GGD/GCK/GCS/MNS Series Switchgears
Structure Features
1. It adopts a universal switchgear structure, featuring a high generality.
2. All compartments in our switchgears are installed separately, including functional compartment, busbar compartment and cable compartment.
3. A compact design greatly saves space.
4. A modular structure provides easy assembly.
5. High quality flame retardant materials ensure a safe and secure operation.
6. The protection grade of enclosure is designed IP40.
All of our switchgears have passed routine test, type test and special test conducted by the State High Voltage Apparatus Quality Supervision and Examination Center. Our switchgears are produced in strict compliance with national standards and client’s requirement. Unqualified products will be picked out.
GCK Series Low Voltage Switchgear
GCK series low voltage switchgear is extensively used as distribution equipment and motor control machine for three-phase four-wire or three-phase five-wire system with a voltage of 380V and a frequency of 50Hz. It has found wide applications in these following places: metallurgy rolling, petrochemicals, textiles, ports and hotels. Our LV switchgear is a type of advanced and functional product which has passed all type tests.
Parameters
| Items | Data |
| Rated working voltage (Ue) | 380 V |
| Rated insulation voltage (Ui) | 660V |
| Rated frequency | 50Hz |
| Pollution degree | 3 |
| Overvoltage degree | III, IV （Inlet wire cabinet） |
| Protection grade of enclosure | IP30, IP31, IP40, IP41 |
| Vertical bus | 1000A |
| Rated short-time withstand current of vertical bus (lcw) | 50kV (Valid value) 1 second |
| Rated peak withstand current of vertical bus (lpk) | 105 kV |
| Inlet and outlet wire location | Top and bottom of the switchgear |
| Wire connection area | Right and back side |
Note: If you have any special requirement, please feel free to contact with us. We’ll try our best to satisfy your demands.
SCE-GCS Series Low Voltage Switchgear
In accordance with the research and development of domestic low voltage switch cabinets, our company carries out some adjustment and improvement in our switchgears. The launched SCE-GCS series switchgear has come up to the advanced levels and worked as a power equipment of energy receiving, transferring and controlling for 380V, 50Hz three-phase four-wire or five-wire AC power systems. It has been extensively used in power plants, petrochemicals, metallurgy rolling, textile, energy transferring, ports, mining, residential community and high buildings.
Technical Parameters of SCE-GCS Series Switchgear
| Items | Data |
| Rated working voltage (Ue) | 380 V |
| Rated insulation voltage (Ui) | 660V |
| Rated frequency | 50Hz |
| Pollution degree | 3 |
| Overvoltage degree | III, IV (Inlet wire cabinet) |
| Protection grade of enclosure | IP30, IP31, IP40, IP41 |
| Vertical bus | 1000A |
| Rated short-time withstand current of vertical bus ( lcw) | 50kA/105 kA |
| Rated peak withstand current of vertical bus (lpk) | 1000A~3150A |
| Inlet and outlet wire location | Top and bottom of the switchgear |
| Wire connection area | Right and back side |
Parameters of Horizontal Bus
| Mode | Rated working current of horizontal bus (A) | Specifications | Rated short-time withstand current/rated peak withstand current (lcw/lpk) |
| SCE-GCS | 1000A | TMY-2(5 × 50) | 50kA/105 kA |
| 1250A | TMY-2(6 × 60) | ||
| 1600A | TMY-2(10 × 60) | ||
| 2000A | TMY-2(10 × 80) | ||
| 2500A | TMY-2(10 × 100) | ||
| 3150A | TMY-2(10 × 80) |
Rated Dispersion Coefficient
There are several main circuits in one set of switchgear or one part of switchgear. The rated dispersion coefficient equals to the ratio of the maximum current sum of all main circuits to the rated current sum of all main circuits in one set of switchgear or one part of switchgear.
Parameters
| Number of main circuits | Rated dispersion coefficient |
| 2-3 | 0.9 |
| 4-5 | 0.8 |
| 6-9 | 0.7 |
| 10 and above | 0.6 |
Note: If you have any special requirement, please feel free to contact with us. We’ll try our best to satisfy your demands.
GGD Series Low Voltage Distribution Cabinet
GGD series low voltage distribution cabinet is applicable for AC distribution system, with 50Hz rated frequency, 380V rated working voltage and 3,150A rated working current. Used for power transferring, distributing and controlling, our distribution cabinet is widely applied in power plants, substations, mining, to name a few.
