JDZJ‑3,6,10 3‑10kV Instrument VT Epoxy Potential Transformer
Model and its meaning

Summarize
Voltage transformers (VTs) have many advantages in power systems, including the following:
Safety: Voltage transformers can reduce high voltages to safe levels, facilitating measurement and monitoring, and protecting equipment and personnel.
Precise measurement: Voltage transformers can provide high-precision voltage measurement, ensuring the accuracy of power system monitoring and control.
Isolation function: The voltage transformer provides electrical isolation between the high-voltage and low-voltage sides, preventing high voltage from damaging the measurement equipment and control system.
Strong adaptability: Voltage transformers can be applied to various power systems, including AC and DC systems, to meet the needs of different occasions.
Improve system stability: By monitoring and controlling voltage, voltage transformers help improve the stability and reliability of power systems.
Easy to automate and monitor remotely: Voltage transformers can be integrated with automation and monitoring systems to facilitate remote monitoring and data collection.
Reduced costs: By using voltage transformers, the need for high-voltage measurement equipment can be reduced, thereby reducing overall system costs.
Multifunctionality: Some voltage transformers can also integrate other functions, such as frequency measurement, phase measurement, etc., to provide more monitoring information.
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 |
Rated |
Extreme |
Rated insulation |
|
JDZJ-3 |
3/√ 3/0.1√3/0.1/3 |
0.2 |
15 |
300 |
3.6/25/40 |
|
0.5 |
30 |
||||
|
JDZJ-6 |
6√ 3/0.1√3/0.1/3 |
0.2 |
20 |
400 |
7.2/32/60 |
|
0.5 |
50 |
||||
|
JDZJ-10 |
10√3/0.1√3/0.1/3 |
0.2 |
25 |
500 |
12/42/75 |
|
0.5 |
50 |
Structure and characteristics
This series of voltage transformers are semi-enclosed epoxy cast type. The core is made of high-quality silicon steel sheets stacked together, and there are cylindrical concentric primary and secondary coils in the cast body. There is a grounding bolt and four installation holes for installation on the bottom clamp of the product.


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