Low Voltage Current Transformers Accurate Metering Protection Up to 720V
目次
Wilmall Low Voltage Current Transformers: Precision and Safety You Can Trust
Wilmall low voltage current transformers (LV CTs) are expertly engineered to convert high primary currents into safe, manageable secondary currents. Designed for low-voltage networks up to 0.72 kV (720V), these high-precision devices are ideal for a wide range of applications including power metering, energy meters, protection relays, and monitoring systems.
Why choose Wilmall LV CT transformers? They deliver superior accuracy そして robust safety features while ensuring easy installation. Fully compliant with global standards like IEC/EN and ANSI/IEEE, Wilmall low voltage CTs provide trustworthy performance across commercial, industrial, and utility environments.
Whether you need precise current measurement for billing or reliable protection in complex electrical systems, Wilmall delivers proven solutions tailored to your requirements—ensuring accuracy, reliability, and peace of mind every step of the way.
Key Features & Benefits of Wilmall Low Voltage Current Transformers
Wilmall low voltage current transformers (LV CTs) bring precision and reliability to power metering and protection in low voltage networks. Here’s why they stand out:
| 特徴 | ベネフィット |
|---|---|
| High Accuracy Classes (0.2, 0.2S, 0.5, 0.5S, 1) | Ideal for billing-grade metering with exact measurements |
| Low Burden Design (1-30 VA typical) | Minimizes measurement errors for better data quality |
| Security Factor (FS5/FS10) | Supports protection applications under high fault currents |
| Wide Primary Current Range: 50A – 5000A+ | Covers diverse industrial, commercial, and utility needs |
| Short-Circuit Withstand Capability | Handles thermal and dynamic stresses during faults safely |
| Compact, Robust Build with Insulation Class E | Durable and safe in harsh environments |
| Safe Secondary Terminals with Sealing Options | Prevents tampering and enhances safety |
| Split-Core Variants Available | Speeds up installation and retrofit without cable removal |
| Compatible with Digital Meters & SCADA Systems | Easy integration with modern energy management setups |
These LV CTs fit perfectly in any low voltage setup up to 720V, ensuring precise current measurement and protection. Their flexible design makes them a top choice for applications demanding accuracy and safety.
For a reliable solution that connects seamlessly with advanced digital metering, check out Wilmall’s options to support your smart grid and energy monitoring needs.
Types / Models Available
Wilmall’s low voltage current transformers come in several tailored types to fit your specific needs:
- Solid-Core (Window Type) – Perfect for new installations where high precision is key. These offer reliable measurement with a durable, compact design.
- Split-Core Low Voltage CT – Designed for quick retrofits, these allow easy installation without having to disconnect existing cables, saving time and effort.
- Busbar, Cable, and Wound Primary Models – Customized solutions made for mounting directly on busbars or cables, ideal for specialized setups.
- Low-Power Voltage Output Variants (0.333V / 1V) – Safer options that eliminate the need for shorting blocks, enhancing safety during operation and maintenance.
- Multi-Ratio Options – Flexible configurations allow you to choose from multiple primary-to-secondary current ratios in one device, simplifying inventory and installation.
These diverse options ensure compatibility with various low voltage metering and protection applications, meeting the global demand for precision and safety. For detailed core designs and types, you can also check our dedicated low voltage current transformer core BH type page for more insights.
Technical Specifications of Wilmall Low Voltage Current Transformers
Wilmal low voltage current transformers (LV CTs) are built to meet diverse industrial and commercial needs with precision and reliability. Here’s a clear overview of their key technical specs:
| 仕様 | 詳細 |
|---|---|
| Highest Voltage Rating | 0.72 kV (720V) |
| Rated Secondary Current | 1A or 5A |
| Rated Primary Current | 50A – 5000A (customizable) |
| Accuracy Classes | Metering: 0.2S, 0.5S Protection: 5P10, 5P15 |
| Burden | 1 VA to 30 VA (options available for higher burden) |
| Short-time Thermal Current (Ith) | Up to 60 × In for 1 second |
| Rated Frequency | 50/60 Hz |
| Operating Temperature | -25°C to +55°C (extended range available) |
| Insulation Class | Class E |
| Standards Compliance | IEC 61869, IEEE C57.13, UL-listed options |
| Dimensions & Weight | Supplied in detailed tables with window/busbar sizes |
These specifications make Wilmall LV CTs expandable and suitable for various power monitoring and protection applications. Their compliance with IEC 61869 and IEEE standards ensures reliability and global compatibility.
