• C And S Electric Limited

Over current trip device

Microprocessor based over current trip device from The Control Group, is a true RMS sensing device that do not require external supply for its basic function.The device is self-powered by the built-in current transformer and provides highest degree of system protection coordination. This allows error-free and user-friendly setting of current and time delay. Provision for remote tripping/electrical reset is optional feature with overload relay. The unit does self-monitoring of trip and indicates it by blinking indication. The device is available in two types, i.e., IT-100 for industrial application and IT-G for generator protection. Technical specifications; No mal-operation due to external disturbances. Built-in operation check function. Visual fault discrimination by LEDs Three phase and earth fault in one single compact unit. Function blocking facility provided. Characteristics curves IT-100 (for industrial applications): Setting of Over Load Current (LTD) LTD Time: Minimum Setting - 2.5 Sec. Setting Range: 2.5 To 35 Sec (in steps of 2.5 sec) Setting of Short Circuit Current (STD) STD Time: Minimum Setting - 50 ms Setting Range 50-550 ms (in steps of 50 ms) Ground Fault Setting (GFT) GFT Time: Minimum Setting - 50 ms Direct acting instantaneous trip with settings: 5-50 KA. Adjustable overload settings: 80-120 per cent.