High Voltage Electrical Equipment 252kv Sf6 Gas Insulated Switchgear (GIS)

• Customization: Available
• Certification: CCC
• Shell Material: Stainless Steel
• Model NO.: 252kV
• Installation: Fixed
• Structure: Floorstanding
• Current: DC
• Rated Voltage: 252kv
• Rated Current: 2000A-4000A
• Rated Frequency: 50Hz
• Customization: Acceptable
• Language: Chinese, English, Russian
• Loading Port: It Depends
• Transport Package: Wooden Case or Others
• Specification: Designed According to Supplier Specifications
• Trademark: HZEC
• Origin: China
• Production Capacity: 3000sets/Year

Product Description

Company Profile

Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.

Product Description

The 252 kV GIS used 50Hz 220kV three phases current of power system. Live conductors of this product are contained in a sealed metal container and filled with SF6 gas as insulating and 

interrupting medium. Modular design according to main connection requirements of substation can assemble 

different kinds of structures. This equipment include circuit breaker, disconnector, maintenance or fault earthing switch,

current transformer, voltage transformer, lighting arrester, busbar and inlet/outlet BSG or cable end box, bellows, local control panel etc, components.

 

 

Service Environment

1. Indoor/outdoor ;
2. Ambient air temperature :-30ºC~+40ºC;
3. Altitude: does not exceed 1000m;
4. Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%;
5. The magnitude of the earthquake was no more than 8 degrees;
6. No fire, explosion, serious pollution, chemical corrosion and violent vibration.
7. Wind speed: no more than 35m/s.

Product Parameters

No.	Item				Unit	Data
1	Nominal system voltage				KV	220
2	Rated voltage					252
3	Rated current				A	2000,2500,3150,4000
4	Rated frequency				Hz	50
5	Rated peak withstand current				KA	100,125
6	Rated short-time withstand current					40,50
7	Rated lightning impulse withstand voltage				KV	1050
8	Rated power frequency withstand voltage					460
9	Gas pressure (20ºC)				MPa	circuit  breaker 0.6/others 0.4
10	Annual leakage rate of SF6 gas				%	≤0.5
11	Circuit breaker
	First-pole-to-clear factor					1.5
	Rated short-circuit breaking current				KA	40,50
	Rated cycle of operation					O-0.3s-CO-180s-CO
	Type of operating mechanism					Hydraulic
	Control voltage					DC110/220
12	Disconnector
	Operating mechanism					Motor, motor-spring
	Control voltage				V	DC220/110
13	Fault making earthing switch
	Rated making current (peak)				kV	100,125
	Control voltage				kA	DC220/110
	Type of operating mechanism				V	Motor-driven spring
14	Earthing switch for maintenance
	Type of operating mechanism					Motor
	Control voltage				V	DC220/110
15	Bus
	Nominal system voltage				KV	220
	Rated voltage				KV	252
	Rated current				A	2000, 2500, 3150, 4000
	Rated short-time withstand current (3s)				KA	40, 50
	Type of enclosure					Three-phase encapsulated/single-phase encapsulated
	Material of enclosure					AL alloy
	Material of conductor					AL
16	Voltage transformer
	Rated primary voltage				KV	220/√3
	Rated secondary voltage				V	100/√3
	Voltage of remaining voltage winding				V	100
17	Current Transformer
	Nominal system voltage				KV	220
	Rated voltage				KV	252
	Rated primary current				A	4000, 3150
	Rated secondary current				A	1, 5
	Capacity				VA	15, 20, 25, 30, 40
18	Lightning arrester
	Technical parameters					According to IEC 60099-1 "MOA"

Main Features

1. Small unit size, light weight, excellent anti-seismic performance;
2. Reliable conductivity;
3. High reliability of insulation;
4. Excellent SF6 gas systems and sealing technology;
5. High breaking capacity;
6. Satisfying the needs of smart grid;
7. Use of standardized, modular design and production.

Structure working principle

The GIS is featured by three-pole-in-one enclosure (except incoming line bushing and and outgoing line bushing). The main components include the Circuit Breaker(CB), three-position Disconnector/ Earthing Switch(DES), Fault-making Earthing Switch, Current Transformer(CT), Voltage Transformer(VT), Lightning Arrestor(LA), incoming/outgoing components( Gas-Air Bushing(BSG), Cable Sealing End(CSE), Oil-Gas Bushing (Oil-Gas BSG), Busbar (BUS)(includes main busbar and branch busbar), Local Control Panel (LCP), etc. All bays can be arranged with the standard components. In power circuit, the conductors for CB are arranged in shape of "straight line", the conductors of other components are arranged in the shape of"regular triangle" in the enclosure. Spring contact is used between conductors for transitting connection.

Certifications