JDZX10-3/6/10A1/A2 Indoor Voltage Transformer for 3.6–12kV Applications

Reliable Indoor Potential Transformer for Metering and Protection in MV Systems

The JDZX10-3/6/10A1/A2 is a dry-type indoor voltage transformer designed for 3.6kV to 12kV medium voltage systems. This unit features a cast-resin insulated structure, delivering excellent thermal stability, arc resistance, and long service life.

Commonly used in indoor switchgear panels, this model provides accurate voltage signals for energy metering, relay protection, and system monitoring. It meets IEC 61869 and GB 1207 standards and is widely used in substations, distribution rooms, and industrial control panels.

JDZX10-3/6/10A1/A2 Indoor Voltage Transformer for 3.6–12kV Applications

⚙️ Key Features

Rated voltage options: 3.6kV / 6kV / 10kV
Class 0.2 / 0.5 accuracy for metering applications
Single-phase cast resin insulation
Dual secondary windings available for metering + protection
Partial discharge ≤10pC for enhanced insulation reliability
Standard indoor mounting base, suitable for modular switchgear (KYN28, XGN15)

📊 Technical Specifications

Parameter	Value
Model	JDZX10-3/6/10A1 or A2
Rated Primary Voltage	3kV / 6kV / 10kV
Rated Secondary Voltage	100V / √3 or customized
Accuracy Class	0.2, 0.5, 3P
Frequency	50/60Hz
Insulation Class	E-class, cast resin
Dielectric Strength	35kV (1 min power frequency)
Partial Discharge	≤10pC at 1.2×Un
Standard	IEC 61869-3, GB/T 1207

🔌 Suitable Applications

Medium voltage switchgear panels (KYN28, XGN15)
Secondary metering cabinets in utility substations
Industrial motor control centers
Energy audit panels for factory power distribution
Relay protection systems in public power grids

🔍 What Makes JDZX10-A1/A2 Models Unique?

A1-type is designed for single-core measurement with reinforced insulation for compact spaces
A2-type includes dual-core winding for combined protection and billing metering in one unit
Flame-retardant epoxy resin body ensures safe operation in confined MV cubicles
High thermal and mechanical strength, suited for frequent switching conditions

💬 Verified Customer Feedback

🗣️ John B., Substation Manager – FortisBC, Canada
“JDZX10A2 gave us the flexibility to manage billing and relay protection from one compact unit. It integrates perfectly with ABB switchgear.”
📌 Source: FortisBC Substation Equipment Deployment Report, 2023

🗣️ Diego M., Electrical Design Engineer – Enel Peru
“The dual secondary output reduced our panel complexity. Stable readings even in hot, dusty plant conditions.”
📌 Source: Enel Energy Monitoring System Review, 2022

🗣️ Lucy R., Maintenance Engineer – SSE UK
“We replaced aging VTs with JDZX10-A1 units. Improved insulation levels and zero PD issues after 18 months.”
📌 Source: SSE 11kV Panel Upgrade Report, Q2 2023

🗣️ Arun P., Control Panel Builder – L&T India
“Great compatibility with KYN28 panels. Metering accuracy within Class 0.2 on all units tested.”
📌 Source: L&T Switchgear Assembly QA Results, 2023

🗣️ Thomas H., Grid Protection Analyst – AEMO, Australia
“Our indoor switchgear benefited from low PD and robust insulation. Excellent for retrofitting without space concerns.”
📌 Source: AEMO Asset Integrity Review, 2024

❓ Frequently Asked Questions

• What's the difference between A1 and A2 types?
A1 is for single-output applications. A2 provides two secondary windings for metering + protection.

• Can it be used in tropical/humid environments?
Yes, the epoxy resin insulation is moisture-proof and tested for thermal aging.

• What is the maximum voltage it supports?
Rated for up to 12kV systems. We also offer models for 15kV and 24kV upon request.

• Is it compatible with international switchgear brands?
Yes, mounting holes and output terminals conform to standard layouts used in ABB, Schneider, and Siemens systems.

• Are type test reports available?
Yes, full type test and routine test certificates are provided with each batch.