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The ring main unit equipped with the FZN-12/630 type vacuum load switch should be able to meet all the corresponding technical requirements of the FZN-12/630 type vacuum load switch.
1. Ingoing cabinet scheme The main circuit in the cabinet has one FZN-12/630 type vacuum load switch, which is equipped with an isolating knife, and optionally a grounding knife, all mounted on a single frame and interlocked with each other. Thus, operations for connecting the busbar, isolation, and earthing can be realized. Inside the cabinet, elements such as CT and PT can be flexibly installed.
2. Outgoing cabinet scheme The main circuit in the cabinet has one FZN-12/630 type vacuum load switch, a fuse with striker (acting as a disconnecting switch), and a grounding knife, which also allows for three-position operation. Inside the cabinet, elements such as CT/PT and YH series surge arresters can be flexibly installed, and sometimes the metering cabinet can be omitted. Both incoming and outgoing cabinets are equipped with insulated protective baffles linked to the grounding switch, and mechanical interlocking is used between each switch and the baffle and cabinet door, achieving the
The ring main unit equipped with the FZN-12/630 type vacuum load switch should be able to meet all the corresponding technical requirements of the FZN-12/630 type vacuum load switch.
1. Ingoing cabinet scheme The main circuit in the cabinet has one FZN-12/630 type vacuum load switch, which is equipped with an isolating knife, and optionally a grounding knife, all mounted on a single frame and interlocked with each other. Thus, operations for connecting the busbar, isolation, and earthing can be realized. Inside the cabinet, elements such as CT and PT can be flexibly installed.
2. Outgoing cabinet scheme The main circuit in the cabinet has one FZN-12/630 type vacuum load switch, a fuse with striker (acting as a disconnecting switch), and a grounding knife, which also allows for three-position operation. Inside the cabinet, elements such as CT/PT and YH series surge arresters can be flexibly installed, and sometimes the metering cabinet can be omitted. Both incoming and outgoing cabinets are equipped with insulated protective baffles linked to the grounding switch, and mechanical interlocking is used between each switch and the baffle and cabinet door, achieving the
| No. | Project | Unit | Data | ||
| 1 | Rated voltage / Maximum working voltage | kV | October 12 | ||
| 2 | Rated Current | A | 630 | ||
| 3 | Main Busbar Current - Incoming Cabinet | A | 630 | ||
| 3 | Main Busbar Current - Outgoing Cabinet | A | 125 | ||
| 4 | Rated Short-Time Withstand Current | kA | 20 | ||
| 5 | Rated Short-Circuit Duration | s | 4 | ||
| 6 | Rated Peak Withstand Current | kA | 50 | ||
| 7 | Rated Short-Circuit Making Current | kA | 50 | ||
| 8 | Rated Withdrawable Active Load Current | A | 630 | ||
| 9 | Closed Loop Breaking Current | A | 630 | ||
| 10 | Rated Cable Charging Current | kA | 20 | ||
| 11 | Grounding Switch Rated Short-Time Withstand Current | kA | 20 | ||
| 12 | Grounding Switch Rated Short-Circuit Duration | s | 4(2) | ||
| 13 | Grounding Switch Rated Peak Withstand Current | kA | 50 | ||
| 14 | Grounding Switch Rated Short-Circuit Making Current | kA | 50 | ||
| 15 | 1 min Rated Power Frequency Withstand Voltage - Between Phases, Between Phase and Ground, Vacuum Load Switch Gap | kA | 42 | ||
| 15 | 1 min Rated Power Frequency Withstand Voltage - Isolator Gap | kV | 48 | ||
| 16 | Rated Lightning Impulse Withstand Voltage - Between Phases, Between Phase and Ground, Vacuum Load Switch Gap | kV | 75 | ||
| 16 | Rated Lightning Impulse Withstand Voltage - Isolator Gap | kV | 85 | ||
| 17 | Mechanism Life - Vacuum Load Switch | Time | 10000 | ||
| 17 | Mechanism Life - Grounding Switch (Knife), Isolator (Knife) | Time | 2000 | ||
| 18 | Transfer Current | A | 3150 | ||
| No. | Project | Unit | Data | ||
| 1 | Rated voltage / Maximum working voltage | kV | October 12 | ||
| 2 | Rated Current | A | 630 | ||
| 3 | Main Busbar Current - Incoming Cabinet | A | 630 | ||
| 3 | Main Busbar Current - Outgoing Cabinet | A | 125 | ||
| 4 | Rated Short-Time Withstand Current | kA | 20 | ||
| 5 | Rated Short-Circuit Duration | s | 4 | ||
| 6 | Rated Peak Withstand Current | kA | 50 | ||
| 7 | Rated Short-Circuit Making Current | kA | 50 | ||
| 8 | Rated Withdrawable Active Load Current | A | 630 | ||
| 9 | Closed Loop Breaking Current | A | 630 | ||
| 10 | Rated Cable Charging Current | kA | 20 | ||
| 11 | Grounding Switch Rated Short-Time Withstand Current | kA | 20 | ||
| 12 | Grounding Switch Rated Short-Circuit Duration | s | 4(2) | ||
| 13 | Grounding Switch Rated Peak Withstand Current | kA | 50 | ||
| 14 | Grounding Switch Rated Short-Circuit Making Current | kA | 50 | ||
| 15 | 1 min Rated Power Frequency Withstand Voltage - Between Phases, Between Phase and Ground, Vacuum Load Switch Gap | kA | 42 | ||
| 15 | 1 min Rated Power Frequency Withstand Voltage - Isolator Gap | kV | 48 | ||
| 16 | Rated Lightning Impulse Withstand Voltage - Between Phases, Between Phase and Ground, Vacuum Load Switch Gap | kV | 75 | ||
| 16 | Rated Lightning Impulse Withstand Voltage - Isolator Gap | kV | 85 | ||
| 17 | Mechanism Life - Vacuum Load Switch | Time | 10000 | ||
| 17 | Mechanism Life - Grounding Switch (Knife), Isolator (Knife) | Time | 2000 | ||
| 18 | Transfer Current | A | 3150 | ||
Ambient temperature upper limit +40°C, lower limit -25°C; Altitude does not exceed 4000m; Relative humidity of the air does not exceed 95% daily average, 90% monthly average; Daily average water vapor pressure does not exceed 2.2×10⁻³Mpa, monthly average does not exceed 1.8×10⁻³Mpa; The surrounding air is not subject to corrosion or significant pollution by combustible gases, water vapor, etc.; No frequent violent vibrations.
