Basic Info.
Model NO.
LW8-40.5KV/1250A
Breaking Capacity
High Voltage Circuit Breakers
Operation
Energy-storage Type
Speed
High-Speed Circuit Breaker
Arc-extinguishing Medium
SF6
Function
Overcurrent Protection
Transport Package
Wooden Case
Specification
wooden case
Product Description
overview The product has excellent breaking performance, using pressurized arc chamber, long electric life, under rated voltage continuous break 40KA short circuit current up to 20 times without maintenance, do not replace sulfur hexafluoride gas, machine
High mechanical reliability, mechanical life of more than 6000 times, can operate frequently; Each unit can be equipped with 12 current transformers for user's choice. The product uses the new MKZMSF6 pointer density meter,
Pressure gauge readings are not affected by temperature changes, easy to use.
Lw8-40.5 horizontal SF6 circuit breaker can be numbered as LW8(A)-40.5, LW16-40.5. Lw34-40.5; The middle type can be numbered as LW8(A)-40.5T. Lw16-40.5t.
This type of circuit breaker is three-phase AC 50Hz outdoor high voltage electrical equipment, suitable for the control and protection of 40.5kV distribution system, can also be used for connecting circuit breakers and opening and closing capacitor banks. the
CT14 spring machine is used for crystal production. The circuit breaker conforms to the national standard GB1984-1989 "AC high voltage circuit breaker" and the international Electrotechnical Commission standard IEC56, IEC62271-100 "high
Voltage ac circuit breaker requirements.
Use requirement1. Altitude: not more than 2500; M; Plateau 4000 meters;
2. Ambient temperature: -30°C-+40°C (special requirements -40°C- -+40°C);
3. Relative humidity: daily average not more than 95%, monthly average not more than 90% (25%C);
4. Wind speed: no more than 35 m/s;
5. Pollution grade is II; The creepage distance of porcelain bushing is 1050mm (1320mm) (nominal creepage distance is not less than 25mm /kV).
6. No flammable substances, explosion danger, chemical corrosion and violent vibration.The main featuresA. Excellent breaking performance, short arc burning time, long electrical life, under rated voltage continuous breaking 25 kiloampoules 20 times without maintenance, do not replace sulfur hexafluoride gas;
B. Reliable insulation, pressure can withstand 40.5 kv for 10 minutes at zero gauge pressure;
C. High mechanical reliability, strong closing ability, and frequent operation;
D. Open and close capacitor bank current 400 amps without reignition;
E. Cut the long line of 25, 50 km without reburning;
F. Simple structure, small volume, long cycle without maintenance.Main technical parameters Overall dimensionsnumber | project | unit | parameter |
1 | The rated voltage | KV | 24 | 36 | 40.5 |
2 | Rated insulation level | Lightning shock voltage withstand (full wave peak value) | KV | 150 | 170 | 200*/215 (fracture) 185 |
| Power frequency withstand voltage (1 min) | KV | 65 | 75 | 95 |
3 | Rated current | A | 1250/1600/2000/2500 |
4 | Mechanical life | time | 10000 |
5 | Sulfur hexafluoride gas rated pressure (gauge pressure at 201 hours) | MPa | 0.45 |
6 | Locking pressure (gauge pressure at 20°C) | MPa | 0.40 |
7 | Minimum operating ambient temperature | . C | -30 |
8 | Rated short-circuit breaking current | KA | 20/25/31.5/40 |
9 | Rated short circuit closing current (peak value) | KA | 50/63/80/100 |
10 | Rated short-time withstand current (thermal stable current) | KA | 20/25/31.5/40 |
11 | Rated peak tolerance current (dynamic stable current) | KA | 50/63/80/100 |
12 | Rated out-of-step breaking current | KA | 50/63/80/100 |
13 | Rated short circuit duration | s | 4 |
14 | Closing time (at rated operating voltage) | ms | ≤80 | ≤80 | ≤100 |
15 | Switching time (at rated operating voltage) | ms | ≤65 | ≤65 | ≤70 |
16 | Rated operation order | | 0-0.3S-co-180S-co |
17 | Rated opening and closing current of a single capacitor bank | A | 400 |
18 | In a flat rate | % / year | ≤1 |
19 | Sulfur hexafluoride gas moisture content (at 20°C) | PPm(VM) | ≤150 |
20 | Rated operating voltage of CT14 spring operating mechanism | V | DC:110,220AC: 110, 220, 380 |
21 | Closing coil, opening coil voltage | V | DC:110,220AC: 110, 220, 380 |
22 | Energy storage motor voltage | V | DC:220 AC: 220 |
23 | Speed of closing | m/s | 3.2±0.2 | 3.2±0.2 | 3.2±0.2 |
24 | Break-brake speed | m/s | 3.4±0.2 | 3.4±0.2 | 3.4±0.2 |
25 | Sulfur hexafluoride gas weight | kg | 7-8 |
26 | Weight of circuit breaker (including operating mechanism) | kg | 800/900/1400 |
Address:
Zhejiang Wenzhou Yueqing, Wenzhou, Zhejiang, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Electrical & Electronics, Industrial Equipment & Components, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Security & Protection
Company Introduction:
Zhejiang Zhuowoma Electric Technology Co., Ltd. is a diversified enterprise specialized in the development, manufacturing, sales andservice of high-voltage power transmission and distribution. Products covering the industry of high-voltage electrical appliances, electric transmission and distribution equipment, construction, electric automation, etc, with switchgear series, 10-35KV European type series, American type power cable distributi on box series, high-voltage circuit breaker series, high-voltage load switch series, high-voltage fuse series, high-voltage isolator series, high-tension lightning arrester series, high-voltagetransformer series, ceramic wall brushing/insulator series and full high-voltage set accessories. Factory have passed the ISO9001: 2000 quality management system certification and products have access to the production licence with "CCC" certification.
Professional technicians create excellent quality for you, and dedicated teamwork provides you with excellent comprehensive services. The company always implements the business philosophy of "people-oriented, integrity and win-win", and adheres to the principle of "customer first, maintaining capital and small profits". Provide excellent products and service to new and old customers.
Our service brings win-win cooperation:
1. Quick response of pre-sales helps you get your orders.
2. Excellent productions service let you known each step we made.
3. Reliable quality solves your after-sales headache.
4. Long-term quality assurance ensures your purchase without hesitation.