig 1-5 for the connection. 
 
However, the former way (put the step down transformer next to the S-4800 Main breaker) is 
strongly recommended for safety. 

 
 
 
 
 
 
 
 

In both of above cases, ground the instrument at a grounding resistance lower than 100 ohms.   
The grounding terminal must not be common to other electric equipment, i.e. exclusive grounding 
should be provided. 
 

NOTICE 
The instrument provides one of following two types of Main ELB.   
(1) For using with 200 to 240V power line 
    Leakage current breaker (with key lock, CE/UL conforming) 
    Capacity   

 

 

: 6.4kVA 

    Maximum current  

 

: 32A 

    Sensitive current  

 

: 30mA 

    Short-circuit breaking capacity  : 25kA 
(2) For using with 100V power line 
    Leakage current breaker(without key lock, CE or UL not conforming) 
    Capacity   

 

 

: 5kVA 

    Maximum current  

 

: 50A 

    Sensitive current  

 

: 30mA 

    Short-circuit breaking capacity  : 5kA 
 
Instruments shipped to USA and Europe area and ordered to meet S2 guideline provide the  
type of above (1).       
 

100/200V

 

Safety circuit

MAIN-ELB

50A

Step Down Transformer 

100V 

Short

 

Current 
Breaker