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Home > Electrical & Electronics > Power Supply & Distribution > Switchgear > 10kV Open Type LMZK-10 Current Transformer for High Voltage Power Grids

10kV Open Type LMZK-10 Current Transformer for High Voltage Power Grids

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Product Spotlights

The 10kV Open Type LMZK-10 Current Transformer enables easy, non-disruptive installation on live busbars for high-voltage grids. Featuring high accuracy (classes 0.2 to 10P), robust epoxy resin insulation for harsh environments, and compliance with IEC standards, it ensures reliable metering and protection. Customizable ratings and a maintenance-free design offer a cost-effective, long-term solution for utilities and industries.

US$ 30 ≥3 Units

Key Specifications

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Rated Voltage:

10kV

Type:

Open Type / Window Type

Model:

LMZK-10

Contact Supplier Request Quote Chat Now

Jinhua Dika Electrical Equipment Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Rated Voltage 10kV

Type Open Type / Window Type

Model LMZK-10

Application High Voltage Power Grids & Substations

Insulation Type Resin Cast / Epoxy Insulation

Accuracy Class 0.2, 0.2S, 0.5, 0.5S, 1, 3, 5P, 10P

Rated Primary Current Customizable (e.g., 100A-5000A)

Rated Secondary Current 1A or 5A

Standard Compliance IEC 61869, GB 1208

Installation Method Busbar or Cable Pass-through

As a leading manufacturer, Jinhua Dika Electrical Equipment Co., Ltd. specializes in providing reliable and precise electrical measurement solutions for global power infrastructure. Our 10kV Open Type LMZK-10 Current Transformer is engineered to meet the rigorous demands of modern high-voltage power grids, offering exceptional accuracy, robust construction, and long-term operational stability. With over a decade of experience and a commitment to quality certified by multiple international standards, we deliver products that ensure safe and efficient energy management for utilities and industrial clients worldwide.

This open-type current transformer is designed for installation directly onto existing busbars or high-voltage cables without the need to disconnect the primary circuit, significantly reducing downtime and installation complexity. Its core value lies in providing a safe, accurate, and maintenance-free solution for metering and protection in 10kV systems.

Key Features and Technical Advantages:

Superior Accuracy and Stability: Utilizing high-grade silicon steel cores and advanced winding technology, the LMZK-10 ensures minimal ratio and phase errors across a wide range of operating conditions, crucial for precise energy billing and relay protection.
Robust Open-Type Design: The window-type construction allows for easy retrofitting onto live busbars or cables, making it ideal for system upgrades and expansions without interrupting power supply.
Excellent Insulation Performance: The primary and secondary windings are fully encapsulated with high-quality, flame-retardant epoxy resin. This provides superior dielectric strength, protection against moisture, dust, and corrosive environments, ensuring a long service life even in harsh conditions.
Wide Application Range: Perfectly suited for indoor and outdoor switchgear, ring main units, transformer substations, and various high-voltage power distribution cabinets within 10kV networks.
Flexible Configuration: Available in multiple accuracy classes and a broad range of primary current ratings to match specific project requirements. Secondary outputs are standard 1A or 5A.
Safe and Reliable Operation: Designed with a high safety factor, it features reliable insulation and a sturdy mechanical structure to withstand short-circuit forces and thermal stresses.

Technical Specifications Table:

Parameter	Specification
Rated Voltage (Ur)	10 kV
Rated Frequency	50Hz / 60Hz
Standard Accuracy Class	0.2, 0.5, 1.0 for metering; 5P, 10P for protection
Rated Primary Current (Ipr)	From 100A to 5000A (Customizable)
Rated Secondary Current (Isr)	1A or 5A
Rated Output (VA)	2.5VA, 5VA, 10VA, 15VA, etc.
Insulation Level	LI 75 kV / AC 42 kV
Thermal Short-time Current (Ith)	Typically 50 kA / 1s or as required
Dynamic Current (Idyn)	Typically 125 kA (peak) or as required
Ambient Temperature	-25°C to +40°C (Extended range available)
Installation	Window-type, for busbar or cable pass-through

Benefits for Our Clients:

Cost-Effective Installation: The open-type design eliminates the need for primary conductor disconnection, saving significant labor time and costs during installation or replacement.
Enhanced System Reliability: Accurate measurement ensures optimal grid performance, prevents revenue loss due to metering errors, and provides reliable signals for protective relays to safeguard equipment.
Reduced Maintenance: The fully sealed, resin-cast construction is virtually maintenance-free, lowering the total cost of ownership over the product's lifespan.
Global Compliance: Manufactured in accordance with international standards like IEC 61869, ensuring compatibility and acceptance in our diverse main markets across North America, Europe, Asia, and Africa.

Backed by Jinhua Dika's robust manufacturing capabilities, an annual export value exceeding US$1 million, and a comprehensive quality management system certified to ISO 9001 among others, our LMZK-10 Current Transformer represents a trustworthy investment for your high-voltage applications. Our products are shipped globally from major Chinese ports like Shanghai and Ningbo, ensuring timely delivery. We encourage you to contact us for detailed technical consultations, custom specifications, or competitive quotations. Partner with us to secure a stable and accurate foundation for your power measurement needs.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of an "open type" current transformer?
A: The primary advantage is ease of installation. It can be mounted directly around an existing live busbar or cable without cutting or disconnecting the primary circuit, which minimizes system downtime and installation labor.
Q: Can this current transformer be used for both metering and protection?
A: Yes, the LMZK-10 is available in different accuracy classes. Classes like 0.2 or 0.5 are used for precise energy metering and billing, while classes like 5P or 10P are designed for protection relay circuits.
Q: How do I select the correct primary current rating?
A: The primary current rating should be chosen based on the maximum continuous current expected in the circuit where it will be installed. We offer a wide customizable range and can assist in selecting the optimal rating for your specific load.
Q: Is this product suitable for outdoor installation?
A: Yes. The epoxy resin casting provides excellent protection against environmental factors such as moisture, UV radiation, and pollution, making it suitable for both indoor and outdoor applications in switchyards or substations.
Q: What standards does this current transformer comply with?
A> It is designed and manufactured in compliance with international standards IEC 61869 and the Chinese national standard GB 1208, ensuring global technical acceptance.
Q: What is the typical delivery time for a custom order?
A: For standard specifications, delivery is typically within 15-30 days. For fully customized orders (special current ratings, accuracy, etc.), the lead time may vary, and we provide a specific timeline upon order confirmation.
Q: Do you provide installation guidance or technical support?
A: Absolutely. We provide detailed installation manuals, wiring diagrams, and our technical team is available to offer support throughout the installation and commissioning process.
Q: Can you provide test reports for the products?
A: Yes, we can provide routine test reports for each unit, and type test reports from accredited laboratories are available upon request to verify performance against declared specifications.