我不知道为什么…也许我只是一个“幸运”的家伙…但似乎总是有一些设备能够在它们出问题时发出声音提醒我，似乎总是在半夜我熟睡时“响起来”。这件事发生在去年当时，楼下一个插在墙上交流电源插座上的一氧化碳探测器认为它太旧了，应该退役更换了。我是如此的昏昏沉沉，就像你在阅读我的悲惨故事时看到的那样，以至于我一开始以为声音的来源是连接在天花板上的烟雾探测器。我没有意识到我的错误，直到我解开它，仍然听到哔哔声响起。

I don't know why... Maybe I'm just a "lucky" guy... But there always seemed to be devices that sounded to alert me when they were going wrong, and that always seemed to "go off" in the middle of the night when I was asleep. It happened last year when a carbon monoxide detector downstairs plugged into a wall AC outlet decided it was too old and should be retired and replaced. I was so groggy, as you can see in reading my sad story, that I thought at first that the source of the sound was a smoke detector attached to the ceiling. I didn't realize my mistake until I untied it and still heard the beeping sound.

—当警报声伴随顶部闪光灯时，电池没电(或断开连接或不存在，无论其价值如何)

- When the alarm is accompanied by the top flash, the battery is dead (or disconnected or non-existent, whatever its value)

—过多的电流通过设备的一个(或多个)电池供电的交流输出，当声音不伴随着顶部闪光灯

- Excessive current passes through the device's one (or more) battery-powered AC output when sound is not accompanied by a top flash

又一次，那是半夜，我(后来证明是迷惑地)渴望回去睡觉。因此，我手动关闭了任何连接到UPS的设备，这些设备不会对突然断电做出良好的响应，然后关闭UPS本身。第二天，我又打开了UPS它好了几天，当它又半夜把我吵醒了。在那个时候，我决定这是这个单元的退休和拆卸时间，尽管之前有更多的实验(只是在醒着的时候，请注意…持续的噪音让我的妻子事实上恼火)。UPS会稳定地坐在那里嗡嗡作响…只要没有任何东西连接到任何一个电池供电的插座。但它所需要的只是像背光关闭睡眠模式下的LCD一样的小电流消耗，以迟早提高UPS的可听愤怒。

Again, it was the middle of the night and I was (delusively, as it turned out) itching to go back to sleep. So I manually shut down any devices connected to the UPS that would not respond well to a sudden power outage, and then shut down the UPS itself. The next day, I turned on UPS again and it worked for a few days, when it woke me up again in the middle of the night. At that time, I decided that it was retirement and disassembly time for this unit, although there had been more experimentation before (just in the waking hours, mind you... The constant noise actually annoys my wife). UPS will sit there and hum steadily... As long as nothing is connected to any of the battery-powered outlets. But all it takes is a small current consumption like an LCD in backlight off sleep mode to boost the UPS's audible anger sooner or later.

我们的病人，准确地说，是一个APC(现在是a施耐德电气品牌)备用ES 550VA装置BE550G：

Our patient, to be precise, was an APC(now a Schneider Electric brand) standby ES 550VA unit BE550G:

我惊讶地发现，在研究这篇文章时，APC仍然直接从公司网站上以99.99美元出售它。我的电子邮件档案显示，我大约在十年前买了三个，都是从亚马逊买的，第一个是2012年4月的49.99美元，第二个是2013年2月的55.99美元，第三个是2014年10月的49.49美元。我喜欢这些装置(以及APC和竞争对手的概念相似的装置)的原因是，电池是用户可更换的，它们是标准尺寸和规格的。一个镍镉电池迟早会坏掉，无论是因为反复的房屋电力损耗还是长期的涓流充电导致的存储能力衰减，但你可以插入一个替换电池，它就会像新的一样好。也就是说，最终内部电路本身可能会出现故障，我的设备似乎就是这种情况，UPS只能被解剖然后丢弃。

I was surprised to find that while researching this article, APC was still selling it directly from the company's website for $99.99. My email profile shows that I bought three about a decade ago, all from Amazon, the first in April 2012 for $49.99, the second in February 2013 for $55.99, and the third in October 2014 for $49.49. What I like about these units (and conceptually similar units from APC and competitors) is that the batteries are user replaceable and they come in standard sizes and specifications. A nickel-cadmium battery will die sooner or later, whether it's due to repeated house power losses or diminished storage capacity from prolonged trickle charging, but you can plug in a replacement battery and it'll be as good as new. That said, eventually the internal circuitry itself can fail, which seems to be the case with my device, and the UPS can only be dissected and then discarded.

