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High-Quality JDZJ-3, 6, and 10 Type Voltage Transformers from Reliable China Suppliers | Factory Direct Price
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
Provides electrical isolation between high-voltage and low-voltage sides, preventing high voltage from damaging measurement equipment and control systems.
Strong Adaptability
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
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, reducing overall system costs.
Multifunctionality
Some voltage transformers can also integrate other functions, such as frequency measurement, phase measurement, etc.
Normal Service Condition
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Installation Site: Indoor.
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Ambient Temperature: Maximum air temperature 40℃; Minimum temperature is -5℃. The daily average temperature does not exceed 30℃.
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Atmospheric Conditions: There is no severe pollution in the atmosphere.
Technical Parameter
| Product Model | Rated Voltage Ratio (kV) | Accuracy Level | Rated Output (VA) | Extreme Output (VA) | Rated Insulation Level (kV) |
|---|---|---|---|---|---|
| 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.
Frequently Asked Questions (FAQ)
Q1 What is the primary application of the JDZJ series voltage transformers?
The JDZJ-3, JDZJ-6, and JDZJ-10 voltage transformers are indoor semi-enclosed epoxy cast type devices designed for voltage measurement, electrical power monitoring, and relay protection in power transmission systems.
Q2 What are the recommended ambient operating conditions for these VTs?
They should be installed indoors where the maximum ambient air temperature does not exceed 40℃, the minimum temperature is not lower than -5℃, and the daily average temperature is under 30℃, without severe atmospheric pollution.
Q3 What accuracy classes and rated outputs do these models support?
They support accuracy levels of 0.2 and 0.5. The rated outputs are 15/30 VA for JDZJ-3, 20/50 VA for JDZJ-6, and 25/50 VA for JDZJ-10, depending on the accuracy class selected.
Q4 What are the rated insulation levels of JDZJ-3, JDZJ-6, and JDZJ-10?
The rated insulation levels (kV) are 3.6/25/40 for JDZJ-3, 7.2/32/60 for JDZJ-6, and 12/42/75 for JDZJ-10.
Q5 How is the physical structure of the JDZJ series designed?
These transformers feature a semi-enclosed epoxy cast structure with high-quality silicon steel sheet cores and cylindrical concentric primary and secondary coils. The bottom clamp includes four installation holes and a grounding bolt for secure setup.