Low Contact Resistance Neutral Block Terminal Reduces Energy Loss From The Source

In power transmission and distribution systems, the neutral terminal serves as the core node for current return, and its contact resistance directly determines the degree of energy loss. Traditional neutral wire terminals often experience issues such as oxidation and loosening of the contact surface due to improper material selection, structural design defects, or installation process deviations, resulting in increased contact resistance. When current passes through high resistance terminals, a significant Joule heating effect is generated, which not only causes a large amount of electrical energy to be wasted in the form of heat energy, but also may lead to safety hazards such as terminal overheating and accelerated insulation layer aging. Long term operation will also increase system maintenance costs.

The low contact resistance neutral block terminal solves the energy loss problem from the source through a triple core design. Firstly, a high conductivity copper substrate is used in the material, and an anti-oxidation metal layer such as tin and silver is plated on the contact surface, which can improve the current conduction efficiency and prevent air and water vapor from corroding the contact surface, ensuring long-term stability of the resistance value. Secondly, innovative designs such as thread self-locking and double spring plate compression are adopted in the structure to form a tight and uniform pressure contact between the terminal, wire, and cabinet, avoiding contact gaps caused by vibration, thermal expansion and contraction, and completely eliminating resistance mutations caused by "virtual connections". Finally, precision CNC machining and ultrasonic cleaning technology are introduced into the production process to ensure that the flatness error of the contact surface is controlled within 0.02mm, maximizing the reduction of the "path resistance" of current conduction.

Taking the industrial power distribution scenario as an example, a manufacturing factory replaced traditional neutral wire terminals with low contact resistance models. Through an energy monitoring system, it was found that the monthly average energy consumption of a single distribution circuit decreased by 3.2%, and the surface temperature of the terminals decreased by 15-20 ℃. Based on 500 power distribution circuits in the factory, approximately 28800 kWh of electricity can be saved annually, equivalent to a reduction of 9.2 tons in standard coal consumption. At the same time, the frequency of faults caused by terminal overheating can be reduced by more than 80%. This solution of reducing resistance from the source of current transmission not only brings direct energy-saving benefits to enterprises, but also meets the needs of green power system construction under the "dual carbon" goal, becoming an important breakthrough for energy efficiency upgrading in the industrial and civilian distribution fields.