Beijing Sifang CSC-236 Digital Motor Differential Protection Device

1.1 Device Introduction
This device is suitable for differential protection against internal faults in large (above 2000kW) asynchronous or synchronous motors. It works in conjunction with the matching CSC-237 Digital Motor Integrated Protection, Measurement, and Control Device to form a complete protection system for large motors.
1.2 Main Functions
1.2.1 Protection Functions
Differential instantaneous protection responding to faults within the protection zone
Differential protection with percentage restraint responding to faults within the protection zone
TA broken wire blocking protection with alarm
Differential current over-limit alarm detection function
Non-electrical quantity protection
Fault recording
Various event SOE, etc.

CSC-236 Digital Motor Differential Protection Device
Rated Parameters
a) DC voltage: 220V or 110V (as per order requirements);
b) AC voltage: 100V or 100/√3 V;
c) AC current: 5A or 1A (as per order requirements);
d) Frequency: 50Hz/60Hz.
Main Features of the Device
The device has the following features:
a) Utilizes an embedded 32-bit microprocessor and a 14-bit data acquisition system, providing strong data processing capabilities;
b) Flexible programmable protection and control logic function, enabling graphical editing of protection and control schemes to meet personalized needs;
c) Features virtual testing function, enabling automatic teleindication point checking, automatic SOE event triggering, fault simulation, and online simulation of control schemes;
d) Provides communication interfaces based on optical Ethernet, LonWorks fieldbus, and optical 485, with a rich built-in protocol library, offering users comprehensive networking solutions;
e) Records equipment operation information and fault information, providing sufficient data for operation optimization and accident analysis;
f) A measurement and metering system completely independent of the protection CPU system, meeting the requirements for operation monitoring and remote automatic meter reading;
g) Comprehensive software and hardware self-check functions and non-adjustable circuit design, making installation and debugging simpler;
h) User-friendly human-machine interface with easy operation, eleven indicator lights showing the device operation status in real-time, and a clear Chinese LCD display;
i) Supports network time synchronization and GPS pulse time synchronization, supports IRIG-B code time synchronization, and has a hardware clock system;
j) PC-based auxiliary analysis software, easily achieving functions such as protection and control logic customization, accident analysis, and virtual testing;
k) High-standard electromagnetic compatibility performance, sealed chassis design, meeting stringent requirements for device installation in switchgear;
l) Can be centrally grouped on panels or dispersed installed on switchgear or locally installed in outdoor switchyards.