JLSZY-35W Outdoor 35kV Combined Instrument Transformer

🔧 Accurate Outdoor Metering in One Compact Solution

The JLSZY-35W is an outdoor combined current and voltage transformer built to support 35kV distribution networks in power plants, substations, and renewable energy facilities. It integrates both CT (current transformer) and VT (voltage transformer) functions into a single compact unit—ideal for metering and protection in space-constrained, high-voltage outdoor environments.

Its oil-insulated, fully enclosed design ensures long-term reliability and withstands harsh weather conditions, from desert heat to coastal humidity.

📐 Technical Specifications

Parameter	Specification
Model	JLSZY-35W
Rated Voltage	35kV
Rated Primary Current	10~600A (customizable)
Rated Secondary Current	5A / 1A
Rated Voltage Transformation	35kV / √3 / 100V / √3
Accuracy Class (Metering)	0.2s / 0.5 / 1.0
Accuracy Class (Protection)	5P20 / 10P10
Frequency	50Hz / 60Hz
Insulation Medium	Oil-filled
Partial Discharge	≤10pC under 1.2x Un
Impulse Withstand Voltage	200kV
Power Frequency Withstand	80kV / 1min
Creepage Distance	≥900mm
Standard Compliance	IEC 61869, GB 1207/1208

✅ Key Features

• Integrated CT and PT in One Unit
  Saves space and simplifies outdoor metering setups.

• Oil-Insulated, Outdoor-Rated Design
  Ensures stable operation under wide ambient temperature ranges (–40°C to +55°C).

• High Accuracy for Energy Billing
  Certified 0.2s metering class supports precision revenue-grade metering.

• High Insulation Performance
  Reliable dielectric strength even in high-humidity or pollution-heavy environments.

• Corrosion-Resistant Structure
  Outer shell made with anti-corrosive coatings for use in coastal, desert, or industrial zones.

📌 Application Scenarios

• 35kV outdoor substations

• Wind and solar power integration

• Mining zone power systems

• Industrial energy metering

• Compact switchgear yards with limited space

🌍 Trusted by Global Utilities

🔹 Federico P., Project Engineer – Terna S.p.A., Italy
"This CT+VT unit saves mounting space and streamlines cabling. No failures in 4 years of desert use."

🔹 Oliver H., Metering Supervisor – Eskom, South Africa
"We replaced separate units with JLSZY-35W. Metering accuracy is solid and supports AMI systems perfectly."

🔹 Amy L., EPC Manager – NextEra Energy, USA
"Installation was fast. The oil tank design withstood several lightning strikes without issue."

🔹 Rahul N., Grid Auditor – NTPC, India
"Very compact, easy to install in retrofitted yards. Voltage output is consistent."

🔹 Liam F., Operations Lead – SSE, UK
"Best choice for remote substations where reliability matters more than price."

❓ Frequently Asked Questions

• Can JLSZY-35W support smart metering systems?
Yes. It delivers precise analog signals compatible with AMI and SCADA integration.

• Is this suitable for coastal or humid environments?
Absolutely. Its oil-sealed, corrosion-resistant build ensures long-term operation.

• What's the installation configuration?
Mounted on a concrete base or steel support frames with minimal wiring.

• Can you customize the primary current ratio?
Yes. We offer 10A to 600A primary current on request.

• Are full type-test reports available?
Yes. Each unit is tested per GB/IEC standards with documented results.

📞 Get Expert Support or Request a Quote

Thor – Electrical Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: thor@weishoelec.com

Contact us for CAD drawings, wiring guides, or custom configurations.