Outdoor live tank 1000A long life 31.5 KA HV 72.5 kv circuit breaker

FOB Reference Price:Get Latest Price
$15,000.00 - $20,000.00 / Set | 1 Set/Sets (Min. Order)
Lead Time:
Quantity(Sets) 1 - 10 11 - 50 >50
Est. Time(days) 45 65 Negotiable
Customized logo (Min. Order: 1 Sets)
Customized packaging (Min. Order: 1 Sets)


Graphic customization (Min. Order: 1 Sets) Less
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Quick Details
Place of Origin:
Beijing, China
Brand Name:
Model Number:
High Voltage
Poles Number:
Product name:
Outdoor live tank 1000A long life 31.5 KA HV 72.5 kv circuit breaker
Rated voltage:
72.5 kv
Rated current:
Opening time:
Closing time:
Mechanical Duration:
10000 times
Creepage distance::
Breaking Capacity:
Supply Ability
Supply Ability:
70 Set/Sets per Month Outdoor live tank 1000A long life 31.5 KA HV 72.5 kv circuit br
Packaging & Delivery
Packaging Details
Wood case or according to client's requests
Outdoor live tank 1000A long life 31.5 KA HV 72.5 kv circuit breaker
Any port in China
Lead Time :
Quantity(Sets) 1 - 10 11 - 50 >50
Est. Time(days) 45 65 To be negotiated
Video Description

Outdoor live tank 1000A long life 31.5 KA  HV 72.5 kv circuit breaker


Live Tank CB

H.V. A.C.porcelain type SF6 gas circuit breakers, with voltage 72.5KV and rated current up to 1250A.

Three kinds of operating mechanism, pneumatic, spring and hydraulic type can be customized. Motor is used in spring mechanism to charge closing spring and charge opening spring at closing. Disk spring is used in hydraulic mechanism to be charged instead of traditional compressed nitrogen gas for charge, and hydraulic driving is used at both opening and closing.

Compressed air is used in pneumatic mechanism as driven force for open while spring is used for close. The three kinds of operating mechanisms have their own features and are used in circuit breakers of different voltage class respectively. Due to the unit structure in circuit breaker, there are advantages of minimized number of breaks, lower number of parts, simple structure, high reliability and long period of inspection.


Service Conditions


Humidity monthly:≤90%
Max .wind velocity:≤35m/s
Pollution class:Ⅲclass,IV class
Ambient air temperature:-35℃~40℃(It’s satisfied under condition of -40℃ in heavy cold area)
Max .temperature difference daily: 25K
Earthquake withstand density:9 degree
Ice coating: ≤20mm
Max. radiance from sun: 1000 W/m2
Note: When product is used under the condition out of above range, user and manufacturer shall consult to confirm.


Technical data


The Specifications of LW9-72.5
1Maximum VoltageKV72.5
2Rated CurrentA1250A
3Rated FrequencyHZ50
4Rated Short-circuit Withstand Current(4s)KA31.5
5Rated Short-circuit DurationS3
6Rated Short-circuit Breaking CurrentShort-circuit CurrentKA31.5
DC Shunt-44%
7Rated Short-circuit Making Current(peak)KA80
8Rated Break Withstand Current(peak)KA80
9Short-line Fault Breaking CurrentKAle*90% le*75%
10Rated Out-of-phase Breaking CurrentKAle*25%
11Rated Charging Line Breaking CurrentA31.5
12Rated Insulating Level1 min P.F withstand voltageAcross open contactsKV200
Phase to phase160
Phase to earth160
Lightening impulse withstand voltage(peak)Across open contacts385
Phase to phase350
Phase to earth350
5 min zero-pressure withstand voltage test(virtual value)Across open contacts95
Phase to phase95
13First Pole to Clear Factor-1.5
14Rated Operate Sequence-O-0.3S-CO-180S-CO;        CO-15S-CO
15Full BreakingMS≤60
16SF6 Gas Rated Pressure(20°C)Mpa0.5
17Alarming Pressure0.5
18Locking Pressure0.5
19Terminal Static Pulling PowerLevel lengthwaysN1250
Level transverse750
20Fixed Opening TimeRated VoltageMS30±3
21Closing TimeMS75±8
22Closing&Opening TimePrimary opening timeMS30
OC Time280~300
Closing Time30
CO Time≤60
Second opening time35
23Control Circuit VoltageVAC/DC,110/220
24CO Loop VoltageVAC/DC,110/220
25CO Loop CurrentA2
26Motor VoltageVAC/DC,110/220
28Heater VoltageVAC220
29Mechanical DurationTimes10,000
30Radio Interrupting VoltageuV≤500
31Electrical Life of Rated Short-circuit Breaking CurrentTimes20
32Protection Grade of Enclosure-IP4X
33Creepage DistanceMM2248
NOTE: If there is any question or problem does not comply with your local standards, feel free to contact us.
Plant equipment DTCB

