一、BK此种变压器是适用于50～60Hz电压至500V的 电路中，通常用作机床机床,机械设备,输配电糸统设备控制电器或局部照明灯及指示灯的电源之用,采用的都是全新铜线的变压器. 但若长期负载使用,总功率不得超过额定容量80% 

二、结构特征
BK变压器按结构可分为壳式，按安装方式可分为立式。

三、型号及其含义

四、使用环境
1、周围空气温度-5℃至+40℃，24小时的平均值不超过+35℃；
2、安装地点海拔不超过2000m；
3、大气相对湿度在周围空气温度为+40℃时不超过50%，在较低温度下可以有较高的相对温度，最湿月的平均最大湿度为90%，同时该月的月平均最低温度为+25℃，并考虑到因温度变化发生在产品表面的凝露。

五、外形及安装尺寸

BK,JMB,BJZ,DG,BZ(BKZ)BKCseries illuminates,(Rectifier) a light control transformer

  Exchanges electric circuit insind that be applicable to 50-60hzs,it is extensive is general With the machine equipments inside in electronics industry or work mineral,machine bads The control power supply of the electric appliances,the safety illuminates the power supplyof the desingnation light it use.

  The first time class rounds an all sums for separating to round the system,being the timeclass only reaching first roungs set ,it carry thr transformer settles the capacity ,time The classpresses if there is control ,illuminate and instructions light rounding concurrently set ,each round a capacity allotment round the system ,to single roung set and have the middle takeout A sum for of transformer ,its eachly in the center take out a capacity ,all smaller transformer settles the capacity ,only have the tallest electric voltage output to carry load The negative sum settles the capacity