2500A/0.333V HK Split Core Current Transformer: The Ultimate Guide for Power Monitoring and Protection

Introduction to HK Split Core Current Transformers

Looking for a reliable way to monitor high current loads without cutting off power? The HK Split Core Current Transformer (CT) is your go-to solution. Designed with convenience and efficiency in mind, this CT makes installation and maintenance easier while delivering accurate and reliable current measurement.

What Is a Split Core Current Transformer?

A split core CT is essentially a clamp-style transformer that opens up to wrap around a conductor. It eliminates the need to disconnect wires during installation, making it ideal for retrofits or live systems.

Overview of the HK Series

The HK Series CT is purpose-built for electricians, engineers, and system integrators who need precision and flexibility. Whether you’re upgrading your monitoring system or building a new setup, the HK CT offers robust performance across a variety of applications.

Key Features of the HK Series CT

Open Type Design for Convenient Installation

No need to shut down systems or reroute wires. The open design lets you clip the CT around the existing cable, making installation fast, safe, and straightforward.

Bigger Capacity and Mounting Hole Size

With a capacity up to 2500A, this CT can handle even the most demanding applications. The larger central opening accommodates thick cables, giving it broad compatibility.

Quick Release Button Innovation

The CT’s quick-release latch makes it a dream for fast installation. It clicks in securely and is easy to remove or adjust as needed.

Versatile Output Options (0-5A, 0.333V)

Depending on your monitoring equipment, you can choose between standard output (0–5A) or safe, low-voltage output (0.333V), making it suitable for a wide range of metering systems.

Technical Advantages of HK Split Core CTs

High Accuracy Measurements

Expect precision readings with a ratio error of less than ±0.5%. Whether you're monitoring loads for billing or diagnostics, you get dependable data.

Protection Level Up to IP68

This CT can handle tough conditions. The IP68 rating ensures it is resistant to dust and water ingress — ideal for both indoor and outdoor use.

Simple Maintenance and Replacement

Thanks to the split design, maintenance is quick. Open the clamp, clean or replace as needed, and close it back up — no rewiring involved.

Strong Scalability and Flexibility

Whether your system grows or changes, the HK Series CT adapts easily. It integrates smoothly with both traditional and modern setups.

Applications of HK Series Current Transformers

• Electrical wiring and equipment monitoring
• Motor and HVAC system measurements
• Energy monitoring systems
• Relay protection devices

Electrical Specifications and Parameters

• Frequency: 50–400Hz
• Rated Input: 5A–5000A
• Measuring Range: 10%In–120%In
• Rated Output: 0–5A or 0.333V
• Accuracy (Ratio Error): ≤ ±0.5%
• Phase Angle Error: ≤ ±30 minutes
• Dielectric Strength: 2.5KV/1min
• Insulation Resistance: ≥100MΩ at DC500V

Mechanical Specifications

• Case Material: Flame-retardant PC (UL94-V0)
• Bobbin: PBT plastic
• Core Material: Silicon steel
• Internal Structure: Epoxy sealed
• Construction Type: Tie wrap construction
• Operating Temperature: -25°C to +75°C
• Operating Humidity: ≤ 85%
• Output Connection: Terminal type

HK-812 Model Overview

Model	Ratio	Class 0.5 (VA)	Class 1.0 (VA)
HK-812	500/5A	2.5	5
	800/5A	5	5
	1200/5A	10	10
	2500/5A	15	15
	4000/5A	15	15

Conclusion

The 2500A/0.333V HK Split Core Current Transformer is the modern solution for safe, accurate, and efficient current measurement. Whether you're managing a factory floor, office building, or renewable energy system, this CT delivers consistent results without the hassle. With simple installation, high accuracy, and robust protection, it’s a must-have for any serious electrical system.

FAQs

• Q1: How do I install a HK Split Core CT?
  A: Open the clamp, fit it around the cable, and snap it closed — no circuit interruption required.
• Q2: What makes the 2500A/0.333V model unique?
  A: It’s designed for high current applications and offers a safe low-voltage output suitable for modern monitoring systems.
• Q3: Can I use this CT outdoors?
  A: Yes, thanks to its IP68 rating, it performs reliably in harsh outdoor environments.
• Q4: Is it suitable for energy billing systems?
  A: Definitely, especially the Class 0.5 models designed for high accuracy.
• Q5: How long does a typical HK CT last?
  A: With proper use and care, it can last over a decade.