LZZB7-35 35kV Epoxy Cast Current Transformer for Switchgear
Model and its meaning

Summarize
In the field of electrical engineering, the importance of current transformers cannot be ignored. These devices play a crucial role in the safe and efficient operation of power systems, especially in indoor environments where high voltage is prevalent. This 15-40.5kV indoor current transformer, designed specifically for energy metering, current measurement, and relay protection, fully embodies the advanced technologies and engineering concepts required to ensure the reliability of power infrastructure.
This 15-40.5kV indoor current transformer features a fully enclosed epoxy resin casting structure, showcasing its robust and durable design. This structure not only enhances the transformer's durability but also ensures compliance with relevant standards such as GB20840.1-2010 and GB20840.2-2014. These standards are crucial for ensuring the safety and reliability of electrical equipment, especially in high-voltage applications. By adhering to these standards, manufacturers can guarantee that their products meet key performance indicators, thereby increasing user confidence.
Normal service condition
Installation location: Indoor, suitable for use in various environments such as power equipment and control rooms to ensure the safe and stable operation of the equipment.
Ambient temperature: Maximum temperature 40℃; minimum temperature -5℃; daily average temperature not exceeding 30℃, to adapt to climate changes in different seasons and ensure that the equipment works normally under various temperature conditions.
Atmospheric conditions: The atmosphere is free of severe pollution, ensuring that the equipment operates in a good environment, thereby improving its reliability and service life and reducing the possibility of failure.
Technical parameter
|
Product |
Rated primary |
Accuracy level combination |
Rated |
Rated short-term |
Rated dynamic |
|
LZZB7-35 |
15 |
0.2/0.5 |
15/30 |
2.4 |
6 |
|
20 |
3.2 |
8 |
|||
|
30 |
4.8 |
12 |
|||
|
40 |
6.4 |
16 |
|||
|
50 |
8 |
20 |
|||
|
75 |
12 |
30 |
|||
|
100 |
16 |
40 |
|||
|
150 |
24 |
60 |
|||
|
200 |
31.5/1 |
80 |
|||
|
300 |
|||||
|
400 |
|||||
|
500 |
31.5/2 |
80 |
|||
|
600 |
|||||
|
800 |
|||||
|
1000 |
40/3 |
100 |
|||
|
1200 |
|||||
|
1500 |
|||||
|
2000 |
Rated secondary current: 5A or 1A.
Rated insulation level: 40.5/95/185kV.
Structure and characteristics
This type of current transformer is of a fully enclosed structure cast with epoxy resin, featuring excellent insulation performance and moisture-proof capability. This product has a clear outline, an attractive appearance and is easy to clean on the surface. The base plate of the product is equipped with grounding bolts and four installation holes for installation.


