WO2022146261A1 - Short circuit detector for the inner coil windings on three-phase hermetic type transformers - Google Patents

Short circuit detector for the inner coil windings on three-phase hermetic type transformers Download PDF

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Publication number
WO2022146261A1
WO2022146261A1 PCT/TR2020/051483 TR2020051483W WO2022146261A1 WO 2022146261 A1 WO2022146261 A1 WO 2022146261A1 TR 2020051483 W TR2020051483 W TR 2020051483W WO 2022146261 A1 WO2022146261 A1 WO 2022146261A1
Authority
WO
WIPO (PCT)
Prior art keywords
characteristic
internal failure
mentioned
outer box
coil windings
Prior art date
Application number
PCT/TR2020/051483
Other languages
French (fr)
Inventor
Ali Osman KÖKSAL
Fatma AVLİ FIRIŞ
Original Assignee
Akedaş Elektrik Dağitim A. Ş.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Akedaş Elektrik Dağitim A. Ş. filed Critical Akedaş Elektrik Dağitim A. Ş.
Priority to PCT/TR2020/051483 priority Critical patent/WO2022146261A1/en
Publication of WO2022146261A1 publication Critical patent/WO2022146261A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/02—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid mechanically indicating or recording and involving loaded or return springs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62—Testing of transformers

