GGD AC Low Voltage Power Distribution Cabinet
Product Model
Electrical Performance
△Basic Technical Parameters
|
Model |
Rated Voltage(V) |
Rated Current(A) |
Rated Short-circuit Breaking Current (kA) |
Rated Short-circuit Breaking Current (kA) |
Rated Peak Withstand Current (kA) |
|
GGD1 |
380 |
A 1000 |
15 |
15 |
30 |
|
B 600(330) |
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|
C 400 |
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|
GGD2 |
380 |
A 1500(1600) |
30 |
30 |
63 |
|
B 1000 |
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|
C |
|||||
|
GGD3 |
380 |
A 3200 |
50 |
50 |
105 |
|
B 2500 |
|||||
|
C 2000 |
△Main Circuit Scheme
The main circuit of the GGD cabinet is designed with 129 schemes, totaling 298 specifications (excluding the schemes and specifications derived from the functional changes of the auxiliary circuit and the control voltage).
The GGD type has 49 schemes and 123 specifications.
The GGD2 type has 53 schemes and 107 specifications.
The GGD3 type has 27 schemes and 68 specifications.
The main circuit scheme is selected after seeking the opinions of the design and user departments. The schemes have been expanded to meet the needs of power plants, with the rated current increased to 3150A, suitable for the selection of distribution transformers of 2000kVA and below.
In addition, to meet the needs of reactive power compensation, GGJ1 and GGJ2 capacitor compensation cabinets have been designed, with 4 main circuit schemes and a total of 12 specifications.
△Auxiliary Circuit Scheme
The auxiliary circuit includes the metering supply scheme and the power plant scheme. There is sufficient space inside the GGD cabinet to install secondary components, and NLS has also developed the dedicated LMZ3D AC current transformer to meet the needs of power plants and special users for relay protection.
Main Busbar
Considering the price ratio and the feasibility of replacing copper with aluminum, a single aluminum busbar is used when the rated current is 1500A or below. When the rated current exceeds 1500A, double copper busbars are used. The manufacturer shall produce prototypes and pass type tests in accordance with this requirement. Of course, the manufacturer can also replace the aluminum busbar with an equivalent copper busbar according to the user's requirements.
The busbar joint surface is treated with tinning process.
Schematic Diagram of the Appearance
Installation Schematic Diagram
|
Product Code |
A |
B |
C |
D |
|
TGDD 06 |
600 |
600 |
450 |
556 |
|
TGDD 06A |
600 |
800 |
450 |
756 |
|
TGDD 08 |
800 |
600 |
650 |
556 |
|
TGDD 08A |
800 |
800 |
650 |
756 |
|
TGDD 10 |
1000 |
600 |
850 |
556 |
|
TGDD 10A |
1000 |
800 |
850 |
756 |
|
TGDD 12 |
1200 |
800 |
1050 |
756 |
Product Functions
◆Designed for AC 50Hz power distribution systems with a rated working voltage of 380V and current up to 3150A (5000A max).
◆Performs energy conversion, distribution, and control for power, lighting, and other distribution equipment.
◆Suitable for use in power plants, substations, and industrial & mining enterprises.
Applicable Environment
◇Ambient air temperature: -5℃ to +40℃ (24-hour average ≤ +35℃).
◇Installation altitude: ≤ 2000m.
◇Relative humidity: ≤ 50% at 40℃, allowing higher levels (e.g., 90%) at lower temperatures (e.g., 20℃).
◇Installation tilt: ≤ 5° from vertical.
◇Location should be indoors, with minimal vibration, impact, and corrosive substances.
Product Highlights
◆High Performance: Features high breaking capacity and excellent dynamic & thermal stability.
◆Flexible & Practical: Offers flexible electrical schemes and convenient assembly for strong practicality.
◆Robust Design: Innovative structure with a high protection level.
◆Standards Compliant: Meets IEC439 and GB7251 standards for low-voltage switchgear assemblies.
◆Modern Upgrade: Serves as a reliable upgraded product for existing low-voltage distribution equipment.