Description
1、 The definition and classification of medium voltage switchgear refers to a type of equipment that includes collectors, isolating switches, fuses, instruments, and protective devices. It is an important distribution equipment in the power system, used for controlling, distributing, and protecting electrical energy. Among them, medium voltage refers to the rated voltage between 1kV and 35kV. According to different usage scenarios, medium voltage switchgear can be divided into indoor, outdoor, and mobile types. 2、 The application of medium voltage switchgear is widely used in the field of medium voltage distribution and AC transmission in power systems, including urban distribution, industrial distribution, power plants, substations, and other fields. The specific applications are as follows: 1 In the field of power distribution, medium voltage switchgear plays an irreplaceable role in urban power distribution, such as regional power supply systems and distribution systems in industrial and mining enterprises. 2. Power plant field: The medium voltage switchgear is located in the power plant and is mainly used for the output voltage of the generator and the transmission process in the system. 3. Substation field: Medium voltage switchgear is an essential equipment for substations, which plays a crucial role in the stability and reliability of the power system. At the same time, medium voltage switchgear is widely used in fields such as petroleum, chemical, and coal. 3、 Functions and characteristics of medium voltage switchgear 1 Control function: The medium voltage switchgear can control the on/off, on/off, and distribution of electrical energy of the circuit. 2. Protection function: The medium voltage switchgear also has the function of protecting the circuit from overload, short circuit, and grounding. 3. Automation function: The medium voltage switchgear can also achieve automated detection and control, improving the intelligence level of the power system. 4. Safety performance: The design of the medium voltage switchgear meets the protection level, making it have waterproof, dustproof, fireproof and other safety performance. The medium voltage switchgear has the characteristics of compact structure, flexible use, high reliability, and easy installation and maintenance, and is widely used in power systems
Armored withdrawable AC metal-enclosed switchgear (hereinafter referred to as "switchgear") is suitable for three-phase 50 Hz power systems. It is used for receiving and distributing electrical energy and controlling, protecting, and monitoring circuits.
This product complies with the GB3906 standard "3-35kV AC metal-enclosed switchgear," GB/T11022 "Common technical requirements for high-voltage switchgear and controlgear standards," IEC60298 "AC metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to 50kV," and DL/T404 "Technical conditions for ordering indoor AC high-voltage switchgear."
PROJECT | UNIT | N/A | RATED VOLTAGE | kV | 3.6,7.2,12,40.5 | ||
RATED FREQUENCY | Hz | 50 | |||||
RATED CURRENT OF CIRCUIT BREAKER | A | 630,1250,1600,2000,2500,3150 | |||||
RATED CURRENT OF SWITCHGEAR | A | 630,1250,1600,2000,2500,3150 | |||||
RRATED SHORT-TERM WITHSTAND CURRENT(4S) | kA | 16,20,25,31.5,40 | |||||
RATED PEAK WITHSTAND CURRENT(PEAK) | kA | 40,50,63,80,100 | |||||
RATED SHORT-CIRCUIT BREAKING CURRENT | kA | 16,20,25,31.5,40 | |||||
RATED SHORT-CIRCUIT MAKING CURRENT(PEAK) | kA | 40,50,63,80,100 |
1. Ambient air temperature; maximum temperature +40ºC, minimum temperature -15ºC.
2. Humidity conditions;
Daily average relative humidity: ≤95%
Daily average water vapor pressure does not exceed 2.2kPa;
Monthly average cabinet relative humidity: ≤90%
Monthly average water vapor pressure does not exceed 1.8kPa;
3. Altitude: less than 1000m.
4. Seismic intensity: not exceeding 8 degrees.
5. The surrounding air should not be exposed to corrosive or flammable gases, water vapor, or other obvious pollutants.
6. No places with frequent severe vibrations.
7. When used under normal environmental conditions exceeding the specifications of GB3906, it should be negotiated between the user and the manufacturer.
1. The structure of the switch device is shown in Figure 1.
2. Fully metal assembled, modular structure with a wide range of combination options.
3. The cabinet is made of imported aluminum-zinc coated thin steel plate, processed by CNC machine tools, using advanced multiple folding technology, connected with pull lily nuts and high-strength bolts, with high precision, corrosion resistance, light weight, high strength, and strong component interchangeability.
4. Can be equipped with ZN 63A-12 series or imported VD4 series vacuum circuit breakers, with wide applicability, high reliability, and maintenance-free operation for many years.
5. The handcart device has positioning and display devices for working, testing, and various positions, ensuring safety and reliability.
6. Various types of handcart devices can be changed like modular blocks, ensuring free interchangeability among carts of the same specifications, while carts of different specifications are strictly prohibited from entering.
