Within KYN28A-24 type indoor metal armored away switchgear
The main purpose
KYN-24 within the mouth indoor metal armored away switchgear (hereinafter referred to as switching equipment) system 20-24kv three-phase AC 50Hz single bus breaking Power distribution equipment systems, mainly for small and medium sized power plant generator power transmission, power receiving secondary substation of industrial and mining enterprises and utilities distribution power system, power transmission and large high-voltage motor starting, etc., the implementation of control and protection, detection purposes. The switch cabinet meet IEc62271-200, GB3906, DL, T404: 1997 and other standards, preventing the load with push-pull circuit breaker to prevent accidental division circuit breaker to prevent the grounding switch closing the circuit breaker when staying at a closed position, preventing people mistakenly charged compartment to prevent when charged closing earthing switch interlock function. Equipped with my company's port -24 ZN vacuum circuit breaker, the maximum rated current up to 2500A. Maximum rated current up to closing 31.5kA, it has a type test report and in line with IEc62271-100 IEc62271-200 standards.
1.Altitude: not more than 1000 m;
2.Ambient temperature: up to + 40 ℃, lower limit of -10 ℃;
3.Relative humidity: small mouth mean greater than 95%, on average less than 90%;
4.Installation place: small seismic intensity of more than 8 degrees;
5.Environmental conditions: ambient air should not be obviously polluted corrosive or flammable gases, water vapor, no serious contamination and recurrent severe vibration. Severities under severe conditions designed to meet the requirements of Class 1.
Note: Out of the above normal conditions of use, the user can be determined in consultation with the manufacturer.
Model and meaning
The main technical parameters
Switching equipment technical parameters
Advanced testing equipment for high-quality products to provide a guarantee
KYN mouth -24 vacuum circuit breakers technical data
KYN -24 technical data port vacuum circuit breaker spring operating mechanism
The main structural features
Switchgear according to I. EC62271-200 and GB3906-2006 "3.6-40.5kV AC metal-enclosed switchgear and control equipment" and other standards and design. Overall by the cabinet and in the home-removable parts (ie Used) composed of two parts. Cabinet is divided into four separate compartments, shell protection grade IP4X, ask each cell door is open and the circuit breaker protection class IP2X. Having overhead inlet and outlet, the cable into the outlet and other functional programs, after permutation and combination of programs can become a form of power distribution equipment. The switching equipment installation and maintenance can be performed from the front, so it can double back to back arrangement and composition of the wall installation, improve J, safety switchgear, flexibility, reduced footprint.
Housing and other
Switchgear shell is made of imported aluminum zinc coated steel sheet by CNC machining, and take multiple composite-fold process, so that the whole cabinet does apparatus with high precision, strong anti-corrosion and anti-oxidation, and thanks multi-fold process, so that the cabinet than other similar equipment cabinet overall light weight, high mechanical strength, beautiful appearance. The cabinet adopts assembly structure with high strength rivet nut and bolt connection is made. This makes processing cycle is short, parts versatility, small footprint, easy to organize production.
Handcart skeleton is also used steel sheet assembled after CNC machine processing, handcart and cabinet insulation coordination, mechanical interlock safe, reliable and flexible. Depending on the application, sub-circuit breaker handcart, voltage transformer handcart, metering handcart, isolating handcart, trolley can be completely interchangeable with the specifications. Used in the cabinet there is an open position, test position and work location, the location of each part do not have a positioning device to ensure reliable interlock must proceed as anti-misuse interlock program. Used adopt various worm, the worm shake advance, withdraw, its easy operation, flexible and suitable for a variety of operating personnel on duty when required handcart cabinet removed, with the 'dedicated transport vehicles, can be removed, and the various entry inspection, maintenance; and the use of mid-mounted, the entire volume of small handcart, inspection, and maintenance are easy.
Equipped with real circuit breakers and other auxiliary equipment on the circuit breaker. When running with the trolley car into the cabinet circuit breaker compartment, can reliably locked in the open position or the test position; and the cabinet door meter: positional indicator display its location. But only after fully locked to shake advancing mechanism will push the car working position. After the trolley to the operating position, the handle that is to promote pan does not move, the position indicator display their location, Used mechanical interlock can be a reliable guarantee of the trolley only at work or home test position, the circuit breaker can be divided or closing gate; and day. Used only in the opening state, the circuit breaker can be moved.
Switchgear major electrical components has its own separate compartment, namely: circuit breaker room, bus room, cable room, relay instrument room, ask each compartment protection class portion reaches IP2x; in addition to an outdoor relay, the other three compartment unit each has its own pressure relief channel. Because the circuit breaker in the home structure, the position of the cable compartment is greatly increased. So the device can be accessed by multiple cables.
