Caterpillar LEXX0526-03 Manuale Utente

 

LEXX0526-03 

                                    

 

 

 

 

● Ratings 100 to 4000 amperes 
● 2, 3 or 4 Poles 
● NEMA 1, 3R, 4, 4X and 12 
● Available with CTS, CTSD and CTSCT Series 
   Transfer Switch 
● Bypass and transfer switch have identical ratings 
   Suitable for emergency and standby applications 
   on all classes of load, 100% tungsten rated through 

400 amps 

● UL 1008 listed at 480 VAC 
● CSA C22.2 No. 178 certified at 600 VAC 

   ● IEC 947-6-1 listed at 480 VAC 

 
PERFORMANCE FEATURES 
● Load is not interrupted during bypass operation 
● High close-in and withstand capability 
● Temperature rise test per UL 1008 conducted after 
   overload and endurance tests in unventilated 
   enclosure – exceeds UL requirements 
 
DESIGN AND CONSTRUCTION FEATURES 
● Transfer switch is located on a draw out mechanism to 

facilitate maintenance 

● Emergency power systems can be electrically tested 
   without disturbing the load 
● Power cables do not have to be disconnected to 
   remove transfer switch 

 

● Bypass to any available source with transfer 
   switch removed 
● Engine start circuit maintained during bypass 

operation; normal power failure causes engine 
start contact closure even with the ATS removed 

● Diagnostic lights and detailed instructions for 

simple step by step operation 

● Mechanical and electrical interlocks ensure proper 

sequence of operation 

● Bypass switch contacts are closed only during the 

bypass-isolation operation 

● Silverplated copper bus interconnection of the 
   transfer and bypass switches on all sizes 

 
Transfer/Bypass-Isolation Switches 
The automatic transfer switch is a key element in 
any emergency power system. The importance 
of the transfer switch increases as the need for 
dependable power grows. Though designed to 
give consistent operation, the automatic transfer 
switch must be periodically maintained to 
ensure proper operation and system reliability. 
Maintenance of the entire system is called for in 
the National Electrical Code Article 700-4, NEMA 

   Standard ICS2-447 and in NFPA 99.