Overview

CPS series control and protection switchgear is a new type of low-voltage electrical appliance. Its product category code is "CPS", which is the abbreviation of English "Controland ProtectiveSwitchingDevice". NMCPS series control and protection switchgear is integrated on single structure products. The internal coordination and control functions can replace many traditional separate components such as circuit breakers (fuse), contactors, overload (or overcurrent, phase failure) protection relays, starters, and isolators. Distance control and local manpower control have the functions of control operation, with coordinated time-current protection characteristics, control and protection coordination, continuous operation after short circuit, high breaking capacity, small arcing distance, and long life. Long, with the characteristics of adjustable protection current, easy to operate, complete and complete accessory modules, can control and protect motor load and distribution load.

Product features and features

NMCPS combines the main functions of "circuit breaker (fuse) + contactor + thermal relay" with intelligent "self-mating" control and protection. A single product with a separate structure can ideally achieve the combined functions of the above multiple products. Its protection features are “self-cooperating” and can output a variety of signals for users to choose. Its protection can be perfect and reasonable. "Single type has (basic type, fire type F, isolated type G, leakage type L), combined type (two-speed type D, star-delta type small, reversible type N, auto-decompression type z), dual power conversion Switch type S.

NMCPS is an intelligent multi-function low-voltage switchgear. It is an advanced intelligent multi-function low-voltage switchgear developed based on advanced circuit breakers, contactors, thermal relays and other technologies and software technologies. All of its control signals and data are sampled and processed by the intelligent control unit and current transformer of the 8-bit microcontroller to achieve data timing and inverse time control. It can protect the equipment that needs protection and control comprehensively and accurately. This versatile control and protection device greatly reduces the variety and quantity of components required in the line, providing an ideal base component for the design of low-voltage power distribution and control systems.

Use and scope of application

NMCPS series products are mainly suitable for AC 50Hz, rated voltage 400V, rated current from 0.16A to 125A circuit. It is used to connect, carry and break the current under the specified overload conditions under normal conditions and can switch on, carry and break the abnormal current (such as short-circuit current) under the specified conditions. The superior performance of NMCPS has been widely used in construction, Textile, metallurgy, petrochemical, hydraulic engineering, water treatment, machinery and equipment, complete sets of equipment, ships, food processing and motor control centers.

It complies with the standard Compulsory certification of GB14048.9-2008 national compulsory product.

Model meaning

(Note 1): Indicates the grade current of the frame:

(Note 2): Indicates the rated current set at the time of shipment. The short-circuit action current is set according to this current.

For example, if the rated current is 12A, but there is no 12A in the rated current of the main body, the rated current of the 16A main body should be set to 12A, and the frame current of 10A cannot be used for setting.

(Note 3):

02 Auxiliary contact pairs: two normally open one normally closed + one normally open (fault) one normally open (short circuit).

06 Auxiliary contact pairs: three normally open three normally closed + one normally open (fault) one normally open (short circuit) 09 auxiliary contact is 06 auxiliary +02 auxiliary

Description:

1 Basic configuration of control and protection switch: Main body + intelligent release device + auxiliary contact group; main body is composed of basic circuit of main circuit, namely contact system module, short circuit release, electromagnetic system module and operating system module.

2 rated operation short-circuit breaking capacity is divided into: economic type (C) common models: 35kA or less; standard type (Y): 50KA; higher type (H): 80KA

3 function code

Note: Single NMCPS function description (1 basic type: overload is alarm, and trip; 2F fire type: overload only alarm, no trip; 3G isolation type: handle is in isolation position, with locking device; 4L leakage type: leakage alarm) .

Selection parameter list

Shape and installation size

Auxiliary point number table

Typical wiring diagram