Circuit breaker compartment
Track installation on both sides of the cabinet, the cabinet for trolley live glide by the off position or test position to the working position, the static contact box separator (valve) is installed after the break handcart room, when the trolley from off position or the test position to the working position during BU, the static valve linkage with handcart on the contact, and automatically turn on; move in opposite directions when the shutter is automatically closed. Used retreat until a certain position and completely covered for static contact box, to form an effective isolation. And because the upper and lower shutter no linkage, can be locked in the maintenance side of the shutter charge, thus ensuring the repair and maintenance personnel do not touch a charged body, when the circuit breaker compartment door closed, the same trolley can be operated through the door observation window, you can observe compartment Used indoor location, closing and opening the display and storage condition.
Busbar compartment trial
Main bus station is spliced to each other through a single connection. Supported by bus and static contact box fixed. The main bus and communication bus rectangular cross-section of copper. Supported by a bolt bus coupled to the main bus and static contact box, no other support. For special requirements, the bus and the available heat shrink insulation sleeve coupling bolts and end cap cover. Adjacent cabinet bus cannula fixed. Such connection between the bus reserved air cushioning. In the event of an internal arc fault when it can be prevented through melting, the sleeve can effectively limit the accident it does not spread to other compartments cabinet.
Switching equipment used in the home-and thus the cable compartment space is large, current transformers, grounding switch mounted on the rear wall of the compartment, surge arresters installed in the compartment. After the withdrawable handcart and horizontal partition is removed, construction workers will be able to install and maintain into the cabinet from the front. Removable non-metallic closure plate or within the premises of the cable conductor cables, each phase can be 1 to 3 and single-core cables per phase can be connected with six single-core cables, if necessary, the cabinet bottom cable connection configuration slotted magnetic metal sealing plate, ensuring easy construction.
Channeling meter relayD
Instrumentation can be installed indoors secondary equipment protection components, instruments, live monitoring indicators, as well as special requirements. Control lines laid in the trough sufficient space, and a metal cover to the secondary line and high-pressure isolation room. The left trunking for small bus out of control reserved switchgear inside their own small line laying on the right. Meter relay in the left chamber of the roof also facilitate the construction of a small bus through the hole. When wiring, instrument room for flip top cover plate, easy to install a small bus.
Interlock to prevent misuse
Switching devices built with safety interlocks cho reliable, fully meet the "Five Anti" requirements.
1.Mounted on the instrument compartment door suggestive KK button or switch to prevent accidental together, misclassification circuit breakers.
2Circuit breaker in the test or working position, the circuit breaker can be combined, sub-operation, and after the breaker closing, the handcart can not move to prevent the misuse of the push-pull circuit with load.
3.Only when the grounding switch is in the OFF position, the circuit breaker can be moved from the test off position working position. Only when the circuit breaker is in the test / disconnected position, earthing switch in order to perform the closing operation (ground voltage switch with a display device). This achieves to prevent the charged closing earthing switch and prevent the grounding switch is in the closed position closing the circuit breaker.
4.When the earthing switch is in the open position, the lower door and the back door can not be opened to prevent the wrong people charged interval.
5.Circuit breaker in the working position, the second plug is locked removed.
6.Each cabinet can be installed electrical interlock.
Pressure relief device
In the circuit breaker compartment above the busbar compartment and cable compartment are equipped with pressure relief devices, when the circuit breaker or busbar an internal arc fault, with the emergence of the arc, switchgear internal pressure rises, installed in the door of BU special seals the former cabinet closed, top equipment relief metal plate is automatically opened to release the pressure and discharge gas, to ensure that the operator and switchgear safety.
Secondary position interlock plug and handcarts
The second line of the second line contact with the circuit breaker switch on the device through the second plug manually to achieve. Secondary plug movable contact through a nylon bellows telescopic pipe associated with the circuit breaker, the second static contact seat installed in the switch cabinet handcart room right above the circuit breaker only live test, disconnected position when, in order to be able to plug in and lift the second plug, circuit breaker in the working position by Ding mechanical interlock, the second plug is locked and can not be released due to the closing of the circuit breaker mechanism is locked electromagnet , the circuit breaker before the secondary plug is not be turned on only opening, so it can not switch on
Live display device
If the user needs, switchgear may be provided with a detection circuit operation can be selected member that is charged display devices. This means hill high pressure sensor and a portable display components, the user external conductive wire is connected as a whole, which means not only can prompt high pressure loop charged situation, but also with an electromagnetic lock together to achieve mandatory locking switch handle, to prevent the charged off the ground switch prevent accidental ask every person charged, thereby enhancing the anti-error performance ancillary products.