Our partner is a large-scale manufacturer of circuit breaker electric equipment. During first Five-Year-Plan it has become an important base for developing and manufacturing in China after many years of development.





The products involving power networks have been put into operation everywhere in China and also exported to many foreign countries and regions. The Company has decades of experience of manufacture. The products are stable in performance, reliable in quality, advanced in technology. The performances of products reach  advanced international standars, as demostrating by the obtaining of International Certificates.





Our services CB

Quality and excellence in services 


A good brand must be supported by good products, but good products must be supported by an excellent service. 

We provide customers with product information support from product purchasing information to other business support services. Technical support is available for a complete series of products, including product consulting, type selection & replacement, simple application & installation, and FAQ.








International power projects display




To know more about our product range, please click the link below:

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Packaging & Shipping

Our packing experts will work with you and your product’s specifications, and provide solutions for packaging options to ensure safe transport and delivery.

Packaging:Wooden case, container or according to client's requirements

Shipping:Land transportation and Ocean transportation


The standard procedure for making wooden case is as follows:

♦ Receipt of information required for the type of goods to be wood barrel customers.

♦ Measure and create original designs for customers.

♦ Select the type of wood suitable for the requirements of the goods.

♦ Determine the delivery time.

♦ Check the wood barrel technique.

♦ Handover confirmation.




Our products have been shipped all around the world, with an extensive logistic network, we provide the best transportation option for our clients.






International standards


Our products meet the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest IEC and ANSI standards.



Company Information
 Beijing Daelim Green EP Tech Co., Ltd.
Welcome to Daelim
We are engaged in the import & export of electric equipment. Our business team  has  more  than  15 years'  foreign  business  experience,   and  also  has  a unique  understanding  of electrical  products and overseas markets. We have established and extended business relationships with customers and partners in Southeast Asia, the Middle East, Europe, Africa, North America and South America.

The main products and equipment we are dealing with: power transformer, current transformer, potential transformer, vacuum & SF6 circuit breaker, load break switch, disconnector, switchgear panel, power plant, transmission line equipment.

We provide competitive prices, high quality products, timely shipment and efficient services to develop our cooperation with all of  our customers. We trade in accordance with international traditions and practices. Our mision is to keep improving our products through continuous service innovation and continuous integration of high-quality domestic resources for our customers  and partners.
Our team
Company Team

To face the challenges and opportunities of the development of economic globalization, our Beijing Daelim team aims to:

1.To "provide first-class technology, high-quality products and fine service that meets the client satisfaction" as objective.

2.With "good faith cooperation, realize clients ideal" as own duty.

3.To "become a long-term reliable business partner" as goal.



Transaction records

During our 15 years experience in the industry, we have collaborate in many tradeshows, stablishing a network of experts and engineering technicians from large and medium-sized firms.We get price in maintaining long-lasting relationship with many agents in the field. We have exported to more than 30 countries.



Contact information


Please feel free to contact me for further information.