GB/T 3906 2020 Electrical Equipment China Execution Standard Kyn Central Cabinet

• Customization: Available
• Type: Distribution Metering Box
• Structure: Protection
• Model NO.: KYN central cabinet
• Certification: GB/T3906-2020
• Form: All- packaged Type
• Operation Voltage: Low Voltage
• Size: 1 Uint
• Application Range: High-rise Buildings
• Shell Material: Aluminum Alloy
• Shell Protection Grade: IP4X
• Brand: Zhongtie
• Rated Voltge: 24 Kv
• Rated Current: 630,1250,1600,2000,2500 a
• Rated Rerquency: 50 Hz
• Rated Busbar Current: 630-3150 a
• Transport Package: Wooden Box
• Trademark: zhongtie
• Origin: China
• HS Code: 853710909

Product Description

Product Description

KYN28-12 armored movable-type AC metal-enclosed switch units is suitable for three-phase AC 50Hz power system and mainly receives and distributes the power energy and also controls,protects and detects the electric circuits.Metal-enclosed structure is used and the housing is made of high-quality cold-roll steel sheets and con- nected with bolts,with a degree of protection of IP4X.This product is comprised of six parts,namely upper and lower incoming and outgoing cable chambers,upper and lower double-layer circuit breaker chambers,busbar chamber and relay chamber.There are overhead incoming and outgoing lines,incoming and outgoing cables and right &left contact information.An inspection window is arranged on the door and pressure relief vent on the top. Reliable mechanical interlock can ensure a safe and convenient operation.Degree of protection of the"five-pro- tection"short-circuit chamber door is IP2X when it is opened.This switch unit can be equipped with vacuum cir- cuit breaker trolley,voltage transformer trolley and lightning arrester trolley.

Applicable standards:GB3906-2006,GB/T11022-1999,IEC298(1990)and DL/T404-97

SND escriptions			Units	Technical Parameters
1	Rated voltage		KV	12
2	Rated insulation level	Power frequency withstand voltage(1min)	KV	Between phases,phase toearth		Primary isolating distance
				42		48
		Lightning impulse withstand voltage		75		85
3	Rated short-time withstand current(4s)		KA	20	25	31.5	40
4	Rated short-circuit breaking current(effective value)		KA	20	25	31.5	40
5	Rated short-circuit making current(peak value)		KA	506380100
6	Rated feeder line current		A	630-3150
7	Rated busbar current		A	630-3150
8	Degree of protection			IP4X
9	Overall dimensions(W/D/H		mm	800(1000)/1500(1660)/2300

KYN61-40.5 metal armored movable-type switch units can meet the  IEC-298 A.C  Metal-Enclosed Switchgear and Controlgear for  Rated Voltage(1990),IEC-694 Common Clauses for  High-Voltage Switchgear and Controlgear  Standards,GB3906-2006   Alternating-current   Metal-enclosed    Switchgear   and    Controlgear   for   Rated   Voltages  above  3.6kV  and  up  to  and  including  40.5,GB50171-91  Code  for  Construction  and  Acceptance  of  Switchboard  Outfit  Complete  Cubicle  and  Secondary  Circuit  Electric  Machines  Electric  Equipment  Installation  Engineering  (ef-  fective  since  July   1,1993),GBJ147-90  Specifications  for  Construction  and  Acceptance  of  High  Voltage   Electric  Equipment  Installation  Engineering,GBJ149-90  Erection  Works   of  Electrical  Installations  Code  for   Construction  and  Acceptance   of  Bus-bar  Device  and  other  relevant  regulations.It  is  featured   by  beautiful  appearance,firm  structure,simple  element  arrangement,big  electric  clearance,large  creepage  distance  and  insulated  busbar.It  can  also  meet  the  requirements  of"five  protection"put  forward  by  the  Department  of  Water  and  Power,work  safely  and reliably and is easy for repair.

