JPH0348363U - - Google Patents
Info
- Publication number
- JPH0348363U JPH0348363U JP10936889U JP10936889U JPH0348363U JP H0348363 U JPH0348363 U JP H0348363U JP 10936889 U JP10936889 U JP 10936889U JP 10936889 U JP10936889 U JP 10936889U JP H0348363 U JPH0348363 U JP H0348363U
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- predetermined value
- comparator
- relay
- insulation resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009413 insulation Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図及び第２図はこの考案の一実施例を示し
、第１図は回転電機のコイルの絶縁抵抗値低下検
出回路を示す接続図、第２図はステータコイルエ
ンド部を示す断面側面図、第３図はコイル表面の
絶縁抵抗値が時間の低下につれて低下する状態を
示す図、第４図は従来のステータコイルエンド部
を示す断面側面図である。
１……ステータコイル、７，８……検出素子（
電極）、１１……電源、１３……回転電機、１６
……比較器、１７……設定器、１８……警報器、
１９……リレー、１９ａ……開閉器。なお、図中
、同一符号は同一または相当部分を示す。
Figures 1 and 2 show an embodiment of this invention, Figure 1 is a connection diagram showing a circuit for detecting a decrease in insulation resistance of a coil of a rotating electric machine, and Figure 2 is a cross-sectional side view showing a stator coil end. , FIG. 3 is a diagram showing how the insulation resistance value of the coil surface decreases over time, and FIG. 4 is a cross-sectional side view showing a conventional stator coil end portion. 1... Stator coil, 7, 8... Detection element (
electrode), 11...power supply, 13...rotating electric machine, 16
... Comparator, 17 ... Setting device, 18 ... Alarm device,
19... Relay, 19a... Switch. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
下を検出する検出素子、この検出素子で検出され
た絶縁抵抗値が第１の所定値以下に低下したとき
第１の出力信号を発し、上記第１の所定値より低
い第２の所定値以下に低下したとき第２の出力信
号を発する比較器、この比較器からの第１の出力
信号を受けて警報を出力する警報器、上記比較器
からの第２の出力信号を受けて動作するリレー、
このリレーの動作によつて電源から上記回転電機
への電力の供給を停止する開閉器を備えた回転電
機コイルの保護装置。 a detection element for detecting a decrease in insulation resistance value on the surface of a coil end of a rotating electrical machine; when the insulation resistance value detected by the detection element falls below a first predetermined value, a first output signal is emitted; a comparator that outputs a second output signal when the voltage drops below a second predetermined value, which is lower than a predetermined value of the comparator; a relay that operates in response to a second output signal;
A protection device for a rotating electric machine coil, which includes a switch that stops supplying power from a power source to the rotating electric machine through the operation of this relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936889U JPH0348363U (en) | 1989-09-19 | 1989-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936889U JPH0348363U (en) | 1989-09-19 | 1989-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0348363U true JPH0348363U (en) | 1991-05-09 |
Family
ID=31657967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10936889U Pending JPH0348363U (en) | 1989-09-19 | 1989-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0348363U (en) |
-
1989
- 1989-09-19 JP JP10936889U patent/JPH0348363U/ja active Pending
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