ABB Feeder protection and control REF601 and REJ601 BD446NN1XG
ABB 1MRK002122-AB RED670 I/O-modules 670 series
The REF601 is a dedicated feeder protection and control relay. The REJ601 is an overcurrent protection relay without breaker control. These relays are intended for the protection of utility substations and industrial power systems within primary and secondary distribution networks. They are members of ABB’s Relion® product family and part of its 605 series. These relays, provide an optimized composition of protection, monitoring and control functionality in one unit, with the best performance usability in its class and are based on ABB’s in depth knowledge of protection and numerical technology.
The REF601 and REJ601 offer three-stage overcurrent and two stage ground-fault protection functions. The transformer inrush detector function is incorporated to prevent unwanted tripping due to energizing of transformers. The REF601 and REJ601 offer three-stage overcurrent and two-stage ground fault protection functions. The low-set stages for overcurrent and ground fault protection are equipped with selectable characteristics – Definite Time (DT) and Inverse De finite Minimum Time (IDMT). The relays feature standard IDMT characteristics according IEC 61255-3 - Normal Inverse, Very Inverse, Extremely Inverse, Long-time Inverse. They also feature characteristics according to ANSI C37.112 - Moderate Inverse, Normal Inverse, Very Inverse, and Extremely Inverse. The relays also have a special characteristic RI Inverse (RI) for better coor dination with the rest of the network. Additionally the relays also support two setting groups. The REF601 and REJ601 also offer thermal overload protection for feeders, cables and transformers. Other protections inclu de negative phase sequence protection, phase discontinuity protection and circuit breaker failure protection. The relays also have an auto-recloser option for overhead line feeders.
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Replacing an electrical equipment unit in a plant is a complex task that requires careful planning and execution to ensure safety and minimize downtime. Here is a general step-by-step guide on how to replace electrical equipment in a plant:
Pre-Planning:
Safety Precautions:
Shutdown Procedures:
Disconnection:
Removal of Existing Equipment:
Installation of New Equipment:
Testing and Commissioning:
Documentation:
Training:
Startup:
Throughout the process, it’s important to work closely with a team that includes electrical engineers, technicians, and maintenance staff. Communication is key to a successful equipment replacement. Additionally, always adhere to local electrical codes and standards to ensure compliance and safety. If the task is beyond the expertise of in-house staff, consider hiring a professional contractor experienced in industrial electrical work.
Obtaining industrial automation programming software typically involves the following steps:
Identify Your Needs:
Research Software Options:
Contact Equipment Manufacturers:
Purchase or Download:
Academic or Evaluation Versions:
Open Source Options:
Licensing:
Training and Support:
Legal and Compliance:
Installation and Setup:
Here are some common ways to obtain industrial automation programming software:
Remember to keep your software updated to benefit from the latest features and security patches. Also, ensure that you have the necessary backup and recovery procedures in place to protect your programming work.
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