IES-331 Capacitor Protection

The IES-331 is a comprehensive protection, control and monitoring unit for shunt capacitor bank on solidly grounded, impedance grounded, Peterson coil grounded and ungrounded system. With its modular structure as well as flexible and powerful configuration tool, IES-331 offers future-oriented solutions for protection, control automation and monitoring. 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.

Configurable to System Requirements
Multi-Function Capability
Engineered for Long-Term Reliability
Fast Tripping

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Product Highlights Technical Specification Industries We Serve

Product Highlights

Configurable to System Requirements

The number of inputs, outputs, and analog inputs can be flexibly configured.

Multi-Function Capability

Multiple protection functions are integrated into one device.

Engineered for Long-Term Reliability

Unique phase selection element to avoid the problem of wrong selection of multiple phases by using out-of-range phase selection elements.

Fast Tripping

With special processing in CB failure protection, the dropout time of current criterion element is less than 12 ms.

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

Phase overcurrent protection (50/51P); Earth fault overcurrent protection (50/51G); Negative-sequence overcurrent protection (50/51Q); RMS overcurrent protection (50/51R); Phase overvoltage protection (59P); Residual overvoltage protection (59G); Negative-sequence overvoltage protection (59Q); Positive-sequence overvoltage protection (59Pos); Phase undervoltage protection (27P); Under-current protection (37); Breaker failure protection (50BF); Current unbalance protection (60/50); Voltage unbalance protection (60/59); Phase voltage differential protection (87V); Neutral point voltage differential protection (87VN); Impedance protection (21C); Thermal overload protection (49)