20kV JDZX11‑20 Cast Resin Potential Transformer Indoor Instrument VT
Model and its meaning

Summarize
The advantages of 15-35KV indoor voltage transformers are mainly reflected in four core dimensions: environmental adaptability, safety protection, operation and maintenance costs, and installation flexibility, which can well match the needs of complex indoor power consumption scenarios.
1. Strong environmental adaptability and high stability: The indoor environment can avoid the impact of harsh outdoor conditions, so this type of current transformer has better operational stability.
2. High level of safety protection and reduced risk: The safety design is more comprehensive, taking into account the frequent activities of people indoors.
3. Low operation and maintenance costs and convenient management: Its structure and usage scenarios determine that its operation and maintenance needs are simpler.
4. Good size adaptability and flexible installation: It fits the characteristics of indoor space layout.
Normal service condition
Installation site: Indoor.
Ambient temperature: Maximum air temperature 40℃ ; The minimum temperature is -5℃ . The daily average temperature does not exceed 30℃ .
Atmospheric conditions: There is no severe pollution in the atmosphere.
Technical parameter
|
Product |
Rated voltage ratio(kV) |
Accuracy level or a combination |
Rated |
Extreme |
Rated insulation level(kV) |
|
JDX11-20 |
20/√3/0.1√3/0.1/3 |
0.2/6P(3P) |
30/100 |
500 |
24/65/125 |
|
0.5/6P(3P) |
80/100 |
||||
|
5√3/0.1√3/0.1√3/0.1/3 |
0.2/0.2/6P(3P) |
15/15/100 |
300 |
||
|
0.2/0.5/6P(3P) |
20/20/100 |
||||
|
0.5/0.5/6P(3P) |
30/30/100 |
Structure and characteristics
This type of voltage transformer features a pillar-type structure, employing a fully enclosed epoxy resin casting process. It is resistant to pollution and moisture, making it suitable for use in tropical regions. Its excellent weather resistance and anti-aging properties ensure stability under various environmental conditions. The transformer requires no special maintenance; only periodic cleaning of surface contaminants is necessary to maintain optimal operating condition and extend its service life. A terminal box is installed at the secondary output terminals of the transformer. The terminal box has a hole on the front and side to mate with the output terminals for wiring, ensuring safety, reliability, connection stability, and ease of use. The product base plate has a grounding bolt and four mounting holes for flexible installation and fixation, adapting to different installation requirements.


JDG4-0.5 type voltage transformer,Accuracy class 0.5,designed for voltage measurement and relay protection in indoor AC circuits