Use
G GGD AC low-voltage power distribution equipment for power plants, substations, industrial enterprises and other power users of AC 50Hz, rated working voltage 380V, rated current up to 3150A of the distribution system, as power, lighting and power distribution equipment, power conversion , distribution and control purposes.
GGD type AC low voltage distribution cabinet G flow is based on the higher charge of the Department of Energy and the majority of electricity users and the requirements of the design department, in a safe, economical, reasonable and reliable design principles of new low-voltage distribution cabinet. Products with high breaking capacity, dynamic thermal stability, electrical program flexible combination of convenience, family, practical, novel structure, high level of protection, can be used as low-voltage switchgear equipment replacement product.
GGD type AC low voltage distribution cabinet meet G flow IEC 349 "Low-voltage switchgear and control equipment", GB 2751 "Low-voltage switchgear equipment" and other standards.
Conditions of Use
◆ The ambient air temperature is not higher than + 40 ℃, not lower than -5 ℃, the average temperature within 24h shall not exceed + 35 ℃;
◆ households within the installation, place of use shall not exceed altitude 2000m;
◆ ambient air relative humidity at the highest temperature is + 40 ℃ not more than 50%, should be permitted at lower temperatures greater relative temperature (for example, at + 20 ℃ 90%) taking into account changes in temperature may occasionally impact of condensation;
◆ equipment installation and the vertical gradient of not more than 5 °;
◆ equipment should be installed in the absence of severe vibration and impact areas and not enough to make electrical components are corrosion sites;
Can be resolved through consultation with the manufacturer ◆ When you have special requirements.
Model and meaning
Electrical Performance
Basic electrical parameters
Main circuit
GGD cabinet main circuit design 129 program, a total of 298 specifications (excluding changes in functional changes and the control voltage of the auxiliary circuit and derive solutions and specifications).
Where: GGD1 Type 49 program 123 Specifications
GGD2 Type 53 program 107 Specifications
GGD3 Type 27 program 68 specifications
The main circuit program is designed to seek the majority views of a selection of user departments, increasing the plant needs solutions. Rated current up to 3150A, for distribution transformer 2000kVA and the following selection. In addition, to meet the needs of reactive power compensation designed GGJ 1, GGJ2 capacitance compensation cabinet, whose main circuit 4, a total of 12 specifications.
Auxiliary circuit program
Auxiliary circuit design solutions and power plants for electricity sub-program into two parts, GGD cabinet has enough space to install the secondary component, and also developed a special LMZ3D type current transformer and power plants to meet specific user attached to the relay when needed protection.
The main bus
Considering the price ratio and to the feasibility of aluminum and copper, the rated current 1500A and below can be a single row of aluminum busbar, rated current dual copper busbar greater than 1500A, prototype manufacturing plant this provision by type testing, of course, the plant can also be based on the user's requirements will be replaced by an equivalent aluminum bus carrying capacity of copper bus bar. Lap surface lining of tin are used bus Process.
Electrical component selection
(1) .GGD cabinet mainly domestic production has been able to more advanced electrical components, but also based on economic rationality, under the premise of fully consider the feasibility of retaining some of the old products are available as DZ10D, DZ20, etc. do not use obsolete products.
(2) .HD13BX and HS13BX operated rotary knife switch is dedicated components to meet the unique needs of GGD cabinet structure and design, it has changed the way organizations operate, retains the advantages of the old product, is a utility model electrical components.
(3) When such design department based on user needs, the choice of better performance, more technologically advanced new electrical components, due to the installation of GGD cabinet has good flexibility, usually does not cause difficulties in the manufacture and installation of electrical components due updater .
(4) In order to further improve the ability of the dynamic stability of the main circuit, the design of GGD cabinet dedicated ZMJ type modular busbar clamp and insulation support. Bus clip from high-strength, high alloy materials PPO flame retardant thermoplastic molding, high dielectric strength, good self-extinguishing properties, unique structure, simply adjust the inter-block building blocks can be easily combined into a single bus or dual bus clip clip, the insulating support is molded sleeve structure, low cost, high strength, to solve the old creepage distance is not enough product defects.
