Kyn28 high voltage switchgear cabinet is composed of two parts: cabinet frame and extractable hand truck. All hand trucks adopt worm swing to push and exit, which is light and flexible. The whole handcart is small in size and convenient for inspection and maintenance. The hand truck has a device in place in the test position and working position in the cabinet to ensure the reliability of mechanical interlock. And for kyn28 high-pressure switchgear use environment is required, below we look at kyn28 high-pressure switchgear use environmental conditions and structural characteristics are what?
First, the use of environmental conditions
1. Altitude
When the product is used at 10kv, the altitude shall not exceed 1000m;
When the product is in use at 6ky, the altitude can be used up to 3000m;
2. Ambient air temperature
Upper limit +40℃, lower limit 1 15℃.
3. Relative humidity of air
The daily average is no more than 95%, and the monthly average is no more than 90%.
4. Saturated vapor pressure
The average is no more than 2. 2×10-3mpa, the monthly average is no more than 1. 8 x 410-3 mpa.
5, the surrounding air should be free from obvious pollution of corrosive or combustible gases, water vapor, etc
6, no frequent violent vibration. The earthquake intensity does not exceed 8 degrees
Second, structural characteristics
1, the cabinet put oneself in another's position
The cabinet body is fully assembled structure, each group of parts through the numerical control machine tool plus, bending and then bolted, excluding the welding and human factors caused by the deviation, the size of the assembly is by the machine tool plus the accuracy to ensure. Switch cabinet by the metal partition divided into instrument room, hand car room, bus room, cable room four small rooms.
A. instrument room:
Instrument room is used to install various relay, instrument, signal indication, operation switch and other components. Its upper part is equipped with a small bus room, which can be laid with 15 loops to control the small bus.
B. Handcart room:
Special track and guide devices are installed in the interior of the handcart for the inner sliding and working of the circuit breaker handcart. A valve mechanism is installed at the front end of the static contact to ensure the safety of operators and maintenance personnel.
C. bus room:
The busbar room is used for the installation of main busbar, and its connection is completed by casing through wall, which can prevent the expansion of accidents. Bus room design has plenty of space, can realize the connection and overhead outgoing function.
D. cable room:
Cable room can be installed with current ear sensor, grounding switch with 80ka short circuit current capacity, as well as lightning arrester and cable, the cable installation height is more than 700mm from the ground.
2, the body
Circuit breaker equipped with zn28-10 series vacuum circuit breaker (its form a complete set of operating mechanism for cdl7, ctl9 series operation mechanism) series vacuum circuit breaker, also can match zn65 and 3 ah handcart skeleton composed of song after laser cutting machine and bending, has high strength and versatility, handcart in the enclosure movement, side guide is rolling bearing, can ensure the accuracy of handcart into the tank after cooperation. The transportation, entry and exit of handcart are completed by auxiliary handcart, or the center floor circuit breaker handcart is directly adopted. The auxiliary handcart has two locking functions:
A. Assist the locking of handcart and cabinet when entering and leaving the cabinet.
B. During transportation, assist the handcart to lock the circuit breaker handcart. As a result of reasonable design, the carriage of handcart, enter and exit ark is very relaxed.
3. Guarantee of propulsion and interlocking mechanism
This mechanism integrates propulsion and interlock, which is reliable and easy to operate. Due to the reasonable design of track and guide device, the operation of handcart after entering the cabinet is very easy and labor-saving. Interlock device in addition to contain gb3906-1991 provisions of the "five prevention" lock function, also with the cabinet door with interlocking function, that is, after closing the cabinet door to unlock and operate the mechanism, the hand car was moved to the working position when the cabinet door cannot be opened, such mandatory closing the door operation mode to fully ensure the safety of the operator.
4. High insulation level
The air gap between the two phases in the cabinet is greater than 125mm, and the composite insulation distance is greater than 30mm. The fire retardant materials DMC and SMC are selected for the sleeve and supporting insulation parts in the cabinet, and the creepage ratio is greater than 2. 0cm/kv design.
Main products: baoding dry type transformer, baoding box type transformer, baoding oil immersed transformer, baoding high and low voltage complete sets of equipment. I companies to follow "detail decides success or failure, honesty molded the future" of the enterprise purpose, adhere to "quality measuring market, seek development by innovation, to management for efficiency" business philosophy, to make my company's products are widely used in power plant, chemical, construction, mining, metallurgy, rail transportation and other industries, to meet the needs of various users, my company rely on superior product quality, thoughtful service, won the trust of our customers.