Definitions

  • This invention is about the short circuit detector for the inner coil windings on three- phase hermetic type transformers which can determine the inner failures according to the pressure shifts occuring in three-phase hermetic pole type transformers used in electricity distribution companies.
  • Patent applications discussed above are mentioning about an internal failure detecting system for single -phase transformers.
  • This invention is placed inside a single -phase transformer and doesn’t include any communication setup. Therefore it requires physical observation on site for determining internal failures. Said invention can not provide a suitable, practical and functional solution to the current problem.
  • This invention is a shor circuit detector for inner coil windings on three-phase hermetic type transformers and its’ characteristic; is being a new technology that can overcome the disadvantages mentioned above, can determine the internal failures in three-phase hermetic transformers, communicates with the user, can be mounted outside the transformer, does not require any physical observation on site for determining internal failures, can provide data both during and before the failure, extend the lifetime of the transformer, reduces the labor and provides occupational safety.
  • the invention is a device developed to provide data on failures in hermetic pole type three-phase transformers used in electricity distribution companies.
  • Device subject to invention can determine the internal failures according to the pressure increase changes occuring in transformers.
  • the oil pressure inside the transformer rapidly increases. Due to this rapid pressure increase a spring indicator inside the device activates and shows that there’s an internal failure.
  • the invention in general can determine the internal failures occuring on transformer coils (short circuits) and informs the user with its’ communication features.
  • the invention has a communication feature it can quickly warn the user about the internal transformer failures, communicate the oil temperature and oil level and allows the field staff to get information on the reason of the problem before arriving to the transformer site. This way both the occupational health and safety and personnel productivity are improved.
  • the main goal to develop such an invention is to protect the field staff from the possible internal failures that occur on transformer coil windings. With the information coming from the device the field staff won’t give energy to the transformer and this allows for possible explosions and blasts to be prevented. In addition to this there’re also oil levels and temperature data of the transformer can be obtained with the optional features added to the device. These information allows for preventive services to be made before any failure occurs in the transformer. This way data can be obtained both during and before the failure and transformer lifetime and occupational safety are increased.
  • FIG. 1 Cross view of the invention.
  • FIG. 1 Perspective view of the invention.
  • FIG. 1 Perspective view of the communication contacts.
  • Figure 4 Perspective view of the internal failure indicator.
  • FIG. 1 Perspective view of the pressure discharge valve.
  • Figure 6 Perspective and side view of the outer box bottom.
  • Figure 7 Perspective and bottom view of the outer box bottom.
  • Figure 8 Perspective and side view of the outer box top.
  • Figure 9 Perspective and top view of the outer box top.
  • FIG. 10 Perspective, side and top view of the internal failure indicator.
  • FIG. 11 Perspective and side view of the pressure discharge valve.
  • FIG. 12 Perspective, side and top view of the valve lid.
  • Figure 13 Perspective and side view of the elastic diaphragm.
  • Figure 14 Perspective and side view of the diaphragm screw.
  • Figure 15 Perspective and top view of the diaphragm washer.
  • Figure 16 Perspective view of the springs.
  • the invention consists of the pressure discharge valve (1) that allows pressurized gas to be discharged due to the temperature rise in oil during the normal operation of the transformer, the internal failure indicator (2) associated with the pressure discharge valve (1) and come out in a pipe shape during an internal failure, the outer box (3) containing a chamber inside, the mounting pipe (4) that allows the system to be mounted on the transformer, the elastic diaphragm (5) inside the outer box (3) and associated with the internal failure indicator (2), the communication contacts, oil level and oil temperature contacts (6) that electrically unlink with each other by the triggering of the intenal failure indicator (2) and can change the communication signal, the lid (7) associated with the pressure discharge valve (1), the spring (8) inside the outer box (3) and moves with the elastic diaphragm (5).
  • the invention has the o-ring (1.1) located on the pressure discharge valve (1).
  • the pressure discharge valve (1) contains the valve spring (1.2) located on it and the valve lid (1.3) associated in a way to be in contact with the valve spring (1.2).
  • the device subject to invention has the hole (2.1), female screw (2.2) and the indicator spring (2.3) located on the internal failure indicator (2).
  • the internal failure indicator (2) can be optionally in red.
  • the invention has the male screw (7.1) located on the lid (7).
  • the invention has the elastic diaphragm (5) that allows the spring (8) to be pushed and the failure indicator to be triggered in case of an internal failure.
  • the device subject to invention has the female screw (2.2) and the male screw (7.1) that associate the internal failure indicator (2) with the lid (7).
  • the invention has the communication contacts, oil level and oil temperature contacts (6) that are incontact and send signal “1” to the communication system in normal state and signal “0” with the sytem activated in failure state and informs the user that there’s an internal failure in the concerned transformer.
  • the invention in pressure increases due to loads without an internal failure case, allows for the elastic diaphragm (5) to move and the pressurized gas to be released out of the transformer through the pressure discharge valve (1).
  • Elastic diaphragm (5) consists of the diaphragm washer (5.2) and the diaphragm screw (5.1) associated in a way to pass through the midpoint of the diaphragm washer (5.2).
  • the outer box (3) consists of the outer box bottom (9) and the outer box top (10).
  • the outer box top (10) has the spring seat (10.1) designed to fit the spring (8).
  • the material of the parts of the product subject to invention is polyamide. Thanks to this material, all the parts exposed to outer conditions are also resistant to UV rays.
  • Basic parts consisting the invention are; pressure discharge valve (1), internal failure indicator (2), outer box (3), mounting pipe (4), elastic diaphragm (5), communication contacts, oil level and oil temperature contacts (6) and spring (8).
  • the invention is a mechanical equipment in basic and all the parts within this equipment are connected with each other.
  • Mounting pipe (4) enables the mounting on transformer as well as pressure intake to the equipment which’ s utilized to determine the failure.
  • this gas comes to the pressure discharge valve (1) over internal failure indicator (2) and released out from there.
  • the pressure is high elastic diaphragm (5) moves upward and sets the internal failure indicator (2) free. This way the internal failure indicator (2) comes out and physically cuts the contact between communication contacts, oil level and oil temperatur contacts (6).
  • the pressure discharge valve (1) enables the pressurized gas to be released out according to the temperature rise of the oil during the normal operation of the transformer.
  • the internal failure indicator (2) shaped as a pipe, is triggered by the spring (8) inside a spring mechanism in a possible internal failure and comes out. This way the user is informed about the internal failure both visually and both by cutting the contacts between communication contacts, oil level and oil temperature contacts (6) linked to the communication system.
  • the outer box (3) provides a controlled space to allow the device and the elastic diaphragm work properly. There’s a chamber in it.
  • the mounting pipe (4) is the place where the device is mounted on transformer and pressure is passing through.
  • the elastic diaphragm (5) enables the spring (8) to be pushed and the failure indicator to be triggered in an internal failure case.
  • the invention has the lid (7) associated with the internal failure indicator (2). There’S a male screw (7.1) on the lid (7).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

