This circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or equipped with a special propulsion mechanism to form a handcart unit.
① The pole body of the circuit breaker adopts A-pole compound rubber, which can play a very good anti-fouling and sealing effect, and its wear resistance is stronger than ordinary materials.
② Plum-style copper contacts are less prone to rust and damage, and have a long service life.
③ Install metal wheels for easy movement and better installation efficiency.
④ Vacuum arc extinguishing chamber, with strong arc extinguishing insulation, long life, small size and stable safety performance.
|
No.
|
Item
|
Unit
|
Parameter
|
|
1
|
Rated voltage
|
kV
|
12
|
|
2
|
Rated insulation level
|
Power frequency withstand voltage (1 min)
|
KA
|
On the ground/interphase 42/48
|
|
Lightning impulse withstand voltage (peak value)
|
On the ground/interphase 75/85
|
|
3
|
Rated frequency
|
Hz
|
50
|
|
4
|
Rated current
|
A
|
630
|
630
|
1250
|
1600
|
1250
|
1600
|
|
5
|
Rated short-circuit breaking current
|
kA
|
20
|
25
|
31.5
|
31.5
|
40
|
40
|
|
6
|
Rated short-time withstand current (effective value)
|
kA
|
20
|
25
|
31.5
|
40
|
40
|
40
|
|
7
|
Rated withstand current (peak value)
|
kA
|
50
|
63
|
80
|
100
|
100
|
100
|
|
8
|
Rated short-circuit making current (peak value)
|
kA
|
60
|
63
|
80
|
100
|
100
|
100
|
|
9
|
Rated short-circuit current duration
|
S
|
4
|
|
10
|
Mechanical life
|
Times
|
20000
|
|
11
|
1min power frequency withstand voltage of secondary circuit
|
V
|
2000
|
Outside Shape & Size
1. Altitude: less than 1000m.
2. Surrounding air temperature: upper
limit +40 ° C, lower limit -25 ° C (alpine region) and -1 ° C (general region).
3. Relative humidity of surrounding air:
when the maximum temperature is +40℃,
it is not more than 50%. When the temperature is low, it is allowed to have a
large relative humidity. Due to the change of temperature, it may occasionally
has condensation effect.
4. Outdoor wind speed shall not exceed
34m/s.
5. The slope of the ground shall not
exceed 3°.
6. The horizontal acceleration of the
earthquake shall not more than 0.4m/s, and the vertical acceleration shall not morn
than 0.2m/s;
7. The installation site shall be free
from fire, explosion, serious pollution, chemical corrosion and violent
vibration.
Note: if the actual conditions of use
cannot be met, please negotiation with the manufacturer.
Q: Are you the manufacturer or trader?
A: We are both manufacturer & trader. We have our own manufacturer named TIANYI TONGYI ELECTRIC CO.,LTD, who have 27 years experience in electric industry. It covers an totally area of 117,000 m2 with 300 employees, also is a qualified supplier of China National Nuclear Corporation(CNNC) and main supplier for State Grid & China Southern Power Grid.
Q: What is your after-sales service?
A: We always provide free online service and technical support within 24 hours. 18 months warranty for customers.
Q: What is your delivery time?
A: Normally 25~35days. It depends on the order quantity and season. We have very strong capacity to produce top quality products, please inquiry us if you have any questions.
Q: What is the quality warranty time?
A: We have quality certificate CCC, CQC, ISO9001, CE ... Meanwhile, we can provide 18 months warranty for our products. Free online service and technical support within 24 hours is always provided to our customers.
Q: Do you accept ODM and OEM?
A: Yes. We have professional R & D teams to update and develop the latest technology. We also can support ODM or OEM, please send us details drawing to discuss.
Q: What is your payment terms?
A: Generally there are two payment terms:
a) 30% advance payment via T/T as a deposit, balance 70% against the shipping documents
b) Irrevocable L/C at sight
Q: If I want to visit you, how to go?
A: Our factory is located in Luoyuan County, Fuzhou City. Details address is Songshan Area, Taiwan Investment Zone, Luoyuan County, Fuzhou City, Fujian Province,China.
a) The nearest airport is Fuzhou Airport, if you come by air, please arrive in Fuzhou Airport, it takes 1 hour from the airport to our factory
b) The nearest train station is Luoyuan Station, if you come by train, please arrive in Luoyuan Station, it takes only 5 minutes to our factory.
Anyway, please contact us in advance, we will send the car to the airport or train station to pick you up.Sincerely welcome you to come and visit us.
Q: Do you need agents?
A: Yes, we welcome you to be a partner. Welcome to contact us for more information.
