JPS5942976U

JPS5942976U - Insulation resistance tester

Info

Publication number: JPS5942976U
Application number: JP13934782U
Authority: JP
Inventors: 宮沢　芳美
Original assignee: 日置電機株式会社
Priority date: 1982-09-14
Filing date: 1982-09-14
Publication date: 1984-03-21

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、従来装置の例を示す概略回路図、第２図ない
し第４図はいずれもこの考案による装置の実施例を示す
もので、第３図ないし第４図は第２図の変形実施例であ
る。図中、２．３は測定用端子、４，５はテストリード棒、
８は電源スィッチ、１０は直流高電圧発生回路、１１は
指示回路、１２．３０は電流制限回路、２０．２１は切
換スイッチ、２２は直流電流計、２３．２８はダイオー
ド、２４．２５゜２９は保護抵抗、ｂ、　ｄは直流高電
圧発生回路１０の低電位側端子を示す。Fig. 1 is a schematic circuit diagram showing an example of a conventional device, Figs. 2 to 4 all show embodiments of the device according to this invention, and Figs. 3 to 4 are modifications of Fig. 2. This is an example. In the figure, 2.3 is a measurement terminal, 4 and 5 are test lead rods,
8 is a power switch, 10 is a DC high voltage generation circuit, 11 is an indicator circuit, 12.30 is a current limiting circuit, 20.21 is a changeover switch, 22 is a DC ammeter, 23.28 is a diode, 24.25° 29 denotes a protection resistor, and b and d denote low potential side terminals of the DC high voltage generation circuit 10.

Claims

[Scope of utility model registration request]

DC voltage generation means including an oscillation circuit, a pair of measurement terminals connected to a high potential side terminal and a low potential side terminal of the DC voltage generation means, and the low potential side terminal and the one measurement terminal. and a measurement value indicating circuit consisting of a series circuit including a DC ammeter and a rectifying element connected between the other measurement terminal and the low potential side terminal. a first circuit having a first changeover switch and a current limiting resistor connected; a second circuit connected in parallel to the one measurement terminal so as to serve as a bypass of the indicator circuit; a second changeover switch that connects either the instruction circuit or the second circuit between the low potential side terminal and the one measurement terminal in connection with the switching operation of the first changeover switch; An insulation resistance meter comprising: