Page 25 - YINGMING POWER(HIGH & LOW VOLTAGE SWITCHGEARS)

GGD
LOW-VOLTAGE
SWITCHGEAR YINGMING POWER
Structural features

◆ The cabinet of GGD AC low-voltage power distribution cabinet adopts the form of a general cabinet. The frame is assembled by 8MF cold-formed
steel through local welding. The frame parts and special supporting parts are supplied by the fixed-point steel factory to ensure the Precision and
quality. The parts of the general cabinet are designed according to the module principle, and there are 20-mode mounting holes. The high general
coefficient can enable the factory to achieve pre-production, which not only shortens the production cycle, but also improves work efficiency.
◆ GGD cabinet design fully considers the heat dissipation during cabinet operation. There are different numbers of heat dissipation slots on the upper
and lower ends of the cabinet. When the electrical components in the cabinet heat up, the hot air rises and is discharged through the upper slot, and
the cold wind is continuously added into the cabinet from the lower slot to make the sealed cabinet self A natural ventilation channel is formed from the
bottom up to achieve the purpose of heat dissipation.
◆ According to the requirements of modern industrial product design, GGD cabinet adopts the method of golden ratio to design the cabinet shape and
the partition size of each part, so that the whole cabinet is beautiful and new.
The cabinet door is connected to the frame with a rotating hinge, which is convenient for installation and disassembly. The mountain's folding edge
is embedded with a mountain-shaped rubber and plastic strip. When the door is closed, the embedded strip between the door and the frame has a
certain compression stroke to prevent the door and the cabinet. The direct collision of the body also improves the protection level of the door.
◆ The instrument door equipped with electrical components is connected to the frame with multiple strands of soft copper wire, and the installation
parts in the cabinet are connected with the frame by knurled screws. The entire cabinet constitutes a complete grounding protection system.
◆ The cabinet body paint is made of polyester orange-shaped baking paint, which has strong adhesion and good texture. The whole cabinet is matte to
avoid dazzling effects and creates a more comfortable visual environment for the staff on duty.
◆ The top cover of the cabinet can be removed when needed to facilitate the assembly and adjustment of the main busbar on site. The four corners of
the top of the cabinet are equipped with lifting rings for lifting and shipping.
◆ The protection level of the cabinet is IP30, users can also choose between IP20-IP40 according to the requirements of the use environment.

Main technical data

Rated current Rated short circuit breaking Rated short time withstand Rated peak withstand
Type Rated voltage(V)
(A) current(kA) current(1s)(kA) current(kA)
A 1000
GGD1 380 B 600(630) 15 15 30
C 400
A 1500(1600)

GGD2 380 B 1000 30 30 63
C 600
A 3150
GGD3 380 B 2500 50 50 105
C 2000

Main circuit scheme
GGD cabinet of the main circuit designed 129 programs, a total of 298 specifications (not including the auxiliary circuit changes in the function and
control voltage changes derived from the program and specifications);
among them:
GGD1 type 49 program 123 specifications
GGD2 type 53 program 107 specifications
GGD3 type 27 program 68 specifications
The main circuit program is to seek the majority of the design, the use of departmental comments selected, an increase of power plants need the
program. Rated current to 3150A, suitable for 2000kVA and below the distribution transformer selection. In addition, in order to meet the needs of
reactive power compensation designed GGJ1, GGJ2 capacitor compensation cabinet, the main circuit program 4, a total of 12 specifications.

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