GGD alternating current distribution cabinet is characterized by exceptional security, reasonable price, good design and high reliability. Its important advantages include good breaking capacity, thermal stability, convenient design, high protection grade, practicability, etc.
Electrical Parameters
| Mode | Rated voltage (V) | Rated current (V) | Rated short-circuit current(kV) | Rated short-time withstand current (kV) | Rated peak withstand current ( kV) | |
| GGD1 | 380 | A | 1000 | 15 | 15 | 15 |
| B | 600 (630) | |||||
| C | 400 | |||||
| GGD2 | 380 | A | 1500 (1600) | 30 | 30 | 30 |
| B | 1000 | |||||
| C | ||||||
| GGD3 | 380 | A | 3150 | 50 | 50 | 50 |
| B | 2500 | |||||
| C | 2000 | |||||
Main Circuit Scheme
The main circuit scheme is designed based on the suggestion and advices from countless technicians and engineers. We totally put forward 129 schemes and 289 specifications. Not only that, we add a special scheme for distribution system with a rated current less than 3,150A and a capacity less than 2,000 kVA.
In consideration of reactive compensation, we’ve designed GGJ capacitor compensation cabinet, which has four circuit schemes and 12 specifications.
Auxiliary Circuit Scheme
The auxiliary circuit scheme consists of power supply scheme and power plant scheme. There is enough space in the GGD cabinet to install secondary components. We also develop special current transformer to meet the relay protection demands of power plant and clients.
Main Bus
When the rated current of main bus is below 1,500A, it's suitable to use one copper busbar. When the rated current is over 1,500A, two copper busbars are enough. The connection of main bus is processed with tin.
Note: If you have any special requirement, please feel free to contact with us. We’ll try our best to satisfy your demands.
SCE-MNS Low Voltage Switchgear
Based on the development of low voltage switchgears in China, our company makes some improvement and adjustment in SCE-MNS low voltage switchgear, which has reached domestic advanced levels and usually acts as a power equipment for energy receiving, transferring and controlling. This type of switchgear is perfect for use in three-phase four-wire or five-wire AC power systems. It’s popularly applied in power plants, transformer substations, petrochemicals, metallurgy rolling, transportation, textile, mining, residential community and high buildings.
Technical Parameters
| Items | Data |
| Rated working voltage (Ue) | 660V |
| Rated insulation voltage(Ui) | 380V |
| Rated frequency | 50Hz |
| Pollution degree | 3 |
| Overvoltage degree | III, IV (Inlet wire cabinet) |
| Protection grade of enclosure | IP30, IP31, IP40, IP41 |
| Vertical bus | 1000A |
| Rated short-time withstand current of vertical bus (lcw) | 50kA/105 kA |
| Rated peak withstand current of vertical bus (lpk) | 1000A~3150A 2500A~5000A 50kA/105 kA 80kA/176 kA |
| Size (mm) | Width: 600, 800, 1000, 1200 Depth: 600, 800, 1000, 1200 Height: 2200, 2400 |
| Inlet and outlet wire location | Top and bottom of the switchgear |
| Wire connection area | Right and back side |
Parameters of Horizontal Bus
| Mode | Rated working current of horizontal bus (A) | Specifications | Rated short-time withstand current/rated peak withstand current (lcw/lpk) |
| SCE-MNS | 1000A | TMY-2(5 × 50) | 50kA/105 kA |
| 1250A | TMY-2(6 × 60) | ||
| 1600A | TMY-2(10 × 60) | ||
| 2000A | TMY-2(10 × 80) | ||
| 2500A | TMY-2(10 × 100) | ||
| 3150A | TMY-2(10 × 80) | ||
| SCE-MNS2 | 2500A | TMY-2(10 × 100) | 80kA/176 kA |
| 3150A | TMY-2(10 × 120) | ||
| 4000A | TMY-2(10 × 100) | ||
| 5000A | TMY-2(10 × 120) |
Notes: When the current of main busbar is greater than or equal to 4,000A, we make use of non-magnetic materials to prevent high temperature caused by eddy current.
Rated Dispersion Coefficient
There are several main circuits in one set of switchgear or one part of switchgear. The rated dispersion coefficient equals to the ratio of the maximum current sum of all main circuits to the rated current sum of all main circuits in one set of switchgear or one part of switchgear.
Parameters
| Number of main circuits | Rated dispersion coefficient |
| 2-3 | 0.9 |
| 4-5 | 0.8 |
| 6-9 | 0.7 |
| 10 and above | 0.6 |
Note: If you have any special requirement, please feel free to contact with us. We’ll try our best to satisfy your demands.
