IES-321 Transformer Protection
IES-321 is designed specifically to protect various type of power transformers, including two-winding transformers, three-winding transformers as well as shunt reactors in 110kV voltage level and below. The device contains control measurement and monitoring functions. With its modular structure as well as flexible and powerful engineering tool, IES-321 offers future-oriented system 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.
IEEE
IEC
Features
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01
Multiple Funtion
Highly integrated functions. The main protection and backup protection can be configurated integrated and separately.
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02
Advanced Principle
Provides a variety of inrush current blocking methods. The self-adaptive blocking criterion makes the protection act quickly even when the no-load transformer is switched onto a slight fault.
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03
High Sensitivity
For single-phase ground fault inside the transformer, the zero-sequence differential protection has high sensitivity.
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04
Widely Application
The differential protection can be expanded up to 3 transformer sides. Any side can be taken as the reference side. With various corner modes, the transformer corner can be set flexibly.
Technical Specifications
Download
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Standard
IEC 60225-1: 2009
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Dimensions (W×H×D)
455×266.7×233.5mm（6U，without mounting bracket)
221.3x266.7x233.5mm（6U 1/2，without mounting bracket)
160.3x266.7x233.5mm（6U 1/3，without mounting bracket) -
Mounting Way
Flush mounted、semi-flush mounted、wall mounted、panel mounted
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Material
Stainless steel
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Protection Class
Front panel:IP54
Side panel:IP40
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 -
Communication Protocol
IEC 61850 Editions 1&2&2.1
IEC 60870-5-103
IEC 60870-5-104
DNP3.0
Modbus
IEC 62439 Parallel Redundancy Protocol (PRP)
IEC 62439 High-availability Seamless Redundancy (HSR)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) -
Clock Synchronization
IRIG-B: IRIG-B via serial port
PPS: Pulse per second (PPS) via serial port or binary input
IEEE 1588: Clock message based on IEEE 1588 via Ethernet network
SNTP: Unicast (point-to-point) & broadcast SNTP mode via Ethernet network -
Functions
Transformer differential protection (87T)
Inrush blocking
CT saturation blocking
Overexcitation blocking
CT circuit failure blocking
Amplitude compensation
Phase angle compensation
Reactor differential protection (87R)
Restricted earth-fault protection (64REF)
Phase overcurrent protection (50/51P)
Earth-fault protection (50/51G)
Tel : +021-61610502
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