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Power operation management. Redundancy technology is adopted in the power infrastructure of large data center room, and the construction is not a step in place. A large number of power equipment will be purchased step by step with the need of work. For example, the bank data center room built in three years, just after the initial purchase of new new electrical equipment installation, transport engineering equipment installation engineering equipment installation, integration and uninterrupted service for machine installation process, this process is not allowed to stop operation, live operation poses a threat to the safety of the management personal, but also increases the probability of error, can also cause serious key equipment downtime. There is a need for charged strict rules to avoid accident, double circuit simultaneous operation should be avoided when the UPS output power distribution unit (PDU) live line is connected in the dual way power supply system, ensure the security of power supply.

Routine maintenance management. UPS output distribution distribution unit (PDU) is the direct power supplier of the load, and its maintenance management is especially important. ICBC data center room PDU in the UPS cabinet is over 60, In our work, we have a special person responsible for the opening and closing of switches in the PDU, and fill in the application form for each change; According to the load change, periodically test the data center UPS output power distribution unit (PDU) current of each phase. Every week, the temperature of the switch is measured by infrared thermometer in the switchboard, once abnormal temperature changes are found, then check processing is carried out.

SOROTEC MPS9335 10-1200KVA Without Switch Cabinet Modular Uninterruptible Power Supply

1. Superior energy saving: Efficiency > 96% at 50%-75% rated load, and > 95% at 25% rated load; Input PF > 0.99,input THDi<3%
2. Easy-to-install: Top or bottom cabling, no need of input cabling cabinet.
3. Easy-to-maintain: Full front access, UPS, failed part can be replaced shortly.
4. Easy-to-modify: The number of batter y cells can be configured flexibly, so the original batteries can be used when modifying the legacy system; moreover, the battery cell can be replaced in time when it fails without interrupting the normal operation of modular uninterruptible power supply.
5. Extra large LCD that can display 13 language (Chinese ,English ,Russian, French ,Spanish and so on).
6. Provide large LCD touch screen (optional).
7. Each modular uninterruptible power supply modules provide 4.5KW charge capacity. equivalent to 10 to 12A.
8. Advanced DSP full digital control technologies realize higher system stability, online capacity expansion and maintenance.
9. Advanced distributed active parallel technology realizes parallel operation of 4 UPS units and online capacity expansion without centralized bypass cabinet.
10. Adaptive to severe power grid environment due to extra wide input voltage and frequency ranges.
11. Intelligent batter y management maintains batter y automatically to prolong the batter y life.
12. The machine system for modular structure, consists of 1 to 10 module’s biggest single module to 30 kw.
13. Modular uninterruptible power supply power module supporting hot swappable, capacity upgrade extremely simple.
14. Super ability for overload and short circuit, ensure the system stability and safety under the limit state of system.

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The soft switching technology makes use of the resonance principle to change the current or voltage in the switching device according to the sine law. When the current is over zero, the device is turned off; When the voltage is zero, the device is turned on. Thus, the switching loss is reduced, and the problems of inductive shutdown and capacitive opening are greatly solved. When the voltage at the ends of the switch tube or the current flowing through the switch tube is zero, the switch is switched on or off so that there is no switching loss in the switch tube.

The soft switching resonant converter is composed of inductors and capacitors. The resonant circuit increases the number of devices. The system becomes complex and the reliability is reduced; Since the power factor of commercial solar inverter is 1, the soft switching technique is only suitable for the DC-DC transform in the first stage, and the post stage DC-AC converter also requires electrical multilevel technology.

According to the electrical level of the output voltage, the inverter can be divided into two electrical levels and electrical multilevel. The main advantages of the two electrical level converter are as follows: simple circuit structure, small in number of capacitors and small in occupation. However, due to the high voltage required by the two electrical level inverter device, the switching loss is large. In order to avoid the above technical problems, electrical multilevel technology has begun to appear and has attracted more and more attention. The so-called electrical multilevel refers to the output voltage waveform in the electrical level of equal to or greater than 3 of the converter, such as three electrical level, five electrical level, seven electrical level and so on. The electrical multilevel converter reduces the voltage of the two electrical level to the two ends of the switching device, and can reduce the switching loss of the switching device by the proper modulation mode, while maintaining the lower harmonic on the AC side.

SSP3118C4 2KVA ~ 5KVA Solar Inverter Wall Mounted Integrated with PWM/MPPT Controller

1.Pure sine wave inverter
2.Cold start function
3.Auto restart while AC is recovering
4.Overload and short circuit protection
5.Optional remote panel available
6.Selectable charging current based on applications
7.Configurable AC/Solar input priority via LCD setting
8.Compatible to mains voltage or generator power
9.Smart battery charger design for optimized battery performance
10.Parallel operation with up to 6 units only available for 4KVA/5KVA
11.Selectable input voltage range for home appliances and personal computers

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Solar inverter as a electronic equipment, its switching frequency is higher, the series connected inverter usually reaches about 20K, the current is relatively large, if you do not take measures, there will be a lot of electromagnetic interference. The usual 3 methods are shielding, filtering, and grounding. Shielding can effectively suppress the electromagnetic interference transmitted through space. The shield has two purposes, one is to limit the radiation of electromagnetic energy within the leakage control area, another is to prevent the external radiation of electromagnetic energy into the internal area, inverter adopts aluminum or steel conductor metal package. Filtering is the control of EMI conducted interference, usually using three devices to achieve: decoupling capacitors, EMI filters and magnetic components. The input and output of the inverter include X capacitor and Y capacitor, common mode inductors, magnetic beads, magnetic rings and other magnetic components. No matter what method is adopted to suppress the EMI interference, the electrostatic discharge is eventually carried out by grounding, so the grounding of the solar powered inverter is very important. In addition to suppressing EMI interference, grounding also provides zero potential reference points and security protection.

