Switching network Repeaters to go in and out

 AC fan cooling motor fan cover 
Specifications
1. Customised
2. good quality
3. Surface treatment: Galvanize
4. Type: Motor Cover
In and out of Repeaters is the interface circuit between the trunk and switching network, is used to switch trunk connections. Its features and circuit and switching system used in the system and trunk signal way has a close relationship between innings. To simulate relay interface unit (ATU), its role is to realize the simulation of the trunk and exchange network interface, basic functions in general are: sending and receiving said trunk status (such as idle, occupy, reply, release, etc.) of the line signal. Forward to receive on behalf of the called number of register signal. Supply the power supply and signal. Provide the received signal to control equipment. For the simplest case, a switch relay through solid line trunk with another switch connection, and USES the subscriber loop signal, then the simulation of the repeater function and equivalent to a "phone". If other more complex signal method, the repeater should implement the corresponding voice, signal transmission and control function. 


Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor

Specifications
Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
Digital trunk interface unit (DTU) role is to realize the digital trunk and the interface between the digital switching network, it was related by PCM timeslot transmission trunk signaling, complete is similar to the basic function of the simulation should bear repeater. But as a result of the digital trunk transmission way of PCM digital signal, therefore it has some special issues of digital communication, such as frame synchronization, the clock recovery, type exchange, signaling insertion and extraction and so on, which to solve the signal transmission, synchronization and signaling with three aspects of the connection 3 phase induction motor problem. The basic function of digital acmotor2.blogspot.com ac motor relay interface unit including the frame and the complex frame synchronization code generation, frame, even zero suppression, type transformation, alarm processing, clock recovery, frame synchronization search and inter-office signaling insertion and extraction etc., like permanent magnet motor BORSCHT simulated user circuit, also the above eight kinds of function of digital relay unit can be summarized as GAZPACHO.