| 摘要 |
#CMT# #/CMT# The device has electrode layers (20, 30) arranged on respective surfaces of a zinc oxide ceramic body (10), where the layer (20) has an electrode (21) provided with a ground terminal (a) on the body. Zinc oxide ceramic bodies (40, 60) are arranged on the layer (30), where the body (60) is arranged at a surface of the body (40). Electrode layers (50, 70) are arranged on surfaces of the bodies (40, 60), respectively, and have electrodes (51, 71) with respective phase conductor and neutral input terminals (b, c) on the body (40), where the layers (20, 30, 50, 70) are made of silver paste. #CMT# : #/CMT# An independent claim is also included for a method of manufacturing a three phase protection device. #CMT#USE : #/CMT# Used for protecting a ground-neutral-phase with three wires, against high voltage. #CMT#ADVANTAGE : #/CMT# The device simultaneously protects the abnormal situation among three lines and completely dissipates the heat of a product from an utilization surface such that the high voltage current passing through the surface is reduced, thus improving the life duration and reliability of the product. The device ensures three actions independent on a protection component against the high voltage to provide total protection to the three lines, and requires only three terminals among the three lines to eliminate the need of additional protection devices, thus reducing the fabrication cost of the device. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a transversal sectional view of a ground-neutral-phase protection device against high voltage. a : Ground terminal b : Phase conductor input terminal c : Neutral input terminal 10, 40, 60 : Zinc oxide ceramic bodies 20, 30, 50, 70 : Electrode layers 21, 51, 71 : Electrodes. |
