Windings of the uninterruptible power supply transformer back ups 525. Programs included with the device
What does it take to ensure that your computer is protected from all sides? Antiviruses, firewalls, other software for protection against viruses. But all this will not help much in case of power surges or sudden power outages. And such things have a very detrimental effect on computer components. However, there is a way out of this situation.
In order for the named device to remain safe and sound, sources were invented. They are capable of not only equalizing the voltage during voltage surges, but also ensuring that the computer operates during a complete power outage for exactly the time necessary to turn it off correctly.
A little about the manufacturer
The ARS company has long been known in the domestic market. It was formed in 1981 and successfully manufactured devices to protect PCs from voltage surges. In 2007, the manufacturer was purchased by Schneider Electric. This marked a new milestone in the development of the company, and it also continued to rapidly release sources uninterruptible power supply.
The named manufacturer is well known in the domestic market due to its quality products and affordable prices. APC produces devices of various classes to protect PCs of different categories: from weak office computers to powerful server machines. The APC Back-UPS ES 525 UPS is specifically designed for low-power office machines and weak home computers.
During its existence, the APC company has released many remarkable devices. Every second computer in Russia and other CIS countries is equipped with an uninterruptible power supply from APC. This alone says a lot. Budget devices are especially popular among our compatriots, and the APC Back-UPS ES 525, the characteristics of which we will analyze a little later, is one of them. In the meantime, let's move on to the packaging, appearance and design of the device.
Contents of delivery
The APC Back-UPS ES 525 appears in front of the user in a huge cardboard box with color printing. The packaging shows the UPS, its specifications and the necessary information.
Inside is the device itself, a set of necessary wires, a closed-type battery, operating instructions in different languages (including Russian) and a warranty card. This package is standard for a budget device. There is nothing unusual about this.
But there is, nevertheless, one peculiarity. Devices of this level are usually delivered in completely casual cardboard boxes. And here is a whole artistic masterpiece. This alone speaks of the high status of the manufacturer, which cares about its reputation and tries to do everything to the highest standard, even though the APC Back-UPS ES 525 belongs to devices in the low price segment. This attitude very clearly outlines the general policy of the company. And it cannot but satisfy users.
Design
Externally, APC Back-UPS ES 525 is very similar to ordinary network filters, which are used to connect a computer and various peripherals. Only the uninterruptible power supply is much larger in size. On top panel There is a power button, LED indicators and connectors for connecting power plugs. At the bottom there is a compartment for installing the battery. In general, the design of this device is quite standard. Only the shape is unusual. And so - nothing extraordinary.
Much more important is that the APC Back-UPS ES 525 is made of thick and high-quality plastic. This protects the inside of the device from various mechanical damage. However, the developers did not forget about the cooling system.
There are enough ventilation grilles in this uninterruptible power supply. This is due to the fact that it bears a huge load, as a result of which a fair amount of heat is released, which must be removed somehow, otherwise the device will overheat and burn out.
Specifications
Well, we’ve reached the most interesting part of the material about the uninterruptible power supply from APC. Numbers, of course, can say a lot, but they can’t compare with real reviews. However, this is not about that now.
So, the declared power of the uninterruptible power supply is 300 Watts. Is this a lot or a little? Let's just say this is enough for an office computer. But nothing more. Battery life at full load is 4 minutes. At half load - 15 minutes. Not enough, of course, but it will be enough time to properly turn off the computer.
What are the other specifications APC Back-UPS ES 525? The battery, for example, is fully charged in five hours (despite the fact that it discharges in a matter of minutes), it has all types of protection. There are even phone protection Line, which is necessary for those using the appropriate connection.
This UPS weighs almost eight kilograms including the battery. This is an excellent result. Most of his “colleagues” are much heavier.
Programs included with the device
Like any company that respects its customers, APC included a software disc in the box with the uninterruptible power supply. This step allows you to programmatically control the operation of the APC Back-UPS ES 525.
The program allows you to adjust many device settings. For example, you can determine which computer component to give priority to during a sudden power outage, and which PC can do just fine without. This allows you to slightly increase the operating time of the device from an uninterruptible power supply. Naturally, we're talking about about battery operation.