This invention is about the short circuit detector for the inner coil windings on three- phase hermetic type transformers which can determine the inner failures according to the pressure shifts occuring in three-phase hermetic pole type transformers used in electricity distribution companies and its' characteristic is being consisted of the pressure discharge valve (1) that allows pressurized gas to be discharged due to the temperature rise in oil during the normal operation of the transformer, the internal failure indicator (2) associated with the pressure discharge valve (1) and come out in a pipe shape during an internal failure, the outer box (3) containing a chamber inside, the mounting pipe (4) that allows the system to be mounted on the transformer, the elastic diaphragm (5) inside the outer box (3) and associated with the internal failure indicator (2), the communication contacts, oil level and oil temperature contacts (6) that electrically unlink with each other by the triggering of the intenal failure indicator (2) and can change the communication signal, the lid (7) associated with the pressure discharge valve (1), the spring (8) inside the outer box (3) and moves with the elastic diaphragm (5).

Description

SHORT CIRCUIT DETECTOR FOR THE INNER COIL WINDINGS ON THREE-PHASE HERMETIC TYPE TRANSFORMERS
Technological Area:
This invention is about the short circuit detector for the inner coil windings on three- phase hermetic type transformers which can determine the inner failures according to the pressure shifts occuring in three-phase hermetic pole type transformers used in electricity distribution companies.
Current Situation of The Technique:
In current systems components such as transformers, capacitors and reactors are being used in power distribution networks. When aging and operating voltages causes insulation systems to breakdown potential hazards may occur in these equipments. A shor circuit in such an equipment can release great amounts of energy within and industrial zone. In worst case the equipment can explode due to rapid inner pressure buildup caused by vaporization of insulating oil and oil vapor decomposing into inflammable and volatile gases.
Without leaving an apparent proof there can be failures on transformers. If the service personnel is not able to tell whether there’s a failure or not they can give power without determining the failure and this, as stated above, can lead to devastating breakdowns on electrical devices.
In the patent application numbered US20030117145, “Internal failure indicator for single-phase pole type transformers” is explained. An internal failure indicator for transformers is triggered with a sudden pressure jump when there’s an insulation failure or electrical arc. Heat generated in the arc is transferred to the surrounding volume in a way to cause the insulation material to be locally overheat, vaporize and disintegrate. The occuring pressure wave moves a diapragm. The diaphragm motion releases a spring driven piston from a barrel along the electrical device’s casing. Piston is hold installed with a lock pin before activation. After triggerring piston is pushed by the spring until it sticks out from the rest in order to provide a visual signal of the internal failure.
Patent applications discussed above are mentioning about an internal failure detecting system for single -phase transformers. This invention is placed inside a single -phase transformer and doesn’t include any communication setup. Therefore it requires physical observation on site for determining internal failures. Said invention can not provide a suitable, practical and functional solution to the current problem.
As a result there’s a need for a new technology that can overcome the disadvantages mentioned above, can determine the internal failures in three-phase hermetic transformers, communicates with the user, can be mounted outside the transformer, does not require any physical observation on site for determining internal failures, can provide data both during and before the failure, extend the lifetime of the transformer, reduces the labor and provides occupational safety.
Invention Definition:
This invention is a shor circuit detector for inner coil windings on three-phase hermetic type transformers and its’ characteristic; is being a new technology that can overcome the disadvantages mentioned above, can determine the internal failures in three-phase hermetic transformers, communicates with the user, can be mounted outside the transformer, does not require any physical observation on site for determining internal failures, can provide data both during and before the failure, extend the lifetime of the transformer, reduces the labor and provides occupational safety.
In order to realize all purposes mentioned above and offered by the detailed description below the invention; is a device developed to provide data on failures in hermetic pole type three-phase transformers used in electricity distribution companies. Device subject to invention, can determine the internal failures according to the pressure increase changes occuring in transformers. In a possible internal failure the oil pressure inside the transformer rapidly increases. Due to this rapid pressure increase a spring indicator inside the device activates and shows that there’s an internal failure.
