Overview
The GGD type AC low-voltage distribution cabinet is suitable for AC 50Hz, rated operating voltage 380V, rated operating current up to 3150A distribution systems in power plants, substations, industrial and mining enterprises, and other power users, serving for the conversion, distribution, and control of electrical energy for power, lighting, and distribution equipment.
The GGD type AC low-voltage distribution cabinet is a new type of low-voltage distribution cabinet designed in accordance with the requirements of the competent authorities of the Ministry of Energy, the vast number of power users, and design departments, following the principles of safety, economy, rationality, and reliability. The product features high breaking capacity, good dynamic and thermal stability, flexible electrical schemes, convenient combination, strong seriality and practicality, novel structure, and high protection rating. It can be used as a replacement product for low-voltage complete switchgear.
The GGD type AC low-voltage distribution cabinet complies with standards such as IEC439 "Low-Voltage Complete Switchgear and Controlgear" and GB7251 "Low-Voltage Complete Switchgear".
Operating Conditions
1. The ambient air temperature shall not exceed +40°C and shall not be lower than -5°C, and the average temperature within 24 hours shall not exceed +35°C;
2. For indoor installation and use, the altitude of the installation site shall not exceed 2000m;
3. The relative humidity of the ambient air shall not exceed 50% at the maximum temperature of +40°C. A higher relative humidity is permissible at lower temperatures (for example, 90% at +2°C), taking into account the possible occasional condensation effects due to temperature changes;
4. The inclination from the vertical plane during equipment installation shall not exceed 5°;
5. The equipment shall be installed in locations free from severe vibration and impact, and in places where electrical components will not be subjected to corrosion;
6. If users have special requirements, they can be resolved through consultation with the manufacturer.
Electrical Performance
Basic Electrical Parameters
| Model | Rated Voltage (V) | Rated Current (A) | Rated Short-Circuit Breaking Current (kA) | Rated Short-Time Withstand Current (1s) (kA) | Rated Peak Withstand Current (kA) | ||
| GGD1 | 380 | A | 1000 | 15 | 15 | 30 | |
| B | 600(630) | ||||||
| C | 400 | ||||||
| GGD2 | 380 | A | 1500(1600) | 30 | 30 | 63 | |
| B | 1000 | ||||||
| C | 600 | ||||||
| GGD3 | 380 | A | 3150 | 50 | 50 | 105 | |
| B | 2500 | ||||||
| C | 2000 | ||||||
