The power used in medical CT machine, X-ray apparatus are relatively large, once the power off require a longer backup time. General Electric preparation industry standard is 2 hours long, but SOROTEC suggested that, for better operational experience and prevent the city power outage time is too long, the backup time of CT machine is preferably over 4 hours. As for the model, because the hospital uses a variety of medical equipment, and the general power is relatively large, which led to fluctuations in the frequency, the electricity environment is bad. Therefore, for medical equipment needs to develop a special UPS power supply, requiring its stability, high power, high efficiency, small space occupation and so on. The default of medical UPS is no batteries, customers can choose their own battery, you can also request the uninterruptible power supply company to configure. 120KVA medical grade UPS power supply can be applied to large power CT machine, which backup time ≥4 hours, is suitable for large hospital.
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
In the all centralized mode, the computer system is composed of computer and network and other electronic equipment. These electronic equipments have strict technical standards and requirements for the power system. UPS power supply system, usually refers to the UPS host, storage battery, static bypass switch and other auxiliary equipment, in order to realize the network data center run 365 days, 24 hours continuously, can not achieve by only relying on the UPS which is high working efficiency and output ability, the input and output power distribution cabinets, circuit breakers, switches and transmission cables in the data center UPS system are choke points of failure, if there is a problem, it will inevitably lead to system outages.Therefore, to achieve near zero fault power supply, it must be a redundant power supply system with high fault tolerance. They are generally composed of 2/multiple way city power supply redundancy power system + standby generator + 1/multiple automatic transfer switch + anti lightning transient surge suppressor and IDC UPS power supply system. This is basically a distribution system which will never be a power failure, the maintenance and repair operation of “no power interruption” is allowed, can increase its availability to 99.999%, network room down time less than 5.26 minutes per year.
The advantage of decentralized bypass is that bypass redundancy is claimed, the centralized bypass is considered to be a single fault point.
(1)From the point of view of type selection From the point of view of device selection, the modular UPS system reliability of single high power SCR is much higher than small devices consisting of a centralized bypass, which function module is simple, only need to consider the influence of the device and a few peripheral driving circuit, while the decentralized bypass is distributed in the power module, but also affected by many internal device module. Engineers who have experience in maintenance all know that, faults of rectifier and inverter circuit are likely to be caused by other parts of the circuit because of sparks and spatter, that is to say the static bypass facing more uncertainty risk. If the bypass is a single fault, the bypass may be referred to as a multiple point fault.
(2)From the point of view of system capacity From the point of view of system capacity, the capacity of centralized bypass is designed according to the cabinet, irrespective of the number of modules configured. The static bypass capacity of the decentralized bypass is determined by the module capacity, that is, when the module fails, the system will lose the corresponding static bypass capacity. The same condition is not a problem for centralized bypass. Because of the advantages of the capacity and even the ability of some manufacturers to provide 125% long-term overload, the centralized bypass module has absolute guarantee for system reliability.
(3)Reliability design analysis of centralized bypass The reliability design of centralized bypass, many manufacturers have put forward many solutions to enhance the reliability, such as redundancy control circuit scheme, redundant communication bus scheme, power module and control module bypass decoupling scheme, power module in the bypass control scheme, the solution of each of the manufacturers have their own characteristics, can greatly to enhance the usability of the system, plus the common hot swappable bypass module design, maintenance and upgrade is as simple as the power module.
SOROTEC MPS9335 30-150KVA Modular UPS
1.Superior energy saving and environment-friendly: Efficiency > 96% at 50%-75% rated load, and > 95% at 25% rated load; Input PF > 0.99,input THDi<3%. 2.Superior capability of powering load: Output PF is 0.9 or 1, no need of power deration with load of leading or lagging PF. 3.Easy-to-install: Top or bottom cabling, no need of input cabling cabinet. 4.Easy-to-maintain: Full front access, UPS, failed part can be replaced shortly. 5.Easy-to-modify: The number of battery 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 UPS. 6.6-inch extra large LCD that can display 12 language (Chinese ,English ,Russian, French ,Spanlish and so on). 7.Provide large LCD touch screen (optional). 8.Each UPS modules provide 4.5KW charge capacity. equivalent to 10 to 12A. 9.On-Line Double Conversion, fully isolating the influences of power grid pollution and power failure from utility power supply and diesel generator to load. 10.Advanced DSP full digital control technologies realize higher system stability, online capacity expansion and maintenance. 11.Advanced distributed active parallel technology realizes parallel operation of 4 UPS units and online capacity expansion without centralized bypass cabinet. 12.Digital load sharing technology features extra low cross current and extreme high system reliability in parallel operation. 13.Adaptive to severe power grid environment due to extra wide input voltage and frequency ranges. 14.Extra strong capability to withstand output overload and short circuit, ensuring the system stability and system safety at limit conditions. 15.Intelligent battery management maintains battery automatically to prolong the battery life. 16.Efficient heat dissipation and effective protection under severe environment due to its independent layer-sealed ventilation. channel and redundant fan design, as well as the paint-protected circuit boards and built-in dust filter. 17.Applicable voltage south America.
