| Serial number |
Project |
Bus duct |
Cable |
Branch cables |
| 1 |
Short-term investment cost |
30 to 40 percent more than a cable and 15 to 20 percent more than a single cable |
30 to 40 percent less than busbars |
15 to 20 percent less than the busbar |
| 2 |
Long-term investment cost |
50% to 60% less than cables and 60 to 70 percent less than single cables |
50 to 60 percent higher than busbars |
60 to 70 percent higher than the busbar |
| 3 |
Depreciation rate/per year |
2% |
5-8% |
5-8% |
| 4 |
Maintenance status |
It is easy to maintain and its performance is the same as that of a new product after maintenance |
Difficult to repair, performance drops after repair |
Difficult to repair, performance drops after repair |
| 5 |
Service life |
50 years |
15-20 years |
15-20 years |
| 6 |
Insulation performance |
20 mΩ or greater |
5 mΩ or higher |
5 mΩ or higher |
| 7 |
Retrofit loss rate |
10-20% |
70 ~ 80% |
70 ~ 80% |
| 8 |
Occupied space |
In the |
less |
big |
| 9 |
Current-carrying capacity |
Large, up to 5000A, suitable for all kinds of places |
Small, up to 1600A, with a small selection range |
Small, maximum 1600A. Select Range Small |
| 10 |
Product maintenance |
There is no need to disconnect the main power supply. The branch circuits can be repaired live without affecting the power supply of other circuits |
No live maintenance is allowed. The main power supply must be disconnected, and the power outage area is large |
Do not carry out maintenance with power on. The main power supply must be disconnected and the power outage area is large |
| 11 |
Mechanical strength |
High mechanical strength, strong protective ability, suitable for large-span installation |
It has low mechanical strength and requires additional cable trays for use |
Low mechanical strength, poor protective ability |
| 12 |
Shape and volume |
It has an attractive appearance, and the color can be selected according to the on-site requirements. It is small in size, compact in structure and neatly laid out. |
Cable trays are bulky and lack aesthetic appeal |
Monochromatic and bulky, lacking aesthetic appeal |
| 13 |
Current branching |
Multiple sockets can be reserved. When adding branch circuits, simply insert the socket box without disconnecting the power supply. Installation is convenient and quick |
Adding connectors is cumbersome and requires disconnection of the main power supply and cables |
Special equipment needs to be added and live work is not allowed |
| 14 |
Overload capacity |
Insulating material operates at temperatures above 130° C, has strong overload capacity and good heat dissipation |
The insulating layer and outer skin have a maximum operating temperature of 105° C and poor overload capacity |
The maximum operating temperature of the insulation layer and outer skin is 105° C, and the overload capacity is poor |
| 15 |
Flame retardant capacity |
The shell is made of steel plate or aluminium alloy and does not burn. The insulating material is flame-retardant and heat-resistant, effectively preventing fires. |
The insulation and sheath of ordinary cables can burn, and flame-retardant cables will also burn in the flame. |
The insulation and sheath of ordinary cables can burn, and so can flame-retardant cables. |
| 16 |
Installation and Use |
It is easy to install and disassemble, and can be rearranged as needed. The branch circuits can be modified when the main circuit is live, without affecting the overall power supply. |
Low reusability if the layout needs to be changed. No live branch work is possible |
Low reusability if layout changes are required. No live branch work is possible |
| 17 |
Swap backups |
When the system fails, it can be used as an emergency backup. The use of the backup circuit to connect the box can quickly restore power supply and improve the stability of the system power supply. |
In case of an accident, power should be cut off for maintenance and power cannot be restored in time |
An accident requires power outage for maintenance and power cannot be restored in time |
