Cover configuration that secures electrical presence control in metal-enclosed modular switchgears

Abstract

The invention relates to a cover (1) developed to perform electrical checks in metal-enclosed modular cells (2) in a fast, secure and practical manner. The cover (1) includes a transparent window (11) to allow the phases to be seen from the outside, a high voltage detector cover lever (12) that allows the cover to be opened and closed easily and safely, a retractable high voltage detector cover (14) through which the high voltage detector can enter, a high voltage detector cover lock (13) that ensures the high voltage detector cover remains locked and can only be opened under specific conditions (breaker open, disconnector open, earthing switch closed), and a connection control mechanism that controls the breaker, disconnector and earthing switch connections of the high voltage detector cover (13).

Description

[0001] DESCRIPTION

[0002] COVER CONFIGURATION THAT SECURES ELECTRICAL PRESENCE CONTROL IN METAL-ENCLOSED MODULAR SWITCHGEARS

[0003] TECHNICAL FIELD

[0004] The invention relates to a cover configuration having a transparent inspection window that enables secure checking of the electrical presence in metal-enclosed modular switchgears by using an external high voltage detector for a second check and that operates synchronously with the disconnector.

[0005] PRIOR ART

[0006] When checking the presence of electricity in metal-enclosed modular switchgears used in the technical field, the phase indicators are first checked. If there is no warning in the phase indicators, the cover of the metal-enclosed modular switchgear is removed and a second check is made with the high voltage detector (phasing stick). The second check is made against the possibility of the phase indicators being defective, as this is a frequently encountered problem.

[0007] The disadvantage of the metal-enclosed modular switchgears in the state of the art is that the switchgear's cover is removed during the energy control process, and thus the inspector is directly confronted with the phase conductor and the breaker-disconnector. The absence of an obstacle between the inspector and the phase conductor and the breaker-disconnector poses a serious risk in terms of occupational safety. The inspector may encounter incidents such as an arc that may occur during this time or the breaker exploding as a result of the arc, leaving the employee vulnerable to occupational accidents and under serious danger.

[0008] In the state of the art, there are documents regarding the configurations that enable the safe checking of the presence of electricity in metal-enclosed modular switchgears.

[0009] An example of the state of the art is the patent document no. JP2007274861A. The document in question is about a metal-enclosed switchgear developed to enable maintenance and inspection operations of the main circuit in the metal-enclosed switchgear to be carried out from the front of the switchgear. The window section has an inspection door. The inspection door can only be opened when the circuit breakers are disconnected from the disconnector units (when there is no electrical flow to the main circuit). This is done by inserting the lock plugs into the sockets on the inspection door. The lock plug is activated when the circuit breaker is disconnected and allows the inspection door to be opened. In summary, the lock plug validates that the circuit breaker is safely disabled and de-energized when the plug is inserted into the plugging slot. The plugging slot also allows the inspection window to be opened and maintenance operations to be initiated. When the plug is inserted, the inspection window opens and the user can safely perform the insulation resistance measurement or other maintenance of the main circuit.

[0010] Another example of the state of the art is the utility model document no. CN203690788U. The present invention relates to an armored portable type AC metal-enclosed switching cabinet. The inspection windows mentioned in the document are used to increase the security and ease of use of the armored portable type AC metal-enclosed switching cabinet. The first inspection window on the middle door is used to inspect the operating condition of the circuit breaker. Operators can easily observe whether the circuit breaker is open or closed through this window. The second inspection window on the lower door is located to inspecting the opening and closing condition of the grounding knife. This window is used to check whether the grounding knife is safely engaged. The transparent sheet allows a clearer inspection of the condition of the grounding knife. Thanks to these windows, the operating status of critical elements inside the cabinet can be monitored from a safe distance, thus increasing the safety of personnel during maintenance and operation.

[0011] Another example of the state of the art is the patent document no. TR 2018 / 09241. It is related to a breaker compartment door that prevents the breaker compartment door from opening and displacing easily in unwanted situations in case of internal arcing in the breaker compartment in metal-enclosed metal-compartmented cubicles, thus preventing injuries to people working in front of the switchgear. The purpose of this document is to prevent occupational accidents by preventing switchgear doors from being easily opened and removed in unwanted situations.

