13.8KV MV HV Air Insulated Switchgear

LiuGao is a dedicated 13.8KV MV HV Air Insulated Switchgear manufacturer, presenting the XGN66-12 Medium Voltage AC switchgear. Specifically designed for the 3.6kV-35kV three-phase AC 50/60Hz system, this fixed-type metal-enclosed switchgear facilitates the efficient reception and distribution of power energy. Trust LiuGao for reliable and cutting-edge solutions in high voltage switchgear, ensuring optimal performance in a range of voltage applications.

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Product Description

Liugao proudly stands as a premier high voltage switchgear supplier, introducing the XGN66-12 fixed-type closed switchgear as the epitome of cutting-edge technology. Our commitment to excellence is reflected in this advanced switchgear, designed to meet the highest standards of reliability and performance in high voltage applications. Trust Liugao for innovative solutions that set the benchmark in the realm of high voltage switchgear. This new generation high-voltage electrical product aligns seamlessly with national standards, including GB3906 and Electric Department's DLT404, while also meeting the stringent international standard IEC62271 for AC metal-enclosed switchgear and control equipment ranging from 1KV to 52KV.

This switchgear sets a new standard with its compact design, taking up only 50% of the space compared to conventional switchgear. The circuit breaker, a key component, boasts exceptional reliability and performance, featuring a robust "five anti" interlocking mechanism known for its reliability and simplicity.

Designed for indoor use in 3.6kV, 7.2kV, and 12kV three-phase AC 50Hz single bus segments, this switchgear facilitates the seamless acceptance and distribution of electrical energy. Its multifunctional capabilities, encompassing circuit control, protection, and monitoring, render it versatile for deployment in diverse settings such as power plants, substations, industrial and mining enterprises, high-rise buildings, and even in ring network cabinets with ring main units.

The commitment to adhering to both national and international standards underscores Liugao's dedication to providing a reliable, high-performance, and technologically advanced solution in the realm of high voltage switchgear.

13.8KV MV HV Air Insulated Switchgear Operating Environment

1. Use the maximum temperature does not exceed 40 degrees, the minimum Not more than -25 degrees

2. Relative humidity: daily average of not more than 95%, the monthly average of no more than 90% of the altitude does not exceed 1000m (over time can consult the manufacturer)

3. No fire, explosion, heavy pollution, chemical corrosion and severe Shock sites.

13.8KV MV HV Air Insulated Switchgear Characteristics

The cubicle, an assembled structure with no welding, showcases high mechanical strength and an artistic appearance, making it an ideal solution for high voltage switchgear.

The rear upper part is dedicated to the GN30-12 rotary disconnect switch, while the lower part accommodates the GN19-12C disconnect switch. The mechanical interlock device, operated following specified procedures, ensures reliable safety protection for both personnel and equipment within the high voltage switchgear.

The main switch utilized is a monoblock type, providing options such as ZN63-12 (VS1-12) and VD4-12, enhancing the versatility and functionality of the high voltage switchgear.

Employing a compulsory mechanical locking method in the interlocks among main switches, disconnectors, and cubicle doors, the system meets the 'five-proof' interlock function. This feature allows for random combinations with the ring main unit, ensuring enhanced flexibility and safety in the operation of the high voltage switchgear.

13.8KV MV HV Air Insulated Switchgear Specification

Switchgear's main technical parameters and component models

No.	Item	Unit	Technical parameters
1	Rated voltage	KV	3.6,7.2,12
2	Rated power frequency withstand voltage	KV	the ground,the same: 42; fracture: 45
3	Rated lightning impulse withstand voltage	KV	the ground, the same: 75; fracture:85
4	Rate frequency	Hz	50
5	Rated current	A	6,301,250
6	Rated short circuit breaking current(peak)	KV	20,25,31.5
7	Rated short circuit closing current (peak)	KV	50,63,80.
8	Rated dynamic stable current (peak)	KV	50,63,80
9	Lightning electric stable current 4S(RMS)	KV	20,25,31.5
10	Protection class	聽	1P2X
11	Dimensions (W 脳 D脳 H)	mm	900X1000X2300
12	Weight	Kg	-600

Main technical parameters of ZN63-12type vacuum circuit breaker

No.	Item	Unit	Technical parameters
1	Rated voltage	KV	12
2	Rated current	A	6,301,250
3	Rated short circuit breaking current	KV	20,25,31.5
4	Rated short circuit closing current	KA	50,63,80
5	Rated short-time withstand current(4S effective value)	KA	20.25,31.5
6	Rated peak withstand current (peak)	KA	50,63,80
7	Mechanicallife	Time	10000
8	Rated short-time breaking current breaking times	Time	50
9	Rated operating sequence		o-0.3s-c O-180s-C o
10	Contact head distance	mm	11±1
11	Contact contact stroke	mm	4±0.5
12	Interphase center distance	mm	210
13	Opening speed	m/s	1.2±0.2
14	Closing speed	m/s	0.6±0.2
15	Opening time	ms	≤60
16	Closing time	ms	≤75
17	Three - phase opening synchronization	ms	≤2
18	Closing bounce	ms	≤2
19	Loop resistance	µΩ	≤45
20	Accumulated allowable wear thickness of contact head	mm	3