Indoor custom low-voltage three-phase power distribution system/distribution box

The XL low-voltage distribution box is suitable for power users such as power plants, substations, industrial and mining enterprises, and highway tunnels. As a power supply system with AC 50Hz-60Hz, rated working voltage 380V, rated working current up to 630A, and breaking capacity up to 15kA, it provides power conversion, distr

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The XL low-voltage distribution box is suitable for power users such as power plants, substations, industrial and mining enterprises, and highway tunnels. As a power supply system with AC 50Hz-60Hz, rated working voltage 380V, rated working current up to 630A, and breaking capacity up to 15kA, it provides power conversion, distribution and control for power distribution equipment such as power, lighting and fans. Can provide overload, short circuit and leakage protection.

Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box
 


Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box
NO.ItemUnitData
1Rated operational voltage(V)AC 380(400) 
2Rated insulation voltage(V)660(690) 
3Rated frequency(Hz)Hz 50(60) 
4Horizontal bus rated current(A)≤630 
5Main bus rated short-time withstand currentkA/1s 15
6Bus rated peak withstand currentkA 30
7BusThree-phase four-wire system\A,B,C,PEN 
Three-phase five-wire system\A,B,C,PE,N 
8IP gradeuse in indoor\IP30 
use in outdoor\IP65


Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box
1. Indoor box structure (protection grade IP30)
The distribution box frame is made of cold-rolled steel plate by bending and welding. After spraying process, it has good anti-corrosion performance. The internal installation beams and installation boards are made of aluminum-zinc coated or cold-rolled steel plates for galvanizing passivation. Single-sided foam glue is attached to the inner edge of the door to prevent direct collision between the door and the box body, and also improve the protection level of the door. Both the bottom plate and the top plate of the box can be reserved for cable knock-out holes to facilitate cable entry and exit. The side can be equipped with heat dissipation holes or open heat dissipation windows according to user requirements to distribute internal gas and moisture. The cabinet can be installed on the floor, wall or embedded according to user requirements. The floor-mounted distribution box is equipped with lifting lugs on the top and on both sides of the box for lifting and installation. The bottom plate of the box body is equipped with mounting holes or the foot plates on both sides of the box bottom are installed on the ground. The wall-mounted distribution boxes and embedded distribution boxes are equipped with lifting lugs at suitable positions on the bottom and both sides of the rear top of the box for lifting and installation. The door can be opened with single door or double door for easy maintenance and installation.

2. Outdoor box structure (protection grade IP65)
The distribution box frame is made of stainless steel plates by bending and welding. After outdoor spraying process, it has good anti-corrosion performance. The internal installation beams and installation boards are made of aluminum-zinc coated or cold-rolled steel plates for galvanizing passivation. Single-sided foam glue is attached to the inner edge of the door to prevent direct collision between the door and the box body, and also improve the protection level of the door. If there are secondary components on the panel, a double door structure is adopted. The outer door is a glass door, and the secondary components are installed on the inner door. The operating status of the equipment can be observed without opening the outer door. Cable knock-out holes are reserved on the bottom of the box to facilitate cable entry and exit. The side can be equipped with heat dissipation holes or open heat dissipation windows according to user requirements. The top is equipped with a rain-proof top cover, and the front lower part of the top cover has a heat dissipation hole to dissipate internal gas and moisture. The floor-mounted distribution box is equipped with lifting lugs at suitable positions on the top and both sides of the back of the box for lifting and installation. The bottom plate of the box body is equipped with mounting holes or the foot plates on both sides of the box bottom are installed on the ground. The wall-mounted distribution box is equipped with lifting lugs at the bottom of the rear top of the box and at suitable positions on both sides for lifting and installation. The door can be opened with single door or double door for easy maintenance and installation.

3. Busbar system
The main busbar is supported by insulating supports. The insulating support is made of high-strength, high-flame retardant PPO alloy material, with high insulation strength and good self-extinguishing performance. The box is equipped with an independent PE protective grounding system and N neutral conductor. The neutral bus bar and the protective grounding bus bar are installed in parallel in the lower part of the box, and there are holes on the PE and N rows. The protective grounding or neutral cables of each circuit can be connected nearby. If the N wire and the PE wire are separated by an insulator, the N wire and the PE wire are used separately. If in a three-phase four-wire system, the neutral bus and the protective grounding bus share the same bus (PEN line).

4.  Protective grounding system
Grounding copper blocks are welded on the frame outside and inside the box, which can be connected to the grounding bus inside and outside the box respectively. Ground bolts are welded behind the door and connected to the frame with copper wires. The installation beams in the box and the frame are connected by bolts to ensure the grounding continuity of the entire distribution box.

5. Wire entry and exit method
The cable or pipeline entry and exit method is adopted, and the box is equipped with a clamp for fixing the cable.


Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box



Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box
Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box

Our high and low voltage switchgear adopts the international advanced level of switchgear shell sheet metal processing cutting, punching, bending CNC equipment, shell vertical cabinet automation tooling, a complete set of CNC processing equipment for copper bars, and the introduction of COMAU welding robots from Italy. The main products are 0.4KV~40.5KV various types of high and low voltage switchgear cabinets. The high voltage switch cabinets include removable and fixed types. The low voltage switch cabinets include MNST, GCS, GCK, GGD, etc. All products have passed the inspection and test.

Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box




Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box
Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box


FAQ


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:

  1.  30% advance payment via T/T as a deposit, balance 70% against the shipping documents
  2.  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.
  1. 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
  2. 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.

Indoor Customized Low Voltage 3 Phase Distribution System/Distribution Box
 

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