1. Material of cabinet body: 2 mm aluminum zinc plate.
2. Including side expansion, top expansion two types.
3. Internal arc duration of 630A/20kV is 1S.
4. With load switch (C), load switch + fuse combination (F), circuit breaker (V) and other standard units. Achieve a diverse set of units, to meet the complex and diverse power supply and distribution designs in different areas. SF6 ring main unit widely used in urban commercial centers, high-rise buildings, underground substations, industrial concentration areas, airports, highways and other ring or radiation power supply systems, can also be used for terminal power supply, installed in box-type substation, outdoor box-type switch station(outdoor ring cabinet) and other devices.
5. The outer material of the ring cabinet can be configured according to user's requirement.
|
NO.
|
Item
|
Unit
|
Data
|
|
Load switch
|
Combination unit
|
Breaker
|
|
1
|
Rated Voltage
|
kV
|
12
|
|
2
|
Rated
frequency
|
Hz
|
50/60
|
|
3
|
Rated current
|
A
|
630
|
125
|
630
|
|
4
|
1 min Power frequency withstand voltage
|
Phase to earth and phase to phase
|
kV
|
42
|
|
Isolating
distance
|
48
|
|
5
|
Lightning impulse withstand voltage
|
Phase to earth and phase to phase
|
kV
|
75
|
|
Isolating distance
|
85
|
|
6
|
Thermal stable current (effective value)
|
Main circuit 4S
|
kA
|
20
|
|
Earthing
switch 2S
|
|
Earth circuit 4S
|
17.4
|
|
7
|
Dynamic stable current (peak)
|
Main circuit 4S
|
kA
|
50
|
|
Earthing
switch 2S
|
|
Earth circuit 4S
|
43.5
|
|
8
|
Rated short-circuit making current（peak）
|
kA
|
50
|
|
9
|
Rated breaking current of active load
|
A
|
630
|
|
|
|
10
|
Rated closed-loop breaking current
|
A
|
630
|
|
|
|
11
|
5% Rated breaking current of active load
|
A
|
31.5
|
|
|
|
12
|
Rated
cable-charging breaking current
|
A
|
10
|
|
|
|
13
|
Rated short-circuit breaking current
|
kA
|
|
31.5
|
20
|
|
14
|
Rated transfer
current
|
A
|
|
1750
|
|
|
15
|
Mechanical life
|
times
|
5000
|
5000
|
10000
|
|
16
|
SF6 rated
pressure（20℃ gauge pressure)
|
Mpa
|
0.3
|
|
17
|
SF6 leakage rate
|
year
|
≤0.05%
|
|
18
|
IP grade
|
|
gas tank IP67
|
|
19
|
Arc test
|
|
20kA/1s
|
1. Altitude: ≤4000m (the equipment is fully insulated and sealed, applicable to high altitude areas.When the equipment is running at an altitude higher than 1000m, please make special note for pressure adjustment during manufacturing).
2. Surrounding temperature: -25 ~ +40℃ (the highest average daily temperature does not exceed 35℃).
3. Relative humidity: daily average is no more than 95%, and monthly average is no more than 90%.
4. Wind speed: no more than 35m/s.
5. Earthquake intensity: 8 degrees
6. Pollution level: level 2
7. Installation site: Without fire, explosion or violent vibration, well-ventilated and non-corrosive gas.
8. Ground slope: no more than 3°.
Note: If the use environment exceeds the above scope.Please contact us.
Q: Are you the SF6 ring main unit 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 SF6 ring main unit 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 SF6 ring main unit, 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.
