The LW38-126 open combination electrical appliance is more capable of meeting the needs of the domestic electricity market compared to similar products abroad. Our company can not only design flexible and diverse layout forms according to the different needs of users, but also implement the general contracting of primary equipment (including interval support busbars, towers, etc.) and secondary equipment for the entire substation.
LW38-126 open type combined electrical apparatus has advanced structure and excellent performance, and all technical parameters fully meet the requirements of GB and IEC standards. This product has the characteristics of compact structure and small footprint of enclosed composite electrical appliances, as well as the advantages of cheap price and convenient maintenance of open electrical appliances. Its footprint is reduced by about 60% compared to conventional power stations, making it particularly suitable for use in urban networks, mountainous areas, and industrial and mining enterprise substations.  

Structure Introduction
The LW38-126/145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel casing) has two layout forms: indoor and outdoor. Each layout form can be divided into circuit breaker interval and measurement and protection interval. Each interval consists of two main parts: a fixed part and a movable part. The fixed parts include isolation plugs, grounding switches, and local operation control cabinets. The movable part is a movable electrical module that assembles different electrical components together based on a small car. sever
The movable part of the circuit breaker interval is composed of self powered SF6 circuit breakers, current transformers, and isolation plugs. The movable part of the measurement and protection interval is composed of voltage transformers, lightning arresters, and isolation plugs.

Main Features
LW38-126/145 type self powered outdoor SF6 circuit breaker (stainless steel casing) is a new generation of self powered SF6 circuit breaker, equipped with a spring operated mechanism. The structural form of the circuit breaker interval and the measurement and protection interval is consistent. Both the car and the grounding switch are equipped with electric operating mechanisms, including circuit breakers, which can be operated locally in the control cabinet. The secondary wiring from the on-site control cabinet to each component is plug-in, and an intelligent control cabinet can also be provided to achieve unmanned operation. The one-time wiring method is flexible and does not affect the user's continuous power supply during maintenance. The overall layout is simple, beautiful, and suitable for both indoor and outdoor use.

Usage environment
Environmental temperature: -30 ℃~+40 ℃
Wind pressure: ≤ 700Pa
Altitude: ≤ 3000m
Seismic intensity: ≤ 8 degrees
Air pollution level: Level III
Ice thickness: 10mm

Ordering Instructions
The layout and installation method of LW38-126/145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel shell) are indoor or outdoor. Rated voltage, rated current, and short-circuit breaking current. The model, name, current ratio, voltage ratio, number of secondary coils, accuracy level, and rated output of current transformers, voltage transformers, and lightning arresters. Number and operation mode of grounding switches. Are towers and interval support busbars configured for outdoor layout. Other special requirements of the user can be negotiated. Comparison between conventional layout and LW38-126 layout
Taking a substation with a single busbar segmented 6-way incoming and outgoing lines and 2 main transformers as an example, the comparison content is shown in the table below.  

2. Comparison of cross-sections between conventional layout and LW38-126 layout

LW38-126/145 General Technical Parameters

LW38-126 145 type self powered outdoor sulfur hexafluoride circuit breaker (stainless steel casing)