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CPS code description
CPS, also known as Control and Protective Switching Devices, is a new type of product in low-voltage electrical appliances. As a new category of products, its product category code is "CPS" (Control and Protective Switching Devices). CPS meets the following standards: GB14048.9 "Low voltage switchgear and control equipment - Multi functional electrical appliances (equipment) - Part 2: Control and protection switchgear (equipment)", IEC60947-6-2 "Low voltage switchgear and control equipment - Part 6- Multi functional electrical appliances - Section 2: Control and protection switchgear". The electrical design representation method that complies with GB and IEC standards is shown in Figure 1.
　　HLK1It is the first generation CPS product that fills the domestic gap
◆ Purpose
HLK1 is mainly used in power systems with AC 50Hz (60Hz), rated voltage up to 690V, and rated current from 0.25A to 125A. It can connect, carry, and disconnect currents under normal conditions, including specified operating overload conditions, and can connect, carry, and disconnect currents under specified abnormal conditions, such as short-circuit currents.
◆ Function
　　 HLK1Adopting a modular single product structure, it integrates the main functions of traditional circuit breakers (fuses), contactors, overload (or overcurrent, phase failure) relays, starters, isolators, etc. It has remote automatic control and local direct manual control functions, panel indication and electromechanical signal alarm functions, and coordinated time current protection characteristics (inverse time limit, definite time limit, and instantaneous three-stage protection characteristics), as shown in Figure 4. By selecting functional modules or accessories as needed, control and protection can be achieved for general (infrequent starting) motor loads, frequent starting motor loads, and distribution circuit loads.

◆ Product advantages
Compared to systems composed of separate electrical appliances
a. Having the characteristic of self coordination between control and protection
HLK1The series of control and protection switchgear integrates control and protection functions, equivalent to a circuit breaker (fuse)+contactor+overload relay+auxiliary appliance. It effectively solves the problem of matching protection and control characteristics between components that cannot or are difficult to solve with separate components, making the coordination of protection and control characteristics more perfect and reasonable (with inverse time limit, definite time limit, and instantaneous three-stage protection characteristics). As long as a single product is selected based on the load power or current, it can replace various electrical appliances from the power supply input end to the load end in the past, without the need for capacity reduction; Greatly reducing the workload of designers.
b. Unparalleled operational reliability and continuous system performanceHLK1After breaking the short-circuit current, it can be put into use without maintenance, which means it has the continuous operation performance after breaking the short-circuit fault:HLK1After conducting the short-circuit current test, it still has an AC-44 electrical life of not less than 1500 times, which is difficult to achieve with a system composed of separate components such as circuit breakers,HLK1This feature greatly improves the operational reliability and continuous operation of the system, with an Ics of 80kA, which is internationally leading and the highest domestic indicator among similar products.
c. Energy saving and material saving
HLK1It has the advantages of small size, small installation area, no separated component contacts, reduced circuit heating, energy conservation, and material conservation.
Compared to molded case circuit breakers
a. Has the characteristics of high breaking ability and short arcing distance
HLK1At the rated operation of 380V, the short-circuit breaking capacity Ics (o-co co) reaches 80kA for high breaking type, 50kA for standard type, and 35kA for economy type. The breaking time under the expected short-circuit current of 50kA is only 2-3ms, and the current limiting coefficient is below 0.2, reaching the leading level of plastic shell circuit breakers and the current limiting level of fuses, greatly limiting the dynamic and thermal impact of short-circuit current on the system.HLK1The flying arc distance is only 20-30mm.
b. Compared with the protection system composed of molded case circuit breakers, it has the characteristic that the protection setting current can be adjusted
HLK1The thermal trip (inverse time limit) current and magnetic trip (definite time limit) current can both be adjusted on the panel, that is, in addition to the conventional thermal protection current that can be set according to the load power, the overcurrent protection setting current can also be adjusted on the panel (the adjustment range for distribution loads is 3-6Ie, and the adjustment range for motor loads is 6-12Ie). Overcoming the disadvantage of users being unable to adjust the short-circuit protection setting current of molded case circuit breakers after leaving the factoryHLK1Even if the product is installed at the end of the line, it still has good short-circuit protection function when the short-circuit current is small.
Compared with the performance of contactors, it has the characteristics of long service life and easy operation
HLK1The mechanical lifespan of AC-43 is 5-10 million cycles, and the electrical lifespan of AC-43 is 1-1.2 million cycles. It can be manually operated locally or achieve remote automatic control function. The advanced contact and electromagnetic system separation design is adopted, effectively suppressing the secondary bounce of the contact and greatly improving the electrical life of the product. It is particularly suitable for harsh situations such as heavy-duty starting.
Other characteristics
a. Complete supporting accessories
Auxiliary contacts, signal alarm contacts, shunt release devices, remote re release devices, panel operating mechanisms for doors or drawers, control circuit conversion modules, etc. can form a complete control and protection unit on a single product, achieving coordinated control and protection functions.
b. Flexible installation
Horizontal installation, vertical installation, and horizontal installation do not affect the performance of use. Can be widely used in compact complete sets of equipment, including fixed or drawer type MCC cabinets, especiallyHLK1-12, 16, 18, 32, 45 are used in 1/4 and 1/2 drawers, with unparalleled advantages in separating components.
c. Safe and reliable, with a high level of protection
The wiring terminals in front of and behind the plug-in board both have anti touch function, and equipped with high protection level enclosures, they can be applied to damp places in civil buildings, basements, water pump rooms, coal mines, ports, ships, petrochemicals and other fields. They are ideal products to replace current electromagnetic starters, protective and combination starters.