ABB SPCJ4D34-AA CURRENT/EARTH-FAULT MODULE
ABB SPCJ4D34-AA CURRENT/EARTH-FAULT MODULE
Integrated three-phase differential relay, overcurrent relay and earth-fault relay Stabilized three-phase differential relay providing winding short-circuit and interturn fault protection for two-winding transformers and generator-transformer units and winding shortcircuit protection for generators. Earth-fault protection for transformer HV and LV side windings according to the desired principle: the stabilized differential current principle, the high-impedance principle, the calculated or measured residual current principle or the neutral current principle Three-stage overcurrent protection for transformers and generators and two-stage back-up protection for earth-fault protection The operation characteristic of the differential relay easily adapted for different applications Short operate times, even with partially saturated current transformers Stabilization prevents unwanted operations at faults outside the protected area and transformer inrush currents Blocking based on the ratio of the second harmonic and the fundamental component of the differential current prevents unwanted operations at transformer inrush currents Blocking based on the ratio of the fifth harmonic and the basic frequency component of the differential current prevents operation in harmless situations of transformer overexcitation - can be eliminated if the ratio of the fifth harmonic and the basic frequency component increases at high overvoltages No interposing transformers are needed for the protection of two-winding transformers - numerical vector group matching on HV and LV side Wide CT ratio correction range - accurate correction allowed by digital setting Sensitive phase current and phase angle displays facilitate the checking of measurement circuit connection and vector group matching Four trip and four signal relay outputs available to the protection design engineer Five programmable external control inputs intended for the indication and retransmission of alarm and trip signals of gas relays, oil temperature sensors and other sensors of transformer auxiliary devices Adjustable CBFP operate time to improve reliability of operation Integrated disturbance recorder capable of recording currents and digital signals - signals to be used for triggering selectable High immunity to electrical and electromagnetic interference allows the relay to be used in severe environments High availability and system reliability due to continuous supervision of hardware and software
Delivery:
Warranty:
All our products are covered by our own warranty.
Payment method:
Quick Quote: Receive price and availability today!
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.
All new products and surplus products of the industrial intelligence industry, as well as the discontinued products of the original manufacturers. We are not an authorized distributor or representative of any of the above manufacturers (except for brand authorization). The trademarks, brand names and brands appearing in this agreement are the property of their respective manufacturers.
COPYRIGHT© 2003-2024 Copyrighted
Phone(WeChat/Whatsapp)
+086-18144100983
No 1134 Jimei North Road, Jimei District
Hong Kong Office:
Guan Tang District, Hong Kong,