XS series operating manual 
 
XS user manual v0.55  - 31 - 
PRODUCT OVERVIEW  
 
The XS series is a range of units performing very easily insulation resistance measurements, dielectric 
strength tests and ground continuity tests.  
The RXS50/56 and RXS500/506 are dielectric strength testers under 50VA or 500VA and the DXS50/56 
and DXS500/506 are dielectric strength testers under 50VA or 500VA including a megohmmeter, and 
the SXS50/56 and SXS500/506 include all the above functions plus a ground continuity function. The 
SXS16 also includes all three functions, but the dielectric strength test function and the megohmmeter 
function are specific.   
The  XS  series  makes  possible  to  perform  insulation  resistance  measurement,  ground  continuity 
resistance measurement and dielectric strength test on a various number of insulating material as resin, 
porcelain, oil, plastic as well as on final products such as capacitors, transformers, switches, cables, 
connectors or on devices connected to the main or supplied by batteries. The instruments allow ground 
continuity  measurement  fitting  most  part  of  the  existing  standards  regarding  measuring  and  medical 
fields, office devices, machinery,... 
The XS series is fitted with a high resolution liquid crystal display (LCD) and a keyboard allowing an easy 
use. A single output for the dielectric strength tests and the insulation resistance measurements makes 
easy the  connection on the specimens.  Red and green  LED lamps indicate visually and without  any 
confusion the tests results. 
The dielectric strength tests are performed under adjustable voltages from 100 VAC up to 5000 VAC ( up 
to 6000 VDC for the XS56 and XS506 models) by XS devices other than the SXS16, which can perform 
dielectric strength tests under voltages from 100VDC and 10000VDC.  The  short circuit current  is 10 
mA  for  50VA  models, 200  mA  for  500VA  models,  and  less  than  1mA  for  SXS16.  The  breakdown 
voltages and currents are memorized on the display after breakdown detection and voltage cut off. 
The insulation resistance measurements are performed under voltages from -10 up to -500VDC (-20 to    
-1000VDC with option 26) for XS devices other than the SXS16. The SXS16 performs the resistance 
measurement under voltages from +500 up to +1500VDC. The XS unit indicates in a direct reading with 
unity display, the resistance values from 50 k up to 200 G (2 T in option ), except the SXS16 which 
gives values from 1MΩ to 20GΩ. 
The ground continuity resistance measurement is performed under current from 5 to 32A AC with open 
circuit voltages of 6 or 12V AC. The XS unit indicates in a direct reading with unity display, the resistance 
values from 1mto 1500m. 
RS232C serial interface comes as standard with the XS series and in option, the unit can be equipped 
with PLC input/output interface or with a IEEE488 or ETHERNET interface enabling a full remote control 
by a PC computer.