The invention in general can determine the internal failures occuring on transformer coils (short circuits) and informs the user with its’ communication features.
Because the invention has a communication feature it can quickly warn the user about the internal transformer failures, communicate the oil temperature and oil level and allows the field staff to get information on the reason of the problem before arriving to the transformer site. This way both the occupational health and safety and personnel productivity are improved.
The main goal to develop such an invention is to protect the field staff from the possible internal failures that occur on transformer coil windings. With the information coming from the device the field staff won’t give energy to the transformer and this allows for possible explosions and blasts to be prevented. In addition to this there’re also oil levels and temperature data of the transformer can be obtained with the optional features added to the device. These information allows for preventive services to be made before any failure occurs in the transformer. This way data can be obtained both during and before the failure and transformer lifetime and occupational safety are increased.
All the advantages of the method subject to invention will be understood more clearly with the help of the scheme given below and the detailed description written by referring to this scheme, for this reason assessment should be made considering this scheme and the detailed description.
Description of Figures:
The invention will be described by referring the figures enclosed, this way the characteristics of the invention will be understood and assessed more clearly, but this is not intended to limit the invention with this specific arrangements. Vice versa it’s intended to cover all alternatives, changes and equivalents which can be involved under the area the invention is defined in by the claims enclosed. It must be understood that the shown details are given only for the description of the preferred arrangements of the current invention and presented to provide the most utilisable and clear definition of both the formation of the methods and the rules and conceptual characteristics of the invention. In these figures;
Figure 1 Cross view of the invention.
Figure 2 Perspective view of the invention.
Figure 3 Perspective view of the communication contacts.
Figure 4 Perspective view of the internal failure indicator.
Figure 5 Perspective view of the pressure discharge valve.
Figure 6 Perspective and side view of the outer box bottom.
Figure 7 Perspective and bottom view of the outer box bottom.
Figure 8 Perspective and side view of the outer box top.
Figure 9 Perspective and top view of the outer box top.
Figure 10 Perspective, side and top view of the internal failure indicator.
Figure 11 Perspective and side view of the pressure discharge valve.
Figure 12 Perspective, side and top view of the valve lid.
Figure 13 Perspective and side view of the elastic diaphragm.
Figure 14 Perspective and side view of the diaphragm screw.
Figure 15 Perspective and top view of the diaphragm washer.
Figure 16 Perspective view of the springs.
The figures that will help out to understand this invention are numbered as specified in the enclosed figure and they’re given below by their names.
Description of References:
1. Pressure discharge valve
1.1 O-ring
1.2 Valve Spring 1.3 Valve Lid
2. Internal failure indicator
2.1 Hole
2.2 Female Screw
2.3 Indicator Spring
3. Outer box
4. Mounting pipe
5. Elastic diaphragm
5.1 Diaphragm S crew
5.2 Diaphragm W asher
6. Communication contacts
7. Lid
7.1 Male Screw
8. Spring
9. Outer Box Bottom
10. Outer Box Top
10.1 Spring Seat
Description of Invention:
The invention consists of the pressure discharge valve (1) that allows pressurized gas to be discharged due to the temperature rise in oil during the normal operation of the transformer, the internal failure indicator (2) associated with the pressure discharge valve (1) and come out in a pipe shape during an internal failure, the outer box (3) containing a chamber inside, the mounting pipe (4) that allows the system to be mounted on the transformer, the elastic diaphragm (5) inside the outer box (3) and associated with the internal failure indicator (2), the communication contacts, oil level and oil temperature contacts (6) that electrically unlink with each other by the triggering of the intenal failure indicator (2) and can change the communication signal, the lid (7) associated with the pressure discharge valve (1), the spring (8) inside the outer box (3) and moves with the elastic diaphragm (5). The invention has the o-ring (1.1) located on the pressure discharge valve (1). The pressure discharge valve (1) contains the valve spring (1.2) located on it and the valve lid (1.3) associated in a way to be in contact with the valve spring (1.2).
The device subject to invention has the hole (2.1), female screw (2.2) and the indicator spring (2.3) located on the internal failure indicator (2). The internal failure indicator (2) can be optionally in red. The invention has the male screw (7.1) located on the lid (7). The invention has the elastic diaphragm (5) that allows the spring (8) to be pushed and the failure indicator to be triggered in case of an internal failure.
When an internal failure occurs on transformer coil windings the invention, with the pressure going through the mounting pipe (4), allows for the elastic diaphragm (5) inside the outer box (3) and the spring (8) to move successively and the internal failure indicator (2) to be pushed out.
The device subject to invention has the female screw (2.2) and the male screw (7.1) that associate the internal failure indicator (2) with the lid (7). The invention has the communication contacts, oil level and oil temperature contacts (6) that are incontact and send signal “1” to the communication system in normal state and signal “0” with the sytem activated in failure state and informs the user that there’s an internal failure in the concerned transformer.
The invention, in pressure increases due to loads without an internal failure case, allows for the elastic diaphragm (5) to move and the pressurized gas to be released out of the transformer through the pressure discharge valve (1).
Elastic diaphragm (5) consists of the diaphragm washer (5.2) and the diaphragm screw (5.1) associated in a way to pass through the midpoint of the diaphragm washer (5.2).
The outer box (3) consists of the outer box bottom (9) and the outer box top (10). The outer box top (10) has the spring seat (10.1) designed to fit the spring (8). The material of the parts of the product subject to invention is polyamide. Thanks to this material, all the parts exposed to outer conditions are also resistant to UV rays.
Detailed Description of the Invention:
Basic parts consisting the invention are; pressure discharge valve (1), internal failure indicator (2), outer box (3), mounting pipe (4), elastic diaphragm (5), communication contacts, oil level and oil temperature contacts (6) and spring (8).
The invention is a mechanical equipment in basic and all the parts within this equipment are connected with each other. Mounting pipe (4) enables the mounting on transformer as well as pressure intake to the equipment which’ s utilized to determine the failure. When the pressure is low this gas comes to the pressure discharge valve (1) over internal failure indicator (2) and released out from there. When the pressure is high elastic diaphragm (5) moves upward and sets the internal failure indicator (2) free. This way the internal failure indicator (2) comes out and physically cuts the contact between communication contacts, oil level and oil temperatur contacts (6).
When the transformers are in breakdown by an internal arc it’s known that there happens a temporary surge pressure inside electrical devices filled with oil such as transformers. The reason for this is a significant temperature rise caused by the arc and which vaporizes an amount of the oil. The system can detect the internal failures due to the pressure increase changes occuring in the transformer. In a possible internal failure the oil pressure inside the transformer rapidly increases. Due to this rapid pressure increase a spring indicator in the device activates and indicates the internal failure.
The pressure discharge valve (1) enables the pressurized gas to be released out according to the temperature rise of the oil during the normal operation of the transformer. There are an o-ring (1.1) and a valve spring (1.2) located on the pressure dicharge valve (1). The internal failure indicator (2), shaped as a pipe, is triggered by the spring (8) inside a spring mechanism in a possible internal failure and comes out. This way the user is informed about the internal failure both visually and both by cutting the contacts between communication contacts, oil level and oil temperature contacts (6) linked to the communication system. There’s a hole (2.1) located on the internal failure indicator (2).
The outer box (3) provides a controlled space to allow the device and the elastic diaphragm work properly. There’s a chamber in it.
The mounting pipe (4) is the place where the device is mounted on transformer and pressure is passing through. The elastic diaphragm (5) enables the spring (8) to be pushed and the failure indicator to be triggered in an internal failure case.
With the internal failure indicator (2) being triggered, communication contacts, oil level and oil temperature contacts (6) cut connection with each other and change the communication signal.
The invention has the lid (7) associated with the internal failure indicator (2). There’S a male screw (7.1) on the lid (7).
When there’s an internal failure occured on transformer coil windings the pressure passing through the mounting pipe (4) makes the elastic diaphragm (5) to move. With this moving part the spring (8) inside the outer box (3) is moved and makes the internal failure indicator (2) to be pushed out. This way both the red indicator is shown up and the communication contacts, oil level and oil temperature contacts (6) lost contact with each other. These communication contacts, oil level and oil temperature contacts (6) send value “1” to the communication system as they’ll be in contact in normal state but with the system activated they send value “0” and inform the user that there’s an internal failure in the concerned transformer. In pressure increases caused by loads without an internal failure case, the elastic diaphragm (5) won’t move and the pressurized gas is released out of the transformer over the discharge valve (1). Thanks to the pressure discharge valve (PDV) within the invention, there’S no need for an external hole on the transformer to be mounted on. For this reason it can easily be mounted on current transformer designs whwre there’s an installed PDV.

