Conditions of use

a. Ambient temperature: upper limit +40°C, and the average value measured within 24 hours does not exceed 35°C, and the lower limit is -15°C
b. Altitude: the altitude does not exceed 1000M;
c. Relative temperature: the daily average value does not exceed 95 %, the monthly value does not exceed 90%;
d. Earthquake intensity: no more than 8 degrees;
e. Surrounding environment: a place without fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.
Structural Description
KYN61-40.5 metal-enclosed switchgear is mainly composed of two parts: the cabinet and the circuit breaker handcart. The cabinet is divided into four separate compartments: circuit breaker room (also called handcart room), busbar room, cable room, and relay instrument room. The protection level of the housing is IP4X, and the protection level when the circuit breaker door is open is IP2X. The circuit breaker handcart is composed of a circuit breaker and a chassis trolley, and has cable incoming and outgoing lines, overhead incoming and outgoing lines, communication, metering, isolation and other functions. The cabinet is made of high-quality cold-rolled steel plates or aluminum-zinc coated steel plates and processed by CNC sheet metal. Bending and forming, assembled through high-strength bolts, nuts (grade 8.8) or blind rivet nuts.
Each component of the cabinet adopts plastic spraying or surface galvanizing process, so that the cabinet not only has high precision, but also has the characteristics of light weight, high mechanical strength and beautiful appearance compared with similar equipment. At the same time, due to the use of assembled structure, the parts are highly versatile, the processing cycle is short, and the production area is small. Production can be conveniently organized according to the order situation.

The frame is made of high-quality steel plates that are bent and welded. According to the purpose, the handcart can be divided into circuit breaker handcart, isolation handcart, voltage transformer handcart and arrester handcart. Handcarts of the same specification can be interchanged. This switch cabinet is floor-standing. style handcart cabinet. The chassis of the handcart has a screw nut propulsion mechanism, an overrunning clutch and a chain mechanism, etc. The screw nut propulsion mechanism can be operated lightly to move the handcart between the test position and the working position. With the self-locking properties of the screw nut, the handcart can be reliably locked in the working position. This prevents accidents caused by the movement of the handcart due to electrodynamic force. The overrunning clutch activates when the handcart moves back to the test position and advances to the working position, so that the operating shaft and the screw are automatically separated and idling, which can prevent over-limit operations from damaging the propulsion mechanism.
KYN61-40.5 metal-enclosed switchgear is equipped with independent compartments, namely circuit breaker room, busbar room, cable room, relay instrument room, and the circuit breaker room, busbar room and cable room are all equipped with pressure relief channels.
KYN61-40.5 type metal-enclosed switchgear is equipped with a reliable anti-mistake interlocking device, which can meet the five-proof requirements. There is a reliable grounding device between the trolley and the cabinet. There is a 5*50 (mm2) grounding copper bar in the cable room. This copper bar can penetrate the entire arrangement and have good contact with the cabinet. It can be used for direct grounding components, so that the entire cabinet is in a good grounding state. There are pressure relief channels in the circuit breaker room, bus channel and cable room. One end of each pressure relief partition is fixed with metal bolts, and the other end is fixed with plastic bolts. When a fault occurs, the internal high-pressure gas can easily remove the pressure relief cover. The plate breaks open to release the pressure to ensure the safety of operators and switchgear.
The switch cabinet is equipped with a live display device that monitors the live status of the primary circuit. The device can not only display the charged status of the high-voltage circuit, but can also cooperate with the electromagnetic lock to achieve forced locking, thereby improving the product's protection function. In order to prevent the harm caused by condensation in climate environments with large altitude and temperature changes, heaters can be installed in the circuit breaker room and cable room respectively.

Model and meaning

Switch diagram

Technical parameters