JPS6485521A - Open-phase breaker - Google Patents
Open-phase breakerInfo
- Publication number
- JPS6485521A JPS6485521A JP24206687A JP24206687A JPS6485521A JP S6485521 A JPS6485521 A JP S6485521A JP 24206687 A JP24206687 A JP 24206687A JP 24206687 A JP24206687 A JP 24206687A JP S6485521 A JPS6485521 A JP S6485521A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- open
- line
- voltage
- detecting means
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE:To prevent the danger of electric shock from being generated, by inserting a normally-closed auxiliary contact into the detection line of N-phase, and by applying partial voltage to the detection input terminal of an open-phase detecting means. CONSTITUTION:As an open-phase breaker A, by the abnormal voltage of a single-phase three-line system power line, open-phase is detected, and by the open-phase, the switch means of a thyristor SCR is turned ON, and the trip coil L of a main contact S1 is excited, and the main contact S1 is released. Into the breaker A, the normally closed side contact (a) of an auxiliary contact S2 driven interlocked with the main contact S1 by the detection line lN of N- phase is inserted, and to the detection input terminal of an open-phase detecting means, voltage R1, R2 divided between A-phase and B-phase is applied. The open-phase detecting means is IC-formed, and is composed of a comparator CP1, a waveform shaping circuit WS, and a delay circuit TD. Then, counter- connection can be performed, and even if the detection line lN of the N-phase is used in a state that the line lN is put out of place, voltage to ground at the tip charged section can be set to be almost 0V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24206687A JPH07108054B2 (en) | 1987-09-26 | 1987-09-26 | Phase breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24206687A JPH07108054B2 (en) | 1987-09-26 | 1987-09-26 | Phase breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6485521A true JPS6485521A (en) | 1989-03-30 |
| JPH07108054B2 JPH07108054B2 (en) | 1995-11-15 |
Family
ID=17083772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24206687A Expired - Lifetime JPH07108054B2 (en) | 1987-09-26 | 1987-09-26 | Phase breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07108054B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7722257B2 (en) | 2006-03-30 | 2010-05-25 | Jtekt Corporation | Roller bearing cage and tapered roller bearing |
| US8177437B2 (en) | 2005-12-21 | 2012-05-15 | Ntn Corporation | Rolling bearing, retainer segment and main shaft support structure of wind-power generator |
| KR20210093932A (en) | 2018-12-07 | 2021-07-28 | 엔티엔 가부시키가이샤 | tapered roller bearings |
-
1987
- 1987-09-26 JP JP24206687A patent/JPH07108054B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8177437B2 (en) | 2005-12-21 | 2012-05-15 | Ntn Corporation | Rolling bearing, retainer segment and main shaft support structure of wind-power generator |
| US7722257B2 (en) | 2006-03-30 | 2010-05-25 | Jtekt Corporation | Roller bearing cage and tapered roller bearing |
| KR20210093932A (en) | 2018-12-07 | 2021-07-28 | 엔티엔 가부시키가이샤 | tapered roller bearings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07108054B2 (en) | 1995-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |