General guidelines 
This manual provides general information on how to operate the IG/IS-NT controller via InteliVision 5, 
InteliVision 8, IS-Display or from the front panel of InteliGen
NT
 GC or InteliMains
NT
 GC. This manual is 
intended for everybody who is concerned with operation and maintenance of the gen-set.  
Description of the controller system 
NT family controllers are comprehensive AMF-controllers for single and multiple generating sets 
operating in stand-by or parallel modes. Synchronizer, isochronous load sharer, Mains and Generator 
protections allow for a total integrated solution for gen-sets in stand-by and parallel modes with 
multiple engine support. 
NT family controllers (IG-NT, IG-NTC, IG-NT-BB, IG-NTC-BB, IS-NT-BB, IS-NTC-BB, IM-NT, IM-NT-
BB and IM-NTC-BB) could be equipped with a powerful colour display showing icons, symbols and 
bar-graphs for intuitive operation, which sets, together with high functionality, new standards in gen-set 
controls. 
The controller automatically starts the gen-set, closes the gen-set C.B. when all conditions are met, 
then stops the engine on external signal or by pressing push buttons. 
Parallel to Mains operation can be achieved without additional HW. Forward and reverse 
synchronizing, Mains protection including vector shift, load and power factor control, earth fault 
protection are the major functions provided. Interfacing to foreign synchronizers and load sharers is 
supported. 
The key feature of NT family controllers is their easy-to-use installation and operation. Predefined 
configurations for typical applications are available as well as user-defined configurations for special 
applications. 
 
 
Conformity declaration 
Following described machine complies with the appropriate basic 
safety and health requirement of the EC Low Voltage Directive 
2006/95/EC and EC Electromagnetic Compatibility Directive 
2004/108/EEC based on its design and type, as brought into circulation 
by us.