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求大神讲一下安装变压器注意事项有哪些？

求大神讲一下安装变压器注意事项有哪些？

浏览：31次 | 提问时间： 07-01 04:30

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3个答案

谁也不是谁的谁 07-01 04:31

注意事项一：供电
为保证变压器正常工作，供电电源不宜低于球机输入电压的标称值。当标称值为24VAC，电压波动不宜超出±25%。变压器常见工作电压为24VAC。目前市场上存有220VAC型号变压器，其实质将变压器内置于球罩，变压后给变压器供电。布线时应强调强、弱电分开，以避免强电对弱电的干扰。球机内部空间有限，内置变压器使强弱电共处，从而影响弱电信号。此外，内置变压器会加重散热负担，从而增加了内置电路烧坏的可能性。
注意事项二：接地
变压器的接地主要分为外壳接地和内部电气接地。外壳接地主要用来防止静电积累、电气漏电等，室外变压器还特别要加装外部防雷措施。一般来说，安装在立杆支架上的室外变压器外壳由于旋接在金属支架上已自然形成接地保护，可不做特别处理。希望我的回答能帮到你。

以鹿 07-01 04:40

注意变压器就位:
1、变压器就位可用汽车吊直接进行就位，由起重工操作，电工配合，可用道木搭设临时轨道，用倒链拉入设计位置。就位时，应注意其方位和距墙尺寸应与设计要求相符，允许误差为±25mm，图纸无标注明，纵向按轨道定位，横向距离不得小于800mm，距门不得不于1000mm，并使屋内预留吊环的垂线位于变压器中心，以便于进行吊芯检查，。
2、变压器基础的轨道应水平，轨距与轮距应配合，装有气体继电器的变压器顶盖，沿气体继电器的气流方向有1.0%～1.5%的升高坡度。变压器与封闭母线连接时，其套管中心线应与封闭母线中心线相符。变压器宽面推进时，低压侧应向外；窄面推进时，油枕侧应向外。装有开关的一侧操作方向上应留有1200mm以上的距离。装有滚轮的变压器，滚轮应转动灵活，在变压器就位后，应将滚轮用能拆卸的制动装置加以固定。

行李轻便 07-01 04:48

一、电力变压器停送电操作流程：
1、一般变压器充电时应投入全部继电保护,为保证系统的稳定,充电前应先降低相关线路的有功功率。变压器在充电或停运前,必须将中性点接地刀闸合上。
2、一般情况下,220KV变压器高、低压侧均有电源时,送电时应由高压侧充电,低压侧并列;停电时则先在低压侧解列。
3、环网系统的变压器操作时,应正确选取充电端,以减少并列处的电压差。变压器并列运行时,应符合并列运行的条件。
二、配电变压器在进行停送电操作过程中应注意以下问题：
(1)不允许带负荷拉、合高压跌落开关，以防电弧引起短路或烧伤事故。
(2)配电变压器停电时，先拉低压分路开关，再拉低压总开关，最后拉高压跌落开关。送电顺序与此相反。
(3)为防止弧光短路，在拉高压跌落开关时，应先拉中相，再拉背风相，后拉迎风相。合时，顺序与此相反。
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