JLSZV-6/10 Combined Instrument Transformer – Accurate Metering for 6kV to 10kV Grids

⚙️ Precise Voltage and Current Measurement for Medium Voltage Systems

The JLSZV-6/10 Combined Instrument Transformer, also known as a metering box, integrates both current transformer (CT) and voltage transformer (VT) components into a single enclosure. Designed specifically for 6kV to 10kV power distribution networks, it offers compact design, reliable accuracy, and safety in one integrated package.

This model is widely used in outdoor substations, industrial medium-voltage switchgear panels, and pole-mounted metering points where space-saving and high precision are essential.

📐 Technical Specifications

Parameter	Value
Model	JLSZV-6/10
Rated Voltage	6kV / 10kV
Rated Primary Current	5A / 10A / 50A / 100A (customizable)
Rated Secondary Current	5A / 1A
Rated Frequency	50Hz / 60Hz
Accuracy Class (CT)	0.2S / 0.5S / 1.0
Accuracy Class (VT)	0.2 / 0.5
Insulation Level	12/42/75kV (10kV), 7.2/32/60kV (6kV)
Creepage Distance	≥ 300mm (pollution class II)
Standard Compliance	IEC 61869, GB/T 20840

🔍 Key Features

• Compact Metering Solution
  Combines voltage and current transformers in one box, reducing installation space and wiring complexity.

• High Measurement Accuracy
  Conforms to Class 0.2S or Class 0.5 accuracy for both CT and VT – suitable for billing and protection.

• Reliable Insulation Performance
  Equipped with high-quality epoxy resin or oil-immersed insulation, ensuring excellent dielectric strength and weather resistance.

• Ease of Installation
  Factory preassembled, with clearly marked terminals for straightforward wiring and testing.

• Customizable Options
  Available with single-phase or three-phase metering, support for various CT ratios and primary voltages.

🏗 Application Scenarios

• Rural and Urban Power Distribution Systems

• Outdoor Pole-Mounted or Pad-Mounted Metering Points

• Compact Substations

• Ring Main Units (RMU)

• Industrial Facilities with 6kV–10kV Internal Distribution

🌍 What Global Customers Are Saying

🔹 Michael T., Distribution Engineer – Eskom, South Africa
"The JLSZV-10 unit helped streamline our metering infrastructure in remote substations. No issues after 3 years."

🔹 Emily S., Utility Design Manager – Hydro One, Canada
"Accurate and compact. We use it in rural areas where full-scale cabinets are not practical."

🔹 Liam W., Site Engineer – TNB Malaysia
"The build quality is solid. Terminal markings are clear, and test results were stable across multiple units."

🔹 Richard F., Senior Technician – National Grid UK
"Excellent value. Meter readings remain consistent even in high humidity zones."

🔹 Ana G., Project Coordinator – CFE Mexico
"We appreciated the fast delivery and flexibility in CT ratio customization. Highly recommend for 10kV systems."

❓ Frequently Asked Questions

• Is it suitable for both outdoor and indoor installations?
Yes, with proper enclosure protection, it supports both environments. IP54/IP65 options available.

• Can it be used with energy meters from ABB or Siemens?
Yes. The standard output (1A/5A and 100V/110V) is fully compatible.

• What’s the lead time for bulk orders?
Typically 10–15 working days for standard models; custom configurations may vary.

• Does it support remote communication?
Not by default, but it can be paired with smart meters or external communication modules.

• Are test certificates included?
Yes. Each unit is factory tested and shipped with calibration and type test reports.

📞 Get Expert Support & Quotation

Thor – Electrical Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]

Looking for a reliable combined CT/VT transformer for your 6–10kV grid? Let’s talk about your project and deliver a solution that fits.