JPS59135097U

JPS59135097U - Starting device for electric motor for submersible pump

Info

Publication number: JPS59135097U
Application number: JP3019383U
Authority: JP
Inventors: 畠中　祥一; 雅和山本
Original assignee: 株式会社荏原製作所; 株式会社荏原電産
Priority date: 1983-03-01
Filing date: 1983-03-01
Publication date: 1984-09-10

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 drawings]

第１図はこの考案の一実施例を示す説明図、第２図は他
の実施例を示す部分説明図である。１・・・・・・エンジン発電装置、２・・・・・・エン
ジン、３・・・・・・発電機、４・・・・・・励磁電流
制御回路、５・・・・・・帰還信号生成回路、６・・・
・・・制御信号生成回路、７・・・・・・励磁回路、８
・・・・・・保護回路、１２・・・・・・電源部、ＣＴ
・・・・・・変流器、Ｌ・・・・・・リアクトル、Ｒｆ
・・・・・・整流器、Ｒｙ・・・・・・保護継電器、ｗ
ｙ・・・・・・液面検出継電器、Ｍ・・・・・・電動機
、Ｐ・・・・・・水中ポンプ。１　　　　　　　　　　　　　「↑−１ｔ−−−−−Ｉ
／−（２Ｌ３Ｌ−一一一−FIG. 1 is an explanatory diagram showing one embodiment of this invention, and FIG. 2 is a partial explanatory diagram showing another embodiment. 1... Engine generator, 2... Engine, 3... Generator, 4... Excitation current control circuit, 5... Return Signal generation circuit, 6...
... Control signal generation circuit, 7 ... Excitation circuit, 8
...Protection circuit, 12...Power supply section, CT
...Current transformer, L...Reactor, Rf
... Rectifier, Ry ... Protective relay, w
y: Liquid level detection relay, M: Electric motor, P: Submersible pump. 1 ``↑-1t----I
/-(2L3L-111-

Claims

[Claims for Utility Model Registration] An engine power generation device 1 consisting of an engine 2 and a generator 3 driven by the engine 2 to supply power to a submersible pump motor M; and power supply from the generator 3 to the motor M. at least a protective relay Ry that detects an open phase and cuts off the power supply to the motor M, and a protective relay Ry that detects a drop in the liquid level of the liquid tank W in which the submersible pump type motor M is buried and supplies the power to the motor M. a protection circuit 8 including a liquid level detection relay wy that cuts off power supply to the generator 3; and an excitation current control circuit 4 that supplies an excitation current to the excitation circuit 7 of the generator 3 in response to the output voltage of the generator 3. , A starting device for a submersible pump motor, characterized in that a power supply section 12 for supplying power to the protection circuit 8 is attached.