REJ603 自供电馈线保护

描述

REJ603 自供电馈线保护

REJ603 自供电馈线保护

Entry-level protection for secondary distribution networks
REJ603 is designed for selective short-circuit and ground fault protection of feeders in secondary distribution networks as well as protection of small and medium-sized transformers in utilities and industry. REJ603 is a current transformer-powered digital feeder protection relay designed for applications where auxiliary power is unavailable or not guaranteed, making it ideal for installation in remote locations. The relay is mainly used for loop cabinet and secondary distribution switchgear in distribution network. Relay models 1.5 and 3.0 support special and conventional current transformers, respectively.

Radius
Overcurrent and ground fault protection

Product advantage
High adaptability for low energy trip coil operation
Built-in manual reset electromechanical mark
Powered via a front-facing USB port, no built-in battery is required and event/fault information can be accessed when CT power is unavailable
Fast debugging is achieved through protection and selective testing of binary output contacts, including circuit breaker test trip
Fault analysis with Event logging/interference logging (version 3.0)
Extensive self-monitoring of relay hardware and software

Main feature
For solid ground, resistance ground, or isolated cable or transformer feeders in networks where auxiliary power cannot be used or guaranteed
Nondirectional overcurrent, ground fault protection, thermal overload protection, inrush current detection, remote trip and measurement
Low energy trip output and bistable output trip circuit breakers
Interference logs can be downloaded from the front-facing USB port or can be used to power relays without an auxiliary device via a desktop or laptop or mobile power supply. To supply; Features for use with USB-powered relays without current input (version 3.0)
Designed for ring network cabinets (RMUs) and compact switchgear