7. The handcart is transported by a dedicated carrier, making it easy and flexible to operate.
8. The cable compartment can accommodate up to 9 single-core cables.
9. Highly reliable interlocking device that fully meets the "five prevention" requirements.
10. Each high-voltage compartment has a pressure relief channel to ensure personal safety.
11. The front door is equipped with an observation window made of explosion-proof glass, allowing the working status of internal components to be observed.
12. When used under normal environmental conditions exceeding the GB3906 specifications, it should be determined through consultation between the user and the manufacturer.
A Busbar compartment
B Circuit breaker compartment
C Cable compartment
D Relay and instrument compartment
1 Outer shell
2 Branch busbar
3Busbar sleeve
4 Main busbar
5 Static contact device
6 Contact box
7 Current transformer
8 Ground switch
9 Cable
10 Surge arrester
11 Grounding busbar
12 Removable partition
13 Partition (valve)
14 Secondary socket
15 Circuit breaker trolley
16 Heating device
17 Withdrawable horizontal partition
18 Ground switch operating mechanism
19 Base plate
20 Pressure relief device
21 Control wire duct
Parameters
40.5kV Indoor AC Medium-Voltage Open Metal Armored Movable Switchgear
Item | Name | Unit | Parameters |
1 | Nominal Voltage | kV | 40.5 |
2 | Rated Current | A | 1250、1600、2000 |
3 | Rated Frequency | Hz | 50 |
4 | Rated Short Time Withstand Current | kA | 20、25、31.5 |
5 | Rated Peak Withstand Current | kA | 50、63、80 |
6 | Rated Power Frequency Withstand Voltage | kV | 95/ min |
7 | Rated Lightning Impulse Withstand Voltage | kV | 185 |
8 | Rated Short-circuit Period | S | 4 |
9 | Protection Grade |
| IP3X |
12kV Indoor AC Medium-Voltage Open Metal Armored Movable Switchgear
Project | Unit | Parameters | |
Rated Voltage | KV | 3、6、7.2、12 | |
Rated Frequency | Hz | 50 | |
Circuit Breaker Rated Current | A | 630、1250、1600、2000、2500、3150 | |
Switch Cabinet Rated Current | A | 630、1250、1600、2000、2500、3150 | |
Rated Short Time Withstand Current (4S) | KA | 16、20、25、31.5、40、50 | |
Rated Peak withstand Current (Peak) | KA | 40、50、63、80、100、125 | |
Rated Short Circuit Breaking Current | KA | 16、20、25、31.5、40、50 | |
Rated Short Circuit Closing Current (Peak) | KA | 40、50、63、80、100、125 | |
Rated insulation level | 1Min Power Frequency Withstand Voltage | KV | 24、32、42 |
Lightning Impulse Withstand Voltage | KV | 40、60、75 | |
Protection level | The case is IP4X, the isolation room and the circuit breaker door are IP2X when it is opened | ||
12kV Indoor AC Medium-Voltage Open Metal Armored Movable Switchgear
Name | Unit | F Load Switch Cabinet | FR Load Switch-fuse Cabinet | ||
Rated Voltage | kV | 12 | |||
Rated Frequency | HZ | 50 | |||
Rated Current | Mistress Line | A | 630 | ||
Load Switch | 630 | ||||
Maximum Rated Current of Fuse | 125 | ||||
Rated Short Time Withstand Current (4S) | kA | 20 | Depends on The Fuse | ||
r. m. s | |||||
Rated Peak Withstand Current and Closing Current | kA | 50 | Depends on The Fuse | ||
Peak | |||||
Rated Breaking Current | Active Load Current | A | 630 |
| |
5% Active Load Current |
| 31.5 | |||
Closed Loop Current |
| 630 |
| ||
No-load Transformer | kVA | 315-1600 | |||
Cable Charging Current | A | 10 | |||
Transfer Current |
|
| 3150 | ||
Rated Short Circuit Breaking Current | kA |
| 31.5 | ||
Power Frequency Withstand Voltage | Phase and Ground 1 solation Fracture | kV | 42/48 | ||
Lightning Impulse |
| 75/48 | |||
Shape size(W×D×H) | mm | 900×900×2200 | |||
Working environment
1. The ambient air temperature : -5°C ~ +40°C;
2. Daily average temperature(Within 24h): ≤+35ºC
3. Altitude : less than 1000m;
4.. Relative humidity: within 24h, daily average value ≤ 95% , daily average vapor pressure≤ 2.2KPa;
monthly average value ≤ 90%, monthly average vapor pressure≤ 1.8KPa
* Ambient air is not significantly polluted by dust, smoke, corrosive and / or flammable gas, vapor or salt contami
Description
