Dongtang Electric enters Shandong Energy Xin Kuang Inner Mongolia Energy Group Co., Ltd.

In the golden autumn of October, Dongtang Electric visited Shandong Energy Xin Kuang Inner Mongolia Energy Group Co., Ltd., where we joined with senior leaders from Shandong Energy and heads of various mines to introduce and share our newly developed, cutting-edge product—the explosion-proof and intrinsically safe leakage current testing device for mining applications. We also provided a detailed presentation and engaged in in-depth discussions.

At the meeting, our company provided a detailed explanation of the “mine-used explosion-proof and intrinsically safe leakage current testing device,” covering aspects such as safety protection, convenience and speed, accuracy and reliability, flexible compatibility, reduction in manpower with increased efficiency, and network information capabilities.

Detailed Rules for the Installation, Maintenance, and Repair of Underground Leakage Protection Devices 2022 Article 18 of the “Edition” stipulates: “ A remote earth-fault test must be performed on the feeder switch once every month. ” The number of participants required for the trial is: 3-5 Person. During the test, first de-energize and lock out the vacuum magnetic starter, then open the housing of the magnetic starter and connect the test resistor ( 660V Use 11K10W Resistance, 1140V Use 20K10W The resistor—one end is connected to a phase bolt below the contactor in the electromagnetic starter, while the other end is connected to the grounding bolt on the starter’s housing. Afterward, reassemble the starter’s enclosure and, following confirmation with personnel near the feeder switch, proceed with energizing the system. After starting the electromagnetic starter, observe whether the feeder switch trips promptly. This will allow you to determine whether the feeder switch operates reliably. After completing the test, remove the test resistor and restore the system to its original configuration.
     According to the relevant provisions of the "Detailed Rules for the Three-Stage Protection of Underground Power Supply in Coal Mines," the leakage protection device operating underground in coal mines,
A remote manual earth-fault trip test must be conducted once every month.

Underground remote earth-fault testing is extremely important, yet the current testing situation is not optimistic. During testing, operators must manually connect test resistors, the procedure is cumbersome, power outages last for a relatively long time, and there is a risk of electric shock to personnel. The risk is relatively high, and there are safety hazards. The “Mine-Proof and Intrinsically Safe Leakage Current Testing Device” is safe, convenient, labor-saving, eliminates the need to go underground, and can record data. The installation and use of this equipment fundamentally solve this issue.

Through this exchange and their understanding of the product, the relevant leaders of Shandong Energy Xin Kuang Inner Mongolia Energy Group Co., Ltd. expressed strong approval of the “Mine-Explosion-Proof and Intrinsically Safe Leakage Current Testing Device.” They immediately organized the procurement process and initiated trials of the related product.

This promotional event not only showcased Dongtang Electric’s corporate strengths and product features, but also laid a solid foundation for the cooperative development between Dongtang Electric and Shandong Energy Xin Kuang Inner Mongolia Energy Group Co., Ltd. The future fruits of our collaboration will surely be even more abundant!