1. The measuring box is made of steel plate stamping, and the box door has an observation hole. For single-phase meter boxes and three-phase meter boxes without switches, customers connect the cables to the wiring bus directly, and each unit user is wired from the meter directly.
2. For the single-phase meter box with single-phase switch, the user connects the cable to the wiring bus directly, connects the wire from the outlet end of the switch to the unit user, and seal the lead sealing line after installation and debugging.
3. Can inlet and outlet dp and down, the switch room is equipped with three-phase wiring bus and protective grounding bus, which is convenient for power supply of single-phase two-wire, single-phase three-wire, three-phase four-wire and three-phase five-wire.
4. The box is equipped with lead sealing screw, and can make a wire partition to separate the switch from the meter according to customer requirements
|
NO.
|
Item
|
Unit
|
Data
|
|
1
|
Rated operational voltage
|
V
|
380/220
|
|
2
|
Rated insulation voltage
|
V
|
400
|
|
3
|
Rated
frequency
|
Hz
|
50/60
|
|
4
|
Rated current of main bus
|
A
|
400A～10A
|
|
5
|
rated short-time withstand current of main bus
|
kA/1s
|
6
|
|
6
|
IP grade
|
Use in indoor
|
/
|
IP30
|
|
Operative surface
|
/
|
IP20C
|
Distribution box should be installed in a clean, dry and well-ventilated environment.
1. Surrounding air temperature: the highest temperature is 40℃, and the average value measured within 24 hours does not exceed 35℃, and the lowest temperature is -5℃.
2. Relative humidity of the surrounding air: when the maximum temperature is +40℃, it shall not exceed 50%; when the temperature is lower, it is allowed to have a large relative humidity. The influence of condensation may occasionally occur due to the change of temperature should be considered.
3. Altitude: ≤ 2000m.
4. Conditions of transportation, storage and placement: temperature range from -25℃ to +55℃, up to +70℃ in a short time (not exceeding 24 hours).The inclination of the equipment during installation shall not exceed 3º.
5. The installation site shall be free from fire, explosion, serious pollution, chemical corrosion and violent vibration.
6. The working conditions of instruments, measuring instruments, protective relays, etc. shall be in accordance with the requirements of the component supplier.
Note: if the actual conditions of use cannot be met, it shall negotiate with the manufacturer.
Q: Are you the low voltage metering box 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 low voltage metering box?
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 low voltage metering box agents?
A: Yes, we welcome you to be a partner. Welcome to contact us for more information.
