CN104752103A - Primary over-current relay and relay protection method thereof - Google Patents
Primary over-current relay and relay protection method thereof Download PDFInfo
- Publication number
- CN104752103A CN104752103A CN201310735015.8A CN201310735015A CN104752103A CN 104752103 A CN104752103 A CN 104752103A CN 201310735015 A CN201310735015 A CN 201310735015A CN 104752103 A CN104752103 A CN 104752103A
- Authority
- CN
- China
- Prior art keywords
- armature
- relay
- yoke
- iron core
- over
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
Provided is a primary over-current relay and a relay protection method thereof. When the current of a line exceeds the setting value of the over-current relay, a normally-closed contact of the over-current relay is opened, and a normally-open contact is closed to cut off a contactor loop or emit an alarm signal. A present over-current relay is inaccurate in protection, and tends to cause fault of equipment. The over-current relay comprises a magnet yoke (1), the magnet yoke is connected with an armature (3) and an attraction coil (8), the attraction coil is mounted on an iron core (7), the iron core is connected with a nonmagnetic pad, the nonmagnetic pad is connected with a pole shoe (5), and the armature is connected with a contact group (6) and a reaction spring (2). The over-current relay and the method are used for relay protection.
Description
technical field:
the present invention relates to a kind of former limit overcurrent relay and relay protecting method.
background technology:
overcurrent relay is when the electric current of circuit exceedes the setting value of overcurrent relay, and the normally closed contact of overcurrent relay can be opened, and normal opened contact can close, thus cuts off contactor loop or send alarm signal.
the protection of the overcurrent relay of current use is not accurate, easily causes equipment fault.
summary of the invention:
the object of this invention is to provide a kind of former limit overcurrent relay and relay protecting method.
above-mentioned object is realized by following technical scheme:
a kind of former limit overcurrent relay, its composition comprises: yoke, described yoke is connected with armature, sucking coil respectively, described sucking coil is arranged on iron core, described iron core is connected with non magnetic pad, described non magnetic pad is connected with pole shoe, and described armature is connected with sets of contacts, reaction spring respectively.
described former limit overcurrent relay, described yoke is gusset shape, and described armature is plate shaped.
the over-current protection method of the former limit overcurrent relay described in utilization, the method comprises the steps: that armature around the corner angle fulcrum of yoke, can form clapper-type action; Reaction spring is equipped with in the lower left of yoke corner angle, and during relay electric-loss, armature can be opened by means of the counter-force of reaction spring; Be provided with sets of contacts on the right side of electromagnetic system, contact supporting is connected with armature support, during armature movement, moving contact rack can be with to do corresponding action, make locking contact opening and closing; The armature of iron core end is equipped with non magnetic pad, continues in order to prevent remanent magnetism attract armature and occur not release phenomenon.
beneficial effect:
the present invention changes the thickness of non magnetic pad, can the dropping current strength of regulating relay; Change the pressure of reaction spring, can the setting value of regulating relay operating current.
the present invention it be connected on the secondary of high-voltage AC transformer, make traction transformer former limit overcurrent protection.Its rated current is 5A, and operating current setting value is 10A(± 10%).
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is vertical views of accompanying drawing 1.
embodiment:
embodiment 1:
a kind of former limit overcurrent relay, its composition comprises: yoke 1, described yoke is connected with armature 3, sucking coil 8 respectively, described sucking coil is arranged on unshakable in one's determination 7, described iron core is connected with non magnetic pad, described non magnetic pad is connected with pole shoe 5, and described armature is connected with sets of contacts 6, reaction spring 2 respectively.
embodiment 2:
former limit overcurrent relay according to embodiment 2, described yoke is gusset shape, and described armature is plate shaped.
embodiment 3:
utilize an over-current protection method for described former limit overcurrent relay, the method comprises the steps: that armature around the corner angle fulcrum of yoke, can form clapper-type action; Reaction spring is equipped with in the lower left of yoke corner angle, and during relay electric-loss, armature can be opened by means of the counter-force of reaction spring; Be provided with sets of contacts on the right side of electromagnetic system, contact supporting is connected with armature support, during armature movement, moving contact rack can be with to do corresponding action, make locking contact opening and closing; The armature of iron core end is equipped with non magnetic pad, continues in order to prevent remanent magnetism attract armature and occur not release phenomenon.
Claims (3)
1. a former limit overcurrent relay, its composition comprises: yoke, it is characterized in that: described yoke is connected with armature, sucking coil respectively, described sucking coil is arranged on iron core, described iron core is connected with non magnetic pad, described non magnetic pad is connected with pole shoe, and described armature is connected with sets of contacts, reaction spring respectively.
2. former limit according to claim 1 overcurrent relay, it is characterized in that: described yoke is gusset shape, described armature is plate shaped.
3. a relay protecting method for former limit as claimed in claim 1 overcurrent relay, is characterized in that: the method comprises the steps: that armature around the corner angle fulcrum of yoke, can form clapper-type action; Reaction spring is equipped with in the lower left of yoke corner angle, and during relay electric-loss, armature can be opened by means of the counter-force of reaction spring; Be provided with sets of contacts on the right side of electromagnetic system, contact supporting is connected with armature support, and during armature movement, band moving contact rack does corresponding action, makes locking contact opening and closing; The armature of iron core end is equipped with non magnetic pad, continues in order to prevent remanent magnetism attract armature and occur not release phenomenon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310735015.8A CN104752103A (en) | 2013-12-27 | 2013-12-27 | Primary over-current relay and relay protection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310735015.8A CN104752103A (en) | 2013-12-27 | 2013-12-27 | Primary over-current relay and relay protection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104752103A true CN104752103A (en) | 2015-07-01 |
Family
ID=53591631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310735015.8A Withdrawn CN104752103A (en) | 2013-12-27 | 2013-12-27 | Primary over-current relay and relay protection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104752103A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374631A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Electromagnetic relay |
| CN110739184A (en) * | 2019-09-09 | 2020-01-31 | 成都阿尔刚雷绝缘连电插座制造有限公司 | kinds of relay with quick response |
-
2013
- 2013-12-27 CN CN201310735015.8A patent/CN104752103A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374631A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Electromagnetic relay |
| CN110739184A (en) * | 2019-09-09 | 2020-01-31 | 成都阿尔刚雷绝缘连电插座制造有限公司 | kinds of relay with quick response |
| CN110739184B (en) * | 2019-09-09 | 2022-04-15 | 成都阿尔刚雷绝缘连电插座制造有限公司 | Quick response relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150701 |