For retrofit projects, our split-core current transformers provide flexibility without disconnecting cables—check out our Open Type 250A 1A Split Core Current Transformer for a practical solution.Whether working with power meters, SCADA systems, or protection relays, Wilmall low voltage CTs deliver consistent accuracy and safety you can trust.
Applications of Wilmall Low Voltage Current Transformers
Wilmall low voltage current transformers (LV CTs) are essential for a range of applications in low-voltage electrical systems up to 720V. They enable accurate power metering and energy billing directly from distribution panels, ensuring reliable data for commercial and industrial energy management.
These LV CTs are widely used for current monitoring in switchgear and motor control centers (MCCs), helping operators track load currents and system health in real-time. They also serve crucial roles in protection relays within industrial facilities, quickly detecting faults and preventing equipment damage.
In commercial buildings, Wilmall’s current transformers for power metering support effective load management, helping reduce energy costs and improve efficiency. Their compatibility with smart technologies means they easily integrate with smart meters and power quality analyzers for enhanced monitoring and control systems.
Additionally, the range includes split core current transformer low voltage models ideal for retrofit upgrades in existing systems, enabling safe installation without disconnecting existing cables.Our LV CTs offer dependable performance across these varied applications, supporting precision, safety, and seamless integration with modern energy management setups. For detailed specs and compatible metering solutions, check out our range of current transformers for energy meters and protections.
Installation & Mounting Guidelines for Low Voltage Current Transformers
Installing Wilmall low voltage current transformers (LV CTs) is straightforward when you follow these clear steps designed for safety and accuracy.
Step-by-Step Mounting:
- DIN Rail Mounting: Clip the CT securely onto the DIN rail in your panel, ensuring it sits firmly without movement.
- Panel Mounting: Use the provided screws or brackets to fix the CT to the panel or enclosure, making sure the positioning allows easy access for wiring.
- Busbar Mounting: For busbar or window-type CTs, slide the busbar through the CT window carefully, confirming it fits without stress.
Wiring Secondary Connections:
- Always connect the secondary wiring to the meter or relay terminals according to the wiring diagram supplied with your CT.
- Use appropriate wire sizes and tighten terminal screws firmly to maintain reliable contact.
- Check polarity markings carefully to ensure correct phase and direction for accurate measurement.
Safety Precautions:
- Never leave the secondary circuit open while the primary current flows. Always short the secondary terminals during installation to prevent dangerous high voltage buildup.
- Confirm power is off before starting the installation to avoid electrical shock.
Compatibility Notes:
- Wilmall LV current transformers are compatible with most commercial digital meters, SCADA systems, and protection relays.
- Confirm the CT’s rated secondary current (1A or 5A) matches your meter or relay’s input requirement.
- For retrofit projects, split-core options allow installation without cable disconnection, reducing downtime.
For proper cabling accessories, consider checking our range of SD16 series connectors which work seamlessly with Wilmall LV CTs for secure connections.
Following these guidelines ensures your Wilmall low voltage CT transformer operates safely and delivers precise readings in your power metering and protection applications.
Why Choose Wilmall Low Voltage Current Transformers
Choosing the right low voltage current transformer (LV CT) matters. Here’s why Wilmall’s LV CTs stand out:
| 特徴 | ベネフィット |
|---|---|
| Proven Reliability | Strict quality checks ensure consistent performance |
| Competitive Pricing | Cost-effective solutions without cutting corners |
| Fast Delivery | Quick turnaround to keep your projects on track |
| Customization Options | Tailored ratios, burdens, or sizes to fit any setup |
| Expert Technical Support | Help from skilled engineers when you need it |
| Global Compliance | Meets IEC 61869, ANSI/IEEE, and UL standards for worldwide use |
With Wilmall, you get not just a low voltage current transformer but a trusted partner. Our LV CTs deliver high precision, safety, and compatibility for metering and protection in commercial, industrial, and utility applications.
For detailed product choices, explore our range of current transformers designed to meet diverse needs.
