Gang electric - GGD low-voltage fixed type switchgear

Product overview
GGD ac low-voltage distribution cabinet is suitable for power plants, substations, industrial enterprises and other power users to exchange 501 hz, rated voltage: 380 v, rated current 3150 a power distribution system, as power, lighting and electrical energy conversion, distribution and control of power distribution unit.
GGD ac low voltage power distribution ark is according to the department of energy (doe) is in charge of the superior, large power users and design department to request, based on the principle of security, economic, reasonable and reliable design of new type low voltage power distribution cabinet.Products with high breaking capacity, good thermal stability, electrical scheme for flexible combination and series, strong practicability, novel structure, high protection grade, etc.The update products can be used as low-voltage complete switch equipment use.
GGD ac low voltage distribution ark it "low-voltage complete switch equipment and control equipment", GB7251.1-2005 "low-voltage complete switch equipment" and other standards.

Model and meaning

Conditions of use
1, the ambient air temperature is not higher than + 40.C, no less than 5 ℃.Shall not be higher than the average temperature within 24 h + 35 ℃.
2, indoor installation, use shall not exceed 2000 m altitude location.
3, the surrounding air relative humidity when the maximum temperature of + 405 ℃ not more than 50%.There is, in a relatively low temperature spend their days inch larger relative humidity.(such as H + 205 ℃, inch of 90%) should be considered due to the temperature
Changes may produce the effect of coagulation qiling accidentally.
4, equipment installation with the inclination of the vertical plane does not exceed 50%.
5, no case should be installed where no violent vibration and impact, and place of the deficient electric components from corrosion.
6, when users have special requirements, and manufacturers to talk things over solve.

Electrical properties

1, the basic electrical parameters

2, main circuit scheme
GGD cabinets of the main circuit design, 129, a total of 298 specifications (not including the changes of function of auxiliary circuit and the control voltage derived from changes of plan and specification).
Which type GGDl 49 123 specifications
GG D2 type 53 107 specifications
GG type 3 E) 27 68 specifications
Main circuit scheme is to solicit the opinions of the general design, use department selected.Increased Fang Li plants need.Rated current up to 50 a, 31 for 2000 l < VA and distribution transformer is chosen.
In addition, in order to adapt to the needs of reactive power compensation design the GG [) 1, GGD2 capacitance compensation cabinet, the main circuit scheme 4, a total of 1 2 specifications.
3, auxiliary circuit scheme
Auxiliary circuit design points of power supply and power plant two parts, GGD incase there is enough space to install the second element, but also developed a dedicated LMz3D current transformer in order to meet the power plant and special users attached power-off protection needs.
Line 4, mistress
Considering the price and with the feasibility of aluminum and copper, rated current under 500 a and LvPai by the single bus bar.When the rated current is greater than 1 500 a double copper platoon bus.According to provisions of the factory manufacturing prototype and through the type testing.Factory, of course, can also according to the requirement of the user to replace aluminum bus bar with the same amount of intercepting copper bus bar.
Busbar lap surface adopt tin coating process.
5, electrical components selection
, GGD cabinets mainly adopts a domestic has been able to mass production of more advanced electrical components, such as ME, 【 DZ20, DEl5, etc., also based on the principle of the economic and reasonable, on the premise of fully considering the feasibility to retain some of the older products available, don't choose have for your products.
B, HDl3BX and HSl3BX ~ rotation operation type knife switch is designed to meet the needs of GGD cabinets unique structure of special components, it changed the way the operation of the machinery, retain the advantages of the old ones, is a kind of practical new type of electrical components.
C, such as the design department according to user needs, choose more excellent performance, technology more advanced new type electric components, due to the GGG ark has good installation flexibility, general won't because update caused the difficulty of manufacture and installation of electrical components.
D, for progress improve the ability of dynamic stability of the main circuit, design of GGD cabinets dedicated ZMJ type combined bus bar clamp and insulating support.Bus bar clamp by high strength, gao Yang type combustion UPP0 alloy hot forming, the high dielectric strength, self-extinguishing can good structure is unique, only changed between modular blocks can be easily combined into a single or double busbar busbar clamp holder.Insulation support sleeve is moulded structure, low cost, high strength, solve the defect of the old product creepage distance is not enough.

