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JDZJ(18)-3, 6, 10 Voltage Transformers for AC Power Systems - High Quality China Suppliers and Factory

The JDZJ(18)-3, 6, and 10 type voltage transformers are essential components designed for AC power systems with a rated frequency of 50Hz or 60Hz and voltage ratings ranging from 3kV to 10kV. These transformers are specifically utilized for electric energy metering, precise voltage measurement, and effective relay protection. As a leading manufacturer in China, our factory adheres to stringent product execution standards, including GB20840.1-2010 and GB20840.3-201We are committed to supplying high-quality voltage transformers that meet the needs of modern electrical systems

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Outline and Installation Dimension Drawing

Model and its meaning

Summarize

Beyond their core functions, voltage transformers also facilitate the implementation of automation and remote monitoring systems. By combining voltage transformers with advanced monitoring technologies, operators can remotely collect data, enabling real-time analysis and decision-making. This capability not only simplifies operations but also reduces the costs associated with high-voltage measurement equipment. Furthermore, some voltage transformers offer multiple functions, including additional features such as frequency and phase measurement. This integration provides a comprehensive monitoring solution, offering valuable insights into power system performance.

Normal Service Condition

Installation site: Indoor

Ambient temperature: The maximum temperature is 40℃, the minimum temperature is -5℃, and the daily average temperature does not exceed 30℃.

Atmospheric conditions: Ensure that there is no serious pollution in the atmosphere to avoid affecting the insulation performance and working stability of the equipment.

When the above conditions are met, the voltage transformer can operate normally and safely.

Technical Parameters

Product Model	Rated Voltage Ratio	Accuracy Level	Rated Output (VA)	Extreme Output (VA)	Rated Insulation Level (KV)
JDZJ(18)-3	3/√3/0.1/√3/0.1/3	0.2/3P	15/50	200	3.6/25/40
JDZJ(18)-3	3/√3/0.1/√3/0.1/3	0.5/3P	30/50	200	3.6/25/40
JDZJ(18)-6	6/√3/0.1/√3/0.1/3	0.2/3P	15/50	200	7.2/32/60
JDZJ(18)-6	6/√3/0.1/√3/0.1/3	0.5/3P	30/50	200	7.2/32/60
JDZJ(18)-10	10/√3/0.1/√3/0.1/3	0.2/3P	15/50	200	12/42/75
JDZJ(18)-10	10/√3/0.1/√3/0.1/3	0.5/3P	30/50	200	12/42/75
JDZJ(18)-3	3/√3/0.1/√3/0.1/3	0.2/3P	20/50	200	3.6/25/40
JDZJ(18)-3	3/√3/0.1/√3/0.1/3	0.2/0.5/3P	15/15/50	200	3.6/25/40
JDZJ(18)-6	6/√3/0.1/√3/0.1/3	0.2/3P	20/50	200	7.2/32/60
JDZJ(18)-6	6/√3/0.1/√3/0.1/3	0.2/0.5/3P	15/15/50	200	7.2/32/60
JDZJ(18)-10	10/√3/0.1/√3/0.1/3	0.2/3P	20/50	200	12/42/75
JDZJ(18)-10	10/√3/0.1/√3/0.1/3	0.2/0.5/3P	15/15/50	200	12/42/75

Structure and Characteristics

This series of voltage transformers adopt a pillar structure and are fully enclosed with epoxy resin by epoxy casting. They are resistant to pollution and moisture and are also suitable for use in tropical regions. The transformers do not require special maintenance; only regular cleaning of surface dirt is needed. Terminal boxes are installed at the secondary output terminals of the transformers. There is one hole on the front and one on the side of the terminal box to cooperate with the output terminals for leadout wiring, which is safe and reliable. There are grounding bolts and six installation holes for installation on the product base plate.

Frequently Asked Questions (FAQ)

QWhat is the JDZJ(18) series voltage transformer used for?

AThe JDZJ(18) series voltage transformer is designed for indoor use in power systems to step down high voltages for measurement, metering, and protection purposes. It also supports automation and remote monitoring systems by enabling real-time data collection and analysis.

QWhat are the available voltage ratings for the JDZJ(18) series?

AThe JDZJ(18) series is available in three rated voltage levels: 3 kV (JDZJ(18)-3), 6 kV (JDZJ(18)-6), and 10 kV (JDZJ(18)-10), each with corresponding insulation levels of 3.6/25/40 kV, 7.2/32/60 kV, and 12/42/75 kV respectively.

QWhat accuracy levels does the JDZJ(18) voltage transformer support?

AThe transformer supports accuracy levels of 0.2/3P and 0.5/3P for standard configurations, and 0.2/0.5/3P for multi-winding configurations. These levels make it suitable for both precision metering and general protection applications.

QWhat are the operating temperature requirements for this transformer?

AThe transformer is rated for ambient temperatures between -5℃ and 40℃, with a daily average not exceeding 30℃. It is designed for indoor installation in environments free from serious atmospheric pollution to ensure stable insulation performance.

QDoes the JDZJ(18) voltage transformer require regular maintenance?

ANo special maintenance is required. The epoxy resin encapsulation makes it resistant to pollution and moisture. Routine upkeep is limited to periodic cleaning of surface dirt to maintain optimal performance and longevity.

QIs the JDZJ(18) series suitable for use in tropical or high-humidity environments?

AYes. Thanks to its fully enclosed epoxy resin casting construction, the JDZJ(18) series offers strong resistance to moisture and pollution, making it suitable for deployment in tropical regions and environments with elevated humidity levels.