LW38-40.5 (G) - CJ elevated porcelain column outdoor AC high-voltage sulfur hexafluoride circuit breaker (hereinafter referred to as the circuit breaker) is a control and protection equipment for outdoor installation, three-phase, AC 40.5kv level high-voltage transmission and transformation systems using SF6 gas as arc extinguishing and insulation medium. It can be used to split and close rated current and fault current, switch capacitor groups and conversion lines, especially suitable for frequent operation, and can also be used as a circuit breaker for interconnection.

This circuit breaker complies with the requirements of IEC "High Voltage AC Circuit Breakers" and GB1984 "High Voltage AC Circuit Breakers".

LW38-40.5 (G) - CJ Elevated Ceramic Column Outdoor AC High Voltage SF6 Circuit Breaker Model Meaning


Environmental conditions for product use
a. Environmental temperature:
Maximum temperature+40 ℃
Minimum temperature -30 ℃
b. Relative humidity:
Daily average relative humidity ≤ 90%
Monthly average relative humidity ≤ 95%
c. Altitude:
Normal operating conditions: altitude not exceeding 1000m (referred to as flat prototype);
Special usage conditions: altitude not exceeding 3000m (referred to as high prototype);
d. The wind speed does not exceed 34m/s (corresponding to 700Pa on the surface of the cylinder);
e. The seismic intensity shall not exceed 8 degrees (horizontal acceleration 0.25g, vertical acceleration 0.125g);
f. Air pollution level: Level IV; Minimum nominal creepage distance: 31mm/kV

LW38-40.5 (G) - CJ Elevated Ceramic Column Outdoor AC High Voltage Sulfur Hexafluoride Circuit Breaker Main Technical Parameters
1. Main technical parameters are shown in Table 1

The circuit breaker is equipped with CT14 and CT35 spring buckle mechanisms, and its electrical schematic, wiring diagram, main technical parameters, and installation form of the mechanism are center mounted

Table 2 Main Technical Parameters of Institutions

LW38-40.5 Elevated Ceramic Column SF6 Circuit Breaker with Built in Current Transformer Dimensions (Stainless Steel Shell)

The circuit breaker can be equipped with LR □ -40.5 built-in current transformers, and each current transformer can provide multiple small ones. The wiring scheme can be found on the transformer nameplate and electrical wiring diagram, with the main technical parameters
(Note: Current transformers can be equipped with protection levels and can be reinforced).

Main technical parameters of current transformers

Structure Introduction
3.1 SF6 gas is used as insulation and medium, with superior breaking and insulation performance, and no fire hazard.
3.2 The arc is extinguished using a compressed air method, which is reliable in breaking and has a large breaking capacity.
3.3 The circuit breaker adopts a compact CT14-CT35 spring operated mechanism, achieving the miniaturization of 40.5kV vacuum circuit breaker products;
3.4 The circuit breaker adopts an elevated porcelain column structure, which is compact and beautiful. There are few insulation components and sealing surfaces, making it easy to control the amount of water and leakage rate.
3.5 Adopting overall packaging transportation, easy installation and operation, and low maintenance workload.
Appearance and installation dimensions of circuit breakers
4.1 Appearance and Installation Foundation Dimensions
4.2 The installation foundation of the circuit breaker shall withstand a vertical impact force of not less than 35kN
Ordering Instructions
6.1 When placing an order, please indicate the model, name, rated voltage, rated current, and rated short-circuit breaking current of the circuit breaker, as well as the model, name, energy storage motor, and opening/closing coil of the spring mechanism used
Rated voltage and rated current.
6.2 This circuit breaker can be equipped with one set of current transformers per phase, with a maximum of four secondary transformers per set. The installation of the transformers is shown in Figure 1 or can be selected by the user at their own location. Please specify the installation location when placing an order
Order the model, quantity, transformation ratio, accuracy level, and installation method of the current transformer.
6.3 If the user has other requirements, please contact our company directly.