Full Metal Enclosed Ring Main Unit

Model: XGN□-24KV

CNKEEYA, a reputable manufacturer, proudly presents the Full Metal Enclosed Ring Main Unit, blending advanced technology with cost-effective solutions. We prioritize delivering high-quality products at competitive prices, ensuring that our Full Metal Enclosed Ring Main Units stand out as reliable and affordable solutions. Partner with CNKEEYA to access top-notch manufacturing expertise, cost-effectiveness, and excellence in the realm of fully metal-enclosed ring main units. Trust us for innovative solutions that meet your needs while staying within your budget.

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Product Description

CNKEEYA, a leading manufacturer, proudly presents the Full Metal Enclosed Ring Main Unit, combining cutting-edge technology with a commitment to cost-effectiveness. Our dedication to providing high-quality products is matched by our focus on delivering competitive prices. CNKEEYA stands as a trusted source for cost-efficient solutions in the domain of full metal enclosed ring main units. Partner with us to access top-tier products that prioritize both quality and affordability.

Increase the capacity of main transformer and improve the power supply capacity of substation.

Improve the power transmission capacity of distribution lines and reduce the number of distribution lines.

Increase the power supply radius of medium voltage lines.

Improve the power supply quality of medium voltage power grid.

Reduce the power loss of medium voltage power grid.

Save nonferrous metals and land resources.

Model and meaning

Service condition

● Altitude: ≤1000m

Ambient temperature: maximum ambient temperature +40℃, minimum ambient temperature -35℃,maximum daily temperature difference 25℃;

● Relative humidity: daily average relative humidity ≤95%, monthly average relative humidity ≤90%;

● Seismic intensity: 8 degree;

Rated frequency of system: 50HZ;

Annual leakage rate of SF6: ≤0.1%;

Enclosure protection grade: IP3X;

● Note: when ordering this product beyond the above conditions, please consult with our company.

Executive standard

● GB/T156 Standard voltages

● GB 311.1 Insulation co-ordination-Part 1:Definitions,principles and rules;

● GB 38043.6kV~40.5kV High-voltage alternating current switches for rated voltage above 3.6kV and less than 40.5kV GB 3906 Alternating-current metal-enclosed switchgear and control gear for rated voltages above 3.6kV and up to and including 40.5kV;

● GB/T 11022 Common specifications for high-voltage switchgear and control gear standards;

● GB/T 12,022 Sulfur hexafluoride for industrial use;

● GB16926 High-voltage alternating current switch-fuse combinations;

● DL/T 404 Indoor AC high voltage switchgear panel Fully metal enclosed ring main unit

Technical parameter

No.	Name		Unit	Load switch cabinet	Switch-fuse combination cabinet
1	Rated voltage		kV	24
2	Rated frequency		Hz	50
3	Rated current		A	630	125
4	Rated load breaking current		A	630	125
5	Rated short-time withstand current (effective)(3s)		kA	20
6	Rated peak withstand current		kA	50
7	Closed loop breaking current		A	630
8	Maximum transfer current		A		31.5
9	Prospective short-circuit breaking current of fuse(effective)		kA		1400
10	2s short time withstand current of grounding switch		kA	20
11	Rated current breaking times		Time	≥100
12	Mechanical life	Load switch		≥2000
		Grounding switch		≥2000
13	Annual leakage rate of SF6 gas	Annual leakage rate of SF6 gas	%	≤0.1
14	Rated short-time power frequency withstand voltage(effective)	Across isolating distance	kV	64(79)
		Switch opening distance	kV	64(79)
		Phase to phase, phase to ground	kV	50(65)
	rated lightning impulse withstand voltage (peak)	Across isolating distance	kV	110(145)
		Switch opening distance	kV	110(145)
		Phase to phase, phase to ground	kV	95(125)
15	Temperature rise limit		K	According to GB/T11022
16	Operating mechanism			Manual, or electric plus manual
17	Operating voltage		V	recommended DC110, optional DC24 or DC48 AC220
18	Creepage distance of insulating parts in cabinet		mm/kV	≥20(24kV)220(calculated as per24kV)
19	Enclosure protection grade			IP3X
20	Clear air distance of bare conductor(phase to ground and phase to phase)		mm	≥180
21	Rated cable charging breaking current		A	25
22	Switching inductance current of no-load transformer		A	0~15A
23	Opening and closing asynchrony		ms	<5
24	Main circuit resistance (excluding fuse)		μΩ	<140

Note:The rated current of the switch-fuse combination is used for the complete combined apparatus of the load switch and the selected fuse.The data outside the brackets refer to the neutral point grounding system through low resistance,and the data inside the brackets refer to the neutral point grounding or ungrounded system through arc suppression coil.

Fully metal enclosed ring main unit

Outline size

Outline diagram of incoming (outgoing)line cabinet

Purpose of switch cabinet	Cabinet width(mm)	Cabinet depth(mm)	Cabinet height(mm)
Incoming cabinet	750	1020	1900
Outgoing cabinet	500	1020	1900
cabinet	500	1020	1900
Bus couple cabinet	500	1020	1900
Vice bus couple cabinet	500	1020	1900
Bus transition cabinet	500	1020	1900
Metering cabinet	1120	1020	1900

Note:

1.The nominal depth of the switch cabinet includes all the outer edges of the door panel (excluding the convex elements, locks, pins, and the convex parts of the door panel)

2.The nominal height of the switch cabinet,including all the outer edges of the head (excluding convex rings)

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Contact Info

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Address

No. 68, Wei No.19 Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province,China
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Tel
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E-mail

queenie@cnkeeya.com

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