Gas Insulated Metal-Enclosed Switchgear High Voltage 72.5kv for Substation

• Customization: Available
• Certification: CCC
• Shell Material: Stainless Steel
• Model NO.: 72.5KV
• Voltage Level: High Voltage
• Installation: Fixed
• Structure: Floorstanding
• Current: DC
• Rated Voltage: 72.5kv
• Rated Current: 1250A-3150A
• Rated Frequency: 50Hz
• 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

New generation of GIS which is equipped with spring operated

mechanism was developed in 1998. Its arc extinguishing chamber adopts the semi-self energized interrupting principle, adapting gas blast pressure to GIS's breaking current.

 

In 2001, ZF23-126 type GIS equipped with a complete spring operated mechanism was developed, using dual gas chambers to extinguish the arc by way of self -energization.

In 2005, the equipment passed all required type tests and the national-level appraisals.

 

 

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	Rated voltage				KV	72.5
2	Rated current				A	1250,1600,2000,3150
3	Rated frequency				Hz	50
4	Rated peak withstand current				KA	100
5	Rated short-time withstand current					40
6	Rated lightning impulse withstand voltage				KV	325
7	Rated power frequency withstand voltage					140
8	Gas pressure (20ºC)				MPa	circuit  breaker 0.6/others 0.5
9	Annual leakage rate of SF6 gas				%	≤0.5
10	Moisture content of gas compartment			Circuit breaker	uL/L voltage ratio	≤150
				Other components		≤250
11	Circuit breaker
	Operating mechanism					Spring mechanism
	Rated short-circuit breaking current				KA	40
	Rated cycle of operation					O-0.3s-CO-180s-CO
12	Disconnector
	Operating mechanism					Manual and motor operated; 3-pole mechanically group operated
	Switching ability of breaking and making busbar current			Switching current	A	1600
				Conversion voltage	V	10
				Breaking time	Time	100
13	Fault making earthing switch
	Rated making current (peak)				kV	100
	Rated short-time withstand current (4s)				kA	40
	Type of operating mechanism					Manual, motor-driven spring; 3-pole mechanically group operated
14	Earthing switch for maintenance
	Rated short-time withstand current (4s)				kA	40
15	Voltage transformer
	Technical parameters					As per requirements of customers
16	Current Transformer
	Technical parameters					As per requirements of customers
17	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