顺便说一下，这些电池很有趣剃刀和刀片他们自己的故事。APC直接从BE550G产品页面方便地链接到公司品牌的替换电池APCRBC110，售价为$69.99。是的，你算对了…这比公司出售整个UPS(包括电池)的新价格只低30美元。也就是说，该型号中使用的电池是标准的12VDC、7Ah型号，也用于家庭安全系统的备用电源，为电动滑板车和轮椅等供电。每当我需要的时候，我都能很容易地在亚马逊和易贝上找到第三方替代品，价格大约是它的1/3；我最近甚至买了六个12v直流电源，9Ah外形完全相同的等效产品特价48.99美元。你只需要确保输出电压匹配，电荷存储规格等于或高于你要更换的，尺寸相同，以及正极和负极端子位置(说到端子，我见过两者F1和F2选项；适配器可用于按需翻译)。

By the way, these batteries are interesting razors and blades with their own stories. APC conveniently links directly from the BE550G product page to the company-branded replacement battery APCRBC110 for $69.99. Yeah, you figured it out... That's just $30 less than the company's new price for selling the entire UPS, including batteries. That is to say, the batteries used in this model are standard 12VDC, 7Ah models, and are also used as backup power for home security systems, powering electric scooters and wheelchairs, etc. I can easily find third-party alternatives on Amazon and ebay for about 1/3 the price whenever I need them; I even recently bought six 12v DC power supplies for a special price of $48.99 for an identical 9Ah equivalent. You just need to make sure that the output voltage matches, the charge storage specification is equal to or higher than the one you're replacing, the same size, and the positive and negative terminal positions (speaking of terminals, I've seen both F1 and F2 options; Adapters are available for on-demand translation).

在我们开始之前还有几个问题。正如你可能已经从我之前展示的“库存”照片中注意到的那样，BE550G结合了沿顶部边缘的四个电涌保护插座和沿底部边缘的四个插座，后四个插座都有电涌保护和电池支持。或许很明显，当驻地电源断电时，将储存的DC转换回交流电的能力是UPS的一个关键特性。该特定模型产生所谓的模拟(有时也称为修正)正弦波交流输出；更贵的型号产生“纯”正弦波，但价格大约是它的两倍。Tripp Lite的这个信息页面伊顿的一个品牌，对两种交流输出选项进行了很好的对比总结。

Just a few more questions before we get started. As you may have noticed from the "stock" photos I showed earlier, the BE550G combines four surge protection outlets along the top edge and four along the bottom edge, with the latter four outlets all having surge protection and battery support. It is perhaps obvious that the ability to convert stored DC back to AC when the on-site power is down is a key feature of the UPS. This particular model produces what is called an analog (sometimes called a modified) sine-wave AC output; More expensive models produce "pure" sine waves, but cost about twice as much. This information page for Tripp Lite, an Eaton brand, provides a good comparison of the two AC output options.

还要注意，产品名称中的“550”指的是其DC到交流“VA”输出规格，而不是其输出功率(根据产品规格表，输出功率仅为330W)。如果您想购买UPS，请确保您了解两者之间的区别并明智地选择，以避免(因为这 伊顿信息页面描述)根据所需的已连接设备的功耗需求来缩小UPS的规模。更一般地说，我发现这 伊顿信息页面成为各种UPS主题的优秀FAQ概述(我与伊顿没有特别的密切关系或其他联系；我不认为我拥有他们的任何东西。我就是喜欢他们的文档！).

Also note that the "550" in the product name refers to its DC to AC "VA" output specification, not its output power (which is only 330W according to the product specification sheet). If you want to buy a UPS, make sure you understand the difference between the two and choose wisely to avoid (as described on this Eaton information page) downsizing the UPS based on the power consumption requirements of the required connected devices. More generally, I found this Eaton information page to be an excellent FAQ overview of various UPS topics (I have no particularly close relationship or other connection to Eaton; I don't think I own anything of them. I just love their documentation! .

