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China JSZV1-3, 6, 10R Voltage Transformers - Reliable Power System Solutions from Trusted Suppliers and Factory

The JSZV1-3, 6, and 10R voltage transformers are highly reliable solutions designed for AC power systems operating at a frequency of 50Hz or 60Hz and rated voltages from 3 to 10 kV. As a leading product from a reputable factory in China, these transformers are widely utilized in the power industry for essential applications such as energy metering, voltage monitoring, and relay protection. Their robust design ensures optimal performance in high-voltage environments, catering to diverse power applications while delivering precise voltage measurements and monitoring. This capability significantly enhances the efficiency and safety of power systems. Our products comply with rigorous industry standards, specifically GB20840.1-2010 and GB20840.2-2013, making us a trusted supplier for high-quality voltage transformers in the global market

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Product Detail

Model and its meaning

Summarize

Voltage transformers feature a high level of safety protection, designed to effectively reduce potential risks, especially considering the frequent activity of people indoors, where their safety design is more comprehensive. To ensure safety during use, these transformers often employ a closed or semi-closed structure. This design significantly reduces the number of exposed live parts, thereby effectively reducing the risk of accidental contact and ensuring the safety of operators.

The insulation design of the voltage transformer is carefully considered to withstand the humidity and dust that may occur indoors. This adaptable design not only improves the reliability of the equipment but also avoids safety accidents caused by insulation breakdown. By using high-quality insulation materials and advanced insulation technology, the voltage transformer can maintain stable performance under various environmental conditions, ensuring its safe operation in the power system.

In practical applications, this type of voltage transformer with a high level of safety protection can effectively protect equipment and personnel, reduce the probability of accidents, and improve the safety and stability of the entire power system. Whether in industrial, commercial, or residential environments, the safety design of voltage transformers provides users with greater assurance, enabling them to play a crucial role in power monitoring and control.

Normal Service Condition

Installation place: Indoor.
Ambient temperature: Maximum temperature 40℃; Minimum temperature -5℃; The average daily temperature does not exceed 30℃.
Atmospheric conditions: No serious pollution in the atmosphere.

Technical Parameter

Product Model	Rated Voltage Ratio	Accuracy Level or Combination of Accuracy Level	Rated Output	Limiting Output	Rated Insulation Level
JSZV1-3R	3/0.1	0.2	30	500	3.6/25/40
		0.5	50
JSZV1-6R	6/0.1	0.2	30	500	7.2/32//60
		0.5	50
JSZV1-10R	10/0.1	0.2	30	500	12/42/75
		0.5	50

Structure and Characteristics

This series of voltage transformers is composed of two single-phase voltage transformers using epoxy resin casting as a whole to form a 'V' type wiring. The primary winding has a fuse for short-circuit protection. The fuse is installed inside the primary terminal. When replaced, in the case of power failure, it is very convenient and fast to remove the primary external wiring. There are grounding bolts and four mounting holes for installation on the product bottom plate.

Frequently Asked Questions

Q What does the "V" type wiring configuration mean in the JSZV1 series voltage transformers?

The "V" type wiring configuration means that two single-phase voltage transformers are combined using epoxy resin casting into a single unit, connected in a "V" arrangement. This configuration allows the transformer to measure three-phase voltages efficiently without requiring a third transformer, making it compact and cost-effective for indoor power monitoring applications.

Q What is the purpose of the fuse installed in the primary terminal of the JSZV1 transformer?

The fuse installed inside the primary terminal provides short-circuit protection for the primary winding. In the event of a fault, the fuse interrupts the circuit to prevent damage to the transformer and connected equipment. It is designed for easy replacement — simply remove the primary external wiring under power-off conditions to access and replace the fuse quickly and safely.

Q What accuracy levels are available for the JSZV1-3R, JSZV1-6R, and JSZV1-10R models?

All three models — JSZV1-3R, JSZV1-6R, and JSZV1-10R — are available in two accuracy levels: 0.2 (with a rated output of 30 VA) and 0.5 (with a rated output of 50 VA). The 0.2 accuracy level is suitable for precision metering applications, while the 0.5 level is used for general measurement and protection purposes.

Q What are the allowable ambient temperature conditions for operating the JSZV1 series transformers?

The JSZV1 series voltage transformers are designed to operate within an ambient temperature range of -5℃ to +40℃, with the average daily temperature not exceeding 30℃. These conditions ensure stable and reliable performance of the insulation materials and overall transformer components during normal indoor service.

Q Why is epoxy resin casting used in the construction of the JSZV1 voltage transformers?

Epoxy resin casting is used because it provides excellent insulation properties and effectively seals the transformer windings against moisture, dust, and environmental contaminants typical of indoor environments. This casting method creates a robust, compact structure that improves reliability, reduces the number of exposed live parts, and minimizes the risk of insulation breakdown — contributing to the transformer's high safety protection rating.

Q What is the limiting output for all JSZV1 series models, and why is it important?

The limiting output for all JSZV1 series models (JSZV1-3R, JSZV1-6R, and JSZV1-10R) is 500 VA. The limiting output defines the maximum burden the transformer can supply without causing excessive heating or accuracy degradation beyond acceptable limits. This specification is critical for system designers to ensure that the connected measuring instruments and protection devices do not overload the transformer during operation.