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|1. (WO2018045935) HOUSING STRUCTURE OF PLANAR RESISTOR|
|Applicants:||NR ELECTRIC CO., LTD
NR ENGINEERING CO., LTD
NR ELECTRIC POWER ELECTRONICS CO., LTD.
|Title:||HOUSING STRUCTURE OF PLANAR RESISTOR|
A housing structure of a planar resistor. Electrode extraction ends (4) of the planar resistor are on the same side of the resistor. A housing structure body (1) is made of an insulating material covering the surface of the resistor. An insulating structure (3) having an opening facing toward or away from the resistor is provided around each electrode extraction end (4) of the resistor. The insulating structure (3) is configured to be a multi-tooth or multi-groove insulating structure. Compared with the prior art, a structure having teeth or slots increases the surface creepage distance of an insulating material between two electrodes. Since the electrodes are mounted toward different directions, and a groove-shaped opening is designed to face inward or outward, dust and dirt can hardly enter the resistor, so that the operating reliability and maintenance-free property of the resistor are improved.