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Protection Relays
Protection relays are essentially monitoring devices that keep a watchful eye over the electrical circuits and equipment, such as transformers, generators, and transmission lines. They detect abnormal conditions, like short-circuits or overloads, and take necessary actions to mitigate these problems. The primary action typically involves sending a signal to breakers to disconnect the faulty section from the rest of the system. This action prevents further damage, possible blackouts, or safety hazards.
The principle behind the operation of relays is based on the measurement of electrical quantities like current, voltage, frequency, and sometimes temperature. Depending on these measurements, a relay can determine whether the system is operating within safe parameters or not.
There are different types of protection relays, and they can be categorized based on their function, construction, or operating mechanism. For instance, there are distance relays that operate depending on the impedance between the relay location and the fault point, differential relays that function by comparing the difference between input and output electrical quantities, and overcurrent relays that respond to excessive currents.
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$943.92
Eaton EMR-3MP0-ADAPTER - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62 in x 6.82 in x 8.06 in (HxWxD)
$718.73
Eaton ESERPROJBEZELKIT - The EDR-5000 Distribution Protection Relay is a versatile microprocessor-based solution designed for protecting feeder circuits at all voltage levels. It can serve as primary protection for feeders, mains, tie circuit breakers, and backup protection for transformers, high voltage lines, and differential protection. The relay features comprehensive current, voltage, and frequency protection and metering capabilities in a compact design. With multiple current and voltage inputs, it offers various protection functions such as directional overcurrent, voltage restraint, sync check, reverse power, reverse vars, and more. The relay's programmable logic functions are suitable for various transfer schemes. It provides autoreclosing logic for transient faults and a maintenance mode for enhanced safety during maintenance work. The relay offers communication ports for local networking using Modbus-RTU and optional Ethernet and IEC-61850 protocols, along with a user-friendly interface that includes programmable LEDs, a keypad, and a display for direct programming and data retrieval. Monitoring features include fault data logs, oscillography, and sequence of events reporting - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months
$12582.47
Eaton EMR-3000-2B0DB0 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62" x 6.82" x 8.06" (HxWxD)
$11024.93
Eaton EMR-3000-2B0DA1 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62" x 6.82" x 8.06" (HxWxD)
$11024.93
Eaton EMR-3000-2A0DA1 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62" x 6.82" x 8.06" (HxWxD)
$10846.63
Eaton EMR-3000-2A0DA0 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62" x 6.82" x 8.06" (HxWxD)
$6329.71
Eaton EDR-3000-2A0CA0 - The EDR-3000 Feeder Protection Relay is a microprocessor-based overcurrent relay designed for both ANSI and IEC applications, offering versatile three-phase and ground overcurrent protection. Operating from AC or DC control power, the relay is suitable for primary feeder circuit protection, transformer primary protection, and backup to differential protection. With its true rms and fundamental sensing, the relay accommodates various current transformer ratios and displays metered current in primary amperes, secondary amperes, or per unit values. Featuring an intuitive LCD display and operations panel, the relay supports Zone Selective Interlocking for optimized protection coordination. Its communication capabilities enable remote operation and data transfer to a host computer, ensuring efficient and reliable power distribution system management - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62" x 6.82" x 7.49" (HxWxD)
$13126.69
Eaton EMR-4000-2A0EA1 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.7" x 9.72" x 8.06" (HxWxD)
$12985.94
Eaton EMR-4000-2A0EA0 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.7" x 9.72" x 8.06" (HxWxD)
$13389.41
Eaton EMR-4000-2A0DA1 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.7" x 9.72" x 8.06" (HxWxD)
$13239.28
Eaton EMR-4000-2A0DA0 - The EMR Series motor protection relays are multifunctional microprocessor-based devices designed to protect motors of all sizes at various voltage levels, commonly used with medium to high voltage motors. They offer comprehensive motor protection, monitoring, and control functions, including thermal and locked rotor protection, phase and ground overcurrent elements, jam and stall protection, unbalance and underload protection, and more. They feature metering capabilities like amperes measurement, THD analysis, and temperature monitoring. The relay's monitoring features encompass oscillography, fault data logs, trend recording, and clock timestamping. The control functions include reduced voltage starting, load shedding, emergency override, and more, all configurable through programmable inputs and outputs. Communication capabilities involve local and remote communication ports with various protocols, facilitating remote monitoring and control - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.7" x 9.72" x 8.06" (HxWxD)
$6706.91
Eaton EDR-3000-2C0CA0 - The EDR-3000 Feeder Protection Relay is a microprocessor-based overcurrent relay designed for both ANSI and IEC applications, offering versatile three-phase and ground overcurrent protection. Operating from AC or DC control power, the relay is suitable for primary feeder circuit protection, transformer primary protection, and backup to differential protection. With its true rms and fundamental sensing, the relay accommodates various current transformer ratios and displays metered current in primary amperes, secondary amperes, or per unit values. Featuring an intuitive LCD display and operations panel, the relay supports Zone Selective Interlocking for optimized protection coordination. Its communication capabilities enable remote operation and data transfer to a host computer, ensuring efficient and reliable power distribution system management - Eaton E-Series Protection Relay Devices now have a warranty extension of 10 years, superseding the previous warranty of 18 months - 8.62" x 6.82" x 7.49" (HxWxD)