Introduction
CSENEX Series offers a compact Multi-functional Over-current protection solution for
Feeder, Generator, Motor & Transformer segment.
CSENEX-I Family of protective relays are numeric relays that provides multi protection and
monitoring with reliable and fast protection solution in a single unit.
In this family of CSENEX series, the CSENEX-I 250 is an feeder protection solution which
has fast, sensitive and secure protection for feeder internal & external faults.
CSENEX-I offers different model based features to cover the wide range of user.
Protection Features
u Three phase time over current protection (51)
u Three phase instantaneous protection (50)
u Earth time over-current (51N)
u Earth instantaneous over-current (50N)
u Circuit breaker failure protection (50BF)
u Harmonic Blocking (50H)
u Cold Load Pickup (62 CLD)
u Trip Circuit Supervision (74TC)
u Current unbalance / NPS (46) *
u Broken conductor (46BC) *
u Thermal over-load (49) *
Hardware
u Measures true RMS with DFT filter
u 4 Current analog inputs for phase & earth fault current
u 6 Digital Inputs (Max.)
u 6 Digital Outputs (Max.)
u 16 x 2 Alpha-numeric LCD
u RS-485 & USB communication
u LEDs for Pickup & fault annunciation
Features
u 1A & 5A rated CT input (programmable)
u Non-draw out Design
u DI/DO programmable matrix
u Protection blocking through DI
u Fault recorder, Event recorder
u Communication (Local & Remote)
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