126kV 145kV high voltage SF6 circuit breaker

Product introduction：

LW36-126(145) (W) circuit breaker is suitable for single-phase operation, three-phase electrical linkage and three-phase mechanical linkage, Grid frequency 50 / 60Hz, neutral grounded system and neutral ungrounded system, C2 level of back-to-hack capacitor bank and C2 level of no-load line-Charing breaking capacity and no-load cable-charging breaking capacity.  products have reached the leading domestic and international advanced level in advanced technology and quality reliability.

By adopting SF6 gas as the arc extinguisher and insulation medium, using advanced self-energy power arc extinguishing technology and being equipped with new type spring actuating mechanism, this product has features such as long electrical end-durance, less operating power, low noise, and high reliability. it has a simple structure, small size, long maintenance-free cycle. In the current trend of oil-free and high-capacity electricity equipment’s.

Main characteristic：

• Reliable breaking performance: This circuit breaker can consecutively break 40kA short circuit current for 22 times without overhaul; Neutral grounded system and neutral ungrounded system, first-pole-to-clear factor 1.3/1.5; C2 level of no-load line-charging breaking capacity and no-load cable-charging breaking capacity, C2 level of the back-to-back capacitor bank breaking capacity, no restrike.

• Reliable mechanical operating performance: The mechanical life of the circuit breaker under continuous operation can reach up to 10000 times M2 class.

•  Reliable seismic performance: Comply with lEEE693-2018 1.0g high seismic level and ETG Chile seismic standard requirements.

• Reliable current-carrying function: After 3780A temperature-rise test, the temperature-rise values at all points still have much margin.22.

•  Reliable insulation ability: creepage distance of external insulation>31mm/kV; strong pollution resistance; suitable for safe running in hard environments with an altitude of no more than 3000m.

• Reliable sealing performance. it is guaranteed that the SF6 gas has an annual gas leakage rate of far less than 0.5%.

• Strict dehumidification process for component parts of the product the SF6 water content is far lower than similar products.

• Simple structure, long overhaul cycle, convenient on-site installation and debug, safe and reliable running experience of more than 25000 sets, applied worldwide.

• Optional phase closing device.

• Self-energy arc extinguishing principle is adopted for the circuit breaker, The operating power is low.The valve plate of the arc extinguishing compartment is made of new-type lightweight Zinc-base alloy. Compared with the traditional materials adopted for similar products, this material has more stable and reliable gas feature and breaking performance;

• The spout is made of import PTFE mixed with other micro-components. lt has stable breaking performance and strong ablation resistance.

• The unique locking-up measure is used for the insulating pulling rod of the breaker to ensure more reliable running of the breaker.

• Spring actuating mechanism with small operating power, light weight, and low noise is adopted for zero leakage and high reliability, High-strength cast aluminum machine fame is adopted for high strength, zero welding stress, and pleasing exterior appearance. The important component pats in the mechanism are forged with quality alloy steel for high strength and abrasion resistance, which can ensure low fault rate under frequent operation of the breaker.

• The product has a novel and lively exterior appearance and compact structure, The installation foundation frame is made of thick steel board being overall bended. Hot zinc impregnation is adopted for the surface, The exposed fastening pieces are high-strength hot-galvanized bolts, The interval driving connecting rods are made of high-strength aluminum sectional material or stainless stool sectional malarial, The case of the mechanism is made of stainless steel ,The product has excellent ant-corrosion performance.

Main technical parameters:

Instructions on placing orders  : 

• Model and format of the circuit breaker.

• Rated electrical parameters (voltage, current, breaking current, etc).

• Working conditions for using (environment temperature, altitude, and environment pollution level).

• Rated control circuit electrical parameters (Rated voltage of energy-store moter and Rated voltage of opening, closing coil).

• Names and quantities of spare items needed, parts and special equipment and tools (to be otherwise ordered).

• The wire connecting direction of the primary upper terminal.

What are the performance characteristics of the canister circuit breaker？

High Insulation Performance：

• High Insulation Performance: Whether using sulfur hexafluoride (SF6) gas or insulating oil as the insulating medium, tank-type circuit breakers possess a high level of insulation. They can withstand system operating voltages and various overvoltages, ensuring the safety of both equipment and personnel.

Strong Arc-Quenching Capability：

• Strong Arc-Quenching Capability: The special design of the arc quenching chamber and the arc-quenching medium enable tank-type circuit breakers to rapidly extinguish arcs when interrupting short-circuit currents. This reduces the burn damage to the contacts, extends the electrical life and interrupting performance of the circuit breaker, and lowers the downtime and maintenance costs associated with faults.

Good Environmental Adaptability：

• Good Environmental Adaptability: The enclosed tank structure provides excellent resistance to contamination, moisture, and windblown sand. This allows the circuit breaker to operate stably in various geographical environments and climatic conditions, making it suitable for outdoor substations, industrial and mining enterprises, and other locations.