Zhejiang Shendun Electric Appliance Co

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Shield control and protection switch
Circuit board, Suzhou Philchuangneng double-layer good single-layer difference produced in Liushi
Internal copper material, red copper, good brass or even iron difference
/> Our silver point contains silver and is thick
plastic, divided into new materials and recycled materials
Mainly used in power systems from AC rated voltage to rated current, capable of connecting load-bearing and Breaks current under normal conditions, including specified operating overload conditions, and is capable of connecting and breaking current under specified abnormal conditions, such as short-circuit current.
Adopting a modular single product structure, it integrates the main functions of traditional circuit breakers, fuses, contactors, overload or overcurrent phase-opening relays, starters, isolators, etc., and has remote automatic control and local direct human control. Function, it has panel indication and electromechanical signal alarm functions, and has coordinated time current protection characteristics, inverse time limit and instantaneous three-stage protection characteristics. By selecting functional modules or accessories as needed, you can control and protect the distribution circuit loads of motor loads that generally start infrequently and that frequently start motor loads
Working characteristics
For various operating faults and other conditions The display has a voltmeter and ammeter function and is equipped with various function keys. Various parameters can be set. The set parameters can still be saved after power failure, and it has a fault memory function.
It has a communication interface to support a variety of fieldbuses.
Especially suitable for motor control and protection. Within the set starting time, it only protects against phase failure, overvoltage and undervoltage short circuit
Current leakage and three-phase unbalance, which can avoid the impact of large current when starting the motor. , while the locked-rotor protection can effectively prevent
the motor from accidentally burning out, and the under-current protection protects the motor that is not allowed to run without load, starting from over-current.
Accessories can be configured to realize external alarm and remote control, and can also constitute dual starters such as /△
Control of speed motors and dual power supplies
Main body
Mainly composed of the main body panel of the body The main circuit contact group of the base plate electromagnetic transmission mechanism operating mechanism includes a contact system
A short-circuit release and other components, with short-circuit protection functions similar to those of a fuse
Automatic control similar to the remote control of a contactor Function local operation and indication function.
Electromagnetic sensing mechanism
The electromagnetic transmission mechanism mainly consists of control coils, iron cores, control contacts and bases, etc. to form an electromagnetic control system similar to a contactor
It has an under-voltage protection function and can accept on-off Operation instructions control the main contacts in the main circuit contact group to connect or disconnect the main circuit. The coil terminals are marked.
Operating mechanism
It can accept the instantaneous short-circuit signal of each pole contact group and the fault signal from the electronic release, and cut off the control through the control contact
The control coil circuit is interrupted by the electromagnetic operating mechanism to break the main circuit , reset by operating knob after troubleshooting.
The main circuit contact group includes the contact system short-circuit release
The main circuit contact group is composed of a dynamic and static double-break point contact grid arc extinguishing chamber and a current-limiting fast short-circuit release action mechanism.< br/> Each pole is independently equipped with a current-limiting quick release in the main circuit contact group, which is combined with an arc-extinguishing system with high breaking capacity to achieve backup protection with high current-limiting characteristics and a current-limiting coefficient of less than 100%. The current setting value cannot be adjusted, it is only related to the rated current of the main body, and its setting value is the effective value. When a short circuit occurs in the load, the tripper makes a quick impact to open the main contact, and at the same time drives the operating mechanism to cut off the control coil circuit to disconnect all poles of the main circuit.
Intelligent controller
The digital controller has adjustable protection functions for overload and overcurrent, and has delayed phase failure, phase loss and undercurrent
Three-phase unbalanced overvoltage and undervoltage and low overload Good protection function, the set current value includes long inverse time limit for overload
The set current value of delayed tripping, short circuit short-delay set current value or fixed time limit set current value can be adjusted according to the principle and purpose
Divided into various categories and specifications.
Panel indication and function setting
The digital controller has adjustable overload and overcurrent protection functions, and has delayed phase failure, phase loss and undercurrent
Three-phase unbalanced overvoltage and undervoltage and relatively Good protection function under low overload, the set current value includes long inverse time limit for overload
The set current value of delayed tripping, short circuit short-delay set current value or fixed time limit set current value can be adjusted according to the original value
They are divided into various categories and specifications according to their management and usage.
Key function
Setting key Running status Short press the setting key to enter the parameter setting state. The user can set and change various parameters
according to the load needs.
Data key: Short press the data key in the setting state to modify the flashing word bits, and the level difference is cyclic
In the running state, short press the data key to query the last fault type.
Select the set character bit in the shift key setting state, and the selected character bit is in a flashing state, waiting to be changed.
After the reset key parameter setting is completed, press the reset key briefly to save the parameters and put it into normal monitoring operation.
Light indication
The power light is always on when there is power, and flashes when communicating with the handheld programmer
The current light is always on when overloaded, and flashes for seconds when the three-phase unbalance is broken and the phase is missing
The voltage lamp control circuit always lights up when there is overvoltage and flashes when undervoltage
It is mainly used in power systems with AC rated voltage to rated current. It can connect, load and break under normal conditions, including specified operating overload conditions. Current, and can connect, carry and break current under specified abnormal conditions, such as short-circuit current.
Adopting a modular single product structure, it integrates the main functions of traditional circuit breakers, fuses, contactors, overload or overcurrent phase-opening relays, starters, isolators, etc., and has remote automatic control and local direct human control. Function, it has panel indication and electromechanical signal alarm functions, and has coordinated time current protection characteristics, inverse time limit and instantaneous three-stage protection characteristics. By selecting functional modules or accessories as needed, you can control and protect the distribution circuit loads of motor loads that generally start infrequently and that frequently start motor loads
Aegis Control and Protection Switch
Aegis Control and protection switch
Aegis control and protection switch
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