In addition, the software has a very informative monitor that displays the current status of the uninterruptible power supply (temperature, voltage, etc.).
Known Issues
An uninterruptible power supply is also a technique. And any technology, as we know, tends to break down at the most inopportune moment. It’s good that in this case the problems are of the same type and can be easily diagnosed. For example, UPSs assembled in India have a weak point - the battery. It often breaks down (leaks).
There is also a known problem that the APC Back-UPS ES 525 does not beep when switching to autonomous power supply. Although, this cannot be called a serious problem. You can turn on the sound signal on the device using a set of programs that come with the device.
Another problem is fragility battery. It can last three years. This is where its resource ends. It's unfortunate, of course, but replacing it is not difficult.
Hi all. Today I got my hands on this UPS, the APC Back-UPS ES 525VA. There’s nothing special about it, but we’ll take a look at the filling. Let's start with the technical specifications.
Specifications
Type: reserve
Output power: 525 VA / 300 W
Operating time at full load: 4.3 min
Running time at half load: 15.6 min
Output waveform: step sine wave approximation
Max. absorbed pulse energy: 180 J
Number of power output connectors: 4 (of which 3 are battery powered)
Type of power output connectors: CEE 7 (Euro socket)
Enter exit
Input: 1-phase voltage
Output: 1-phase voltage
Input voltage: 160 - 280 V
Input frequency: 47 - 53 Hz
Information display: LED indicators
Sound alarm: yes
Battery
Charging time: 5 hour
Possibility of replacing batteries: yes
Protection
Overload protection: yes
Protection against high-voltage impulses: yes
Interference filtering: yes
Short circuit protection: yes
Protection telephone line: There is
Additional Information
Black color
Dimensions (WxHxD): 285x121x197 mm
Weight: 7.32 kg
The UPS case is made of plastic, which does not smell at all. Very nice, unlike many IPPON cases. There are four sockets on the top: a group of three sockets are battery powered, and one is simply protected. At one of the ends there is a hole through which the power wire comes out, next to which a universal reusable automatic fuse is installed. At the opposite end there is a data port and two ports for protecting the telephone line. There should be a cover on the bottom that covers the battery pack, but it got lost somewhere.
Opening. Unscrew the five screws on the bottom panel, one of which is located under the battery. In general, you will have to pull it out, one way or another. This UPS is built using a massive “W-shaped” transformer, which, like the battery, contributes to the weight and dimensions of this power source. Each group of transformer wires has a ferrite ring, of which there are two in total. This happens very rarely, and I would say quite rarely. All wires going to the board have a fairly large cross-section, and there are no complaints. The wires are already connected to the board using a detachable connection, which may make repairs easier in the future. For example, many Ippon UPSs have wires simply soldered into the board, which often complicates repairs.
Now let's move on to the board. It is made of blue PCB, using double-sided mounting. It is assembled mainly using SMD components, which increases the installation density, but in addition to SMD parts, there are also ordinary classical components. Distinctive feature The board is that there are no jumpers. Thanks to the use of a multilayer board and vias, it became possible to eliminate the need for classic jumpers. On back side SMD boards There are no components, only tracks.
All switching on the board and operation of the AVR system is carried out by four relays, three of which are represented by Song Chuan and one Omron relay, models and, respectively. The maximum switching current is 12 A, which in turn provides the necessary margin and reliability in case of accidental overload of the UPS.
The inverter is made of four 725P transistors, which are located two per radiator. Radiators, in turn, of course, leave much to be desired in terms of their size. The inverter also contains two 1000 uF 50 V capacitors from LELON ELECTRONICS CORP. I can’t say anything about these capacitors, I come across them, they seem to work, I’ve never had to change them.
A little theory.
Despite the absence of a diagram on the 640-0395B-Z_REV02 chassis on the Internet, a description of individual circuits can be found, and most solutions implemented in one UPS can be found with minor changes in another. Here is a description of an unknown UPS charger from the website mirpu.ru, the information is taken one by one.
