Frame-Relay description

Frame-Relay description

Physical topology: switches, access links, trunks, CSU / DSU

Frame relay technology is a fast packet switching technology that uses simplified methods to transmit and exchange data units at the data link layer. Frame relay technology was born and developed under the conditions that packet switching technology is fully developed, digital and optical fiber transmission lines are gradually replacing existing analog lines, and user terminals are becoming more intelligent.
Frame relay only completes the functions of the physical layer of the OSI and the core layer of the link layer, leaving flow control and error correction to the intelligent terminal, which greatly simplifies the protocol between the node machines; at the same time, frame relay uses virtual circuit technology, Can make full use of network resources, so frame relay has the characteristics of high throughput, low delay, suitable for sudden business and so on. Frame relay is an important option for ATM networks. Frame relay is introduced into ISDN as a bearer service added to the packet mode. Its frame structure is consistent with the LAPD structure of ISDN and can be logically multiplexed.

Off-line 12V Battery Smart Pulse Restore System, also be called Battery Maintenance System or Battery Restore Solution: mainly used in the whole industry of Electric Vehicle Battery (EV as electric bike, motor and Car ), Car and Truck Start-up battery, Sightseeing car and Golf Cart power batteryWind and Solar energy storage batteryUPS Back up power systemTelecom base site battery , State Grid and Military battery for sudden affair, etc.

12V Battery Pulse Restore  off-line System fully take into account the inconsistent of the physical resonance frequency between lead sulfate crystal and battery plates, select the optimal frequency of pulse waveform and pulse current intensity to "break" and "decompose" the lead sulfate crystals, ensure the best restoration effect of sulfide battery without any damage to the plates. In order to Reduce Internal Resistance and Increase Battery Capacity and Voltage effectively.

The system is composed of 3 parts and a professional standard restore process: 1) 12V Battery Restorer Device(4.5~300Ah); 2) 12V Battery Digital Pusle Charger; 3) 12V Battery Discharge Tester.  Lead-Acid Battery Restoration system and Solution is applicable to all of Lead Acid Battery(AGM, GEL, VRLA, MF, Flooded, Dry, Traction, Deep cycle and Stationary), and widely used in 12V (4.5~300Ah) cell batteries. 

Product features
1.  The smart pulse with fast rising front is resonant with the crystal of lead sulfate to dissolve the large lead sulfate crystal under the action of charging pulse, which can improve the capacity and prolong the service life of the battery.
2.  No need to add any chemical additives, does not change the internal electrolyte composition of the battery, safe and reliable; For water loss batteries only need to add deionized water before restoring. The output pulse voltage and pulse current are strictly limited.
3.  4 independent output, can repair 4PCS 12V/4.5Ah-300Ah cells at the same time without interference.
4.  Each system is equipped with "capacity selection" gear, according to the different capacity of the battery to select the precise gear, can be ensure better protection of battery plate in repair working.
5.  Each system is provided with automatic repair function, automatic repair system will smartly adjust the pulse duty ratio based on the size and conditions of the battery without anyone on duty.
6.  Each system is equipped with "High resistance repair" function, select the high resistance repair, specially for the long term stored batteries, even if the OCV is 0 Volt, but also can be easily activated.

12V Battery Restore System

12V Battery Restore System,12V Battery Pulse Desulfating Restorer,Battery Repair System,12V Cell Maintenance Charger

Shenzhen Daceen Technology Co., Ltd. ,