What are the differences between XL-21, GGD, and GCK distribution cabinets?
Release time:
2021-09-30
Common cabinet types in electrical engineering include XL-21, GGD, GCK, GCK, MNS, etc. All types of cabinets belong to distribution cabinets. Below, we will analyze the differences between each distribution cabinet and other cabinet types one by one.
1、 XL-21
The "XL" series, in addition to XL-21 (referred to as 21 cabinets), also includes XL-20 (20 cabinets), XL-28 (28 cabinets), and so on. The difference between them is the voltage inside the cabinet. Taking 21 cabinets as an example, the voltage often does not exceed 500V.
The "XL" series is called a power cabinet and can actually be seen as a large distribution box, often used in terminal circuits.
The difference between it and other cabinet types also means that it is a large distribution box due to the following reasons:
The main busbar is not fixed;
The isolation knife switch is opened forward;
Responsible only for the lower end load and only for load maintenance.
2、 GGD
GGD, also known as fixed switchgear. The appearance of GGD (after closing the cabinet door) is very similar to that of cabinet 21, with clear differences from GCK, GCS, and MNS - GGD has a cabinet door, while the latter three do not.
GGD, GCK, GCS, and MNS have several similarities, which are the differences between them and distribution cabinets such as 21 cabinets:
Installed at the inlet of the low-voltage side of the transformer;
Fixed main busbar;
Responsible for all distribution boxes and cabinets at the lower end.
Apart from appearance, the differences between GGD and the latter three cabinet types are as follows:
GGD is a form of cabinet connection, which is connected internally after opening the cabinet door;
Low cost, few internal circuits, only suitable for small distribution rooms;
Unable to connect to the computer.
3、 GCK, GCS, MNS
Putting these three together is because they have a common name - withdrawable switchgear, abbreviated as drawer cabinet. As the name suggests, among these cabinet types, there is no cabinet door and a unique drawer like structure, which looks more similar to a household chest of drawers.
The characteristics of the drawer cabinet will not be repeated. Among the characteristics of the 21 cabinets and GGD mentioned above, the things that are not mentioned are combined to form a drawer cabinet. In addition, the biggest feature of the drawer cabinet is that when repairing the circuit, if something in the drawer is damaged, it can be removed and replaced separately, without affecting the normal use of other drawers., This reduces maintenance costs significantly (without delaying production during maintenance). Below is a separate explanation of the characteristics of each cabinet type for drawer cabinets.
MNS
Putting it at the forefront is because the MNS cabinet has the highest technical level and was introduced as an advanced cabinet type from ABB back then. The characteristics are as follows (compared to the other two cabinet types):
Strong breaking ability;
High thermal stability;
The vertical wiring block is three-phase four wire;
Minimum drawer unit 1/4 module (each layer can hold 4 drawers).
1、 XL-21
The "XL" series, in addition to XL-21 (referred to as 21 cabinets), also includes XL-20 (20 cabinets), XL-28 (28 cabinets), and so on. The difference between them is the voltage inside the cabinet. Taking 21 cabinets as an example, the voltage often does not exceed 500V.
The "XL" series is called a power cabinet and can actually be seen as a large distribution box, often used in terminal circuits.
The difference between it and other cabinet types also means that it is a large distribution box due to the following reasons:
The main busbar is not fixed;
The isolation knife switch is opened forward;
Responsible only for the lower end load and only for load maintenance.
2、 GGD
GGD, also known as fixed switchgear. The appearance of GGD (after closing the cabinet door) is very similar to that of cabinet 21, with clear differences from GCK, GCS, and MNS - GGD has a cabinet door, while the latter three do not.
GGD, GCK, GCS, and MNS have several similarities, which are the differences between them and distribution cabinets such as 21 cabinets:
Installed at the inlet of the low-voltage side of the transformer;
Fixed main busbar;
Responsible for all distribution boxes and cabinets at the lower end.
Apart from appearance, the differences between GGD and the latter three cabinet types are as follows:
GGD is a form of cabinet connection, which is connected internally after opening the cabinet door;
Low cost, few internal circuits, only suitable for small distribution rooms;
Unable to connect to the computer.
3、 GCK, GCS, MNS
Putting these three together is because they have a common name - withdrawable switchgear, abbreviated as drawer cabinet. As the name suggests, among these cabinet types, there is no cabinet door and a unique drawer like structure, which looks more similar to a household chest of drawers.
The characteristics of the drawer cabinet will not be repeated. Among the characteristics of the 21 cabinets and GGD mentioned above, the things that are not mentioned are combined to form a drawer cabinet. In addition, the biggest feature of the drawer cabinet is that when repairing the circuit, if something in the drawer is damaged, it can be removed and replaced separately, without affecting the normal use of other drawers., This reduces maintenance costs significantly (without delaying production during maintenance). Below is a separate explanation of the characteristics of each cabinet type for drawer cabinets.
MNS
Putting it at the forefront is because the MNS cabinet has the highest technical level and was introduced as an advanced cabinet type from ABB back then. The characteristics are as follows (compared to the other two cabinet types):
Strong breaking ability;
High thermal stability;
The vertical wiring block is three-phase four wire;
Minimum drawer unit 1/4 module (each layer can hold 4 drawers).
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