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The telecom power inverter is a kind of device which can make a constant current in the circuit. The telecom inverter has positive and negative electrodes, the potential of the positive electrode is high, and the potential of the negative electrode is low; When the two electrodes and the circuit connected, telecom inverter can maintain a constant potential difference between two electrodes, thereby forming the anode to cathode by constant current in the external circuit.

The application range of telecom inverter: telecom station solar hybrid system for large power plant, hydroelectric power plant, EHV substation, unattended substation as control, signal, protection and automatic reclosing operation, emergency lighting, DC, closing all DC operating mechanism, the two loop instrument, AC DC power supply control automation the uninterruptible power supply device and electric device.

Telecom inverter working principle: telecom inverter consists of charging panel, power distribution panel, battery and DC voltage converter. The charging panel is composed of a plurality of charger power supply module and computer monitoring system, the single cabinet maximum configuration 160A, if you need a larger output current can achieve multi cabinet in parallel. Power distribution panel with microcomputer insulation online monitoring device, when a feeder branch grounding accident occurs can show a branch number and grounding resistance. Battery panel can be equipped with microcomputer battery inspection device, at any time to monitor the battery state. DC voltage transducer with high frequency DC transmitter, when the output voltage switching bus control line bus in 180-300V, the voltage changes can be firmly stabilized at 220V.

If UPS redundancy above two UPS modules, the availability of UPS up to 99.999%, MTBF (Mean Time Between Failure) up to more than 15 million hours.

Minimum downtime. If the number of faulty UPS modules is less than or equal to the number of redundant UPS modules, the UPS module can be replaced online without affecting the operation of other modules; If the number of faulty UPS modules is greater than the number of redundant UPS modules, due to the use of replacement UPS module maintenance, so downtime will not exceed 5 minutes.

On the problem of hybrid solar inverter efficiency, designers have always been committed to improving the efficiency of the solar inverter. But which areas to start, so as to improve the efficiency of the inverter?

For the inverter with transformer, the main DC filter main circuit (or DC filter circuit), IGBT (or other inverter module), reactor, transformer, AC filter (or homemade filter circuit and wire). So in order to improve the conversion efficiency of the inverter, we can start from these aspects. For example:

1.IGBT, we can reduce the IGBT loss, reduce the switching frequency of the IGBT, but also cannot be reduced without limit, because when reducing the switching frequency, the waveform of the pure sine wave solar inverter will be worsen, the power quality will be reduced, and will increase the noise of the machine, so can only be appropriate to reduce the switching frequency of IGBT.

2.The loss of the transformer. While the transformer losses only the copper loss and iron loss, when we reduce these two loss, inverter conversion efficiency will be improved.

3.The loss of reactor, the reactor to improve the Q value, which is to reduce the inductance of the inductor. So many ways to improve the conversion efficiency of the inverter, I believe that experts in this area will have a lot of more effective methods to improve the efficiency of the products.

Telecom inverter is a kind of device which alternate 220V power frequency current into the voltage regulator output DC voltage, need to go through transformer, rectifier, filter, voltage regulator four links to complete. Each link has its role, the following is a small series of its summary.

1.The rectifier filter circuit: rectifier circuit to AC voltage UI is converted into DC voltage ripple, ripple through the filter circuit to filter components and large DC voltage U1 rectifier and filter circuit, the output ripple is less commonly used full wave rectifier filter, bridge rectifier filter etc..
2.Power transformer: step-down transformer, 220V AC voltage converter with AC voltage to the power grid, and to the rectifier circuit, transformer secondary voltage of the transformer is determined by the secondary voltage.
3.Voltage regulator circuit: the function of the voltage regulator circuit is to make the output of the DC voltage stability, does not change with the AC power grid voltage and load changes. Commonly used integrated regulator has a fixed three terminal voltage regulator and adjustable three terminal voltage regulator.
4.Filter circuit: the rectifier circuit output voltage of the most of the AC components to be filtered, so as to get a smooth DC voltage, each filter capacitor C meets RL-C=3~5T/2 or T for input AC signal period, and RL is the equivalent load resistance of rectifier filter circuit.

SOROTEC SHW48200 48VDC Telecom Station Solar Hybrid System

UPS backup time is generally a problem concerned by customer in the purchase process. Usually most people prefer to choose the UPS which power backup the longer the better, in fact, this is not correct.

We must firstly clear that the seller will usually have standard type UPS and long-acting UPS. Standard type UPS with built-in battery, after a power interruption can supply power to the load equipment in general for a few minutes to tens of minutes, of course, the length of time depends on the load. Long acting UPS can not only meet the power requirement of load, but also meet the requirements of customers and work types and so on, so the long-term UPS is usually equipped with an external battery pack.

If the client is not particularly strict to the work condition of the load, and the power of the load is not particularly large, usually with standard type UPS would be enough. Because the choice of long backup time UPS is bound to increase the number of battery groups and thus increase costs, is undoubtedly a waste which requirement is not very high.

Generally, in the power environment is poor, more frequent power outages in the area power supplied by UPS and generator, while the battery power supply is mainly affected by the load size, battery capacity, environmental temperature, battery discharge cut-off voltage and other factors. So this time we recommend that users generally choose to better safeguard the long-term high type operation UPS. Reasonable UPS hardware configuration can not only reduce the costs, but also provide better power security.

SOROTEC HP9115CRT 1-10KVA Rack Mount UPS