High LW36 - 145 SF6 Circuit Breaker
Product Introduction
his product uses SF6 gas as the arc extinguishing and insulation medium, adopts the most advanced self energy arc extinguishing technology in the world, and is equipped with a new type of spring operating mechanism. It has the characteristics of long electrical life, low operating power, low noise, and high reliability. Its structure is simple, small in size, and has a long maintenance cycle. It is the most reliable product in high-altitude areas or 132KV power systems, and can replace imported products of the same type.
The circuit breaker adopts a three-phase porcelain pillar single break structure, with a spring operated mechanism for the three phases arranged in the center and linked by the three phases, resulting in a novel and exquisite appearance. The circuit breaker uses SF6 gas as the insulation and arc extinguishing medium. During operation, the three poles of the circuit breaker are connected to SF6 gas, and a pointer type density relay is used to monitor its pressure and density progress. Due to the use of self powered arc extinguishing principle and optimized design in the circuit breaker motion system, the mechanical efficiency has been effectively improved and the operating power has been minimized to the greatest extent possible; Excellent breaking performance and long electrical lifespan
The installation chassis and support are made of high-quality steel plates that are bent as a whole, and the surface treatment is all hot-dip galvanized. All exposed fasteners are made of high-strength materials and hot-dip galvanized or use stainless steel standard parts. The outer shell of the mechanism box is made of stainless steel material, so the product has excellent corrosion resistance; High mechanical reliability, capable of frequent operation;
Product Parameters
| Serial Number | Name | Unit | Value | ||
| 1 | Nominal voltage | KV | 550 - 420 - 330 | ||
| 2 | Nominal current | A | 5000 | ||
| 3 | Nominal frequency | HZ | 50 | ||
| 4 | Nominal short - circuit | KA | 63 | ||
| 5 | Nominal short - time withstand current (3s) | KA | 171 | ||
| 6 | Nominal peak withstand current | KA | 171 | ||
| 7 | Nominal making current | KA | 56.7/47.25 | ||
| 8 | Breaking current in the large zone | KA | 15.8 | ||
| 9 | Permissible asymmetry factor of current | / | 500 | ||
| 10 | Nominal line charging and discharging current | A | 0.5-15 | ||
| 11 | Transformer no - load breaking current | A | 1.3 | ||
| 12 | Phase factor | / | 0 - 0.3s - C0 - 180s - C0 | ||
| 13 | Nominal operating sequence | / | 9±1 | ||
| 14 | Unlocking speed | m/s | 3±0.5 | ||
| 15 | Stroke speed | m/s | ≤50 | ||
| 16 | Opening time | m/s | ≤30 | ||
| 17 | Nominal unlocking time | m/s | ≤100 | ||
| 18 | Nominal stroke time | m/s | ≤30 | ||
| 19 | Duration time | m/s | ≤50 | ||
| 20 | Separation time | m/s | > 300 (without current in the strokes) | ||
| 21 | Phase synchronization | including stroke error |
ms ms |
||
| 22 | Simultaneous phase breaking | including stroke error |
ms ms |
||
| 23 | Number of breaking operations per phase | times | 2 | ||
| 24 | Operating mode | Phase - splitting operation | |||
| 25 | SF6 gas allows daily air extraction from | ||||
| 26 | Each disconnector is filled with SF6 gas weight | kg | |||
| 27 | Weight of each disconnector | kg | |||
| 28 | Total phase resistance | μΩ | |||
| 29 | Capacitance of parallel effect at each bend | pF | |||
| 30 | Partial discharge voltage | μV | |||
| 31 | Mechanical service life | times | 6000 | ||
| 32 | Service life of the circuit breaker under rated short - circuit making | times | 20 | ||
| 33 | Rated SF6 gas (relative) pressure (20°C) | MPa | 0.6 | ||
| 34 | Lightning distribution device | Hydropneumatic mechanism STY - 16 | |||
| 35 | Comply with the criteria | GB1984 and IEC62271 - 100 | |||
Product size
