JDZ(X)10-10 Indoor 10kV Voltage Transformer PT | ZHNYU

The ZHNYU JDZ(X)10-10 series represents a versatile lineup of medium-voltage single-phase voltage transformers built for 10kV power distribution infrastructure. Designed primarily for indoor switchgear panels, ring main units, and consumer substations, this indoor voltage transformer reduces high system voltages down to standardized secondary levels suitable for instrumentation, meters, and protective relays.

ZHNYU constructs every unit using advanced epoxy-resin vacuum casting technology. By completely encapsulating the primary and secondary windings in solid insulation, ZHNYU eliminates traditional oil or gas insulation systems entirely. This solid-dielectric construction prevents leakage risks, lowers fire hazards, and ensures stable electrical performance over decades of continuous operation. Whether deployed in standard three-wire commercial metering loops or complex four-wire relay schemes, the ZHNYU potential transformer adapts smoothly to diverse electrical environments. Every single 10kV potential transformer undergoes rigorous factory testing to ensure long-term stability and high electrical clearance under demanding indoor operational cycles.

Key Product Features

• Solid Epoxy-Resin Vacuum Insulation: ZHNYU encapsulates all active winding components under a high-vacuum chamber, creating a void-free dielectric barrier that resists moisture, dust, and environmental degradation, perfectly defining an advanced epoxy resin PT.

• Dual Model Versatility (JDZ & JDZX): The standard JDZ model focuses on high-accuracy voltage measurement, while the JDZX variant integrates an open-delta auxiliary winding (100/3V) specifically tailored for earth-fault detection.

• Flexible Modular Topologies: Engineers can configure two ZHNYU units in a V/V arrangement for three-phase three-wire systems or deploy three units in star or V/V/V setups for comprehensive four-wire monitoring using this reliable 10kV potential transformer.

• Customizable Secondary Outputs: Beyond standard secondary ratings, ZHNYU accommodates non-standard voltages, dual-ratio windings, and elevated burden outputs to match unique protection relay specifications.

• Robust Compliance and Safety: Manufactured under strict quality controls meeting ISO9001 and CE frameworks, aligning with GB/T20840 standard specifications for medium-voltage instrument transformers.

Technical Advantages

Deploying a ZHNYU 10kV voltage transformer inside medium-voltage installations brings distinct engineering and operational benefits. Traditional liquid-filled transformers require periodic oil testing, sealing checks, and environmental containment measures. In contrast, the solid epoxy-resin design of the ZHNYU series requires zero routine maintenance, significantly lowering operational upkeep expenses for facility managers utilizing an indoor voltage transformer solution.

Furthermore, electrical engineers often face challenges when retrofitting existing switchgear or designing custom protection panels. ZHNYU addresses this by offering adaptable core designs that support varied rated outputs ranging from 10 VA up to 50 VA, with limit outputs stretching between 200 VA and 800 VA. This flexibility ensures that connected protection relays and tariff meters receive stable voltage signals without signal saturation or phase angle error drift during heavy system disturbances, showcasing the engineering prowess built into every JDZ10-10 transformer.

Technical Specifications Table

 Applications

• Medium-Voltage Switchgear Panels: Mounted inside indoor switchgear cubicles to feed busbar voltage data directly to digital panel meters, transducers, and multi-function protection relays using a high-performance medium voltage potential transformer.

• Ring Main Units (RMUs): Utilized in compact secondary distribution networks where the JDZX model's residual voltage winding detects zero-sequence currents to signal earth faults promptly via a dedicated 10kV voltage transformer layout.

• Industrial and Commercial Substations: Positioned at the primary utility interface for billing-grade revenue metering, where Class 0.2 accuracy ensures precise energy accounting through an advanced epoxy resin PT.

• Factory Power Distribution Rooms: Supplies reliable reference voltage signals to directional overcurrent and undervoltage protection schemes, safeguarding heavy industrial machinery from grid anomalies with an installed JDZ10-10 transformer.

Commercial Value & Engineering Support

Investing in quality instrument transformers directly impacts the reliability of medium-voltage power networks. Substation downtime and inaccurate metering lead to financial losses and operational hazards. ZHNYU bridges the gap between cost-effective manufacturing and strict engineering compliance.

Before production begins, the technical team at ZHNYU reviews client system parameters, short-circuit levels, and burden calculations to verify the correct indoor voltage transformer model and wiring plan. Standard configurations ship efficiently within 10 to 15 working days, while customized winding requests receive dedicated engineering drawings for seamless panel integration. Backed by a 12-month manufacturing warranty and responsive customer support, ZHNYU remains a dependable partner for electrical contractors, panel builders, and utility operators worldwide seeking a trusted 10kV voltage transformer solution.

Frequently Asked Questions (FAQ)

Q1: What is the main difference between the JDZ and JDZX voltage transformer models?

A: The standard JDZ model is designed for primary voltage measurement and standard revenue metering. The JDZX model includes an additional residual voltage auxiliary winding (100/3V connected in open-delta) specifically engineered for earth-fault and zero-sequence detection in grounded or ungrounded systems using a versatile 10kV potential transformer configuration.

Q2: Can ZHNYU customize secondary voltage outputs that are not listed in standard parameters?

A: Yes. While standard secondary voltages include 100V, 220V, and 380V, ZHNYU frequently accommodates non-standard secondary ratings, dual-ratio windings, and special burden requirements based on project specifications for any custom epoxy resin PT requirement.

Q3: How do I select the correct accuracy class for my application?

A: For revenue billing and utility-grade metering interfaces, Accuracy Class 0.2 or 0.5 is typically required to ensure precise energy accounting. For standard relay protection and monitoring circuits, Class 6P is commonly deployed to maintain performance under fault conditions when utilizing an indoor voltage transformer.