作者：精致而苍老的电脑小猪
针对主流玩家推出的 ACER Nitro XV272U KV 电竞显示器，27 寸 2K 分辨率，搭配最高可达 170Hz 的 1ms IPS 面板，还支持 AMD FreeSync Premium、HDR 400，不仅满足游戏玩家的需求，更有优异的色彩还原能力，用于日常办公、影音观赏或创作使用都很适合。
虽然大尺寸如 32 寸以上的显示器看来很爽，但以游戏、日常工作等多用途来说，27 寸的最佳观看距离更适合作为电脑显示器来使用，2560 x 1440 分辨率的文字大小适中，较长时间使用也很舒适，对于大多数玩家来说，27 寸的大小绝对是首选。
外观与规格
XV272U KV 采用 27 寸 2560 x 1440 144 Hz Fast IPS 快速液晶面板，可视角度约 178 度，原生 144Hz 刷林率，并可透过开启 Overdrive 达到 170Hz，拥有 VESA DisplayHDR 400 认证。 色彩覆盖率达 95% DCI-P3，或 100% sRGB，Delta E 1，颜色还原能力相当不错。
XV272U KV 外观设计维持了 ACER 常用的中规中矩造型，搭配圆形底座与柱状显示器支架，左右两侧与上方框体都维持约 8mm 的厚度，下巴带有包含亮度、色温与人体感应等侦测功能，宽度较宽且向前突出，如果有意利用这款显示器组建三屏幕的玩家需特别注意可能会有彼此干涉的状况。
显示器背面的上半部分采用横向发丝纹路设计，左上带有 ACER logo，中间的倒 Y 造型做有散热开孔。 柱状的显示器支架虽然简约，但在接近圆盘底座带有理线功能，但在布线上也不是没缺点，偏细的支架与布线位置，让电源、信号线等线材会露出来，对整齐度有要求的用户得多花点心思整理。
设定透过右侧背后的四个按键（最上方按键为电源键）与五向摇杆来操作，整体来说还算顺手。 显示器本身可做顺时针、逆时针的 90 度垂直旋转，也支持了 12mm 的高度调整、俯仰角度 -5 ~ 25 度，圆形底座也可 360 度旋转，并支持 VESA 100mm x 100mm 的壁挂架锁点，使用上的角度可以随心所欲，让你怎么调整都没问题。
I/O 接口部分，XV272U KV 提供了 1 组 DisplayPort 1.2、2 组 HDMI 2.0，1 组 USB 3.0 Type-B 用于连接电脑，并额外提供显示器底下的 2 组、左侧 2 组，共四组 USB 3.0 Type-A 接口，还内置两颗 2W 喇叭与 1 组 3.5 mm 音源输出。 配件则有 DisplayPort、HDMI 和 USB 3.0 传输线各 1 条及标准电源线。
这款显示器也将电源模块内置在了显示器中，使用时只需通过标准电源线连接即可，不需要外拖一组大大的变压器，看起来清爽不少。
功能设置与 Display Widget
屏幕快速按钮默认提供模式切换、亮度、信号源切换，也可以针对需求自定义两组快速功能。
模式切换提供有包括动作、竞速、运动模式、ECO、图形、HDR 与标准模式。 各自带有独特的色彩设定文件，用户也可自定义色彩模式。
显示器上也可显示刷新频率、自定义瞄准点、显示反应速度、以及 FPS 游戏玩家最需要的黑色增艳功能，透过这一功能可以将游戏画面中的暗部细节更完整地呈现出来，并尽可能保留亮部细节。
如果嫌操作背后的实体按键调整显示器太麻烦，也可透过 Display Widget 程序，用鼠标直接在系统上操作大多数的功能设定，真的是方便了不少。
此外这款显示器也加入了低蓝光、防眩光、不闪频技术，以及 LightSense、ColorSense、ProxiSense 等功能，前两者能够根据周遭环境光线自动调整显示器的亮度与色温设定，降低眼睛疲劳，后者则能智能侦测人体，当用户不在显示器前会自动进入省电模式；重新侦测到人体后也会自动开启屏幕。
亮度与色彩还原表现
透过 Spyder 5 Elite，我们做了基本的屏幕色彩校色与验证，经校色后的 XV272U KV，色域空间可达 92% DCI-P3、100% sRGB，以一般人的使用用途来说，只要能达到 100% sRGB，就有相当好的色彩显色能力了。 另外在色调响应亮度表现也几乎完全贴合预定的曲线。
Delta E 测量除了蓝、绿色外，基本上都落在 1 ~ 1.5 之间，平均测量值在 1.93，也算相当不错了。
透过照片来检视显示器的色彩还原，整体而言，XV272U KV 相当忠实地还原了各种颜色，并保有够丰富的阶调，无论是色彩鲜艳的蔬果、风景或动物都栩栩如生。
总结
ACER Nitro XV272U KV 这款 27 寸显示器，除了拥有 144Hz 的刷新率、1ms 反应时间的 FastIPS 面板、通过 DisplayHDR 400 认证，支持 AMD Free Sync Premium 同步技术，满足游戏玩家的需求，也标示有色域覆盖率达 95% DCI-P3 与不错的色彩准性及还原能力，适合各种用途用户使用。
屏幕色彩支持 1.07 亿色（8bit FRC），也可以通过降低刷新率至 120Hz 来达到 10bit 色彩，屏幕本身各向可调整角度相当大，还内置两颗 2 瓦喇叭和 4 个 USB 3.2 Gen1 Type-A 插槽，让 I/O 扩充性大大提升，加上目前市场售价为 2299 元，几乎可说是目前 3 千元内 27 寸 2K 144Hz 显示器的最佳选择之一！
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装机好物之 Ⅴ】游戏显示器，也能兼顾好色彩 - ACER Nitro XV272U KV 27寸电竞显示器动手玩
游厚尝5068我的用的设备10KV,功率2000KW,用什么样的变压器 -
云饲贺18050171367 ______ 看你的功率因数设计的大小呀.你的2000KW是有功功率,假如是0.9的功率因数,那么你的变压器的视在功率就是2000/0.9=2222KW,j假如功率因数是0.95,那么需要的就是2105KW 是这样计算的,有功功率的平方+无功功率的平方=视在功率的平方 有功功率/视在功率=功率因数.