The full name of the MPPT solar charge controller is Maximum Power Point Tracking solar controller, is the upgrade products of traditional solar charging and discharging controller. The MPPT controller can detect the generation voltage of the solar panel in real time and track the maximum voltage current value (VI), so that the system can charge the battery with maximum power output. Applied to the solar power system, coordinate the work of solar panels, batteries, and loads, is the brain of solar systems.
The maximum power point tracking system is an electrical system that allows photovoltaic panels to output more power by adjusting the working state of the electrical modules. It can store the direct current generated by the solar panel effectively in the storage battery, which can effectively solve the life and industrial use of electricity in remote areas and tourist areas not covered by the conventional grid, and no environmental pollution.
What is the function of MPPT?
Because of the solar cells influenced by the intensity of the received light and environment and external factors, the output power is changed, the solar power inverter with MPPT is to make full use of solar cells, keep it at the maximum power point, which is the function of MPPT.
PV array is connected with a load through the DC/DC circuit, MPPT device to detect the change of the current and voltage of photovoltaic array, and according to the change of the DC/DC converter PWM drive signal duty cycle adjustment.
For linear circuits, when the load resistance is equal to the internal resistance of the power supply, the power supply has the maximum power output. Although photovoltaic cells and DC/DC conversion circuits are strongly nonlinear, they can be considered as linear circuits in very short periods of time. Therefore, as long as the equivalent resistance of the DC-DC conversion circuit is adjusted, so that it is always equal to the internal resistance of the photovoltaic cell, the maximum output of the photovoltaic cell can be achieved, so the MPPT of the photovoltaic cell is realized.
1. Intelligent maximum power point tracking technology increases efficiency 25%~30% 2. Compatible for PV systems in 12v, 24v or 48v 3. Three-stage charging optimizes battery performance 4. Maximum charging current up to 60a 5. Maximum efficiency up to 98% 6. Battery temperature sensor (BTS) automatically provides temperature compensation 7. Support wide range of lead-acid batteries including wet, AGM, and gel batteries 8. Multi-function LCD displays detailed information
The rated output power of the solar inverter determines the output power, and the average household is about 3000W. If use the inverter as a standby power supply, only need to calculate the power consuming, according to the rated output power of the inverter is chosen to match the model.
2.Maximum output current
The maximum output current of the solar inverter involves the type selection of the circuit breaker, which is related to safety. It is necessary to pay special attention to the value of the solar powered inverter when installing the inverter.
3.Voltage and frequency of power grid
Select inverters that need to be connected to the grid. These values are the grid parameters that can be used in conjunction with the solar inverter. The power grid of China is 220V, 50Hz. If you choose to buy other countries’ products, we must pay attention to these two parameters, or finally choose a transformer.
4.Maximum harmonic content
The output voltage and current waveform of solar inverter with distortion phenomenon, it is easy to affect the power consumption of its equipment performance if this value is too large, Chinese safety regulations require maximum harmonic content must be <5% rated power. In the selection process of solar inverter, the smaller the value, the better. But the current inverter technology is difficult to avoid this problem, so choose according to the domestic safety regulation value.
5.Power factor
The power factor cosφ represents the proportion of active power in the total power of the solar power inverter.
SOROTEC SSP3118C1 1-5KVA Off-grid Pure Sine Wave Solar Power Inverter for home use with parellel operation Max to 6 units, with Built-in PWM solar charge controller
Key Features
1. Pure sine wave power inverter for home use 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 PWM solar charge controller ( While SSP3118C2 with Built-in MPPT 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
