baoding electric co., ltd.disclosed in the utility model is a novel transformer neutral-point ground resistor cabinet apparatus that is secure and reliable. the apparatus consisting of a grounding transformer, a grounding resistor, an intelligent controller, a voltage transformer, a current transformer, an isolation disconnecting link and a box shell is characterized in that one end of the grounding transformer is connected with a power system bus; one end of the grounding transformer is connected to the voltage transformer by the isolation disconnecting link; the voltage transformer is connected with the ground resistor; and the ground resistor is connected with the current transformer that is grounded. the ground transformer employs a z type wire connection-based transformer; and the structure of the ground resistor is in a wire winding state or a grid state, the resistance value range is from 1 ohm to 2000 ohm, and the value of the current flowing through the resistor is from 1a to 2000a.
保定众邦电气有限公司公开了一种新型的变压器中性点接地电阻柜装置，安全可靠。该装置由接地变压器、接地电阻、智能控制器、电压互感器、电流互感器、隔离刀闸、箱壳的特征是在接地变压器的一端与电源系统总线;接地变压器的一端被隔离断开连接电压互感器;电压互感器的接地电阻;和接地电阻与电流互感器，接地。接地变压器采用z型接线的变压器;和地面电阻的结构是在一个绕线或网格状态，电阻值的范围从1欧姆到2000欧姆，和流过电阻的电流的值是从1a至2000a。
