SEO Blog

Any power supply in the use process has its set of rules and methods, scientific use can let UPS power supply life longer.
1.Maintain the industrial UPS power supply regularly. Clear the dust inside the machine, measure the voltage of the battery, replace the unqualified battery, check the fan running, detect and adjust the system parameters of UPS.
2.Prohibit overload use. UPS power supply maximum boot load is best controlled within 80%, if overload use, in the inverter state, often breakdown inverter triode. Practice has proved that for the vast majority of online interactive UPS, control its load in the 30% ~ 60% rated output power is the best way to work.
3.Prohibit frequent shutdown and open UPS power supply. General requirements in the closed UPS power supply, wait at least 6 seconds to open the power supply of UPS, otherwise, UPS power may “boot failure”, that is the state without city power output and the inverter output.
4.When using UPS power supply, be sure to comply with the relevant provisions of the manufacturer’s product specification, to ensure that the firewire, zero line, ground wire meet the requirements, users are not allowed to change their mutual order. For example, the United States a brand UPS AC power input wiring and Chinese AC input socket connection is exactly the opposite. For example, the three-phase UPS need to pay attention to the problem of phase order, otherwise there will be a phase error alarm, and so are other brands.
5.UPS power should avoid direct sunlight, and leave enough ventilation space, at the same time, prohibit the UPS output port with inductive load.
6.Strictly in accordance with the correct boot, shutdown sequence for avoiding sudden load or sudden reduction, UPS power supply voltage output fluctuations, so that UPS power supply can not work properly.

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