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1. (WO2018045935) HOUSING STRUCTURE OF PLANAR RESISTOR

Pub. No.:    WO/2018/045935    International Application No.:    PCT/CN2017/100451
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Wed Sep 06 01:59:59 CEST 2017
IPC: H01C 1/02
Applicants: NR ELECTRIC CO., LTD
南京南瑞继保电气有限公司
NR ENGINEERING CO., LTD
南京南瑞继保工程技术有限公司
NR ELECTRIC POWER ELECTRONICS CO., LTD.
常州博瑞电力自动化设备有限公司
Inventors: ZHANG, Xiang
张翔
CHEN, Chihan
陈赤汉
LI, Zhao
李钊
SONG, Ge
宋戈
ZHENG, Li
郑力
YANG, Fan
杨帆
Title: HOUSING STRUCTURE OF PLANAR RESISTOR
Abstract:
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.