1、 The definition and classification of medium voltage switchgear refers to a type of equipment that includes collectors, isolating switches, fuses, instruments, and protective devices. It is an important distribution equipment in the power system, used for controlling, distributing, and protecting electrical energy. Among them, medium voltage refers to the rated voltage between 1kV and 35kV. According to different usage scenarios, medium voltage switchgear can be divided into indoor, outdoor, and mobile types. 2、 The application of medium voltage switchgear is widely used in the field of medium voltage distribution and AC transmission in power systems, including urban distribution, industrial distribution, power plants, substations, and other fields. The specific applications are as follows: 1 In the field of power distribution, medium voltage switchgear plays an irreplaceable role in urban power distribution, such as regional power supply systems and distribution systems in industrial and mining enterprises. 2. Power plant field: The medium voltage switchgear is located in the power plant and is mainly used for the output voltage of the generator and the transmission process in the system. 3. Substation field: Medium voltage switchgear is an essential equipment for substations, which plays a crucial role in the stability and reliability of the power system. At the same time, medium voltage switchgear is widely used in fields such as petroleum, chemical, and coal. 3、 Functions and characteristics of medium voltage switchgear 1 Control function: The medium voltage switchgear can control the on/off, on/off, and distribution of electrical energy of the circuit. 2. Protection function: The medium voltage switchgear also has the function of protecting the circuit from overload, short circuit, and grounding. 3. Automation function: The medium voltage switchgear can also achieve automated detection and control, improving the intelligence level of the power system. 4. Safety performance: The design of the medium voltage switchgear meets the protection level, making it have waterproof, dustproof, fireproof and other safety performance. The medium voltage switchgear has the characteristics of compact structure, flexible use, high reliability, and easy installation and maintenance, and is widely used in power systems
Armored withdrawable AC metal-enclosed switchgear (hereinafter referred to as "switchgear") is suitable for three-phase 50 Hz power systems. It is used for receiving and distributing electrical energy and controlling, protecting, and monitoring circuits.
This product complies with the GB3906 standard "3-35kV AC metal-enclosed switchgear," GB/T11022 "Common technical requirements for high-voltage switchgear and controlgear standards," IEC60298 "AC metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to 50kV," and DL/T404 "Technical conditions for ordering indoor AC high-voltage switchgear."
PROJECT | UNIT | N/A | RATED VOLTAGE | kV | 3.6,7.2,12,40.5 | ||
RATED FREQUENCY | Hz | 50 | |||||
RATED CURRENT OF CIRCUIT BREAKER | A | 630,1250,1600,2000,2500,3150 | |||||
RATED CURRENT OF SWITCHGEAR | A | 630,1250,1600,2000,2500,3150 | |||||
RRATED SHORT-TERM WITHSTAND CURRENT(4S) | kA | 16,20,25,31.5,40 | |||||
RATED PEAK WITHSTAND CURRENT(PEAK) | kA | 40,50,63,80,100 | |||||
RATED SHORT-CIRCUIT BREAKING CURRENT | kA | 16,20,25,31.5,40 | |||||
RATED SHORT-CIRCUIT MAKING CURRENT(PEAK) | kA | 40,50,63,80,100 |
1. Ambient air temperature; maximum temperature +40ºC, minimum temperature -15ºC.
2. Humidity conditions;
Daily average relative humidity: ≤95%
Daily average water vapor pressure does not exceed 2.2kPa;
Monthly average cabinet relative humidity: ≤90%
Monthly average water vapor pressure does not exceed 1.8kPa;
3. Altitude: less than 1000m.
4. Seismic intensity: not exceeding 8 degrees.
5. The surrounding air should not be exposed to corrosive or flammable gases, water vapor, or other obvious pollutants.
6. No places with frequent severe vibrations.
7. When used under normal environmental conditions exceeding the specifications of GB3906, it should be negotiated between the user and the manufacturer.
1. The structure of the switch device is shown in Figure 1.
2. Fully metal assembled, modular structure with a wide range of combination options.
3. The cabinet is made of imported aluminum-zinc coated thin steel plate, processed by CNC machine tools, using advanced multiple folding technology, connected with pull lily nuts and high-strength bolts, with high precision, corrosion resistance, light weight, high strength, and strong component interchangeability.
4. Can be equipped with ZN 63A-12 series or imported VD4 series vacuum circuit breakers, with wide applicability, high reliability, and maintenance-free operation for many years.
5. The handcart device has positioning and display devices for working, testing, and various positions, ensuring safety and reliability.
6. Various types of handcart devices can be changed like modular blocks, ensuring free interchangeability among carts of the same specifications, while carts of different specifications are strictly prohibited from entering.
