22kV Medium Voltage Switchgear/ Air Insulated Metal Clad Switchgear

Supplier: Hunan Electric Union Corp.
Region: Hunan, China
Contact: Mr Alan Chueng
Price: $8000.00 /unit
Min. Order: 1 unit

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Product details

Type:	Air insulated;	Warranty:	18 Months;
Brand Name:	SafeGear;	Port:	shanghai;
Rated Current:	630-4000A;	Packaging Detail:	Seaworthy packing/wooden case;
Supply Ability:	200 Unit/Units per Month;	Payment Terms:	L/C,T/T,Western Union;
Frequency:	50/60Hz;	Protection Level:	IP4X;
Installation:	Indoor;	Model Number:	KYN28-22;
Insulation:	95kV/38kV;	Place of Origin:	China;
Rated Voltage:	22kV;	Standard:	IEC62271;
Breaking capacity:	25-50kA;

22kV Medium Voltage Switchgear/ Air Insulated Metal Clad Switchgear

Standards

The switchgear and main apparatus contained in it comply with the latest IEC Standards:
• IEC 62271-1 for general purposes
• IEC 62271-200 for the switchgear
• IEC 62271-102 for the earthing switch
• IEC 62271-100 for the circuit-breakers
• IEC 60071-2 for the insulation coordination
• IEC 62271-106 for the contactors
• IEC 60265-1 for the switch-disconnectors
• IEC 60529 for degree of protections

Service environment:
a) Air temperature:Maximum temperature: +40℃; Minimum temperature:-25℃

b) Humidity:Monthly average humidity 95%; Daily average humidity 90% .

c) Altitude above sea level:Maximum installation altitude: 2500m

d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

e) No frequent violent shake

Technical data

Rated voltage	kV	22
Rated insulation voltage	kV	24
Rated power frequency withstand voltage	kV 1min	38
Rated lightning impulse withstand voltage	kV	95
Rated frequency	Hz	50/60
Rated short time withstand current	kA 3 s	up to 50
Peak current	kA	up to 125
Internal arc withstand current	kA 1s	up to 50
Main busbar rated current	A	up to 4000
Circuit-breaker rated current	A	630 1250 1600 2000 2500 3150
Circuit-breaker rated current with forced ventilation	A	3600 4000

Vaccum Circuit Breaker

Description	Unit	Value
Rated voltage	kV	22
Rated short-time power frequency withstand voltage (1min)(1min)		38
Rated lightning impulse withstand voltage (peak)		95
Rated freq	Hz	50,60
Rated current	A	630	630	1250	1600	1250	1600	1600	2000
		1250	1250	2000	2500	2000	2500	2500	3150
				3150		3150	4000*	4000*
Rated short-circuit drop-out current	kA	20	25	31.5		40		50
Rated short time withstand current		20	25	31.5		40		50
Rated short time continual time	s	4
Rated peak withstand current	kA	50	63	80		100		125
Rated short-circuit closing current		50	63	80		100		125
Rated single/ back-to-back capacitor bank drop-out current	A	630/400(40kA is 800/400)
Rated capacitor bank closing inrush current	kA	12.5(frequency no more than 1000Hz)
Opening time (rated volt.)	ms	20~50
Closing time (rated volt.)		35~70
Mechanical life	Times	30,000
Rated break times for rated short drop out current		50
Rated operation voltage	V	AC110/220 DC110/220
Rated current of power storing motor	W	70
Average opening speed	m/s	0.9~1.3
Average closing speed		0.4~0.8
Rated operation procedure		opening-0.3s-closing opening-180s-closing opening

Fully type-tested

The switchgear has undergone all the tests required by the international (IEC) Standards. Each switchgear unit is subjected to routine tests in the factory before delivery. These tests are intended to provide a functional check of the switchgear based on the specific characteristics of each installation.

IEC type tests
• Short-time and peak withstand current
• Temperature rise
• Internal arc capability
• Dielectric test
• Making and breaking capacity of circuit-breaker
• Earthing switch making capacity (top application)
• Mechanical operations of circuit-breaker and line
disconnector
• IP degree and impact test

IEC routine factory tests
• Visual inspection and check
• Mechanical sequence operations
• Cabling check
• Electrical sequence operations
• Power frequency withstand voltage
• Measurement of the resistance of the main circuits
• Secondary insulation test

The enclosure is made of aluminium-zinc plated steel sheet by CNC machine, high precise dimension, short production cycle, excellent mechanical strength and nice appearance. The busbar compartment, VCB handc art compartment, cable compartment and relay compartment are separated by metal sheet. Flexible operation for handcart movement, clear position instruction, the earthing switch allow to making short circuit current and creditable mechanical interlock.

It fit with many kinds of vacuum circuit breaker such as ABB VD4, Schneider HVX, Siemens 3AE, and China VS1 ,and can also select fixed load breaker switch or vacuum contactor. And protective relay is also selectable:

Vacuum Circuit Breaker & Protection relay:

Glances in workshop:

Why choose us

Hunan Electric Union is a diverse electric equipment manufacturer group located in middle south of China.

Limit Innovation

We are in a traditional business since transformers and switches are developed over hundred years, even the so called “new technologies” of cast resin technology, vacuum arc distinguish technology and digital
protection technology have been used for decades.
Based on industry characteristics and to focus on products manufacturing itself, we implement a “limit innovation” policy on our mature products

1. Update products only if latest standards revision officially issued
2. Produce new products only if related technology are maturely developed.
3. Focus limit innovation on external updates to make products easy to use and transport.

Our Mission

After several decades of reform and opening, the development of China's electric power has made great progress, the manufacturing industries have gradually entered a world-class level, and many well-known international companies have chosen to set up factories in China.
At the same time, we realized that many developing countries' power infrastructures are still very poor,so our mission is to provide the most cost effectiveproducts to world, and these products are transformed to meet relevant international
standards (IEC and IEEE) based on widely used and proven reliable products in China in recent thirty years.

Eventually, we could help the developing regions to update their energy quality and improve people’s life.

Products
1. Oil Filled Transformer 6-252kV

2. Gas insulated switchgear (GIS) 72.5-252kV
3. Cast Resin Dry Transformer 6-36kV
4. Pad Mounted Transformer 4.16-46kV
5. SF6 Filled Ring main Unit 6-36kV
6. MV Switchgear 4.16-36kV
6. LV Switchboard 110-690V
7. SF6 Circuit Breaker 36-252kV
8. Disconnecting Switch 36-1100kV
9. PT and CT 6-252kV
10. Soft Starter 0.4-15kV

11. Compact Substation

Services
1. Project Consulting
2. Cost Estimation
3. Bidding Prepare

Products Features
We defined four rules to estimate our products,
1. Standards: All products should comply with IEC or IEEE standard codes.
2. Requirements: All products should comply with technical agreement from end user.
3. Easy to Use: All products should tested in factory and deliver with full, readable drawings and manuals.
4. Fit to Container: All products should designed to load on a container.

Certificates