YHDC SCT016T Split Core Current Transformer Instruction Manual

1. Introduction

1.1 Product Overview

The YHDC SCT016T is a split core current transformer designed for non-destructive current measurement. It features an open-loop design, making it easy to install without interrupting the primary circuit. This series is suitable for various applications including industrial monitoring, portable instrumentation, and household energy measurement.

1.2 Key Features

• Split Core Design: Allows for easy installation without disconnecting the primary circuit.
• Safety Lock Buckle: Ensures secure closure and reliable operation.
• Built-in Over-voltage Protection: Equipped with a TVS tube for enhanced safety.
• Crimping Terminal Output: Provides a secure and stable connection.
• Suspended Type: Designed for flexible mounting.
• Compact and Lightweight: Small volume and light weight for easy integration.
• High Precision: Offers accurate current measurement.

1.3 Product Applications

• Internet of Things (IoT) industry applications.
• Portable instruments for field measurements.
• Household energy metering.
• Non-destructive testing to monitor motor loads.

2. Product Views

Figure 2.1: General view of the SCT016T current transformer.

Figure 2.2: The SCT016T current transformer in an open state, showing the core.

Figure 2.3: View of the SCT016T current transformer showing the output terminals.

3. Installation

3.1 Safety Precautions

• Ensure power is disconnected before installation to prevent electric shock.
• Verify the primary circuit voltage does not exceed the transformer's rated working voltage (720V).
• For current output type transformers, ensure the secondary circuit is always connected to a load and never open-circuited during operation.
• For voltage output type transformers, ensure the secondary circuit is not short-circuited.

3.2 Installation Steps

The SCT016T current transformer is designed for easy, non-destructive installation on a primary conductor (firing line).

1. Open the Buckle: Gently press the safety lock buckle to release it.
2. Open Upward: Open the transformer core upward to create an opening.
3. Put in Lead Wire: Carefully place the primary conductor (the wire carrying the current to be measured) through the aperture of the transformer. The opening size is 16mm.
4. Fasten the Buckle: Close the transformer core and ensure the safety lock buckle is securely fastened.

3.3 Wiring Schematic Diagram

Note: The specific wiring configuration depends on whether your SCT016T model provides a voltage output or a current output. Refer to the diagrams above for correct connection.

4. Operation

Once correctly installed and wired, the SCT016T current transformer will provide an output signal proportional to the primary current flowing through the conductor. Connect the output terminals to a suitable measurement device (e.g., a multimeter, data logger, or energy meter) that is compatible with the transformer's output type (voltage or current) and range.

• Ensure the measurement device is properly calibrated and configured for the expected input signal.
• Monitor the output for accurate current readings.
• The transformer operates within a frequency range of 50Hz to 1KHz.

5. Maintenance

The YHDC SCT016T current transformer is designed for long-term, maintenance-free operation. However, periodic checks are recommended:

• Visually inspect the transformer and its connections for any signs of damage, wear, or loose wiring.
• Ensure the safety lock buckle remains securely fastened.
• Keep the device clean and free from dust and moisture.
• Do not attempt to open or repair the transformer yourself. Refer to qualified personnel for any issues.

6. Troubleshooting

If you encounter issues with the SCT016T current transformer, consider the following:

• No Output/Incorrect Reading:
  • Check all wiring connections for proper contact and polarity.
  • Ensure the primary conductor is correctly threaded through the transformer aperture.
  • Verify the measurement device is correctly configured for the transformer's output type (voltage or current) and range.
  • For current output models, ensure the secondary circuit is not open. For voltage output models, ensure it is not short-circuited.
  • Confirm the primary current is within the rated input range of the transformer.
• Intermittent Readings:
  • Inspect for loose connections or damaged cables.
  • Check for electromagnetic interference from nearby equipment.
• If problems persist, contact customer support for assistance.

7. Technical Specifications

7.1 General Parameters

• Material of Core: Ferrite
• Work Voltage: ≤ 720V (Phase voltage)
• Working Temperature: -25°C to +60°C
• Storage Temperature: -30°C to +90°C
• Frequency Range: 50Hz to 1KHz
• Dielectric Strength (Input/Output): AC 800V/1min 5mA 50Hz
• Dielectric Strength (Output/Outer Shell): AC 3.5KV/1min 5mA 50Hz
• Accuracy: 1%
• Norma: CE
• Resistance: >100MΩ (500V DC)
• Connection: Cable (50cm length)
• Secondary Turns: 3000±2T
• Phase Offset: +1°±1°
• Weight: 70 g

7.2 Electrical Parameters (Max. Input 160A)

The following tables provide typical values. Actual values may vary slightly based on product batch.

Current Output Models

Voltage Output Models (0.333V)

Note: Parameters such as lead length and lead specifications can be customized according to user requirements.

7.3 Dimensions

All dimensions are in millimeters (mm).

8. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your vendor or the manufacturer directly. Keep your purchase receipt for warranty claims.