1. With a fully enclosed structure, all one-time charged bodies are sealed in the same insulated air chamber welded from stainless steel, high Reliability and personal safety，with IP67 protection.
2. Effective protection, remote control, metering and monitoring of circuits, and support the automation of power distribution systems.
3. Achieve distribution line loss collection and management.
4. Solve the compatibility and extensibility of primary and secondary interfaces.
5. Improve the standardization and integration level of primary and secondary power distribution equipment
6. Improve the operation level, operation and maintenance quality and efficiency of distribution equipment.
Box type switchgear can be installed in humid, dust pollution areas, especially suitable for mines, box substation and any place where surface flashes are easily caused by air pollution. Widely used in industrial and civil ring network and terminal power supply.
|
NO.
|
Item
|
Type of ring main unit
|
|
Breaker cabinet
|
Load switch cabinet
|
Combination unit cabinet
|
|
1
|
Rated Voltage
|
12kV
|
12kV
|
12kV
|
|
2
|
Rated frequency
|
50/60 Hz
|
50/60 Hz
|
50/60 Hz
|
|
3
|
Rated current
|
630A
|
630A
|
120A
|
|
4
|
Rated short-time power frequency withstand voltage
|
Phase to phase、to earth（1min）
|
42 kV
|
42 kV
|
42 kV
|
|
Isolating distance（1min）
|
48 kV
|
48 kV
|
48 kV
|
|
Secondary circuit to earth（1min）
|
2 kV
|
2 kV
|
2 kV
|
|
5
|
Rated lightning impulse withstand voltage
|
Phase to phase、to earth（1min）
|
75 kV
|
75 kV
|
75 kV
|
|
Isolating distance（1min）
|
85 kV
|
85 kV
|
85 kV
|
|
6
|
Main circuit resistance
|
≤140μΩ
|
≤150μΩ
|
≤450μΩ
|
|
7
|
Rated peak withstand current
|
|
50kA
|
|
|
8
|
Rated short-circuit making current（peak）
|
63kA
|
50kA
|
|
|
9
|
Remote control function, remote communication function,
telemetry function
|
Have
|
Have
|
Have
|
1. Altitude: ≤ 4000m (the equipment is fully insulated and sealed, can be used in high-altitude areas. When the equipment operates at high altitude above 1000m, please make special note so that we can adjust the pressure during manufacturing).
2. Surrounding temperature: -25 ~ +40℃ (the highest average daily temperature does not exceed 35℃).
3. Relative humidity: the daily average is no more than 95% and the monthly average is no more than 90%.
4. Wind speed: no more than 35m/s.
5. Earthquake intensity: 8 degrees.
6. the pollution level: 3 level.
7. Installation site: It shall be installed in a place without fire, explosion or violent vibration, good ventilation and corrosive gas.
8. Ground slope: no more than 3°.
Note: The working environment conditions are different from the above, please consult with the manufacturer.
Q: Are you the box type switchgear 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 box type switchgear?
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.
