JDZ10-3,6,10(Q) Series 10kV Single-Phase Cast-Resin Voltage Transformer

The JDZ10-3,6,10(Q) Series 10kV Single-Phase Cast-Resin Voltage Transformer is a single-phase instrument transformer series for voltage measurement in 3 kV, 6 kV, and 10 kV systems. The supplied product data lists voltage ratios of 3000/100, 6000/100, and 10000/100. It also identifies cast insulation and two configurations, JDZ10-3, 6, 10 and JDZ10-3, 6, 10Q. The Q designation is described as full operational mode. This page organizes available product information for technical review; it does not replace project-specific circuit design, protection review, or commissioning procedures.

Selecting a voltage transformer is not only a question of choosing a nominal voltage. The relevant combination includes primary voltage, ratio, accuracy class, secondary burden, insulation level, terminal arrangement, and mounting interface. For the JDZ10-3,6,10(Q) Series 10kV Single-Phase Cast-Resin Voltage Transformer, these parameters should be checked together against the real measurement circuit. A catalog value can support selection, but it should not be treated as proof that every site condition or secondary arrangement is acceptable.

Electrical data supplied for the series

Read the table as a coordinated reference. The listed 3 kV pairing is 3000/100 with 3.6/25/40 kV insulation. The 6 kV pairing is 6000/100 with 7.2/32/60 kV insulation, and the 10 kV pairing is 10000/100 with 12/42/75 kV insulation. The available material lists secondary outputs of 15 VA at class 0.2, 30 VA at class 0.5, 60 VA at class 1, and 150 VA at class 3, with a maximum output of 200 VA. It does not state that all application combinations are interchangeable.

A practical selection sequence

Start with the primary circuit

Match the system voltage to the documented ratio before considering secondary details. The source pairs 3 kV with 3000/100, 6 kV with 6000/100, and 10 kV with 10000/100. That relationship establishes the initial measurement basis. The JDZ10-3,6,10(Q) Series 10kV Single-Phase Cast-Resin Voltage Transformer should therefore be specified from the actual primary circuit, rather than selected from the series name alone.

Then verify class and burden

Accuracy class and connected burden must be reviewed together. Where class 0.2 or 0.5 is required, compare the relevant listed 15 VA or 30 VA value with the designed secondary circuit. For class 1 or 3 duty, compare the requirement with the stated 60 VA or 150 VA value. A higher listed output is not automatically more appropriate if the class or circuit duty does not match. Confirm the instrument load, secondary wiring, and measurement design with a qualified engineer when they impose additional constraints.

Confirm configuration and mechanical interface

The standard and Q versions have different terminal arrangements and dimensions. The standard drawing lists 106 mm primary-terminal spacing and a 252 mm overall side-view height. The Q drawing lists 192 mm primary-terminal spacing, an M10 primary bolt, an M8 earth bolt, and other stated dimensions. Compare the applicable drawing with mounting provisions, terminal positions, cable routing, earth connection, and service access before the final specification is released.

A rating alone does not establish installation fit. Cable entry zones, bending space, enclosure clearance, and access for inspection can affect an otherwise valid selection. This is especially important when electrical design, panel layout, and procurement are handled by separate teams. The JDZ10-3,6,10(Q) Series 10kV Single-Phase Cast-Resin Voltage Transformer should be considered with its associated secondary circuit and mounting environment, not as an isolated catalog item.

Documented product features

• Voltage choices: listed for 3 kV, 6 kV, and 10 kV systems with corresponding ratios.
• Measurement classes: the source identifies classes 0.2, 0.5, 1, and 3 with stated outputs.
• Cast-insulation design: the series is described as a cast-insulation voltage transformer.
• Configuration-specific drawings: standard and Q versions have separate mechanical references.
• Connection context: supplied material refers to single-transformer and two-transformer measuring diagrams.

These features describe a measurement component, not a complete protection system or switchgear assembly. The material does not claim site performance, a particular certificate, or compatibility with equipment beyond the stated information. This boundary is important for specification work: use verified data for the selected unit and request additional documentation where a project requires it.

Applications and connection context

The supplied material identifies voltage measurement in 3 kV, 6 kV, and 10 kV single-phase circuits. One diagram describes a transformer with its primary connected between lines A and B and a voltmeter across secondary terminals a and b. Another describes two transformers on a three-phase line A, B, and C, each with a voltmeter across its own secondary. These diagrams provide useful context, but they do not replace a project-specific protection, metering, or commissioning review.

For a single-phase point, begin with the documented voltage and ratio. For a multi-device arrangement, also verify the intended secondary loading, terminal locations, wiring path, and measuring scheme. If an installation includes switchgear components, check the interfaces against the relevant equipment drawings rather than assuming compatibility from the transformer series. The allocated phrase “variable frequency drive vs soft starter” is used as a supporting SEO keyword only; it is not stated as an application, feature, or specification of this product.

When standards or local approvals are relevant, confirm the applicable IEC transformer standards, IEEE requirements, local grid codes, edition, test clause, and market-specific requirement with the supplier and responsible authority. The supplied source does not claim a particular certificate or test report. Careful verification separates a valid documentation request from an unsupported compliance assumption.

Dimensions and inquiry information

The useful difference offered by this series is a documented set of voltage-ratio, accuracy-class, output, insulation, and configuration references that can support a structured review. Start with voltage and ratio, confirm class and burden, select standard or Q configuration, and then check the applicable drawing against installation conditions. If site conditions, connected instruments, or authority requirements introduce further constraints, request a project-specific engineering review before installation.

For an effective inquiry, provide system voltage, requested ratio, accuracy class, secondary burden, configuration, connection arrangement, mounting constraints, and required documentation. The source lists MOQ 1, T/T payment, and delivery within 20 days after receipt of payment; reconfirm commercial terms for the requested configuration. Zhejiang Jingyu Technology Co., Ltd. lists voltage and current instrument transformers in its product range. From a distribution-system design perspective, before energization, reconcile the selected JDZ10-3,6,10(Q) Series 10kV Single-Phase Cast-Resin Voltage Transformer with the drawing, secondary wiring, local requirements, and actual site conditions. This final cross-check is a practical handoff point for design, procurement, and commissioning teams.