| Breaking Capacity: | High Voltage Circuit Breakers |
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| Operation: | Electric Type |
| Speed: | High-Speed Circuit Breaker |
| Customization: |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Audited Supplier Introduction:
This a new kind of circuit breaker with self-blast interrupter and spring operating mechanism. The lastest achieve-
arc gas-blast pressure adapter for breaking current extinguishing principle is employed, most of the energy for the
breaking of short-circuit current is required by the arc itself. Therefore, the demand for operating power is
reduced significanlty. The three phase interrupters are placed inside three metal enclosures respectively.
The circuit breaker can be machanically three phase gang-operated, from both a remote electrical control and a
local manual control. Type CT20-II spring operating mechanism, provided with the product, is a mechanism with
low operating power, minimun maintenance work need and high realiabiity.
Service Conditions:
Altitude:≤3000m
Humidity monthly:≤90%
Max .wind velocity:≤35m/s
Pollution class: class,IV class
Ambient air temperature:-35ºC~40ºC(It's satisfied under condition of -40ºC in heavy cold area)
Max .temperature difference daily: 25K
Earthquake withstand density:9 degree
Ice coating: ≤20mm
Max. radiance from sun: 1000 W/m2
Note: When product is used under the condition out of above range, user and manufacturer shall consult to
confirm.
Technical parameters:
| The Specifications of LW24-220 | |||||
| No. | Item | Unit | Data | ||
| 1 | Rated Voltage | KV | 220 | ||
| 2 | Rated Current | A | 3150 | ||
| 3 | Rated Frequency | HZ | 50 | ||
| 4 | Rated Short-circuit Withstand Current(4s) | KA | 40 | ||
| 5 | Rated Short-circuit Duration | S | 3 | ||
| 6 | Rated Short-circuit Breaking Current | Short-circuit Current | KA | 40 | |
| DC Shunt | - | 44% | |||
| 7 | Rated Short-circuit Making Current(peak) | KA | 100 | ||
| 8 | Rated Break Withstand Current(peak) | KA | 100 | ||
| 9 | Short-line Fault Breaking Current | KA | le*90% le*75% | ||
| 10 | Rated Out-of-phase Breaking Current | KA | le*25% | ||
| 11 | Rated Charging Line Breaking Current | A | 40 | ||
| 12 | Rated Insulating Level | 1 min P.F withstand voltage | Across open contacts | KV | 315 |
| Phase to phase | 275 | ||||
| Phase to earth | 275 | ||||
| Lightening impulse withstand voltage(peak) | Across open contacts | 750 | |||
| Phase to phase | 650 | ||||
| Phase to earth | 650 | ||||
| 5 min zero-pressure withstand voltage test(virtual value) | Across open contacts | 145 | |||
| Phase to phase | 145 | ||||
| 13 | First Pole to Clear Factor | - | 1.5 | ||
| 14 | Rated Operate Sequence | - | O-0.3S-CO-180S-CO; CO-15S-CO | ||
| 15 | Full Breaking | MS | ≤60 | ||
| 16 | SF6 Gas Rated Pressure(20°C) | Mpa | 0.5 | ||
| 17 | Alarming Pressure | 0.45 | |||
| 18 | Locking Pressure | 0.4 | |||
| 21 | Closing Time | MS | 75±8 | ||
| 22 | Closing&Opening Time | Primary opening time | MS | 30 | |
| OC Time | 280~300 | ||||
| Closing Time | 30 | ||||
| CO Time | ≤60 | ||||
| Second opening time | 35 | ||||
| 23 | Control Circuit Voltage | V | AC/DC,110/220 | ||
| 24 | CO Loop Voltage | V | AC/DC,110/220 | ||
| 25 | CO Loop Current | A | 2 | ||
| 26 | Motor Voltage | V | AC/DC,110/220 | ||
| 27 | Motor | W | 600 | ||
| 28 | Heater Voltage | V | AC220 | ||
| 29 | Mechanical Duration | Times | 10,000 | ||
| 30 | Radio Interrupting Voltage | uV | ≤500 | ||
| 31 | Electrical Life of Rated Short-circuit Breaking Current | Times | 20 | ||
| 32 | Protection Grade of Enclosure | - | IP4X | ||
| 33 | Creepage Distance | MM | 5040 | ||
| NOTE: If there is any question or problem does not comply with your local standards, feel free to contact us. | |||||
| 1. | Pre sale service |
| a. | make technical solution |
| b. | send quotation, technical data sheet and drawing |
| c. | prepare power transmission plan, testing plan and shipment plan |
| 2. | In sale service |
| a. | supervise the manufacturing schedule totally in accordance with the plan |
| b. | send photos to customer during every manufacturing process(hold point) |
| c. | inform the customer one week before testing. |
| 3. | After sale service |
| a. | installation and commissioning, training the workers |
| b. | quick response within 12 hours any time |
| c. | provide 12 months guarantee period normally. |
| 1. Q: | What is your delivery time ? |
| A: | Depend on the type of transformer. |
| 2. Q: | What is your payment term? |
| A: | 30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it. |
| 3. Q: | What kind of standard you follow? |
| A: | IEC, ANSI, CSA, GB, etc |
| 4. Q: | What kind of supporting documentation you can provide normally |
| A: | Quotation, outline drawing, manufacturing plan, quality control plan testing plan, financial report, type test report(KEMA, CESI),reference list, etc |
| 5. Q: | What is your normal warranty period? |
| A: | 12 months after transformer operation. |
| 6. Q: | Can u do installation and commission in user's site? |
| A: | Yes, we can send our installation team to user's country for service. |
| 7. Q: | Do you have any experience in this kind of transformer? |
| A: | Yes, we can provide reference list for check. |
Suppliers with verified business licenses
Audited Supplier 
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