GGD Low voltage Switch Box
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The main function of switch cabinet is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and electric energy conversion. The components in the switch cabinet mainly include circuit breaker, disconnecting switch, load switch, operating mechanism, mutual inductor and various protective devices. There are many classification methods of switchgear, such as the circuit breaker installation can be divided into moving switchgear and fixed switchgear; Or according to the different structure of the cabinet, it can be divided into open switch cabinet, metal closed switch cabinet, and metal closed armored switch cabinet; According to the different voltage levels can be divided into high voltage switchgear, medium voltage switchgear and low voltage switchgear. Mainly applicable to power plants, substations, petrochemical, metallurgical steel rolling, light industry textile, factories and mining enterprises and residential areas, high-rise buildings and other different occasions.
General
1. Rating: Rated voltage: 380V.
2. Rated current: 3150A, 50-60Hz
3. Application: mainly applicable in power station, power substation industrial and mining enterprises as energy converter, distributor and controller of power, light and distribution device.
4. Standard: IEC60439-1
Working Conditions
1. Ambient air temperature: -15℃~+40℃ Daily average temperature: ≤35℃ When the actual temperature exceed the range, it should be used by reducing the capacity accordingly.
2. Transport and store temperature: -25℃~+55℃. do not exceed +70℃ in short time.
3. Altitude: ≤2000m
4. Relative humidity: ≤50%, when temperature is +40℃ When temperature is low, larger relative humidity is allowed. when it is +20℃, relative humidity can be 90%. Since the temperature change will make out condensation.
5. Installation inclination: ≤5%
6. Applicable in the places without corrosive and flammable gas.
Note: Customized products are available.
Main technical parmeter
1.Main technical data
|
Type |
Rated voltage (V) |
Rated current (A) |
Rated short-circuit breaking current (kA) |
Rated short-circuit withstand current (1s)(1kA) |
Rated peak withstand voltage (kA) |
| GGD1 | 380 | A 1000 | 15 | 15 | 30 |
| 380 | B 600(630) | 15 | 15 | 30 | |
| 380 | C 400 | 15 | 15 | 30 | |
| GGD2 | 380 | A 1500(1600) | 30 | 30 | 63 |
| 380 | B 1000 | 30 | 30 | 63 | |
| 380 | C 600 | 30 | 30 | 63 | |
| GGD3 | 380 | A 3150 | 50 | 50 | 105 |
| 380 | B 2500 | 50 | 50 | 105 | |
| 380 | C 2000 | 50 | 50 | 105 |
2.Main bus
1)Single copper busbar adopted when the rated current<=1500A
2)Double copper busbar adopted when the rated current>1600A
3)Brushing & anodizing process which is better than traditional zinc-coated process.
3.selection of horizontal bus
|
Rated current (A) |
Copper Busbar specification (mm) |
|
400 |
40*4 |
|
630 |
50*5 |
|
1250 |
60*10 |
|
1600 |
80*10 |
|
2000 |
2*(60*10) |
|
2500 |
2*(80*10) |
|
3150 |
2*(100*10) |
4.Selection of neutral earthgin bus
|
Cross section of phase conductor (mm²) |
Cross section of PE(N) conductor (mm²) |
|
500~720 |
40*5 |
|
1200 |
60*6 |
|
>1200 |
60*10 |