ltem	Unit	Values
		ZN48A/B-24 switch equipped	ZN48A/B-40.5 switch equipped	SF1/SF2 switch equipped
Rated voltge	KV	24	35
Rated current	A	630,1250,1600,2000,2500	630,1250,1600,2000,2500	630,1250,2500
Rated rerquency	HZ	50	50	50
Rated short-circuit breaking current	KA	20,25,31,5,40	20,25,31,5	25,31,5,40
Rated short-circuit making current	KA	50,63,80,100	50,63,80	63,80,5,40
Rated short-time withstand current	KA/S	20,25,31,5,40,/4s	20,25,31,5,/4s	25,31,5.40/3s
Rated peak withstand current	KA	50,63,80,100	50,63,80	63,80,100
1min power frequeney with standvoltage	KV	85	95	70(95)
lightning impulse with standvoltage	KV	125	185	170(185)
Degree of protection			IP4X

Main Production

Company Profile

ABOUT US

Xuzhou Zhongtie Electric Group Co., Ltd. was established in 1992 with the investment of the former Railway Bureau. It has three subsidiary companies under its umbrella, with assets amounting to hundreds of millions of yuan. These subsidiaries are located in Xuzhou National Economic and Technological Development Zone and Jianye District, Nanjing.
The group features strong technical capabilities and first-class products. It serves as a leading enterprise in the electrical industry, a national key high-tech enterprise, and a core supplier to both the State Grid and China Southern Power Grid. Equipped with advanced production and testing facilities, it mainly engages in the production of complete electrical products such as 35KV ring main units.
The company holds qualifications like the second-level professional contracting qualification for power transmission and transformation projects. Its business scope encompasses power engineering survey and design, project construction, and new energy services. Its sales network extends to more than twenty provinces, municipalities, and autonomous regions. The products are applied in various fields including the State Grid, and the company has participated in major grid renovation projects. It has been honored with titles such as the National Customer Satisfaction Enterprise.
Upholding the tenet of "Surpassing Ourselves, Striving for Excellence, Passing on Light, and Serving Society", the group aims to meet customers' needs. It is eager to collaborate with all sectors of society and move forward together towards a brighter future.

Product Advantage

Company Advantage &Our Certificate

Exhibition

Packaging & Shipping

FAQ

Q1. Can I get a sample?  
Yes, absolutely. We understand the importance of evaluating product quality and performance before purchasing transformers, so we are happy to provide samples for your comprehensive testing and trial use. This allows you to deeply understand the advantages and features of our products. Please note that samples are provided at a prototyping cost lower than the production cost, and specific details can be discussed further.  

 Q2. Can I use my own logo or design on the product?  
Certainly. We offer professional OEM/ODM customization services, supporting end-to-end customization from product appearance design to performance parameters. Whether you need to incorporate your brand logo or unique design concepts, we can precisely implement them to create transformers that meet your brand positioning and ensure reliable quality.  
Q3. Do you have a factory?  
Yes, we have a modern professional transformer production base in Jiangsu. The factory covers an area of 60,000 square meters, equipped with industry-leading production equipment, advanced processing technologies, and a standardized quality control system. We sincerely invite you to visit our factory to inspect the production process, quality control standards, and R&D capabilities, and experience the core competitiveness of a professional manufacturer firsthand. We have provided high-quality OEM/ODM services to global clients for many years, helping them achieve differentiated market positioning. 

Q4. What is your factory's production capacity?  
The factory has efficient and stable mass-production capabilities. Taking conventional power transformers as an example:  
Monthly output: 300 units of 10kV standard-capacity power transformers;  
Monthly output: 200 units of 35kV power transformers.  
We continuously optimize production processes, upgrade equipment, and innovate technologies to flexibly respond to diverse market demands and ensure delivery efficiency.  
Q5. When will the goods be delivered?  
Conventional in-stock products: Shipped within 3 working days after order confirmation;  
Customized products: Produced and shipped within 10-20 working days agreed upon based on customization complexity.  
Additionally, we collaborate with multiple premium logistics partners to provide real-time tracking services, ensuring goods are delivered safely and on time.