Structural features
(1) .GGD AC low-voltage distribution cabinet cabinet in the form of universal cabinet, cold-formed steel frame with 8MF assembled by local welding, frame parts, spare parts and special steel sentinel plants by matching supply to ensure the accuracy and quality of the cabinet. General principles of cabinet components by module design and mounting holes 20 die. Common factor, allows the plant to achieve pre-production, which shortens the production cycle, but also improve work efficiency.
(2) .GGD cabinet designed to take full account of the cabinet to run the heat. In the upper and lower ends of the cabinet have a different number of cooling slots when the electrical components inside heat, heat rising through the upper slot discharge, and the cold wind from the bottom of the slot continuously added into the cabinet, since the sealing of the cabinet formed on the bottom of a natural ventilation channel, for cooling purposes.
(3) .GGD cabinet in accordance with the modern industrial product design requirements, using the golden ratio designed cabinet shape and size of each part of the split, so that the entire cabinet nice, new look.
(4) connected by a hinge-type door hinge frame, installation and easy removal, folding at the door are embedded with a mountain-type rubber strip, when closed between the door and frame moldings have a compression stroke, can prevent direct collision with the cabinet door, the door also increased level of protection.
(5) instrument equipped with electrical components with multi-strand copper wire door and the frame is connected between the cabinet and mounting frame with a knurled screw connection, the entire cabinet to form a complete grounding protection system.
(6) the choice of polyester orange-shaped cabinet finish baking, with strong adhesion, good texture, the entire cabinet was matte colors, to avoid the blinding effect, to create a duty more comfortable visual environment.
(7) of the cabinet cover can be removed when needed, easy to assemble and adjust the site of the main bus, four corners of countertops with rings for lifting and loading.
(8) cabinet protection rating of IP30, IP20 according to user requirements can also use the environment - to choose between IP40.
Installation and Use
After the product reaches the place of receipt, we should first check the packaging is intact, identify problems and find out the reasons shall promptly notify the authorities. For not installed immediately and should be under the normal conditions of use, and placed in the appropriate places.
• Product Installation
Install the product shall be carried out installation diagram (see Figure 2), basic channel and bolts owned by the user. The main bus tinned whole row should be installed to repair the lap surface smooth, handle clean, painted neutral Vaseline or take other measures, then bolted firmly.
◆ Before the product is installed and put into operation after the need for inspecting and testing the following items
(1) Check whether the cabinet finish off, the cabinet is dry and clean.
(2) the electrical components of the operating mechanism is flexible, there should be no catching or operating force is too large phenomenon.
(3) Major appliances off the main and auxiliary contacts are reliable and accurate.
(4). Instrumented with transformer ratio and the polarity is correct.
(5). Bus connection is good, insulation supports, installation pieces and accessories are securely installed and reliable.
(6) The auxiliary contact meets the requirements, fuse fuse specifications are correct setpoint relay meets the design requirements, the action is reliable and accurate.
(7) contact the circuit meets the requirements of electrical schematics.
(8) protection circuit system meets the requirements.
(9) with a 500-volt megger insulation resistance value shall not be less than 1MΩ.
◆ Use Caution
(1) This product is not wall mounted, single-sided (front), double door repair low voltage distribution cabinet. Maintenance access and door products must be tested for qualified professionals to enter or open running operation, inspection and maintenance.
(2) The air circuit breaker, after several close, after hours, contact the local host will burn and produce carbon material, the contact resistance increases, air circuit breakers should regularly use their maintenance and repair instructions.
Complete Set
Provide the following documents and accessories are supplied factory:
◆ Packing List
◆ product certification
◆ Instructions
◆ factory test report
◆ For electrical drawings
◆ door keys, the operating handle and spare the conditions stipulated in the policy contract.
Installation and Use
