ABB’s IED 670 series provides reliable, efficient and flexible protection, monitoring and control for all applications in sub-transmission and transmission systems.
IED 670 products are based on a common powerful hardware platform and an extensive hardware-independent, modular function library. This opens up a whole new range of possible applications. It also offers the potential to achieve an exceptional cost/performance ratio by combining multi-object protection and control capability with the traditional protection of an IED. Setting, commissioning and maintenance procedures are made fast and simple since the user only has to learn about one product to know them all.
The state-of-the-art IED 670 series has inherited the time-proven algorithms from ABB’s previous generations of IEDs. These algorithms have been further developed, and together with the IED 670’s outstanding I/O capability series they set a new standard for performance. So, for example, one IED can control several bays with complete monitoring and back-up protection.
Designed to communicate
The IED 670 series complies with the stringent requirements of the IEC 61850 standard. They also interoperate with other IEC 61850 compliant IEDs tools and systems to provide extensive communication capabilities and interfaces enabling unrivalled compatibility for new and retrofit installations.
Easy to handle
Each IED 670 device is delivered ready-to-use, pre-configured and type-tested for different types of application. This makes them easy to use, from selection to operation and maintenance. There are also a number of option packages available for each device, so they can easily be adapted to meet specific customer requirements.
Simplified solutions
The IED 670 series offers simplified solutions for complex applications that previously required the installation of several discrete pieces of equipment. This approach reduces costs and minimizes spare parts handling. For example, a one and a half breaker arrangement that would normally need seven individual IEDs can now be replaced by just two RED 670 devices that provide both line distance and line differential protection and monitoring functions as well as the switchgear control plus functions such as synchro-check, breaker failure and so on.
Another typical smart solution offered by the IED 670 concept is for transformer and shunt capacitor bank protection. Here, thanks to its 24 analogue inputs, just one RET 670 device can provide a comprehensive suite of protection and control functions.
GPS loss – no problem
ABB’s most recent development has focused on eliminating any concerns regarding the potential loss of the GPS (Global Positioning System) signals used to time synchronize the RED 670 line differential protection devices with a very high level of accuracy.
Locally measured current values are time stamped by the RED 670 and the records are transmitted to the other end of the protected line. Here, a second RED 670 compares this information with its own measured values and then makes the appropriate ‘smart’ decision about tripping the circuit breaker. Should the device lose its GPS signal – possibly due to bad weather – it is essential that the device does not make an incorrect tripping decision.
Based on extensive site experiences in different utilities, ABB has refined the GPS functionality of the RED 670 to improve security and functionality.
IED 670 series devices
- REL 670 for line distance protection, monitoring and control
- RED 670 for line differential protection, monitoring and control
- RET 670 for transformer protection, monitoring and control
- REB 670 for busbar protection and monitoring
- REC 670 for bay control
- REG 670 for generator protection and monitoring