KYN61-40.5 switch Cabinet details
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Scope of application
KYN61-40.5 AC metal armored removable switchgear (hereinafter referred to as switchgear) is a 40.5KV three-phase AC 50HZ complete power distribution device, which is mainly used for receiving and distributing electric energy in power plants, substations and distribution rooms of industrial and mining enterprises, and can realize the control, protection and monitoring of circuits; In addition to being widely used in general power systems, it can also be used in places with frequent operations. The switchgear complies with GB3906-91 3-35KV AC Metal Enclosed Switchgear and IEC298 AC Metal Enclosed Switchgear and Control Equipment.
Features and functions
The cabinet closing structure can be divided into cabinet body and handcart according to composition. The cabinet is equipped with a new type of fully insulated vacuum circuit breaker or imported sulfur hexafluoride circuit breaker. The cabinet body adopts the assembly structure to improve the matching accuracy between the handcart and the cabinet body. The product has a beautiful appearance, which can quickly prepare for production, assembly and timely delivery. The cabinet body is made of imported aluminum coated zinc bending Bolt Assemble and form.
Typical schemes can be divided into relay Instrument room, handcart room Cable There are four parts of the room and the bus bar room, and each part is separated by a grounded metal partition, so that the extension of the arc can be prevented, so that the possible applause is limited to a very small range. Except the relay instrument room, other compartments have separate sliding pressure channels. When a part needs to be replaced or repaired, it is not necessary to stop the whole cabinet, just cut off the Power Supply Maintenance personnel can enter the room safely. Its enclosure protection grade is IP3X; The protection level is IP2X when the handcart door of the circuit breaker is opened and the handcart is in the disconnected/test position.
The door closing operation can be realized. All normal operations of the switchgear, including opening and closing of the circuit breaker, pushing the circuit breaker handcart to the working position and exiting to the opening/testing position, and opening and closing of the grounding switch can be carried out under the condition that the high-voltage compartment door is closed.
The switchgear has other primary schemes such as cable incoming and outgoing lines, overhead incoming and outgoing lines, bus connection, isolation, voltage transformer, lightning arrester, etc. The switchgear adopts composite insulation, and the material technology is completely based on the domestic.
The main circuit adopts insulated bus, and the interphase and connector are equipped with insulating sleeves made of flame-retardant materials. The main bus is a break bus, and adjacent cabinets are separated by bus sleeves, which can effectively prevent the spread of accidents and play an auxiliary role in supporting the main bus.
The cable room is equipped with current transformers, grounding switches, etc., and the ample space is convenient for the connection of multiple cables.
A metal valve is installed in front of the contact box. The upper and lower valves open automatically when the handcart moves from the disconnection/test position to the working position, and close automatically when the handcart moves in the opposite direction, forming effective isolation.
The interlocking between the main switch, handcart, grounding switch and cabinet door adopts the mandatory mechanical locking mode to meet the "five prevention" function.
Use environment
a. Ambient temperature: upper limit: 40 ℃; lower limit: - 10 ℃;
b. The altitude shall not exceed 1000m;
c. Air relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%;
d. The seismic intensity is not more than 8 degrees
e. It is not applicable to places with obvious pollution such as corrosive or combustible gas and water vapor.
Note: In case of use under normal environmental conditions beyond those specified in GB3906, the user and the manufacturer shall negotiate.