UPS traditionally uses the LM2575-ADJ chip, which, unlike other chips in the family, is designed to generate not a fixed output voltage, but an adjustable one. The value of the output voltage is set by an external divider, which sets the corresponding voltage at the FEEDBACK input. In the circuit in Fig. 1, such a divider that generates a signal feedback, are R66/R67. The values of these two resistors determine the output voltage of the charger, i.e. the amount of voltage applied to the battery. Changing the value of these resistors will lead to a change in the pulse width at the output of the LM2575
Rice. 3
The energy source for this charger is a power transformer T, one of the windings of which is connected to the 220V power supply. Connect to the other winding of this transformer Charger via connectors J4 and J5. There is a reduced AC voltage present on these connectors, which appears immediately as soon as the UPS is connected to the power supply. This AC voltage is rectified by a full-wave half-bridge rectifier consisting of diodes D21-D24. Next, the rectified voltage is smoothed by capacitor C42, resulting in a constant voltage of approximately +18V. In the primary rectifier circuit we find two more transistors Q12 and Q13. But these transistors have nothing to do with the charger. The fact is that the transformer winding, connected using J4 and J5, is also a fixing winding (Clamp), i.e. the winding is dual-functional (step-down winding - when operating from the mains, and a fixing winding - when operating from batteries). Transistors Q12 and Q13 begin to switch only at that moment in time when the UPS switches to operating from the battery and begins to generate an output pulse-rectangular voltage, a “pause at zero” in which is created precisely with the help of the Clamp winding and transistors Q12/Q13.
So, the resulting constant voltage of +18V is applied to the input of the LM2575 microcircuit (pin 1 – IN). But this voltage is supplied through a current sensor, which monitors the amount of current consumed by the charger circuit. Thus, this charger ensures that the battery charging current is limited.
The direct current sensor is a low-resistance resistor R65. All the current consumed by the LM2575 chip (i.e., the current consumed by the battery) flows through this resistor. The voltage drop across this resistor is monitored by transistor Q11. An increase in current leads to an increase in the voltage drop across resistor R65 and to the opening of transistor Q11. When opening, transistor Q11 supplies additional bias to the feedback input FEEDBACK (pin 4), which leads to a decrease in the pulse width at the output of the OUT chip (pin 2), i.e. leads to a decrease in the charging voltage.
The charger is turned on and off by the CHARGE signal applied to pin 5. This signal is generated by the UPS microprocessor and is a discrete signal. Setting the signal low causes the charger to start and begin charging the batteries. When switching to battery operation, the microprocessor sets the CHARGE signal to a high level and the charger turns off.
The pulses generated at the output of LM2575 (pin 2) are smoothed by inductor L1 and capacitor C41, resulting in a constant voltage of 13.6-13.8 V. This voltage is designated XFMRLVCT and 12UNFILT in the diagram. Capacitor C44 provides additional voltage smoothing. This voltage is applied to the battery through fuse F2. Parallel-connected diodes D19/D20 are rectifier diodes that maintain current in the load at those times when there is no voltage at the output of the LM2575 (pulse dead time). The load current at this point in time is created due to the energy of the self-EMF of the inductor L1.
This charger does not allow you to adjust charging voltage battery, but provides charging current limitation.
A little theory.
Despite the absence of a diagram on the 640-0395B-Z_REV02 chassis on the Internet, a description of individual circuits can be found, and most solutions implemented in one UPS can be found with minor changes in another. Here is a description of an unknown UPS charger from the website mirpu.ru, the information is taken one by one.
UPS traditionally uses the LM2575-ADJ chip, which, unlike other chips in the family, is designed to generate not a fixed output voltage, but an adjustable one. The value of the output voltage is set by an external divider, which sets the corresponding voltage at the FEEDBACK input. In the circuit in Fig. 1, such a divider that forms the feedback signal is R66/R67. The values of these two resistors determine the output voltage of the charger, i.e. the amount of voltage applied to the battery. Changing the value of these resistors will lead to a change in the pulse width at the output of the LM2575
Rice. 3
The energy source for this charger is a power transformer T, one of the windings of which is connected to the 220V power supply. The charger is connected to the other winding of this transformer via connectors J4 and J5. There is a reduced AC voltage present on these connectors, which appears immediately as soon as the UPS is connected to the power supply. This AC voltage is rectified by a full-wave half-bridge rectifier consisting of diodes D21-D24. Next, the rectified voltage is smoothed by capacitor C42, resulting in a constant voltage of approximately +18V. In the primary rectifier circuit we find two more transistors Q12 and Q13. But these transistors have nothing to do with the charger. The fact is that the transformer winding, connected using J4 and J5, is also a fixing winding (Clamp), i.e. the winding is dual-functional (step-down winding - when operating from the mains, and a fixing winding - when operating from batteries). Transistors Q12 and Q13 begin to switch only at that moment in time when the UPS switches to operating from the battery and begins to generate an output pulse-rectangular voltage, a “pause at zero” in which is created precisely with the help of the Clamp winding and transistors Q12/Q13.
