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IES-501 Busbar Protection
IES-501 centralized busbar relay integrates busbar differential protection, bus coupler/section protection (includes overcurrent protection, switch-onto-fault protection, dead zone fault protection and breaker failure protection) and feeder protection (includes overcurrent protection, dead zone fault protection and breaker failure protection).With its modular structure as well as flexible and powerful configuration tool, IES-501 offers future-oriented busbar solutions with high investment security and low operating costs. The device is freely programmable. Functional logic diagrams can be developed with the use of graphical programming tool which also supports the configuration of binary inputs and outputs, analog inputs, control buttons, LEDs, disturbance recorder, event recorder, and user interface. Freely programmable logic makes it possible to modify typical functional logic diagrams considering a peculiar nature of the protected object. Three basic types of standard 19”case help to choose the most appropriate solution.
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Multi-Function Capability
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Engineered for Broad Deployment
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Advanced Operating Principle
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Fast Tripping
Product Highlights
Multi-Function Capability
Highly integrated with complete functions, including phase-segregated current differential protection, CB failure protection, overcurrent protection, dead-zone protection, etc.
Engineered for Broad Deployment
Applies to multiple single-line diagrams, supporting up to 4 buses and 30 bays.
Advanced Operating Principle
In case of external fault, the differential protection has excellent anti-saturation feature for CT measurements. When the CT's transition time is not less than 3 ms, it does not malfunction during external faults and operates quickly during internal faults.
Fast Tripping
Adopts an impedance-weighting based adaptive anti-saturation method. It is not affected by the load current, and the action time is less than 15ms.
Technical Specification
Dimensions (WxHxD)
455 mm×266.7 mm×233.5 mm; (6U height, 1/1 chassis, excluding mounting bracket); 221.3 mm×266.7 mm×233.5 mm; (6U height, 1/2 chassis, excluding mounting bracket)
Mounting Way
Surface mounting, flush mounting, semi-flush mounting, wall mounting, and panel mounting
Material
Stainless stee
Protection Level(Front Panel)
IP54
Protection Level(Side Panel)
IP40
Protection Level(Rear Panel)
IP30
Communication Ports
2 or 4 100Base-TX RJ45 Ethernet ports; 2 or 4 100Base-FX optical ports; 2 RS-485 serial ports for SCADA communication; 1 RS-485 serial port for clock synchronization; 1 front RJ45 port for debugging
Clock Synchronization
IRIG-B; PPS; IEEE 1588; SNTP
Functions
Busbar differential protection (87B); BC/BS dead zone fault protection (50DZ); BC/BS dead zone differential protection (87DZ); Feeder dead zone fault protection (50DZ); BC/BS switch-onto-fault (SOTF); protection (50SOTF); Breaker failure protection (50BF); Phase overcurrent protection (50/51P); Earth fault overcurrent protection (50/51G); Phase overvoltage protection (59P); Phase undervoltage protection (27P); Over-frequency protection (810); Underfrequency protection (81U); Frequency rate-of-change protection (81R)
