ABB|REJ603BBB10NN3XC| Self-Powered Feeder Protection Relay
Description
The ABB REJ603BBB10NN3XC is a self-powered feeder protection relay designed for secondary distribution networks. It integrates with Ring Main Units (RMU) and compact switchgear, providing comprehensive protection without the need for an auxiliary power supply.
Features
- Self-Powered: Operates using power derived from main current transformers.
- Compact Design: Suitable for integration into RMUs and compact switchgear.
- Comprehensive Protection: Offers three-phase overcurrent and earth-fault protection.
Technical Specifications
- Product Name: Self-Powered Feeder Protection Relay REJ603
-
Protection Functions:
- Three-phase overcurrent protection (low-set stage: IEC 3I> / ANSI 51; high-set stage: IEC 3I>> / ANSI 50/51)
- Earth-fault protection (low-set stage: IEC I₀> / ANSI 51N; high-set stage: IEC I₀>> / ANSI 50N/51N)
- Transformer inrush detection (IEC 3I2f> / ANSI 68)
-
Inputs and Outputs:
- Three CT inputs for phase current and internally calculated earth-fault measurement
- One CBCT input for external earth fault measurement
- One binary input for remote trip
- One impulse output for low energy trip coil
- Self-Supervision: Continuous monitoring of hardware and software status, with IRF LED indication for faults.
- Testing: Special CTs with test windings for simulating primary current.
- Optional HMI: Battery-powered touch screen interface for advanced functionalities like segregated trip indication and fault records.
ABB|REJ603BBB10NN3XC| Self-Powered Feeder Protection Relay


ABB|REJ603BBB10NN3XC| Self-Powered Feeder Protection Relay
Description
The ABB REJ603BBB10NN3XC is a self-powered feeder protection relay designed for secondary distribution networks. It integrates with Ring Main Units (RMU) and compact switchgear, providing comprehensive protection without the need for an auxiliary power supply.
Features
- Self-Powered: Operates using power derived from main current transformers.
- Compact Design: Suitable for integration into RMUs and compact switchgear.
- Comprehensive Protection: Offers three-phase overcurrent and earth-fault protection.
Technical Specifications
- Product Name: Self-Powered Feeder Protection Relay REJ603
-
Protection Functions:
- Three-phase overcurrent protection (low-set stage: IEC 3I> / ANSI 51; high-set stage: IEC 3I>> / ANSI 50/51)
- Earth-fault protection (low-set stage: IEC I₀> / ANSI 51N; high-set stage: IEC I₀>> / ANSI 50N/51N)
- Transformer inrush detection (IEC 3I2f> / ANSI 68)
-
Inputs and Outputs:
- Three CT inputs for phase current and internally calculated earth-fault measurement
- One CBCT input for external earth fault measurement
- One binary input for remote trip
- One impulse output for low energy trip coil
- Self-Supervision: Continuous monitoring of hardware and software status, with IRF LED indication for faults.
- Testing: Special CTs with test windings for simulating primary current.
- Optional HMI: Battery-powered touch screen interface for advanced functionalities like segregated trip indication and fault records.