So, the resulting constant voltage of +18V is applied to the input of the LM2575 microcircuit (pin 1 – IN). But this voltage is supplied through a current sensor, which monitors the amount of current consumed by the charger circuit. Thus, this charger ensures that the battery charging current is limited.
The direct current sensor is a low-resistance resistor R65. All the current consumed by the LM2575 chip (i.e., the current consumed by the battery) flows through this resistor. The voltage drop across this resistor is monitored by transistor Q11. An increase in current leads to an increase in the voltage drop across resistor R65 and to the opening of transistor Q11. When opening, transistor Q11 supplies additional bias to the feedback input FEEDBACK (pin 4), which leads to a decrease in the pulse width at the output of the OUT chip (pin 2), i.e. leads to a decrease in the charging voltage.
The charger is turned on and off by the CHARGE signal applied to pin 5. This signal is generated by the UPS microprocessor and is a discrete signal. Setting the signal low causes the charger to start and begin charging the batteries. When switching to battery operation, the microprocessor sets the CHARGE signal to a high level and the charger turns off.
The pulses generated at the output of LM2575 (pin 2) are smoothed by inductor L1 and capacitor C41, resulting in a constant voltage of 13.6-13.8 V. This voltage is designated XFMRLVCT and 12UNFILT in the diagram. Capacitor C44 provides additional voltage smoothing. This voltage is applied to the battery through fuse F2. Parallel-connected diodes D19/D20 are rectifier diodes that maintain current in the load at those times when there is no voltage at the output of the LM2575 (pulse dead time). The load current at this point in time is created due to the energy of the self-EMF of the inductor L1.
This charger does not allow you to regulate the charging voltage of the battery, but it does limit the charging current.
Alexander 05/04/2014 21:22
the same symptoms. waited about 10 minutes. He beeped and fell silent. The diode lit up green as usual. While he was beeping, I booted up the computer and found this article. as soon as I read about everyone possible reasons, he turned on. seems scared). try and you will succeed. first try doing nothing.
Mikhail 05/25/2015 09:37
Back-UPS ES 550 beeped continuously. I replaced two electrolytic capacitors C14 and C30 (both 22 uF/16V). And everything worked! The capacitors looked normal, but upon inspection they turned out to be broken. They are located next to the tweeter on the board.
Andrey Ko 05/28/2015 13:03
Unfortunately, I do not have information about UPS SVEN. Read the instructions carefully, there will probably be an answer to your question. Perhaps this is how it should be. Maybe the red indicator is on while the UPS battery is charging? Who knows.
Sergey 06/07/2015 15:38
I have the same oops APC Back-UPS ES 525, but I can’t figure out why or not. Everything works fine after pressing the off button. The green LED goes out, after a second the switch is activated, and the voltage in the 3 sockets appears again. The battery is new, when installed it had about 70% charge. The next day it became even less. I checked the charging voltage: 0. I took it to a friend for repair, and he replaced the diode. Now charging is normal, but I can’t understand why the voltage remains in the sockets. In Windows 8.1 the input voltage shows either normal or 9 digits in volts.
Firmware version 851.t3.l
Andrey Ko 06/07/2015 16:34
An interesting case, I haven’t seen this on my own yet...
Perhaps the problem is in some relay or in the board itself, who knows. After turning off the UPS (using the button), there should be voltage in only one socket, and there should be no voltage in the other three. Sergey, contact the service center, specialists will correctly diagnose this problem and fix it.