[0012] The abovementioned documents cannot ensure that a typical metal-enclosed modular switchgear, which is frequently used in the technical field, can be checked for a second time externally and with the help of a detector. Therefore, an additional cover configuration with a transparent observation window has been developed that allows the presence of electricity in metal-enclosed modular switchgears to be safely inspected for a second time from outside using a high voltage detector, without removing the main front cover of the switchgear.

[0013] DETAILED DESCRIPTION OF THE INVENTION

[0014] The invention relates to an additional cover (1) configuration having a transparent observation window that enables the secure checking of the electrical presence in the metal-enclosed modular switchgears externally by using a high voltage detector as a second check and operating in synchronization with the disconnector.

[0015] One purpose of the invention is to provide a cover (1) configuration with appropriate dimensions, into which a high voltage detector can fit, in order to check the presence of electricity in metal- enclosed modular switchgears with the help of an external detector. Occupational safety is increased with this configuration.

[0016] Another purpose of the invention is to provide a cover that works synchronously with the breaker mechanism, thanks to the connection control mechanism of the cover (1), which allows the presence of electricity to be checked externally in metal-enclosed modular switchgears.

[0017] The invention is a cover (1) configuration in order to safely control the presence of electricity in metal-enclosed modular switchgears (2) with a high voltage detector, and in the most general form comprises of the following:

[0018] • an inside transparent observation window (11) on the front face of the switchgear which corresponds to the part where the phases are located,

[0019] • a high-voltage detector cover lever (12) that allows the cover to be opened and closed comfortably and securely,

[0020] • a retractable high voltage detector cover (14) through which the high voltage detector can enter, • a high-voltage detector cover lock (13), which ensures that the high-voltage detector cover remains locked and can only be opened by fulfilling various conditions (breaker open, disconnector open, earthing disconnector closed),

[0021] • a connection control mechanism that controls the connections between the disconnector, earthing disconnector, breaker, high-voltage detector cover lock (13).

[0022] In one configuration of the invention, the high-voltage detector cover (14) is sealed to prevent unwanted dust from entering the switchgear.

[0023] In one configuration of the invention, the connection control mechanism prevents the disconnector from being closed if the earthing disconnector and the breaker are not open and the opening cover of the switchgear is not closed.

[0024] In one configuration of the invention, the high-voltage detector cover (14) shown in Figure-3 has a width of 180-240 mm and a length of 150-200 mm, preferably with a width of 180 mm and a length of 150 mm.

[0025] An advantage of the invention is that the energy checks can be performed without the need to open the main cover of the metal-enclosed modular switchgear (2). Since the cover of the modular switchgear does not need to be removed and reattached during the process, time is saved and process safety is increased since the main cover remains in place during the measurement.

[0026] DESCRIPTIONS OF FIGURES

[0027] Figure-1: Front view of a metal-enclosed modular switchgear with a width of 1000 mm.

[0028] Figure-2: Side view of the metal-enclosed modular switchgear with a length of 2250 mm and a depth of 1400 mm.

[0029] Figure-3: Cover configuration that secures the control of electricity presence in the metal-enclosed modular switchgear. DESCRIPTIONS OF REFERENCE NUMBERS IN THE FIGURES

[0030] 1. Cover configuration that secures the control of electricity presence in the metal-enclosed switchgear 11. Switchgear inspection window

[0031] 12. High-voltage detector cover lever

[0032] 13. High-voltage detector cover lock

[0033] 14. High-voltage detector cover

[0034] 2. Metal-enclosed modular switchgear

Claims

CLAIMS1. A cover configuration (1) that secures checking of electricity presence in the metal-enclosed modular switchgear (2) with following properties;• a transparent inspection window (11) on the front face of the switchgear which corresponds to the part where the phases are located,• a high voltage detector cover lever (12) that allows the cover to be opened and closed in a comfortable and secure manner,• a retractable high voltage detector cover (14) through which the high voltage detector can enter,• a high voltage detector cover lock (13) which prevents the high voltage detector cover from being opened accidentally,• a connection control mechanism that controls the connections between the disconnector, earthing disconnector, breaker, high-voltage detector cover.

2. It is a modular switchgear cover according to Claim 1, characterized in that the high voltage detector cover (14) is sealed.

3. A modular switchgear cover according to Claim 1, characterized in that it contains a connection control mechanism that prevents the high voltage detector cover lock (13) from being opened unless the breaker and disconnector are open and the earthing switch is closed.

4. A modular switchgear cover according to claim 1, characterized in that the high voltage detector cover has a width in the range of 180-240 mm and a length in the range of 150-200 mm.