Prevent condensation and corrosion
In order to prevent the danger of condensation caused in high humidity or large temperature changes in climate, in the control room installed automatically fall condensation control system, the circuit breaker compartment and cable compartment heater are located, in order to use and to prevent corrosion in the above environment.
Interior set up a separate cable 5 & times; 30mm copper can penetrate the ground adjacent to each cabinet, and good contact with the cabinet. Direct grounding of the components of this grounding strip for use: At the same time because the entire cabinet with aluminum zinc coated plate juxtaposition linked, so that the entire cabinet Gao in a good state of the ground to ensure the safe operation of operator exposure cabinet umbrella.
Installed base switchgear construction shall comply with the relevant provisions of "Power Construction and Acceptance Technical Specifications".
Switching equipment installed base generally at the second concreting. The first installation of the switchgear cabinet member either angle or square steel, channel member base, second concreting complement the ground floor, the thickness is generally high as 60mm, when the concrete is poured concrete supplementary layer should be less than the height of the plane member 1 ~ 3mm.
Switchgear foundation installation diagram see Figure 4.
When installed infrastructure to ensure the quality of the installation, technical standard framework for the installation of meters l tolerance 1mm.
Install switching equipment
Installed base size See Figure 3 switching devices
When a separate cabinet, former cabinet corridor of 2.5 meters is appropriate, when double-row arrangement. Cabinet asked the operating corridor 3 meters is appropriate
According to project needs and drawing marked the switch cabinet shipped to their specific position, if a long row of switchgear (more than 10), LCL work from the middle part of the beginning.
Switchgear live during transport, you should use a specific means of transport such as cranes. Do not use the roller crowbar; and push the circuit breaker is forbidden to carry people along with the cabinet, hand breaker afternoon (as well as other handcart) and then only if the cabinet is installed but into the corresponding chamber.
One by one installation switchgear. Including both horizontal and vertical. Switchgear installation irregularities should not exceed 2mm.
When the switching device is fully set table (splicing) is good, it can be used with M12 anchor bolts or foundation associated with welding and weld the basic framework.
Switchgear bus are rectangular bus bar, and is segmented form, when elected with different currents chosen just the number of different specifications of the bus, so the installation must follow these steps:
Ten dry with a soft cloth to clean wipe wipe bus, check whether the insulation casing damage in joints coated with a conductive paste or neutral Vaseline
A cabinet by one cabinet installation bus, the bus segment and the corresponding branch bus together, then tie should be inserted into a suitable spacer, screw it.
Grounding switching device
Presupposition of webs each cabinet ground bus together.
Inside the switch to connect all need grounding wire.
The base frame and the grounding strip connected to the cabinet ttl ~ l if more than 10 units or more, there must be two or more ground.
Ground wire and grounding switch switchgear ground bus connection.
After checking to see switchgear installation
When the switching equipment in place to eliminate dust or debris inside the device, and then check all the fastening bolts loose, the circuit breaker in the cabinet to promote the introduction, to carry out a closing operation, to observe any abnormal according to the secondary circuit diagrams check the wiring is correct, the relay adjustment, check the interlock is valid.
Use and maintenance
Switchgear in operation, in addition to operating personnel should abide by the relevant regulations, it must also pay attention to the following issues
While the switching device switching device designed to ensure that all parts have operating procedures correctly interlocked, but the operator of the various parts of the switching device inputs and exits, should remain in strict accordance with the requirements of the rules of conduct and technical documents, should not be free to operate, and more It should not be obstructed during operation, without analysis by force, otherwise. Likely to cause damage or even cause accidents.
No circuit-breaker panel ground wire operation
a, the circuit breaker can be pushed into the cabinet member removed: breaker car ready before the cabinet extrapolated into the cabinet, you should carefully check the circuit breaker is in good condition, a seamless installation parts, tools and other debris on the presence or absence of institutions inner box or switch to confirm no problem after the car mounted on the transport vehicle and locked onto the transport vehicle before the ark, the car rose to a proper position, the transfer vehicle front position lock plate is inserted and the cabinet bulkhead jack after the transfer vehicle and cabinet lock, turn on the end of a road car locking hook, the car stable while pushing people locked cabinet. Once you have confirmed the car and lock the cabinet is good, lifting transport vehicles and cabinet lock, opened the car transporter
b, inside the car in operation: After loading the car in the cabinet from the transport vehicle, which is inside the off position, if you want to run into the car, so the car at the first test position, the auxiliary circuit plug should be good, if energizing the instrument panel on the chamber test position indicator light, then you can not turn on the main circuit in the case of electrical operation test of the car, if you want to proceed, it must take all the doors closed, with the key inserted into the lock hole to lock the door and make sure the circuit breaker sanctions gate status (see article d) It can then be inserted on the trolley operator shake people panel hole, clockwise to shake, shake to clear blocked until crisp and hear auxiliary switch sound while working position on the instrument panel room lights, and then remove the crank. At this time, the main circuit is turned on, the way is in the working position ashamed, may go the same way by controlling its fiscal conduct, sub-operation.
