JSZF-3, 6, 10kv Semi-Enclosed Epoxy Resin Voltage Transformer Overview

The JSZF-3, 6, 10kV semi-enclosed epoxy resin voltage transformer is a highly reliable solution for medium-voltage power systems, designed for voltage measurement, energy metering, and relay protection at a rated frequency of 50Hz. Built with durable epoxy resin insulation, it provides exceptional electrical performance, stability, and mechanical strength, making it suitable for systems with rated voltages of 3kV, 6kV, and 10kV. Its compact, semi-enclosed design ensures ease of installation while enhancing safety and operational efficiency.

Engineered to meet international standards, the JSZF voltage transformer is widely applied in substations, industrial facilities, and other critical power infrastructure, delivering accurate measurements and reliable protection for modern electrical networks.

JSZF-3, 6,10 Voltage Transformers Type designation

The JSZF-3, 6, 10 voltage transformer type designation reflects its design, voltage level, and insulation features.

• J: Instrument Transformer
• S: Voltage Transformer
• Z: Resin Insulation
• F: Semi-Enclosed Type
• 3, 6, 10: Voltage Levels (3kV, 6kV, 10kV)

For example: JSZF-10 = Instrument Voltage Transformer with Epoxy Resin Insulation, Semi-Enclosed Design, Rated for 10kV.

Service Conditions for JSZF-10 Voltage Transformer

The JSZF-3, 6, 10 voltage transformer is designed for reliable operation in medium-voltage power systems, ensuring precise voltage measurement and protection. Key service conditions include:

1. Rated Frequency: 50Hz
2. Ambient Temperature: -5°C to +40°C
3. Altitude: ≤1000m (custom options available for higher altitudes)
4. Relative Humidity: ≤95% (non-condensing)
5. Pollution Level: Suitable for light to moderate environments, ideal for indoor installations.
6. Mounting Position: Vertical installation recommended for optimal performance.

Built with epoxy resin insulation, the JSZF-10kv voltage transformer guarantees durability, stability, and long-term performance in medium-voltage systems.

Construction Details of JSZF-3, 6 Voltage Transformer

The JSZF-3 and JSZF-6 voltage transformers combine a three-phase, three-pole unit with a single-phase, double-pole unit. In the three-phase configuration, the N-terminal is not grounded, while the single-phase unit connects in series with it. To ensure safe operation, the O-terminal of the single-phase unit must be grounded during faults. This design works seamlessly with grounding protection systems, preventing damage and allowing the transformer to operate normally. The structure is simple yet reliable, offering stable performance for voltage measurement and protection in medium-voltage power systems.

Technical Parameters of JSZF-10 Voltage Transformer

The JSZF-3, 6, 10 voltage transformers are designed for medium-voltage systems, meeting the essential requirements for safe and accurate operation.

• Surface Creepage Distance: Compliant with Pollution Class II standards.
• Load Power Factor: COS φ = 0.8 (lagging).
• Product Standard: Manufactured in accordance with GB20840.3-2013 and GB20840.1-2010.
• Technical Data: Refer to the table below for rated voltage ratios, output values, and insulation levels.

Type	Rated Voltage Ratio (V)	Rated Output (VA)					Limit Output (VA)	Rated Insulation Level (kV)
		0.2	0.5	1	3	6P
JSZF-3	3000/3 /100/3 /100/3	60	150	300	450	50	1000	3.6/2.5/40
JSZF-6	6000/3 /100/3 /100/3							7.2/32/60
JSZW-10	10000/3 /100/3 /100/3	75						12/42/75

• ustom Specifications: We offer tailored solutions for JSZF-3, JSZF-6, and JSZF-10 voltage transformers, including high-accuracy designs to meet specific application needs.
• Single Ratio Operation: For optimal performance, each JSZF voltage transformer operates using one specified voltage ratio at a time; simultaneous multi-ratio use is not supported.

These transformers are ideal for medium-voltage systems, ensuring precise voltage measurement, stable relay protection, and compliance with international standards.

Wiring for JSZF-10 Voltage Transformer

Outline and Dimensions of Installation

JSZF-3, JSZF-6 & JSZF-10 Voltage Transformers Customization

This page outlines the technical specifications, features, and service conditions of the JSZF-3, JSZF-6, and JSZF-10 voltage transformers, designed for accurate voltage measurement, relay protection, and energy monitoring in medium-voltage systems. These transformers are suitable for rated frequencies of 50Hz and voltage levels of 3kV, 6kV, and 10kV.

For non-standard requirements, specialized models, or customized solutions, our team can develop products tailored to your operational needs. To discuss specific technical details, model selection, or unique application requirements, please contact us directly for professional assistance and support.

(FAQs) about the JSZF-3, 6, and JSZF-10 voltage transformers:

1. What are the primary applications of JSZF-3, JSZF-6, and JSZF-10 voltage transformers?
   These voltage transformers are primarily used for voltage measurement, relay protection, and energy metering in medium-voltage systems with rated frequencies of 50Hz or 60Hz.
2. What standards do the JSZF series voltage transformers comply with?
   The JSZF series voltage transformers comply with the GB/T20840.1, 3 and IEC61869-1, 3 standards, ensuring high-quality performance and reliability.
3. What are the typical service conditions for JSZF voltage transformers?
   These transformers are designed for indoor use with an ambient temperature range of -5°C to +40°C and are suitable for installation sites up to an altitude of 1,000 meters.

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