7. The handcart is transported by a dedicated carrier, making it easy and flexible to operate.
8. The cable compartment can accommodate up to 9 single-core cables.
9. Highly reliable interlocking device that fully meets the "five prevention" requirements.
10. Each high-voltage compartment has a pressure relief channel to ensure personal safety.
11. The front door is equipped with an observation window made of explosion-proof glass, allowing the working status of internal components to be observed.
12. When used under normal environmental conditions exceeding the GB3906 specifications, it should be determined through consultation between the user and the manufacturer.
A Busbar compartment
B Circuit breaker compartment
C Cable compartment
D Relay and instrument compartment
1 Outer shell
2 Branch busbar
3Busbar sleeve
4 Main busbar
5 Static contact device
6 Contact box
7 Current transformer
8 Ground switch
9 Cable
10 Surge arrester
11 Grounding busbar
12 Removable partition
13 Partition (valve)
14 Secondary socket
15 Circuit breaker trolley
16 Heating device
17 Withdrawable horizontal partition
18 Ground switch operating mechanism
19 Base plate
20 Pressure relief device
21 Control wire duct
Parameters
40.5kV Indoor AC Medium-Voltage Open Metal Armored Movable Switchgear
Item | Name | Unit | Parameters |
1 | Nominal Voltage | kV | 40.5 |
2 | Rated Current | A | 1250、1600、2000 |
3 | Rated Frequency | Hz | 50 |
4 | Rated Short Time Withstand Current | kA | 20、25、31.5 |
5 | Rated Peak Withstand Current | kA | 50、63、80 |
6 | Rated Power Frequency Withstand Voltage | kV | 95/ min |
7 | Rated Lightning Impulse Withstand Voltage | kV | 185 |
8 | Rated Short-circuit Period | S | 4 |
9 | Protection Grade |
| IP3X |
12kV Indoor AC Medium-Voltage Open Metal Armored Movable Switchgear
Project | Unit | Parameters | |
Rated Voltage | KV | 3、6、7.2、12 | |
Rated Frequency | Hz | 50 | |
Circuit Breaker Rated Current | A | 630、1250、1600、2000、2500、3150 | |
Switch Cabinet Rated Current | A | 630、1250、1600、2000、2500、3150 | |
Rated Short Time Withstand Current (4S) | KA | 16、20、25、31.5、40、50 | |
Rated Peak withstand Current (Peak) | KA | 40、50、63、80、100、125 | |
Rated Short Circuit Breaking Current | KA | 16、20、25、31.5、40、50 | |
Rated Short Circuit Closing Current (Peak) | KA | 40、50、63、80、100、125 | |
Rated insulation level | 1Min Power Frequency Withstand Voltage | KV | 24、32、42 |
Lightning Impulse Withstand Voltage | KV | 40、60、75 | |
Protection level | The case is IP4X, the isolation room and the circuit breaker door are IP2X when it is opened | ||
12kV Indoor AC Medium-Voltage Open Metal Armored Movable Switchgear
Name | Unit | F Load Switch Cabinet | FR Load Switch-fuse Cabinet | ||
Rated Voltage | kV | 12 | |||
Rated Frequency | HZ | 50 | |||
Rated Current | Mistress Line | A | 630 | ||
Load Switch | 630 | ||||
Maximum Rated Current of Fuse | 125 | ||||
Rated Short Time Withstand Current (4S) | kA | 20 | Depends on The Fuse | ||
r. m. s | |||||
Rated Peak Withstand Current and Closing Current | kA | 50 | Depends on The Fuse | ||
Peak | |||||
Rated Breaking Current | Active Load Current | A | 630 |
| |
5% Active Load Current |
| 31.5 | |||
Closed Loop Current |
| 630 |
| ||
No-load Transformer | kVA | 315-1600 | |||
Cable Charging Current | A | 10 | |||
Transfer Current |
|
| 3150 | ||
Rated Short Circuit Breaking Current | kA |
| 31.5 | ||
Power Frequency Withstand Voltage | Phase and Ground 1 solation Fracture | kV | 42/48 | ||
Lightning Impulse |
| 75/48 | |||
Shape size(W×D×H) | mm | 900×900×2200 | |||
Working environment
1. The ambient air temperature : -5°C ~ +40°C;
2. Daily average temperature(Within 24h): ≤+35ºC
3. Altitude : less than 1000m;
4.. Relative humidity: within 24h, daily average value ≤ 95% , daily average vapor pressure≤ 2.2KPa;
monthly average value ≤ 90%, monthly average vapor pressure≤ 1.8KPa
* Ambient air is not significantly polluted by dust, smoke, corrosive and / or flammable gas, vapor or salt contami
