△ CTP transformer tester application site

Key Features

• Compliance with IEC 6044-6: The CTP tester performs CT tests at frequencies below rated values, preventing excessive voltage stress on windings and terminals.

• Square Wave Technology: Enables high-accuracy testing of saturation characteristics, including knee-point voltage (up to 50,000V) and current (up to 4A), suitable for protection-class CTs, metering-class TPY/TPX CTs, and bushing CTs across all voltage levels.

• Unmatched Precision: Achieves 0.05% accuracy in ratio, polarity, excitation curves, phase angle, and ratio/phase errors.

Case Study: 220kV Substation Application

• Test Scope: Evaluated 5P30 and TPY-class CTs with a 4000:1 ratio.

• Efficiency Gains: Reduced excitation saturation test time from 107 seconds to 65 seconds per CT.

• Automated Reporting: Instantly prints test data (ratio, polarity, knee-point values) and exports 5%/10% error curves for analysis.

Why It Matters
Traditional CT testing often requires multiple devices and manual calculations. The CTP tester consolidates these tasks into a single platform, cutting downtime and human error risks—a critical advantage for substations with tight maintenance windows.

FDT Series DC System Comprehensive Tester: Simplifying Battery Testing

△ FDT Series DC System Integrated Tester Application Site

Key Features

• All-in-One Design: Integrates battery discharge/charge testing, ripple coefficient analysis, and voltage/current stability verification.

• Modular Flexibility:

  • Standalone mode supports 500Ah battery discharge tests.

  • With load expansion units, handles up to 1,800Ah systems.

  • Wireless battery monitoring: Tracks 2V/6V/12V单体 voltages in real time.

• Advanced Visualization: Displays voltage/current curves, ripple waveforms (oscilloscope mode), and auto-generates test reports.

Case Study: Substation Battery Maintenance

• Challenge: Testing a 500Ah battery bank with conventional equipment required bulky, 35kg devices.

• Solution: The portable FDT tester (weighing 70% less) performed discharge tests, ripple analysis, and stability checks in a single setup.

• Outcome: Reduced fieldwork complexity and enabled rapid decision-making through real-time data graphs.

Why It Matters
As substations adopt larger battery systems for backup power, the FDT series eliminates the need for multiple tools, offering a lightweight, scalable solution compatible with 48V/110V/220V systems.

MDJ-800 DC System Selectivity Tester: Preventing Cascading Failures

△ Application Site of MDJ-800 DC System Differential Matching Characteristic Tester