欢迎访问:济南沃顿石油化工有限公司!
一键分享网站到:
服务热线
13370501966
网站首页
公司简介
产品中心
新闻动态
生产设施
在线留言
联系我们
咨询热线 13370501966

新闻动态

当前位置:首页-新闻动态
教你快速计算变压器容量

1如何选择变压器的额定电压与额定容量

1 how to choose the rated voltage and rated capacity of transformer
变压器的额定电压选择
Selection of rated voltage for transformers
济南变压器厂http://www.jnwdsh.com高压侧电压与所接入电网电压相等,低压侧电压比低压侧电网的电压高10%或5%(取决变压器电压等级和阻抗电压大小)
The high voltage side voltage is equal to the access voltage, and the voltage at the low voltage side is 10% or 5% higher than the voltage of the low voltage side grid (depending on the transformer voltage level and the impedance voltage)
2变压器容量计算公式
2 calculation formula of transformer capacity
每相最大负载功率的计算
Calculation of maximum load power per phase
将A相、B相、C相每相负载功率独立相加,如A相负载总功率10KW,B相负载总功率9KW,C相负载总功率11KW,取最大值11KW。(注:单相每台设备的功率按照铭牌上面的最大值计算,三相设备功率除以3,等于这台设备的每相功率。)
A phase, B phase, C phase, each phase of the load power is added separately, such as A phase load, total power 10KW, B phase load, total power 9KW, C phase load, total power 11KW, take the maximum value of 11KW. (Note: the power of each phase of the single-phase equipment is calculated according to the maximum value above the nameplate. The power divided by the three-phase equipment divided by 3 is equal to the power of each phase of the equipment. )
例如:C相负载总功率=电脑300WX10台)+(空调2KWX4台)=11KW

济南变压器厂


For example: C phase load total power = computer 300WX10) + (air conditioning 2KWX4) =11KW
三相总功率的计算
Calculation of total power of three-phase
11KWX3相=33KW(变压器三相总功率)
11KWX3 phase =33KW (transformer three-phase total power)
三相总功率/0.8,这是最重要的步骤,目前市场上销售的变压器90%以上功率因素只有0.8,所以需要除以0.8的功率因数。
The three-phase total power /0.8, which is the most important step, currently sold on the market more than 90% of the transformer power factor is only 0.8, so you need to divide the power factor by 0.8.
33KW/0.8=41.25KW(变压器总功率)
33KW/0.8=41.25KW (transformer total power)
41.25KW/0.85=48.529KW(需要购买的变压器功率),那么在购买时选择50KVA的变压器就可以了。
41.25KW/0.85=48.529KW (the transformer power to be purchased), then it is OK to choose the 50KVA transformer at the time of purchase.
变压器容量计算易混淆的问题
The confusing problem of transformer capacity calculation
1、变压器的额定容量,应该是变压器在规定的使用条件下,能够保证变压器正常运行的最大载荷视在功率;
1, the rated capacity of transformers should be the transformer under the specified use conditions, to ensure the normal operation of transformers maximum load apparent power;
2、这个视在功率就是变压器的输出功率,也是变压器能带最大负载的视在功率;
2. This apparent power is the output power of the transformer and the apparent power of the transformer with the maximum load;
3、变压器额定运行时,变压器的输出视在功率等于额定容量;
3. When the transformer is rated, the output power of the transformer is equal to the rated capacity;
4、变压器额定运行时,变压器的输入视在功率大于额定容量;
4, transformer rated operation, the transformer input as power is greater than the rated capacity;
5、由于变压器的效率很高,一般认为变压器额定运行时,变压器的输入视在功率等于额定容量,由此进行的运算及结果也是基本准确的;
5. Because of the high efficiency of transformer, it is generally believed that when the transformer is rated, the input of the transformer is equal to the rated capacity, and the operation and the result are basically accurate;
6、所以在使用变压器时,你只要观察变压器输出的电流、电压、功率因数及其视在功率等于或小于额定容量就是安全的(使用条件满足时);
6, so when you use a transformer, you just observe the transformer output current, voltage, power factor and its apparent power is equal to or less than the rated capacity is safe (when the conditions are met);

网站首页 公司简介 产品中心 新闻动态 生产设施 在线留言 联系我们
contact us 联系我们
地址 济南市长清区文昌办事处南王村村北
LANDLINE 13370501966
QR code 关注我们
二维码 拿出手机扫一扫