Overview
CSC-211 Multifunction Protection IED is versatile IED designed for protection, control and monitoring of feeders. The devices can be used for line protection in networks that are grounded, low-resistance grounded, ungrounded, or of a compensated neutral point structure. It is able to supervise primary apparatus such as circuit breakers and disconnectors.

Functions

Current protection

– Overcurrent protection

– Earth fault protection

– Neutral earth fault protection

– Sensitive earth fault protection

– Negative-sequence overcurrent protection

– Thermal overload protection

– Overload protection

Voltage protection

– Overvoltage protection

– Undervoltage protection

– Displacement voltage protection

– Breaker protection and control function

– Breaker failure protection

– Dead zone protection

– Synchro-check and energizing check

– Auto-recloser

– Three-pole tripping

Capacitor bank protection

– Unbalanced current protection

– Unbalanced voltage protection

– Undercurrent protection

Load shedding function

– UnderFrequency load shedding function

– Undervoltage load shedding function

– Overload load shedding function

Secondary system supervision

– CT secondary circuit supervision

– VT secondary circuit supervision

Other functions

– Fast busbar protection using reverse interlocking

Control functions

– Circuit breaker, disconnector and other switching devices control

Monitoring functions

– Position of circuit breaker, disconnector and other switching device monitoring

– Circuit breaker status supervision

– Auxiliary contacts of circuit breaker supervision

– Self-supervision

– Fault recorder

Front communication port

– Isolated RS232 port

Rear communication port

– 0-1 isolated electrical RS485 communication ports

– 0-2 Ethernet electrical/ optical communication ports

– Time synchronization port

Communication protocols

– IEC 61850 protocol

– IEC 60870-5-103 protocol

Features

Extensivemultifunction IED including protection, control and monitoring functions

Three pole tripping required in sub-transmission and distribution network

A complete protection functions library, include:

– Overcurrent protection

– Earth fault protection

– Neutral earth fault protection

– Sensitive earth fault protection

– Negative-sequence overcurrent protection

– Thermal overload protection

– Overload protection

– Overvoltage protection

– Undervoltage protection

– Displacement voltage protection

– Circuit breaker failure protection

– Dead zone protection

– Synchro-check and energizing check

– Auto-reclose function for three-phase reclosing

– Unbalanced current or voltage protection

– Undercurrent protection

– load shedding function

– Voltage transformer secondary circuit supervision

– Current transformer secondary circuit supervision

Fast overcurrent/busbar protection scheme using IEC61850 GOOSE-message

CB status supervision

Features

* Adopt new generation general hardware and software platform and modular design, 32-bit embedded processor with powerful data processing ability.

* High EMC performance guarantees the stability of device operation.

* Provides Profibus-DP/RS485(Modbus) field-bus interfaces and perfect network construction solutions for users.

* Detailed failure events record as data information for operation optimization and fault analysis.

* Powerful fault analysis, overall fault and operation information recording of whole fault process and  harmonic wave analysis . The recorder can be initiated by motor starting.

* Convinient maintenance, with remote firmware upgrading, and remote setting inspection.

* Friendly Human Machine Interface, easy operation and detailed operation information.