GGD Low Voltage Switchgear

Overview

GGD Low Voltage Switchgear is a fixed-type complete low voltage switchgear widely used for AC power distribution, circuit protection, energy control and monitoring. Our model is engineered for overseas 60Hz grid systems, fully manufactured in accordance with IEC 61439 international standard.

This 4000A GGD low voltage switchboard delivers stable power supply for large industrial plants, power stations, commercial complexes, mining projects and infrastructure overseas. It features high breaking capacity, excellent dynamic & thermal stability, flexible electrical scheme layout and reliable long-term operation.Core Technical Parameters (Match Nameplate Spec)

Product Model: GGD

Execution Standard: IEC 61439

Rated Voltage: AC415V

Rated Current: 4000A

Rated Frequency: 60Hz

Protection Grade: IP4X

Structure Type: Fixed installation, fixed compartment

Application: AC low voltage power distribution system

Custom Service: Custom busbar layout, brand circuit breakers, meter configuration, factory serial number & stainless steel nameplate customization

Service condition

● The ambient air temperature shall not be higher than +40 ℃,not lower than -5℃, and the average temperature within 24h shall not be higher than +35℃;

● For indoor installation and use,the altitude of the place of use shall not exceed 2000m;

● The relative humidity of the surrounding air does not exceed 50% when the maximum temperature is +40℃,and a larger relative temperature should be allowed at a lower temperature (e.g:90%at +20℃ ), taking into account the possibility of temperature changes will occasionally cause condensation effects;

● When the equipment is installed,the inclination to the vertical plane should not exceed 5°;

● The equipment should be installed in a place where there is no severe vibration, impact and corrosion;

● When the user has special requirements,it can be resolved through consultation with the manufacturer.

Electrical performance

Basic electrical parameters

GGD AC Low-voltage Power Distribution Cabinet

Main circuit solution

The main circuit of the GGD cabinet has 129 solutions designed with a total of 298 specifications (excluding solutions and specifications derived from changes in the function of the auxiliary circuit and changes in the control voltage).

Wherein GGD1 type 49 solutions are available of 123 specifications

GGD2 type 53 solutions are available of 107 specifications

GGD3 type 27 solutions are available of 68 specifications

The main circuit solution is selected by soliciting the opinions of the majority of design and user departments,and the solution required by the power plant has been added. The rated current is up to 3150A, suitable for the selection of distribution transformers of 2000kVA and below. In addition,GGJ1 and GGJ2 capacitor compensation cabinets are designed to meet the needs of reactive power compensation, with 4 main circuit solutions and 12 specifications in total.

Product Advantages

✅ Compliant with IEC 61439 International Standard

Designed and tested following IEC 61439, meets global industrial electrical requirements for Middle East, Latin America, Southeast Asia projects.

✅ 4000A High Current Load Capacity

Optimized copper busbar system, suitable for heavy-load industrial main incoming power distribution.

✅ IP4X Protection Level

Prevents solid foreign objects ingress, suitable for indoor factory, substation and plant power rooms.

✅ 60Hz Specialized Design

Optimized for 60Hz power grids (Mexico, Saudi Arabia, Ghana and other overseas markets), stable operation without frequency adaptation issues.

✅ Modular & Flexible Assembly

Incoming cabinet, feeder cabinet, capacitor cabinet, ATS cabinet can be freely combined according to single-line diagram.

✅ Safe Mechanical Interlock System

Multiple safety interlock devices to avoid mis-operation, protect operators and electrical equipment.

✅ Durable Cabinet Housing

Cold rolled steel enclosure with anti-corrosion electrostatic coating; stainless steel nameplate for permanent equipment identification.

Auxiliary circuit solution

The design of the auxiliary circuit is available of two parts solutions:the power supply plan and the power generation plant. There is enough space in the GGD cabinet to install the secondary components. At the same time,a special LMZ3D current transformer has been developed to meet the needs of power plants and special users when the attached relay protection is necessary.

Main bus

Considering the price ratio and the feasibility of replacing copper with aluminum,single aluminum buss can be used when the rated current is 1500A and below, and double copper buss are used when the rated current is greater than 1500A. The manufacturer will produce prototypes and do "pass"the type test according to this regulation. Of course, the manufacturer can also replace the aluminum bus with a copper bus of the same current carrying capacity as the users requires. The overlapping surfaces of the buss are all treated with tin en amelling process.

Selection of electrical components

(1)The GGD cabinet mainly adopts the more advanced electrical components that can be mass-produced in China. At the same time, it also retains some features of old products such as DZ10D,DZ20,etc.under the premise of fully considering the feasibility according to economic and reasonable principles. Obsolete products are not used any more.

(2)HD13BX and HS13BX rotary operation knife switch is a special component designed to meet the needs of the unique structure of the GGD cabinet.It changes the operation mode of the mechanism and retains the advantages of the old product. It is a practical new type of electrical components.

(3)The design department selects new electrical components with better performance and more advanced technology as users need, because the GGD cabinet has good installation exibility, it will generally not cause manufacturing and installation difficulties due to the updated electrical components.

(4)In order to further improve the dynamicstabilty of the main circuit, a ZMJ type combined bus clamp and insulating support for the GGD cabinet are designed.The bus clamp is made of high-strength,high name-retardant PPO alloy material,with high insulation strength,good self-extinguishing performance,and unique structure. It can be easily combined into a single bus clamp or a double bus clamp by adjusting the building block. The insulating support is a sleeve-type molded structure with low cost and high strength, which solves the defect of insufficient creepage distance of old products.

Shape and installation dimensions

Complete set of products

Our company provides the following documents and attachments when supplying:

● Packing List

● Product certipcation

● User's manual

● Factory test report

● Related electrical drawings

● Keys for Cabinet door,operating handles and spare parts speciPed in the contract.