The product of complete
Manufacturer shall provide the following documents and accessories supply
1, packing list;
2, product certification;
3, operating instructions;
4, factory test report;
5, about the electrical drawings;
6, cupboard door keys, operating handle and the spare part stipulated in the contract.

Structural characteristics of
1, GGD ac low voltage distribution ark cabinet put oneself in another's position in the form of general tank, frame with 8 mf local welding assembled, cold bending steel frame parts and special parts by steel support designated factory suppliers, to ensure the accuracy and quality of cabinet put oneself in another's general tank parts according to the principle of module design, and have 20 die mounting holes, general coefficient is high.Easy to factory implementation of pre-production.
Which shortened the manufacturing cycle and improve the working efficiency.
2, GGD cabinets design fully consider the heat dissipation problem in operation of the cabinet put oneself in another's position.In the cabinet put oneself in another's position has a different number of cooling slots on both ends of the up and down, after the electrical components contained in heating, heating up, through the top slot, and cold wind constantly by the bottom slot added into the ark, sealed cabinet put oneself in another's position from bottom to form a natural ventilation, heat dissipation.
3, GGD cabinets according to the requirements of modern industrial product modeling design, adopt the method of golden section ratio design of cabinet put oneself in another's position appearance and segmentation size of each part, make the beauty is generous, transformed as a whole.
4, cupboard door hinge shaft type activities connected to the frame to install, easy disassembly.Down the side of the door are rubber strips are rooted mountain type, close the door, inch fillet between door and frame of the compression stroke, can prevent the door direct collision with cabinet put oneself in another's position, and improve the protection grade of the door.
More than 5, equipped with electrical components of the instrument door with a soft copper wire connected to the frame.Incase of installation piece and the frame, with the knurled screw connection between FCL form a complete grounding protection circuit.
6, cabinet put oneself in another's finish choose polyester orange baking paint.Strong adhesion, good texture.FCL is inferior smooth tonal, to avoid the blinding effect, created a comfortable visual environment for the staff on duty.
7, bucket of macrosomia when needed can be dismantled and facilitate the mistress line assembly and adjustment, the corners on the top of the cupboard with rings, is used for lifting and shipment.
8, cabinet put oneself in another's position of expansion for IP30 grade, the user can also according to the requirements of using the environment between IP20 ~ IP40 choice.

Install and use
Product arrived at the place of receipt, first of all should check whether the packaging is intact, found that the problem should be timely notify the relevant departments to find the reason.Products are not immediately, should according to the provisions of the conditions of normal use.At the appropriate place.
1, the product installation should be performed according to the installation diagram (see chart 2), basic channel and bolts should bring along their own by the user, mistress line installation repair lap surface should be smooth, clean and coated with neutral vaseline or take other measures then use bolts.
2, the product after installation, need to check the following projects before put into operation with the test.
A, check the cabinet put oneself in another's position with or without paint falls off rack is dry and clean.
B, electrical components, whether the operating mechanism of flexible, should not be binding or operating phenomenon of excessive force.
C, the main electrical on-off is reliable and accurate.The auxiliary contacts on and off is reliable and accurate.
D, instrument and transformer ratio and polarity are correct.
E, busbar connections are in good condition, whether the insulation support, installation, parts and accessories installation is firm and reliable.
F, auxiliary contact is in accordance with the requirements of fuse molten core specification is correct, the relay setting value is in accordance with the design requirements, the action is accurate.
G, circuit contact whether conform to the requirements of the electric schematic diagram.
H, protection circuit system meets the requirements.
I, with a 500 v megohmmeter measuring insulation resistance shall be not less than 1 megohm.

3, use matters needing attention
A, this product is not wall installation, single (positive) operation, double open the door maintenance of low-voltage distribution cabinet.Product maintenance channel and cupboard door, must be tested for qualified professionals can enter or open for operation, inspection and maintenance.
B, air circuit breaker, after many times, points, main contact local burns and causes carbon material, make contact resistance increases.Should be conducted on a regular basis air circuit breaker according to the instruction for use in maintenance and repair.