Product Selection Guide / Comparison Table
正しい選択 low voltage current transformer (LV CT) for your application is easier with our comparison table. We break down key specs like primary/secondary ratio, accuracy class, burden, CT type, window size, and typical uses to help you pick the ideal model.
| モデル | Primary/Secondary Ratio | Accuracy Class | Burden (VA) | タイプ | Window Size (mm) | 代表的なアプリケーション |
|---|---|---|---|---|---|---|
| Wilmall Solid-Core 0.2S | 100A/5A | 0.2S | 1-10 | Solid-Core | 40 x 60 | Precision Metering |
| Wilmall Split-Core 0.5 | 200A/5A | 0.5 | 1-15 | Split-Core | 50 x 80 | Retrofit Metering & Monitoring |
| Wilmall Busbar 0.5S | 400A/5A | 0.5S | 3-20 | Busbar | Custom | Industrial Switchgear |
| Wilmall Low-Power 0.2S | 500A/1A | 0.2S | 1-5 | Solid-Core | 60 x 90 | Smart Metering with 333mV Output |
| Wilmall Protection 5P10 | 1000A/5A | 5P10 | 10-30 | Solid-Core | 70 x 120 | Protection Relays & Load Control |
Key Notes:
- Primary/Secondary Ratio: Choose based on your source current and compatible meter or relay input (commonly 5A or 1A output).
- Accuracy Class: Metering class like 0.2, 0.5 for billing-grade; protection class 5P10 for relay applications.
- Burden: The CT’s VA rating matched to your meter’s impedance for minimal error.
- Type: Split-core CTs suit retrofit installations without cable disconnection, while solid-core CTs offer higher accuracy for new setups.
- Window Size: Must fit your busbar or cable dimensions—custom options available for special cases.
For flexible retrofit needs, explore our detailed split-core current transformers designed for easy installation without power interruption.
This guide simplifies selecting the right LV current transformer so your metering and protection systems work accurately and safely. Contact us if you need help matching a CT model exactly to your requirements.
FAQs About Low Voltage Current Transformers
What is the difference between metering and protection CTs?
Metering CTs, like Wilmall low voltage current transformers with accuracy classes (0.2, 0.5), focus on precise measurement for billing and energy monitoring. Protection CTs (e.g., 5P10, 5P15) prioritize reliability and durability to trigger protective devices during faults.
How do I select the right accuracy class and burden?
Choose accuracy based on your application: use higher accuracy (0.2 or 0.5) for billing-grade metering and standard classes (5P10) for protection. Burden ratings (1-30 VA typical for Wilmall LV CTs) should match your connected devices to reduce measurement errors.
Can Wilmall LV CTs be used in 60 Hz systems?
Yes, Wilmall low voltage current transformers support 50/60 Hz frequency, making them suitable for global applications, including those operating at 60 Hz.
What is the lead time for custom ratios?
Custom current ratio options are available, with typical lead times depending on order size and specifications. Contact Wilmall’s expert support for specific delivery schedules tailored to your needs.
For expert assistance or guidance on applying Wilmall LV CTs with industrial remote control systems, you can explore detailed solutions on Wilmall’s site.
Related Products & Accessories
To complement our Wilmall low voltage current transformers, we offer a range of related products and accessories designed to optimize your installation and ensure reliable operation:
- Compatible energy meters – Our LV current transformers work seamlessly with various energy meters for accurate power metering and monitoring.
- Shorting blocks and terminal covers – Essential for protecting the low voltage CT secondary connections during installation and maintenance.
- Mounting brackets and enclosures – Secure your Low Voltage CT transformers safely in switchgear, panels, or busbar setups with our robust mounting solutions.
These accessories help you get the most out of your low voltage CT transformer system, ensuring safety, accuracy, and ease of use in your commercial, industrial, or utility applications. For secure cabling with your CTs, consider pairing with our reliable M-Series M20 cable glands designed for dependable, watertight connections.
Get in Touch for Your Low Voltage Current Transformer Needs
Ready to find the perfect Wilmall low voltage current transformer for your application? Request a personalized quote today to get started. You can also download our detailed datasheet and catalog PDF for in-depth product specifications and comparisons.
If you need help selecting the right LV CT transformer or require custom sizing advice, our expert Wilmall sales team is just a call or email away. We’re here to support your low voltage metering, protection, and monitoring needs with reliable guidance and fast service.Explore your options, download technical information, or contact us now to ensure you get the best current transformer for power metering and protection in your system.