游厚尝5068各位老大,最大负载10KW的用户,从10KV的干线上分流,要配多大的变压器?? -
云饲贺18050171367 ______ 你这个变压器也太小了嘛 才12.5KVA的容量就够了
游厚尝506810kv变压器规格的选择都要看哪些参数 -
云饲贺18050171367 ______ 10kv变压器规格的选择都要看的参数: 一台额定电110kv/35kv/10kv三侧(圈)变压器.额定功率50000kvA,SFZ-三相三圈油浸式电力变压器 11-设计序号,属低损耗节能变压器,50000/110-指额定容量50000kvA(50MvA),额定电压110kv 50MVA/50MVA/15MVA-容量分别指110kv侧50000kvA 35kv侧50000kvA 10kv侧15000kvA 110kv侧8挡调压,1.25%变压 35kv侧2挡可调2.5%变压,Yn,yn0,d11-指连接组别,高压侧星形接线、中性点带地刀带避雷,中压侧星形接线、星点经消弧线圈接地,低压侧为三角形接线.
游厚尝5068计算负荷为1480KW,想规划一个10KV箱式变电站,应该选多大的变压器,我选3X800KVA的可以吗 -
云饲贺18050171367 ______ 计算负荷P=√3*UIcosφ,其中U=0.38kV,cosφ取0.8,则I=P/√3*Ucosφ=1480/√3*0.38*0.8=2811A.变压器:S=√3*UI,其中U=0.4kV,I=2811A,则S=√3*0.4*2811=1947kVA.可选2000kVA的.如果有静电电容器无功补偿,提高功率因数到0....
游厚尝506810KV侧高压,低压侧380V,低压负荷250KW,用多大容量的变压器,多大截面的高压电缆和低压电缆,请给公式 -
云饲贺18050171367 ______ 低压负荷250KW,工作电流是:475A 变压器的容量不小于:S(视在功率)=1.732*0.4*475=329KVA 10KV高压侧,额定电流:I1=329/(1.732*10)=19A 10KV高压侧选用导线面积:S=19/3=6.3平方毫米的铜导线 根据导线规格高压侧应选用10平方毫米的铜导线 侧低压侧380V,额定电流:I1=329/(1.732*0.4)=475A 低压侧380V选用导线面积:S=475/2=238平方毫米的铜导线 根据导线规格低压侧应选用240平方毫米的铜导线
游厚尝5068用电负荷是430KW,高压10KV,需选用多大的变压器 -
云饲贺18050171367 ______ 选630KVA的变压器
游厚尝5068我的三相功率满负荷是10KV,单相功率满负荷是200KV ,请问我需要多大KVA的变压器?谢谢
云饲贺18050171367 ______ 需要(200KV+10KV/3)/80%*3=762KVA的变压器
游厚尝5068一条10KV的线路可以加一个多大的变电器
云饲贺18050171367 ______ 是变电器还是变压器啊!你要先说出线路的线径,才好计算容量的大小!
游厚尝5068我厂10KV变400,平时功率700 - 800KW,选用多大容量变压器合适? -
云饲贺18050171367 ______ 这个问题,你可以直接找变压器厂协商的,你不要我们的变压器,我也不告诉你哈哈.我也不会算这个,你可以给你想买他们变压器的厂商的技术部打电话问问,或者直接找销售分公司,你这个变压器也太小了,应该是配电吧?我还真没接触过配电,其实1000和1250或者再大点,费用差不了多少的,可以去查查表格,我预算预留30的余量(我查文章似乎是30%余量),这就是说800的设计容量是800/0.7≈1250KVA,但是考虑到以后扩大生产可以选择1600,价格总比以后再换的好了.变压器可以允许短时间的过载120%运行,不过很影响寿命.我猜应该是了吧,我只对电力变了解一点,对配变不是很清楚
游厚尝506835kv变10kv变压器需要多大的变压器?
云饲贺18050171367 ______ 理论上来说,35KV变10KY,多大的变压器都可以变,按照现在制造变压器的规格,最小的是5KVA,这样小的都是特殊变压器,如电压互感器等. 按照供电电压与输送容量的关系要求,要用35KV变压器或35KV输电线,需要负荷达到2000KW-10000KW时或输送距离在20-50公里.