Claims

1- This invention is about the short circuit detector for the inner coil windings on three- phase hermetic type transformers and its’ characteristic is being consisted of; the pressure discharge valve (1) that allows pressurized gas to be discharged due to the temperature rise in oil during the normal operation of the transformer, the internal failure indicator (2) associated with the pressure discharge valve (1) and come out in a pipe shape during an internal failure, the outer box (3) containing a chamber inside, the mounting pipe (4) that allows the system to be mounted on the transformer, the elastic diaphragm (5) inside the outer box (3) and associated with the internal failure indicator (2), the communication contacts, oil level and oil temperature contacts (6) that electrically unlink with each other by the triggering of the intenal failure indicator (2) and can change the communication signal, the lid (7) associated with the pressure discharge valve (1), the spring (8) inside the outer box (3) and moves with the elastic diaphragm (5).
2- What’s mentioned in Claim 1 is about the pressure discharge valve (1) and its’ characteristic is; having the o-ring (1.1), the valve spring (1.2) located on it and the valve lid (1.3) associated in a way to be in contact with the valve spring (1.2)..
3- What’s mentioned in Claim 1 is about the internal failure indicator (2) and its’ characteristic is; having the hole (2.1), female screw (2.2) located on it and the indicator spring (2.3).
4- What’s mentioned in Claim 1 is about the lid (7) and its’ characteristic is; having the male screw (7.1) located on it.
5- What’s mentioned in Claim 1 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; including the elastic diaphragm (5) that allows the spring (8) to be pushed and the failure indicator to be triggered in case of an internal failure.
6- What’s mentioned in Claim 1 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; when an internal failure occurs on transformer coil windings, with the pressure going through the mounting pipe (4), allowing for the elastic diaphragm (5) inside the outer box (3) and the spring (8) to move successively and the internal failure indicator (2) to be pushed out.
7- What’s mentioned in Claim 1 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; having the female screw (2.2) and the male screw (7.1) that associate the internal failure indicator (2) with the lid (7).
8- What’s mentioned in Claim 1 is about the communication contacts, oil level and oil temperature contacts (6) and its’ characteristic is; including the communication contacts, oil level and oil temperature contacts (6) that are in contact and send signal “1” to the communication system in normal state and signal “0” with the sytem activated in failure state and informs the user that there’s an internal failure in the concerned transformer.
9- What’s mentioned in Claim 1 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; in pressure increases due to loads without an internal failure case, allowing for the elastic diaphragm (5) to move and the pressurized gas to be released out of the transformer through the pressure discharge valve (1).
10- What’s mentioned in Claim 1 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; having the mounting pipe (4) that enables the pressure intake to the equipment which’ s utilized to determine the failure. 11- What’s mentioned in Claim 1 and complies with Claim 10 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; when the pressure is low the gas coming to the pressure discharge valve (1) over internal failure indicator (2) and being released out from there.
12- What’s mentioned in Claim 1 and complies with Claim 10 or Claim 11 is about the short circuit detector for the inner coil windings on three-phase hermetic type transformers and its’ characteristic is; when the pressure is high elastic diaphragm (5) moving upward and setting the internal failure indicator (2) free and this way the internal failure indicator (2) coming out and physically cutting the contact between communication contacts, oil level and oil temperatur contacts (6).
13- What’s mentioned in Claim 1 is about the elastic diaphragm (5) and its’ characteristic is; being consisted of the diaphragm washer (5.2) and the diaphragm screw (5.1) associated in a way to pass through the midpoint of the diaphragm washer (5.2)
14- What’s mentioned in Claim 1 is about the outer box (3) and its’ characteristic is; being consisted of the outer box bottom (9) and the outer box top (10).
15- What’s mentioned in Claim 1 is about the outer box top (10) and its’ characteristic is; containing the the spring seat (10.1) designed to fit the spring (8).
PCT/TR2020/051483 2020-12-31 2020-12-31 Short circuit detector for the inner coil windings on three-phase hermetic type transformers WO2022146261A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/TR2020/051483 WO2022146261A1 (en) 2020-12-31 2020-12-31 Short circuit detector for the inner coil windings on three-phase hermetic type transformers

Applications Claiming Priority (1)

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PCT/TR2020/051483 WO2022146261A1 (en) 2020-12-31 2020-12-31 Short circuit detector for the inner coil windings on three-phase hermetic type transformers

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016134458A1 (en) * 2015-02-23 2016-09-01 Ifd Internal Fault Detector Corp. Integrated fault monitoring apparatus for electrical equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016134458A1 (en) * 2015-02-23 2016-09-01 Ifd Internal Fault Detector Corp. Integrated fault monitoring apparatus for electrical equipment

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