JYF-0.5低压预付费计量装置， 主要适用于额定频率为50Hz或60Hz， 额定电压为0.5kV及以下系统的电能计量。 当预付费电能表输入卡有电费信号输入时， 可正常供电， 一但无电费， 则计量箱自动断电， 达到预付费吕的， 解决了电力部门电费难收的问题。
本产品在变压器的二次侧加装了防窃电封盒， 用电缆直接引入综合计量箱中， 杜绝了窃电。
本产品也可加装短路锚， 增加变压器的保护功能（过流速断）。 更适宣台区、 照明、 排灌及工矿等用电场所， 不需要建立配电室，直接实现柱上安装， 减少占地， 方便维修。

JYF-0.5 type low voltage pre paid power metering device. suitable for 50Hz or 60Hz three-phase AC rated voltage of 0.5kV power grid for electric metering. When the prepayment electric energy meter input card has electricity signal input, can be normal power supply, but no electricity, the metering box automatically power off, to achieve the purpose of prepaid, to solve the problem of electricity tariff collection.
This product in the two side of the transformer with anti-theft seal box, cable directly into the integrated metering box, prevent theft.
This product can also be equipped with a circuit breaker to increase the protection function of the transformer (over cur­rent velocity). More suitable for Taiwan area, lighting, drainage and mining in the field, does not need to set up a distribution room. direct installation, reduce the area of column. convenient maintenance.

 1、装置种类户外，

2、环境温度－25℃～＋40℃，
3、无腐蚀性气体。

1.Device type: outdoors,
2.Ambient temperature: -25℃～＋40℃，
3.Non corrosive gas.

本产品由控制柜和预付费电能表箱组成控制柜直接安装在变压器二次出线上， 变压器二次出线直接接交流接触器进线侧， 交流接触器出线侧的出线穿过母线型电流互感器， 接置于控制柜顶部的套有瓷瓶的螺杆， 螺将作为用户接线之用。预付费电能表箱内电能表不仅能计电费而且当无电费时， 电能表的控制回路使控制桓动作， 切断电源， 达到有费供电无费断电的目的。

This product is composed of a control cabinet and prepayment meter box control cabinet directly installed in the transformer two wire, two wire transformer is directly connected to the inlet side of AC contactor, AC contactor outlet side of the outlet through the bus type current transformer is connected with the top of the control cabinet set a porcelain screw, screw as a user connection wire. Pre­paid electric energy meter box electric energy meter can not only account for electricity, and when no electricity, electric energy meter control circuit to control cabinet action, cut off the power supply, to achieve the purpose of power consumption without charges.