Control & Protection Switching Device

CPS is intended to be connected to circuits of rated voltage not exceeding 690V, and rated current from 0.16A to 100A, 50Hz(60Hz) a. C, available for making, carrying and breaking currents under normal conditions including specified operating overload conditions, and also available for making, carrying for a specified time and breaking currents under specified abnormal conditions (such as short-circuit current)

CPS is of modular design, associated and coordinated with the functions of traditional circuit breaker, fuse, contactor, over-load relay, starter, and disconnector, intended to provide both protective and control functions for remotely or local manually controlled circuits, having front indications, signal alarm and time-current characteristics, and also available for control and protection of motors and distribution circuits by using optional modules or accessories.

Applications

With its advantages of integration, module, compact size, high protection degree, high breaking capacity, short ionozation distance, longer life, continuity of service, high reliability and easy installation and maintenance, CPS is suitable for control and protection of motors to be used in the field of metallurgy industry, coal mime industry, iron and steel industry, petrochemical industry, harbors and railway stations ect., and for control and protection of lightings, power transferring, pumps, ventilators and air conditioners inmodern buildings, as well as for controlling and protecting of distribution system, motor control center(MCC), and factories or workshops.

Main technical data

- Two outline dimensions(C and D frame size)
- 3-pole and 4-pole
- Current ratings: 12, 16, 18, 32, 45, 63 and 100A
- Min. Setting current: 0.16A; Max. Setting current: 100A
- Short-circuit break capacity: 35kA for type C(Economic); 50kA for type Y (Standard); 80kA for type H(High capacity).
- Opening time under prospective short-circuit current is 2-3ms, at current limiting of 0.2 and below.

Types of over current releases

- Classification according to working principle
Thermal-magnet release
Intelligent controller
Electronic controller
- Classification according to protections
Motor protection
Distribution protection
- Classification according to operating frequency
Frequent operation
Infrequent operation

The outline dimensions of C and D frames for thermal-magnet release, intelligent controller and electronic controller are as same as their dimensions of installation.

Type and applications of modules and accessories

- CPS
Having short-circuit protective function, remote control, local manual control and indications.
- Over load release
Having over load and over current protective functions, and adjustable current settings(including over loadinverse time delay, and over current definite time delay)
- Auxiliary switches
Having electrical control and indication functions, operating with main contacts.
- Alarm contacts
Having indication functions of working state and failure, switching with operating mechanism
- Auxiliary contacts for isolation indication
Having indication of isolation of control circuit and auxiliary circuit, switching with operating mechanism (G11 or G20available for selection).
- Shunt release
Having function forremote tripping and breaking of circuits.
- Remote resetting
Having function forremote setting or resetting.
- Front operating mechanism
Available for mounting on the front plate of a switch board, relizing easy operation of CPS. Various types are available for different mounting directions.
- Power module for control circuit
Available for changeover of control circuit from AC to DC.