Note 
Naming rules for this series of model are as follows: IT79XXX-YYY-ZZZ, 
wherein, XXX means rated power, YYY means rated voltage, and ZZZ 
means  rated  current. Take  IT7915P-350-90  for an  example,  the  rated 
power is 15kVA, rated voltage is 350V and rated current is 90A. 
1.3 Optional accessories 
The  IT7900P  series  supports  the  following  optional  accessories  (sold 
separately), the details are as below: 
The interface expansion slot provided on the rear panel of the IT7900P series 
instrument allows  users to  flexibly expand  according  to  their  needs. Different 
interface cards can be selected to achieve different functions. 
The following optional accessories from ITECH are sold separately. Users need 
to purchase separately. 
When  the  user  needs  to  use  GPIB 
interface to enable remote operation, this 
option is the right choice. 
Interface  card  that  includes  RS-232 
communication  interface  and  external 
analog. When the user needs to use RS-
232 or external analog interface to enable 
remote  operation,  this  option  is  the  right 
choice.