SOROTEC SSP3118C2 1KVA ~ 5KVA Off-grid Pure Sine Wave Solar Inverter Built-in MPPT Solar controller

1. Pure sine wave solar home 1KVA inverter
2. Cold start function
3. Remote panel available
4. Auto restart while AC is recovering
5. Overload and short circuit protection
6. Compatible to mains voltage or generator power
7. Selectable charging current based on applications
8. Configurable AC/Solar input priority via LCD setting
9. Built-in MPPT solar charge controller ( While SSP3118C1 with Built-in PWM solar charge controller)
10. Smart battery charger design for optimized battery performance
11. Parallel operation with up to 6 units only available for 4KVA/5KVA
12. Selectable input voltage range for home appliances and personal computers

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If the power supply system can not output the specified current, the voltage exceeds the allowable fluctuation range, the noise voltage is higher than the allowable value time and lasts more than 10s, the system is judged to be a system fault. When the voltage, frequency or waveform distortion in the original AC system is beyond the specified range, and the duration is longer than 60s, it will be judged to be a fault. Therefore, in order to ensure the reliability of the telecom outdoor DC power supply, the conditional telecom department should try to introduce 2 power input from two different places as far as possible, and set up the automatic switching device for the 2 way power input; the equipment should use high reliability switching equipment with high frequency, modular and hot plug type structure, so that it is easy to change, and configure backup equipment reasonably. No new technology or equipment shall be entered into the power supply system before being fully verified and tested. Should vigorously promote distributed power supply, more than two independent power supply systems shall be used for telecom equipment using the same DC voltage, this is the new requirements of future telecom network capacity and expedition. In order to minimize the average repair time of the equipment, it is necessary to analyze the operation parameters, predict the time of failure and remove it in time. We should also improve the level of technical maintenance, and adopt centralized maintenance, remote maintenance and telemetry maintenance.

The implementation of centralized monitoring management is the inevitable trend of network technology development. It is also the requirement of modern telecom network and effective measures for downsizing and increasing efficiency of enterprises. All kinds of power equipment should be intelligent, standardized and conform to the open telecom protocol.

SOROTEC SHW48200 48VDC MPPT Off-Grid Telecom Station Solar Hybrid System

■Adopt advanced MCU microprocessor control technology.
■Advanced MPPT Technology,High converting efficiency higher than 97% for minimizing energy loss.
■Reversed current protection at night, over voltage and reverse polarity protection.
■Capable of selecting different charging mode for various types of batteries.
■Protection degree:IP55
■Industy-leading power density compact size and high reliability;
■Doorframe designed with waterproof structure, posted on the seal and equipped with waterproof lock on the door double insulation design;
■Cabine adopt quality galvanized sheet or aluminum coated steel sheet as material, surface coating anti-UV power;
■Suitable for outdoor installation.

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In commercial application design, if the quality is guaranteed, it is easy to directly select the lowest price product after the comparation. At this time, the product with lowest price and common quality is often the winner, and the best quality products are unpopular. This is not bad for those soon to be abandoned or disposable electronic products, but how about designer choose such a power supply for medical system? The value of medical electronic products is high, and usually need to accomplish some key tasks. If the medical system fails, the consequences can be serious. The power supply for medical equipment must comply with safety, leakage, EMI-RFI radiation and protection requirements. These and related safety standards form a strict set of normative requirements. This kind of power supply must be in strict accordance with the insulation measures to prevent the patients and medical personnel from being electrocuted. EMC is also a key issue, including two aspects: how to reduce electromagnetic radiation and how to protect people from electromagnetic radiation. Therefore, for the design of medical power supply, the quality and reliability of the product must be the first choice.

Many designers do not have the correct understanding of the commercial UPS power supply and the medical UPS power supply, while many low-priced UPS suppliers may sell these commercial power supply as medical power supply. Buyers must be careful about this, because choosing such power products can have dire consequences. Therefore, designers need to understand the relevant regulations and regulations clearly.

SOROTEC HP9335C Plus 10-30KVA High Frequency Intelligent UPS

1.True double-conversion
2.DSP technology guarantees high performance
3.Output power factor 0.9
4.Wide input voltage range (110-300 VAC)
5.Active power factor correction in all phases
6.50Hz/60Hz frequency converter mode
7.ECO mode operation for energy saving
8.Accepts dual-mains inputs
9.Emergency power off function (EPO)
10.Generator compatible
11.SNMP+USB+RS-232 multiple communications
12.3-stage extendable charging design for optimized battery performance
13.Adjustable battery numbers
14.Maintenance bypass available
15.Optional N+X parallel redundancy
16.Optional isolation transformer offers full isolation and complete common mode noise rejection

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