About ABB RET316 4 RELAY

 ABB RET316*4 RELAY 

Features One three-phase differential function for two- or three-winding transformers No interposing CTs Current compensation of ratio and phase Programmable facility on inputs and outputs to provide trip and/or indication of external protection features (Buchholz, temperature, etc.) Overcurrent stage in differential circuit Overcurrent functions on high- and low voltage side Directional inverse and definite time overcurrent protection Overvoltage function (by adequate hardware version) Thermal overload function Distance protection- Overcurrent and underimpedance starters- Five distance zones (polygon for forwards and reverse measurement)- V.t. supervision- Power swing blocking- Load-compensated measurement Overexcitation Frequency Rate-of-change of frequency Breaker-failure protection Standard wiring diagram regardless of power transformer group Compact design, few hardware units, part of the 316-family Modular software Continuous self-monitoring and diagnosis Fully numerical signal processing Menu-driven user interface program CAP2/316 based on Windows Additional project-specific logic functions can be programmed with CAP316 Event recording and measuring values Three serial interfaces:- Front port connector for local connection of a personal computer- Back plane interface for remote communication with a station control system: LON, IEC 60870-5-103, MVB, SPA- Back plane interface for process bus: MVB Available for 19" rack mounting in a panel, surface or flush mounting Four independent, user-selectable parameter sets able to be activated via binary input Multi-activation facility of the available functions

MV and HV systems with distance or longi-Load-compensated measurementIndependent measurement per phaseeatures

Application

MV and HV systems with distance or longi-Load-compensated measurementIndependent measurement per phase-inrush restraint function

Advanced Monitoring and Protection

The ABB RET316 4 Relay guarantees exceptional protection by continuously supervising electrical motors and generators, detecting phase faults, earth faults, and unbalanced loads. It also provides robust thermal overload protection, ensuring both safety and equipment longevity. The relay offers rapid operate times of less than 35 ms and includes both LED status indicators and an LCD display for convenient local monitoring.


Versatile Communication and Configuration

This relay supports both Modbus and IEC 60870-5-103 communication protocols, facilitating seamless integration into various automation systems. Configurable digital outputs and remote reset options elevate adaptability, while password-protected parameter settings enhance security and prevent unauthorized alterations. Event and fault records are maintained in memory for comprehensive system analysis.


Durability and Compliance Across Environments

The ABB RET316 4 Relay is engineered to operate in challenging conditions, with ambient and working temperatures ranging from -10C to +55C and storage tolerance up to -40C. The high insulation resistance, robust mechanical life, and adherence to IEC and RoHS standards make it suitable for demanding industrial applications. Its plug-in terminal type and screw clamp supply terminal ensure straightforward installation and reliable operation.