Joongwon Electric Corporation

Medium Voltage SF6 Gas Insulated Load Break

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Medium Voltage SF6 Gas Insulated Load Break

Dear Sir/Madam

As we are a large group company, one of the leading manufacturer, innovator,
exporter and supplier and since established in 1962,
we have been produced the medium voltage electric equipment, i.e. the SF6Gas
Insulated Load Break Switches (configuration), Cut Out Switches, Auto Section
Switch, Auto Section Switch - Indoor Type, Gas Insulated Load Break Switch,
Load Break Switch, Interrupter Switch and Vacuum Circuit Breaker and Metering
Out Fit, PT, GPT and SURGE ABSORBER(S/A), Lightning Arrester(L/A),
Various Fuse and PHOTO ETCHING PROCESS etc.,

and our products have been inspected one by one by our quality control department
before shipment

and all goods have been produced to meet for the international standard(ANSI,
IEC) and customer's requirements

and most of products have the certification of ISO 9001 & ISO 14001 etc.,

The result of a accumulated knowhow and high technology with the cutting edge
advanced machine, we have enjoyed the good reputation from home and abroad
customers and we have exported our products all over the world as well as delivery
to the KEPCO.(Korea Authority Electric Power Public Corporation)

If you are interested in our products or any more requirements, please
don't hesitate to contact us or please visit our web site.

With truly yours,
J.J. Park
JOONGWON ELECTRIC CORPORATION
No. 727-9, WONSI-DONG, DANWON-GU, ANSAN-CITY, KYUNGGI-PROVINCE,
SOUTH KOREA
TEL No.: 82-31-4911131/4
FAX No.: 82-31-4952620
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<Electricity>

Type 4Wx4S Auto type 4Wx4S Manual type 3Wx3S Auto type
Rated Voltage 25.8kV
Rated Continuous Current 600A
Current Switching Capacity 100% Load-Current Capacity 60Hz
Excitation Current Capacity 21A
Cable Charging Current Switching Capacity 25A
Line Charging Current Switching Capacity 1.5A
Loop-Current Switching Capacity 600A
Rated Short-time Making Current 12.5kA(r.m.s)
Rated Short-circuit Making Current 32.5kA(peak)
Rated Power Frequency Withstand Voltage 60kV
Rated DC Withstand Voltage 78kV / 15 min
Rated Lightening Impulse Withstand Voltage 125kV
Inside Pressure
(at 20°C) Minimum 0.25kg/��
Maximum 0.5kg/��
Operation Method Auto / Manual operation Auto operation Manual operation
Insulation Material SF6Gas
Weight 550kg 500kg 400kg
Applied Standards ES 151-143
Korea Electric Power Corporation recognition standards ES 151-165
Korea Electric Power Corporation recognition standards ES 151-145
Korea Electric Power Corporation recognition standards




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