KYN28A -12 Withdrawable Switchgear Safe Electrical Equipment

KYN28A -12 Withdrawable Switchgear safe electrical equipment

 

 

 

 

Service Conditions

 

◎ Ambient airtemperature: -15°C~+40°C;

 

◎ Relative humidity: Daily average 95%，and daily average of water vapor pressure < 2.2kPa;

◎ Monthly average «90%, and monthly verage of water vapor pressure < 1.8kPa;

© Altitude: ^1000m;

◎ Seismic intensity: not beyond Ms8.

◎ Ambient air should be free of pollution of corrosive or flammable gas or vapor;

◎ No obvious vibration;

Main technical parameters
Rated voltage	.....................................	kV	3.6、7.2、12
Rated frequency	.....................................	Hz	50
Rated current of circuit breaker	.....................................	A	630/4000
Rated current of switchgear	.....................................	A	630/4000
Rated short-time withstand current (4S)	.....................................	kA	20、25、31.5、40
Rated peak withstand current (peak)	.....................................	kA	50、63、80、100
Rated short-circuit breaking current	.....................................	kA	20、25、31.5、40
Rated insulation level 1min power frequency withstand voltage	Pole-to-pole, pole-to- ground	kV	24、32、42
	Between open contacts	kV	24、32、48
Lightning impulse withstand voltage (peak)	Pole-to-pole, pole-to- ground	kV	40、60、75
	Between open contacts	kV	46、70、85
The shell is IP4X, and it is IP2X when the compartment door and circuit breaker chamber door are opened

Features

 

1: STRICT protection step to ensure personal safety

 

2: The cable room can be installed as many as 9 single-core cables

 

3: Operation and testing positions will be established for the handcart, and both positions are equipped with safe and reliable positioning device and display device

 

4: The enclosure is completely assembled from aluminized and galvanized steel plate, which are machined and bent by machine tool and then bolted.

 

5: It has high mechanical strength and its neatness and beauty is ensured.

 

6: The switchboard door is sprayed with plastic, also has strong capacity of impact resistance and corrosion protection.

 

7: The primary switch may be provided with VD4 vacuum circuit breaker and C3 series of fixed type load switch from ABB, various domestic vacuum circuit breakers (such as VS1, VH1, VK, ZN28) may also be provided in lieu of the same foreign products.

 

8: Front door is installed with a observation window to check the operating state of the components inside the room

 

 

Seven steps for power transmission operation of the main power cabinet of KYN28 high-voltage switchgear

 

1) Close all cabinet doors and rear sealing plates and lock them properly.

2) Push on the transfer trolley and position it, push the circuit breaker handcart into the cabinet and position it in the test position. (When inferring the circuit breaker, press the two push pull handles of the circuit breaker towards the middle and push them forward with force (pushing into the cabinet). After the circuit breaker reaches the test position, release the push pull handle and the handle should automatically reset.) Manually insert the aviation plug, close the handcart compartment door and lock it.

3) Observe whether all instruments and signal indications on the upper cabinet door are normal. (Normally, the comprehensive relay power supply light is on, while the circuit breaker opening indicator light and energy storage indicator light are on. If all indicator lights are not on, open the upper cabinet door and confirm whether the power switches of each busbar are closed. If all indicator lights are closed and still do not light up, the control circuit needs to be repaired.)

4) Insert the circuit breaker handcart handle into the handle socket and press it down with force. Rotate the handle clockwise for about 20 turns, and remove it when the handle is clearly blocked and accompanied by a "click" sound. At this time, the handcart is in the working position, the aviation plug is locked, and the circuit breaker handcart circuit is connected. Check the relevant signals. (Due to the mechanical interlocking between the main power supply and the backup power supply, when the main power supply circuit breaker is in the working position, the backup power supply circuit breaker must be in the experimental position)

5) Observe the live display and confirm that the external power supply has been sent to this cabinet. (The display light on the live display panel indicates that the external power supply has been sent to the lower contact of the circuit breaker in this cabinet. If the live display light is not on, the external power supply needs to be sent to this cabinet first.)

6) Close the transfer switch to close the circuit breaker for power transmission. At the same time, the red closing indicator light on the instrument door lights up and the green opening indicator light goes out. Check other relevant signals, everything is normal, and the power transmission is successful. (When operating the switch for opening and closing, rotate the operating handle clockwise to the indicated closed position on the panel. After releasing the handle, the operating handle should automatically reset to the pre closed position.)

7) If the circuit breaker automatically opens after closing or automatically opens during operation, it is necessary to determine the type of fault and eliminate it before re powering according to the above procedure. (When the circuit breaker with a line fault is opened, an audible and visual alarm will sound, indicating that the red fault indicator light on the panel is on and the signal screen fault sounds. At this time, observe the comprehensive relay protection. If the protection trip light is on, the fault is line overcurrent. During fault maintenance, press the signal screen reset button to cancel the sound. After maintenance is completed, press the comprehensive relay protection panel reset button to manually reset the comprehensive relay protection.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q5 : Is OEM/ODM available?

A: Yes, it is! Our products can be Customized. We have design and engineer teams,we can customize products according to customers' drawing or requirements.

 

Q6 : You are manufacturer or trading company?
A: We are factory, As a 100% professional manufacturer with 20 year's manufacturer experience, we could produce products according to customers' requirements and we could also control the quality of products 100%.

 

Q7 : Can the price be negotiated?

A: Yes, the price is negotiable. It can be changed according to your quantity or package

 

Q8 : How about inspection?

A: We have the whole inspection system from raw material to end products include temperature rise test,salt spraying test conductor type test,mechanical life test.

 

Q9 : What is payment terms?

A: T.T, Paypal,Western Union,Alibaba trade assurance and L/C is acceptable. 30% T/T in advance ,70% balance before shipment.

 

Q10 : What is the service offered by company?

A: We have the professional engineer team which can design and develop the mold to arrive different customer requirement.

We also have the sales team to offer good service from pre-sale to after-sale.

 

This product is usually customized.
We are a manufacturer and have a professional technical department that can design and provide solutions according to customer needs.
Please contact our sales personnel to obtain design drawings

Here are our customer examples for your reference

 

IF NEED MORE DETAILES,PLEASE FEEL FREE YO CONTACT US

 

 

Hot Tags: kyn28a -12 withdrawable switchgear safe electrical equipment, China, manufacturers, suppliers, customized, low and high voltage switchgear, high voltage switchgear and controlgear, electric power distribution equipment switchgear, Handcart Type Circuit Breaker, Three-phase Switchgear, metal clad AC switchgear