KYN28-12 center cabinet introduction
Kyn28A-12 high-voltage power distribution cabinet can be used as a power station in the indoor power distribution environment with rated voltage of 3-12kV three-phase AC 50Hz. Small and medium-sized generators provide power, industrial and mining enterprises provide high-voltage circuit control and protection. Detection and use of large high-voltage motors to start, receive power, etc. This type of power distribution cabinet has the function of “Five Preventionsâ€: prevent the circuit breaker from misoperation, prevent the load from pulling the handlebar, prevent the grounding switch from being powered in the grounding state, prevent the grounding knife switch from being charged and prevent the power from entering the isolation room, etc. Anti-function, simple structure, advanced, reasonable, easy to use, safe and reliable, is one of the commonly used high-voltage power distribution cabinets
"> KYN28-12 central cabinet structure The whole cabinet is made of bent aluminum-zinc steel plate. The fully enclosed structure is insulated from the power distribution room by thin steel plate and fastened by screw connection. All electrical operations in the cabinet can be completed with the door closed. High degree of protection and safety. The cable room has a large space and can be connected to multiple circuit lines, and the whole cabinet has five anti-function functions and reliable wall installation saves space area of ​​the power distribution room. The handcart skeleton is made of steel plate processed by CNC machine tool and riveted. The handcart and the cabinet are insulated and mechanically interlocked, which is safe, reliable and flexible. According to the use, the handcart can be divided into circuit breaker handcart, voltage transformer handcart, metering handcart and so on. The height and depth of all types of handcarts are uniform, and hand trucks of the same specification can be interchanged. The handcart has an isolation test position and a working position in the cabinet, and each position is provided with a positioning device to ensure reliable interlocking, and must be operated according to the interlocking anti-misoperation procedure. All kinds of handcarts are driven and withdrawn by nuts and screw rods. The operation is light and flexible, and is suitable for the operation of the on-duty personnel.
KYN28-12 model description
"> Installation of KYN28-12 central cabinet switchgear
1. According to the engineering needs and drawings, the switch cabinets are transported to their specific locations. If a row of long switch cabinets is arranged (for more than 10 units), the cabinet work should start from the middle.
2. With a specific means of transport such as a crane or forklift, it is strictly forbidden to use a roller crowbar.
3. Pull out the circuit breaker handcart from the switchgear and keep it in a safe place.
4. Loosen the fixing bolts in front of the busbar compartment and remove the vertical partition 9.
The fixing bolt loosening off the passage compartment below the horizontal partition 19, and remove the horizontal partition.
6. Loosen and remove the bottom plate 16.
7. Remove the cover plates 1, 2 from the control slot on the left side of the switchgear. The right front control slot plate is also removed at the same time.
8. On the basis of installing the switchgear one by one, including horizontal and vertical aspects, the installation accuracy of the switchgear shall not exceed 2mm.
9. When the switchgear cabinet is fully assembled (spliced), it can be connected to the base channel steel by ground screw or welded to the base channel steel by electric welding.
KYN28-12 center cabinet busbar installation
The busbars in the switchgear are rectangular busbars and are in the form of segments. When different currents are selected, the selected busbars are only of different sizes. Therefore, the following steps must be followed during installation:
1. Wipe the busbar with a clean, dry soft cloth, check the insulation sleeve for damage, and apply conductive paste or neutral petroleum jelly to the joint.
2. Install a busbar in a cabinet connected to a cabinet. When the busbar section and the corresponding branching busbar are bolted together, insert a suitable spacer and tighten with bolts. >
Serial number | name | unit | data | |||
1 | Rated voltage (maximum operating voltage) | KV | 3.6 7.2 12 | |||
2 | Rated frequency | Hz | 50 | |||
3 | Circuit breaker rated current | A | 630 1250 1600 2000 2500 3150 | |||
4 | Switch cabinet rated current | A | 630 1250 1600 2000 2500 3150 | |||
5 | Rated thermal stability current (4s) | KA | 16 20 25 31.5 40 50 | |||
6 | Rated dynamic current (peak) | KA | 40 50 63 80 100 125 | |||
7 | Rated short-circuit breaking current | KA | 16 20 25 31.5 40 50 | |||
8 | Rated short circuit closing current (peak) | KA | 40 50 63 80 100 125 | |||
9 | Rated insulation level | 1min power frequency withstand voltage | KV | twenty four | 32 | 42 |
Lightning impulse withstand voltage | KV | 40 | 60 | 75 | ||
10 | Protection level | The enclosure is IP4X, IP2X when the compartment and circuit breaker compartment door are open | ||||
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