SJKCPS Control and Protection Switchgear

Scope of application
SJKCPS, also known as "Control and Protective Switching Device", is a new type of product in low-voltage electrical appliances. As a new category of products, its product category code is "CPS", which stands for "Control and Protective Switching Device" in English. CPS complies with the following standards: IEC60947-6-2: (2002) "Low voltage switchgear and control equipment - Part 6- Multifunctional electrical appliances - Section 2: Control and protective switchgear" and GB14048.9-1998 "Low voltage switchgear and control equipment - Multifunctional electrical appliances: Control and protective switchgear" (equivalent to IEC60947-6-2)
Product Usage
SJKCPS is mainly used in power systems with AC 50HZ (60HZ), rated voltage up to 690V, and current ranging from 0.16A to 125A to connect, carry, and disconnect currents under normal conditions, including specified overload conditions, and to connect, carry, and disconnect currents under specified extraordinary conditions (such as short-circuit currents)
Product Features
SJKCPS products adopt a modular single product structure, integrating the main functions of traditional circuit breakers (fuses), contactors, overload (or overcurrent, phase failure) protection relays, starters, isolators, etc. They have remote automatic control and local direct manual control functions, panel indication and electromechanical signal alarm functions, overvoltage and undervoltage protection functions, phase failure and phase loss protection functions, and coordinated time current protection characteristics (with inverse time limit, timed limit, and instantaneous three-stage protection characteristics). By selecting functional modules or accessories as needed, control and protection of various types of motor loads and distribution loads can be achieved
Product type and electrical symbols

Using SJKCPS basic products as the main switch, the following series of products can be formed by combining with various mechanisms and accessories:
a、 Firefighting type control and protection switchgear SJKCPS (F)
b、 Isolation type control and protection switchgear SJKCPS (G)
C、 Leakage type control and protection switchgear SJKCPS (L)
d、 Dual speed motor controller SJKCPSD
e、 Three speed motor controller SJKCPS3
f、 Dual power automatic transfer switch SJKCPSS
g、 Reversible motor controller SJKCPSN
h、 Pressure reducing starter: 1. Star Triangle SJKCPSJ1SJKCPSJ2
2. Autocoupling: SJKCPSZ
3. Resistance: SJKCPSR

Note:
Under normal circumstances, when the rated current is below 45A, a 45A main body frame is selected for switches, a 125A main body frame is selected for switches between 45A and 125A, and a 100A main body frame can also be selected for switches below 45A
◇ Basic switch configuration=switch body+electronic overload release+short circuit alarm contact+overload alarm contact (F-type is fire alarm contact)+auxiliary contact (two normally open and one normally closed)
Please determine (design) or adjust (use) the set current le based on the actual load capacity (power)
Auxiliary contact 02 (2 normally open 1 normally closed+1 short circuit 1 fault). Auxiliary contact 06 (3 normally open 3 normally closed+1 short circuit 1 fault). 09 (5 normally open 4 normally closed+1 short circuit 1 fault)

Normal working conditions
The ambient air temperature should not be lower than -5 ℃, not higher than+40 ℃, and the daily average temperature should not exceed+35C ◇ Altitude: The installation location should not exceed an altitude of 2000 meters.
◇ Atmospheric conditions: When the ambient temperature is+40 ° C, the relative humidity of the atmosphere does not exceed 50%; There may be higher humidity at lower ambient temperatures. When the monthly average minimum temperature is 25C, the average maximum relative humidity for that month is 90%. Measures must be taken to prevent condensation on the product due to temperature changes
◇ Pollution level; Level 3 installation category: I1, III
◇ Shell protection registration: IP20





Job Characteristics
SJKCPS adopts LED display with voltmeter and ammeter functions for various operating and fault states; Equipped with various function keys, various parameters can be set, and the set parameters can still be saved after power failure, with fault memory function
SJKCPS has RS485 communication interface and supports multiple fieldbus
SJKCPS is particularly suitable for motor control and protection. Within the set starting time, it only protects against phase failure, overvoltage, undervoltage, short circuit, leakage, and three-phase imbalance, which can avoid the impact of high starting current of the motor. The locked rotor protection can effectively prevent the motor from accidentally burning out, while the undercurrent protection protects the motor that does not allow no-load operation. SJKCPS can be equipped with accessories for external alarm and remote control. It can also form various electrical forms such as Y/△ starter, dual speed motor control, and dual power automatic transfer switch