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Feeder Protection and Control Relay
ABB REF615C_D is a feeder protection and control relay used to protect and control feeders in power systems. It has the following functions and working principles:
Function:
Overcurrent protection: Monitor the current and perform overcurrent protection according to the preset protection curve to prevent equipment damage when the current exceeds the set value.
Overvoltage protection: Monitor the voltage and perform overvoltage protection according to the preset protection curve to prevent equipment damage when the voltage exceeds the set value.
Undervoltage protection: Monitor the voltage and perform undervoltage protection according to the preset protection curve to prevent equipment failure when the voltage drops below the set value.
Short circuit protection: Monitor the current and perform short circuit protection according to the preset protection curve to prevent equipment damage caused by short circuit current.
Ground fault protection: Monitor ground current and perform ground fault protection to prevent equipment damage caused by ground current.
Overload protection: Monitor the current and perform overload protection based on the set value to prevent equipment damage when the current exceeds the rated value.
Automatic reclosing function: After fault recovery, automatic reclosing operation is carried out to reduce power outage time.
Communication function: Support communication with SCADA system or other monitoring systems to achieve remote monitoring and control.
Working principle: ABB REF615C_D receives current and voltage signals from the power system and performs protection according to preset protection curves. It determines whether the current and voltage exceed the set value through internal protection algorithms and logic. If they exceed the set value, corresponding protection functions are triggered, such as the tripping operation of the circuit breaker. At the same time, REF615C can also perform data collection and communication, transmitting protection and control information to the upper monitoring system.
Parameter introduction:
Rated voltage: configured according to the rated voltage of the power system, usually 110V, 220V, or 380V, etc.
Rated current: configured according to the rated current of the power system, usually 5A or 1A.
Protection function: Support multiple protection functions such as overcurrent protection, overvoltage protection, undervoltage protection, short circuit protection, ground fault protection, and overload protection.
Communication interface: Supports communication protocols such as IEC 61850 and Modbus, and can communicate with SCADA systems or other monitoring systems.
Working temperature range: usually -40 ° C to 70 ° C, suitable for various environmental conditions.
Installation method: Supports wall mounted or DIN rail installation for easy installation and maintenance.
Overall, ABB REF615C_D is a relay used for feeder protection and control, with multiple protection and communication functions. It protects feeder equipment in the power system by monitoring current and voltage, and performing protection operations based on preset protection curves. It is suitable for various power systems and has flexible parameter configuration and communication interfaces.
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