Ambient temperature upper limit +40°C, lower limit -25°C; Altitude does not exceed 4000m; Relative humidity of the air does not exceed 95% daily average, 90% monthly average; Daily average water vapor pressure does not exceed 2.2×10⁻³Mpa, monthly average does not exceed 1.8×10⁻³Mpa; The surrounding air is not subject to corrosion or significant pollution by combustible gases, water vapor, etc.; No frequent violent vibrations.
After unpacking, all insulating parts should be inspected. For components that have obviously absorbed moisture, they should be removed, placed in an oven at 70 - 80°C, and baked for 48 hours. After removal, they should be installed and re-adjusted. During storage of the product, if dampness or corrosion is found, it should be cleaned immediately, and after cleaning, protective measures should be taken. Routine maintenance inspections should be conducted for the operating ring main unit:
(1). Vacuum degree of the vacuum arc chamber;
(2). Condition of contact wear;
(3). Whether mechanical fasteners are loose;
(4). Mechanical and electrical parameters such as opening overtravel.
(5). Whether the operating rotation is flexible;
(6). Whether the interlocking is reliable;
(7). Whether all parts, especially the insulating parts, are clean. A comprehensive inspection and adjustment of the ring main unit should be carried out in the following situations:
(01). Annual routine inspection and cleaning;
(02). After every 2000 operations of the load switch.
After unpacking, all insulating parts should be inspected. For components that have obviously absorbed moisture, they should be removed, placed in an oven at 70 - 80°C, and baked for 48 hours. After removal, they should be installed and re-adjusted. During storage of the product, if dampness or corrosion is found, it should be cleaned immediately, and after cleaning, protective measures should be taken. Routine maintenance inspections should be conducted for the operating ring main unit:
(1). Vacuum degree of the vacuum arc chamber;
(2). Condition of contact wear;
(3). Whether mechanical fasteners are loose;
(4). Mechanical and electrical parameters such as opening overtravel.
(5). Whether the operating rotation is flexible;
(6). Whether the interlocking is reliable;
(7). Whether all parts, especially the insulating parts, are clean. A comprehensive inspection and adjustment of the ring main unit should be carried out in the following situations:
(01). Annual routine inspection and cleaning;
(02). After every 2000 operations of the load switch.
1. Are you a trading company or manufacturer ?
We are a professional factory with 10 years experience in the field of High and low Voltage switchgears, Substation, transformers, cable distribution box and various electrical equipment, such as vacuum circuit breaker, load break switch etc.
Our factory is the excellent supplier of State Grid Corporation od China.
2. Do you accept customized serveice?
We offer OEM/ODM service, can print your logo on product. our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .
3. What is your MOQ?
Our MOQ is 1 piece.
4. How long is your delivery lead time?
It depends on your product requirement and quantity. Generally , 5~10 working days is avaliable.
5. How do you solve quality problems?
Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse. we will make a satisfied soluton within 2 days.
6. What is your payment terms?
30%T/T in adcance, 70% before shipment. West union, L/C are also acceptable.
1. Are you a trading company or manufacturer ?
We are a professional factory with 10 years experience in the field of High and low Voltage switchgears, Substation, transformers, cable distribution box and various electrical equipment, such as vacuum circuit breaker, load break switch etc.
Our factory is the excellent supplier of State Grid Corporation od China.
2. Do you accept customized serveice?
We offer OEM/ODM service, can print your logo on product. our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .
3. What is your MOQ?
Our MOQ is 1 piece.
4. How long is your delivery lead time?
It depends on your product requirement and quantity. Generally , 5~10 working days is avaliable.
5. How do you solve quality problems?
Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse. we will make a satisfied soluton within 2 days.
6. What is your payment terms?
30%T/T in adcance, 70% before shipment. West union, L/C are also acceptable.
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