Earth Fault Relay

The 'CGI 14N/C' Numerical Protection Relay is a fully digital relay based on microprocessor technology with analogue to digital conversion of the measured values and subsequent numerical processing. It uses specialized digital signal processor (DSP) as the computational hardware, along with associated software.
The relay has feature of IDMT as well as instantaneous protection for both over current & earth elements with breaker failure protection (50BF). The relay can be field programmed as 3O/C + 1E/F or 2 O/C + 1E/F + 1SE/F or 1RE/F (optional). The front panel features a 6-button keypad & a 16x2 LCD display that provides an easy user interface.

• Features

• Breaker Failure detection
• Communication port: RS485 / RS232 (optional)
• Programming through local Key pad
• Selectable Definite Time or IDMT curves as per IEC standards
• Rated input current selectable 1A or 5A
• Password protection to guard against unauthorized access & editing of settings
• Recording of ten last fault records with time stamping
• Parameterization & downloading of records through "CG View" software (optional)
• Mounting Case : Drawout / Non Drawout

• Application

• Primary circuit protection on distribution networks at any voltage level
• Backup/auxiliary protection for transformers, generators and motors