If you are ready to exit the car from the working position, first of all, make sure the circuit breaker is opening at the f state (see d), the interpolation operation at first hand crank, turn the crank until the obstruction and hear the crisp sound of the auxiliary switch , the car will be returned to the test position. At this point the main circuit has been completely disconnected, closed metal shutter.
c, remove the car from the cabinet: If the car ready to remove from the cabinet, should first determine the small car has been testing position, and then releasing the auxiliary poke head go the same way and move the plug catch in hand Pottinger shelves, The Transporter cabinet before the car (with the same load at first glance, a small cabinet), then unlock and pull out the trolley, the trolley when fully enter and confirm the transfer vehicle transporter in lock, lifting transport vehicles and lock the cabinet, the pull back after lunch and transfer an appropriate distance, slow stop, such as when to use car transport car transport long distance, for promoting small afternoon transfer process to be extra careful to avoid accidents during transport.
Open and close state of the breaker and the circuit breaker can mountain board signs and open and close the control room while the board points off both LEDs and determination.
If you can see through the observation window handcart cabinet panel panel J: green opening signs, it is determined that the circuit breaker is in the open state, if the auxiliary circuit is energized, the instrument panel and chamber opening indicator light:
If through the cabinet and panel viewing window to see the red handcart panel BU closing signs, it is determined that the circuit breaker is closed, the back slightly at this time if the auxiliary is energized, closing the control room lights on the front panel.
Grounding switch circuit breaker operation cabinet
The circuit breaker cabinet and pushing people to remove the program from the handcart cabinet, with no grounding switch circuit breaker cabinet procedures are identical. Used only when the cabinet during the operation and during the operation of the earthing switch should pay attention to the place described as follows:
a. handcart operation cabinet
When people are ready to push trolley operative position, in addition to compliance with paragraph 5.1.1 b maintenance article drew attention to the various requests, it should also confirm the earthing switch opening at the dry state, otherwise the next step the operation could not be completed.
, Sub-grounding switch, should first determine the car has retreated to the test / disconnected position, advancing the promise to remove the crank, and then press the grounding switch operation hole interlocking curved plate, insert the grounding switch operating handle 90 is rotated clockwise degree, grounding switch for the closing operation. If the counter-clockwise rotation of 90 degrees, then the grounding switch to the opening operation.
General operating isolation cabinet
Isolation handcart allowed with load operation. When carrying out isolation handcart cabinet, you must first ensure that the circuit breaker associated with it, but after the circuit breaker auxiliary contacts which converts electrical interlock with the mating lift isolation handcart on, only this when the operation to isolate the vehicle; the same specific operating procedures and operating the circuit breaker:
Note the use of interlocking
This product is based on interlocking mechanical interlock based. Supplemented by electrical interlock to achieve the "Five Anti" lockout requirements. However, the operator should not lead to the neglect of the rules requires that only procedures system and technology combine to effectively protect the interlock play for River. Prevent misuse accidents.
Input and releasing interlock function of this product, mostly during normal operation simultaneously achieved. No additional steps. Such as the discovery operation is blocked (such as an operating resistance increases), you should first check whether there Eurya possibility of misuse and should not be forced to operate as well as damage to the device, and even lead to malfunction of the accident.
Some interlock operation due to the special need to allow emergency release (such as under cabinet panels and earthing switch interlock). The emergency release must be used carefully, not often used, but also to take the necessary precautions when using, once processed, the status quo should be restored immediately interlock.
Product structure and dimensions
Switchgear floor installation size schematic
Products based installation drawing
A combination of sample program
Users must provide the following information when ordering:
1, the main wiring scheme number and line system diagram, Pareto diagram and layout plan;
2, the second function diagram, terminal arrangement diagram, when the absence of the terminal arrangement diagram according to the manufacturer terminal block arrangement;
3, electrical switchgear components models, specifications, quantity;
4. Summary of electrical equipment;
5, two cabinets and wall cabinets asked Bus Bridge Bus Bridge into the line, we need to provide cross-cabinet height and size;
6, Ji switchgear used when ordering special environmental conditions should be presented in;
7, or provide other required number of species beyond accessory.
LIYUAN POWER EQUIPMENT JOINT STOCKS CO.,LTD.
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