Sergey 07/12/2015 10:02
I have one more question! I want to know how the oops behaves if you disconnect the battery, then plug the plug into the outlet and press the on button.
will oops turn on or not? Please try to do this for yourself! I'll wait for an answer.
Andrey Ko 08/04/2015 18:29
Hello, Oleg!
If the voltage of a fully charged battery is less than 12 volts, the UPS 525 may begin to behave as described in this article. This is not normal when the battery voltage is less than 12V. Obviously, it's time to change the battery. How many years has this battery lasted?
Sergey Prigorodov 20.08.2015 21:38
Finally, I found the reason why my oops started working normally. I wrote about this 2 months ago. That my oopsie still has voltage in 3 sockets after turning it off. So it turned out that in Windows 8 and 8.1 the program did not work correctly, after updating to 10, everything began to work normally!
Lev Alexandrovich 19.05.2016 16:46
APC Back-UPS ES 525. Cold start (in the absence of mains voltage) does not work. After pressing and holding the power button, the APC beeps several times. sound signals and turns off. The LED indicator does not turn on. There is no voltage at the sockets.
Tell me, what could be the reason?
Victoria 07/07/2016 00:04
Hello! Tell me, please, I bought a UPS not so long ago (about 3 weeks ago), there were no complaints as such, I had already experienced 2 strong surges, I switched to a battery without problems. When turned on, the green light immediately came on. A monitor is connected to the UPS, system unit, he goes online. A pilot with peripherals also goes into the network.
However, today, when I turned on the UPS, the red and green lights came on at the same time, and I heard the sound of a relay. I tried turning the UPS on and off several times on the panel, and each time it was the same: the red and green lights turned on with a corresponding single squeaking sound. I have never seen any more non-standard squeaks or blinking noises while the computer was running. This only happens when turned on.
The UPS is always connected to the network, I turn it off after the computer is running only on the panel button. Could this indicate a malfunction? Thanks in advance for your answer.
Sincerely, Victoria.
Andrey Ko 07.07.2016 14:01
If we are talking about the APC back UPS ES BE525, these symptoms may indicate a weak battery charge or poor contact at the terminals. If the described symptoms recur, I advise you to return the UPS to the store under warranty.
Victoria 07/07/2016 14:43
Thank you. Yes, this happened again several times today. I decided to conduct an experiment and pulled out the socket going into the network from it. He was holding the computer, but the light was red, not yellow. She also beeped every 7-10 seconds...
Andrey Ko 07/07/2016 18:29
A red light may also indicate that a high-power device (electric heater, iron, etc.) is connected to the UPS outlet. If such devices are not connected to the UPS sockets, it is obvious that this unit is defective. Until it's over guarantee period, take it to the store for a replacement.
Alexander Sh 10/28/2016 09:42
What does this mean: “A pilot with peripherals also goes to the network.” A pilot with peripherals is connected to the UPS. And this peripheral is not a laser printer by any chance. If this is the case, then I advise you not to connect the laser printer to the UPS, because laser printer high energy consumption for heating the furnace (fuser).
Andrey Ko 07/12/2016 21:26
I have not yet encountered such an indication on this device. There can be many reasons: from banal battery wear to failure motherboard or some electronic components, for example, capacitors, relays, etc.
Andrey 08/03/2016 19:30
A similar story happened to me today:
The UPS 525 sat without a battery for quite a long time and was not used.
I bought it the day before yesterday new battery(Delta), inserted, turned on - everything worked as it should.
This morning there was a squeaking sound - every second there was a double beep, the indicator was flashing orange and red. When turned on during the test, it flashes and beeps as well, then green lights up for a second simultaneously with the relay turning on, and then orange and red again with a double “beep”.
When I get home, I'll check...
Andrey 08/04/2016 08:41
During the day, while the UPS was turned off, the strange blinking disappeared - it turned on normally, and after the normal test the green light was on.
But the voltage confuses me - with the battery removed it is 10.9V, with the UPS turned on and with the battery connected it is 10.7V, after a minute it is 10.5V and decreases right before my eyes.
It looks like there's something wrong with the device itself? There is no charging, but it seems the other way around - the battery is being discharged, although no consumers are connected to the UPS.
