MEASTEK MCTD3000A Flexible Rogowski Coil Current Probes

Product Introduction

1. Wide Current Measurement Range: 60A to 1200kA

2. High Accuracy:

• 1% accuracy at the coil center
• 2% typical accuracy across the entire coil (excluding junction areas)

3. Bandwidth Flexibility:

• 600kHz (700mm coil circumference)
• 1MHz (300mm coil circumference)

4. Compact Design:

• Probe ring outer diameter: 8mm (typical)
• Withstand voltage: 10kVpk

5. Application Scope:

• Ideal for medium-to-low frequency, high-current, and high-power testing scenarios.

Product Highlights

1. Lightweight and Flexible Coil Design

• Hot-swappable probe: Ultra-flexible Rogowski coils can enter narrow spaces that rigid probes cannot, ensuring easy connection to the object under test (DUT)

2. Ultra-low interference performance

• Near-zero insertion loss, only a few picohenries, minimizes circuit loading effects.
• Standardized BNC output: Convenient connection with oscilloscopes, data loggers, digital voltmeters, etc., for real-time waveform analysis.

3. Flexible power supply options

• USB-powered operation: Powered by USB interface, enhancing field deployment flexibility.

4. Customization capabilities

• Tailored configuration: Probe ring diameter and cable length can be customized according to specialized test scenarios.

Applications

1. Harmonic Analysis: Measuring the harmonic components in electrical currents.
2. High-Frequency Waveform Detection: Detecting high-frequency sinusoidal current waveforms.
3. Low-Current Measurement: Measuring small currents at 50/60Hz.
4. Phase Shift Analysis: Measuring minor phase shifts in sinusoidal waveforms.
5. Semiconductor Switching: Monitoring current in semiconductor switches.
6. Capacitor Discharge & Ripple Measurement: Conducting capacitor discharge tests and ripple measurements.
7. Distributed Current Monitoring: Monitoring distributed currents in various applications.
8. Busbar Current Monitoring: Measuring currents in power busbars.
9. Power Quality & Harmonic Monitoring: Monitoring harmonics, power levels, and overall power quality.
10. IGBT & MOSFET Current Measurement: Measuring currents in IGBT and MOSFET components.

Model Selection

Specifications

Model MCTDXXXXA3: 300mm circumference, 1MHz bandwidth ; MCTD XXXXA7: 700mm circumference, 600kHz bandwidth

Environmental Parameters:Temperature: 23°C ±1°C；Humidity: 60% RH ±5%

Operational Requirements:The measured conductor must pass vertically through the center of the probe induction loop.

This table specifies the model based on current rating and circumference. Please confirm the interface type with our company when selecting a model to ensure the final specification meets your requirements.

Environmental Characteristics

Device Setup

1. Connection Requirements

   • Attach the probe to grounded measurement devices (oscilloscopes/meters)

   • Configure input resistance to 1MΩ (minimum 100kΩ)

   • Adjust device scaling based on probe sensitivity:

     • 50mV/A → Set to 20X attenuation

     • 1mV/A → Set to 1000X attenuation

2. Power Activation
   Use an external 12V/5V DC adapter. A steady green light confirms operational readiness.

3. Probe Positioning

   • Insert the sensing ring fully until secured (audible click ensures proper fit)

   • Activate the locking dial in unstable environments

   • Thread the test wire through the ring’s geometric center

4. Measurement Process
   Power the circuit only after completing the above steps to safeguard components.

5. Post-Usage Protocol

   • Disconnect power before removing the probe

   • Turn off the device

   • Store in the included moisture-resistant case

Accuracy Assurance

• Centered Placement: Align the wire precisely within the probe ring. Misalignment reduces precision.

• Avoid Joint Areas: Maintain ≥30mm distance from the ring’s connection points, where errors peak.

• Secure Attachment: Confirm full insertion (click sound) to prevent calibration drift.

• Distance from Magnets: Keep >1m from magnetic objects (e.g., coiled wires) during use.

• High-Voltage Avoidance: Stay clear of rapid voltage spikes (>100V/μs) or >1MHz frequency sources.

Interference Check

• Place the unconnected probe near the test wire.

• Measure ambient noise via your instrument.

• Proceed only if noise levels are <2% of the maximum range.

Care & Storage

• Cleaning: Wipe surfaces with a dry microfiber cloth. Never use liquids or solvents.

• Storage: Keep in the original case, away from heat, dust, and humidity.

• Transport: Use the manufacturer’s padded box to prevent shocks.

• Cables: Avoid tugging, tight loops, or sharp bends to preserve internal wiring.

Packing List