在概述评论结束后，让我们来看看我们的患者，这里照常显示一枚直径为0.75英寸(19.1毫米)的美国硬币，用于大小比较(BE550G的尺寸为12 x 3.3 x 7英寸，重13磅。内部装有电池):

After the summary comments, let's take a look at our patient, where as usual a US coin with a diameter of 0.75 inches (19.1 mm) is shown for size comparison (the BE550G measures 12 x 3.3 x 7 inches and weighs 13 pounds. Internal battery):

一端是一个USB端口，用于通过连接的计算机进行可选的UPS监控和控制，还有“输入”和“输出”RJ-45插头，用于对以太网连接进行电涌保护，还有一个断路器“复位”开关和一个状态LED:

At one end is a USB port for optional UPS monitoring and control via connected computers, as well as "input" and "output" RJ-45 plugs for surge protection of Ethernet connections, a circuit breaker "reset" switch and a status LED:

这里有一个“股票”视图:

Here's a "stock" view:

另一端和两侧都不那么令人兴奋(那些不是通风格栅，只是嵌在塑料里的插槽，我猜是为了手指抓握而存在的，以帮助拔掉东西？):

The other end and sides are less exciting (those aren't ventilation grilles, just slots embedded in plastic that I guess exist for finger grasping to help unplug things?). :

现在是背面，我们的通道在里面(注意四个深孔，里面有螺丝):

Now the back, our channel is on the inside (note the four deep holes with screws inside):

标签特写:

Tags Feature:

接下来，让我们打开电池盒:

Next, let's open the battery box:

两个电池端子的特写:

Close-up of the two battery terminals:

现在，让我们把那些螺丝取出来，然后进入内部，这最终变得简单明了:

Now, let's take those screws out and go inside, which finally becomes simple and clear:

这是四个电涌专用插座，在它们和内部之间有一个塑料屏蔽:

Here are four surge specific outlets with a plastic shield between them and the interior:

PCB下方(左侧是我们之前在电池盒中看到的红色和黑色电缆和端子):

Below the PCB (on the left side are the red and black cables and terminals we saw earlier in the battery case):

是另一个塑料保护罩，这次它下面有四个电涌加电池插座:

It's another plastic protective cover, this time with four surge and battery sockets underneath it:

主导景观的变压器易于提升(反映了更通用的模块化和易于拆卸的单元组装技术):

The transformers that dominate the landscape are easy to lift (reflecting the more common modular and easily disassembled unit assembly techniques):

让我们更仔细地看一下顶部边缘插座，它的屏蔽是由一个螺钉固定的:

Let's take a closer look at the top edge socket, whose shield is held in place by a screw:

我很惊讶地看到，考虑到这些应该是浪涌保护插座，它们似乎是直接从交流电缆馈电的(例如，与它们和外界之间的串联电路相比)。也就是说，我是一个公认的“数字”人，没有特别的电力电子专业知识，所以我将依靠更多知识渊博的读者在评论中接受教育:

I was surprised to see that, given that these are supposed to be surge protected sockets, they seem to be fed directly from the AC cable (for example, compared to the series circuit between them and the outside world). That said, I'm an acknowledged "digital" person with no particular power electronics expertise, so I'll be relying on more knowledgeable readers to be educated in the comments:

现在，对于其他(底部边缘)插座，都有电池支持和浪涌保护。像之前的变压器一样，PCB毫不费力地从机箱中取出:

Now, for the other (bottom edge) sockets, there is battery support and surge protection. Like the transformer before it, the PCB is effortlessly removed from the case:

要完全拆除PCB和变压器，首先需要将它们与两个插座组之间的布线分开，这是一个简单的操作，因为连接器很容易拆卸:

To completely remove the PCB and transformer, you first need to separate them from the wiring between the two socket sets, which is a simple operation because the connectors are easy to remove:

以下是现在独立的变压器的一些特写镜头(红线源自电池盒):

Here are some close-up shots of the now-independent transformer (red line from the battery case):

和PCB(黑线，这一次，起源于电池盒):

And the PCB(black line, this time, originating in the battery box):

重申我已经承认的，我不是一个“权力”的家伙，所以我将把它留给你，读者，来说出评论中看起来有趣的事情，包括注意到膨胀的电容器或其他我可能忽略的缺陷，并可能解释UPS的紧急错误行为。我将暂时保留已拆卸的设备，以便可以回复收到的查询:

To reiterate what I've already admitted, I'm not a "power" guy, so I'll leave it up to you, the reader, to call out things that seem interesting in the comments, including noticing bloated capacitors or other defects I may have overlooked and possibly explaining UPS's urgent misbehavior. I will keep the disassembled device for the time being so that I can respond to incoming queries:

最后，这里是机箱顶部内部的一些视图，PCB和变压器现已移除:

Finally, here are some views of the interior of the top of the case, with the PCB and transformer now removed:

就这样，你可以在评论中表达你的想法了！

That's it, you can express your thoughts in the comments!