CN202333807U - Leakage protective device for adjusting transformer three-phase unbalanced load - Google Patents
Leakage protective device for adjusting transformer three-phase unbalanced load Download PDFInfo
- Publication number
- CN202333807U CN202333807U CN2011205187872U CN201120518787U CN202333807U CN 202333807 U CN202333807 U CN 202333807U CN 2011205187872 U CN2011205187872 U CN 2011205187872U CN 201120518787 U CN201120518787 U CN 201120518787U CN 202333807 U CN202333807 U CN 202333807U
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- CN
- China
- Prior art keywords
- phase
- leakage protective
- protective device
- magnetic switch
- rotary switch
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a leakage protective device for adjusting transformer three-phase unbalanced load. The leakage protective device comprises a protector body, a switching circuit, a rotary switch, a magnetic switch control circuit and a magnetic switch, wherein the protector body is used for detecting phase current and is connected with the switching circuit, and the switching circuit is connected with the rotary switch; and the switching circuit is used for controlling the switchover of the rotary switch, the protector body is also connected with the magnetic switch control circuit, and a magnetic switch control module is connected with the magnetic switch. The leakage protective device provided by the utility model has functions of general leakage protective devices, and also can control the rotary switch through the switching circuit to switch the phase sequence of a power source connected to the users; and when electric current of one phase is overlarge, the rotary switch switches the user load to the phase, thereby decreasing the current of the phase, ensuring branch line three-phase load equalization, and effectively improving line tail end client voltage.
Description
Technical field
The utility model relates to a kind of earth leakage protective device, relates in particular to a kind of intelligentized earth leakage protective device.
Background technology
In China's urban and rural power grids, adopt the three-phase four-wire system distribution system in a large number.Owing to there being reasons such as a lot of single-phase loads, electricity consumption asynchronism, the three-phase load imbalance on the power distribution network always exists.Transformer is when the three-phase load unbalanced operation, because the Transformer Winding pressure drop is different, outlet voltage is unbalanced, and user side voltage three phase deviations especially is bigger, and quality of voltage can not get ensureing.
The utility model content
The purpose of the utility model provides a kind of unbalanced earth leakage protective device of three-phase load of in electric process, adjusting; This device can also be realized a balance of specific electric load through adjustment user's electricity consumption phase place except the function that general earth leakage protective device is arranged.
The technical scheme of the utility model: the unbalanced earth leakage protective device of a kind of adjustment distribution transforming three-phase load; Comprise protector body, change-over circuit, rotary switch, magnetic switch control circuit and magnetic switch; Said protector body is used to detect phase current and connects change-over circuit, and change-over circuit connects rotary switch, and change-over circuit is used to control the switching of rotary switch; The protector body also connects the magnetic switch control circuit, and the magnetic switch control module connects magnetic switch.
The earth leakage protective device that the utility model provided is except the function that general earth leakage protective device is arranged; Can also control rotary switch through change-over circuit and switch power phase that the user connects; When the electric current of which phase was excessive, rotary switch just switched to this with user load and goes up mutually, thereby reduced the electric current that this goes up mutually; Make the branch line three-phrase burden balance, effectively improve line end client voltage.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model.
Embodiment
Shown in accompanying drawing 1; The unbalanced earth leakage protective device of a kind of adjustment distribution transforming three-phase load comprises protector body, change-over circuit, rotary switch, magnetic switch control circuit and magnetic switch, and said protector body is used to detect phase current and connects change-over circuit; Change-over circuit connects rotary switch; Change-over circuit is used to control the switching of rotary switch, and the protector body also connects the magnetic switch control circuit, and the magnetic switch control module connects magnetic switch.
The earth leakage protective device that the utility model provided has the function of general earth leakage protective device; Be that the protector body has detected leakage current generating; Just seeing electric brake off orders to the magnetic switch control circuit; The signal controlling magnetic switch of magnetic switch control circuit output is accomplished and is threaded off, and plays the effect of protection.
Simultaneously on the protector body, connect change-over circuit, change-over circuit connects rotary switch, and change-over circuit is used to control the switching of rotary switch; Rotary switch connects the power transformer of three-phase and four-line, and when the protector body detects electric current that which goes up mutually when excessive, control transformation circuit driven rotary switch switches power phase that the user connects; When the electric current of which phase is excessive; Rotary switch just switches to this with user load and goes up mutually, thereby reduces the electric current that this goes up mutually, makes the branch line three-phrase burden balance; Effectively improve line end client's voltage and line powering ability, reduced line loss.
Claims (1)
1. adjust the unbalanced earth leakage protective device of distribution transforming three-phase load for one kind; It is characterized in that comprise protector body, change-over circuit, rotary switch, magnetic switch control circuit and magnetic switch, said protector body is used to detect phase current and connects change-over circuit; Change-over circuit connects rotary switch; Change-over circuit is used to control the switching of rotary switch, and the protector body also connects the magnetic switch control circuit, and the magnetic switch control module connects magnetic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205187872U CN202333807U (en) | 2011-12-13 | 2011-12-13 | Leakage protective device for adjusting transformer three-phase unbalanced load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205187872U CN202333807U (en) | 2011-12-13 | 2011-12-13 | Leakage protective device for adjusting transformer three-phase unbalanced load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333807U true CN202333807U (en) | 2012-07-11 |
Family
ID=46445773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205187872U Expired - Lifetime CN202333807U (en) | 2011-12-13 | 2011-12-13 | Leakage protective device for adjusting transformer three-phase unbalanced load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656010A (en) * | 2013-11-15 | 2015-05-27 | 西门子公司 | Current leakage protection device detection system and detection method thereof |
-
2011
- 2011-12-13 CN CN2011205187872U patent/CN202333807U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656010A (en) * | 2013-11-15 | 2015-05-27 | 西门子公司 | Current leakage protection device detection system and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |