Products Categories

Dual Output Switching Power Supply

Single Output Waterproof Power Supply

DR Single Output Industrial DIN Rail Power Supply

HSP Series Single Output Switching Power Supply with PFC Function

S Single Output Switching Power Supply

HSCP Series UPS Battery Charger Type Switching Power Supply

HS HRs single output switching Power supply

HD11G Series (Special for Photovoltaic Applications)

HHT10 Series Bar-type Vertical Fuse Switch Disconnector

LMK1(BH)-0.66 current transformer

0102030405

JDZ9-20 Type Voltage Transformer - China Suppliers & Factory for 20kV AC Power Systems and Metering Solutions

The JDZ9-20 type voltage transformer is an essential component in AC power systems, designed for rated frequencies of 50Hz or 60Hz, with a voltage rating of 20kV. This high-quality transformer is ideal for electric energy metering, voltage measurement, and relay protection, making it a reliable choice for various electrical applications. Manufactured in China, this product meets the stringent execution standards of GB20840.1-2010 and GB20840.3-201As a leading supplier and factory, we ensure top-notch performance and durability in our voltage transformers, serving the needs of professionals in the electrical industry

Preview Data Contact us

Product Detail

Model and Its Meaning

JDZ9-20 Indoor Voltage Transformer Model Meaning

Overview

In the field of electrical engineering, the importance of reliable and efficient power measurement equipment cannot be overstated. Among these devices, indoor voltage transformers are key components in medium and high voltage power systems. Our 15-35kV indoor voltage transformers are high-performance, highly reliable power measurement devices designed to meet the demands of modern power infrastructure.

The primary function of indoor voltage transformers is to provide precise voltage measurements, which are crucial for power system monitoring and protection. Our 15-35kV indoor voltage transformers excel in this regard, offering high-precision measurement capabilities. These transformers feature excellent linearity and low phase error, ensuring accurate and reliable voltage readings. This precision is crucial for effective power system monitoring and protection, as even small discrepancies in voltage measurements can lead to serious operational issues.

Normal Service Conditions

📍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 Parameters

Product Model	Rated Voltage Ratio (kV)	Accuracy Level or a Combination of Accuracy Levels	Rated Output (VA)	Extreme Output (VA)	Rated Insulation Level (kV)
JDZ9-20	20/0.1 20/0.1/0.1	0.2	15	500	24/65/125
	20/0.1 20/0.1/0.1	0.5	30	500
	20/√3/0.1/√3/0.1/3 20/√3/0.1/√3/0.1/√3/0.1/3	0.2	15	2*300
		0.5	50
		3P	100

Structure and Characteristics

Pillar-type design with a fully enclosed epoxy resin casting process.
Excellent resistance to contamination and moisture — suitable for use in tropical regions.
Requires no special maintenance; only regular surface cleaning is needed.
Secondary terminals equipped with a terminal box with holes on the front and side for safe and reliable wiring.
Baseplate equipped with a grounding bolt and six mounting holes for easy installation.

❓ Frequently Asked Questions

Q What voltage range does the JDZ9-20 indoor voltage transformer support?

The JDZ9-20 indoor voltage transformer is designed for use in 15-35kV power systems, with a rated voltage ratio of 20/0.1 kV or configurations including 20/√3/0.1/√3/0.1/3, making it suitable for a wide range of medium voltage applications.

Q What accuracy levels are available for the JDZ9-20 voltage transformer?

The JDZ9-20 is available in accuracy levels of 0.2, 0.5, and 3P, allowing it to serve both metering and protection functions in power systems. Different accuracy levels correspond to different rated output (VA) values.

Q Is the JDZ9-20 suitable for use in humid or tropical environments?

Yes. The JDZ9-20 uses a fully enclosed epoxy resin casting process that provides excellent resistance to moisture and contamination, making it well-suited for deployment in tropical regions and environments with high humidity.

Q What are the installation requirements for the JDZ9-20 voltage transformer?

The JDZ9-20 is designed for indoor installation only. The ambient temperature should remain between -5℃ and 40℃, with a daily average not exceeding 30℃. The installation site should be free from severe atmospheric pollution.

Q Does the JDZ9-20 require regular maintenance?

The JDZ9-20 requires minimal maintenance due to its sealed epoxy resin construction. Only routine surface cleaning is necessary to ensure long-term reliable operation. No special maintenance procedures are required under normal service conditions.

Q What is the rated insulation level of the JDZ9-20 voltage transformer?

The rated insulation level of the JDZ9-20 is 24/65/125 kV, which ensures safe and reliable operation in medium voltage power systems and provides strong dielectric performance against voltage surges and transient overvoltages.