The KDHG-HT All-in-One Transformer Tester is a high-precision, portable testing solution designed for comprehensive evaluation of Current Transformers (CTs) and Potential Transformers (PTs) in power systems. Engineered to meet international standards (e.g., GB1207, GB1208), this device integrates advanced features such as voltage-ampere characteristic analysis, ratio measurement, polarity detection, insulation withstand testing, and core demagnetization into a single platform. Its versatility makes it ideal for testing protective and metering-grade CTs/PTs up to 35kV, catering to both laboratory environments and field operations.

With a user-friendly interface and automated testing capabilities, the KDHG-HT delivers accurate results while minimizing manual intervention. Key highlights include:

High-precision excitation curve analysis with automatic calculation of knee-point voltage/current and 5%/10% error curves.
Wide measurement range: CT ratio testing up to 25,000A/5A, PT ratio testing up to 5,000V, and output capacity ≥0.5VA.
Robust portability: Weighing ≤25 kg and compact dimensions (410×260×340 mm), it ensures ease of transport for on-site diagnostics.
Data management: Stores up to 3,000 test records, supports USB data transfer, and generates Word-formatted reports for seamless documentation.
Whether for power grid maintenance, factory acceptance testing, or R&D applications, the KDHG-HT ensures reliable performance under demanding conditions (-10°C to +40°C, ≤90% humidity). Its all-in-one design eliminates the need for multiple instruments, reducing operational costs and enhancing efficiency.

Ideal for utility companies, electrical contractors, and industrial facilities, the KDHG-HT is the ultimate tool for ensuring the accuracy, safety, and compliance of CT/PT systems in modern power networks.

1. All-in-One Testing Capabilities

   • Supports comprehensive testing of CTs (Current Transformers) and PTs (Potential Transformers), including excitation curves, ratio measurement, polarity detection, insulation withstand testing, and core demagnetization.
   • Automatically generates 5% and 10% error curves, knee-point voltage/current, and limiting factor (ALF) calculations for CTs.

2. High Precision & Reliability

   • Wide measurement range: CT ratio testing up to 25,000A/5A, PT ratio testing up to 5,000V, with accuracy ≤ 0.5%.
   • Output capacity ≥ 0.5VA (0.3% reading + 0.2% range error).
   • Complies with GB1207, GB1208, and international standards for safety and accuracy.

3. Portability & Durability

   • Compact design (410×260×340 mm) and lightweight (≤ 25 kg) for easy transport and on-site testing.
   • Operates in harsh environments (-10°C to +40°C, humidity ≤ 90%).

4. User-Friendly Interface

   • Large LCD screen with graphical display and intuitive Chinese/English menu navigation.
   • Automated testing workflows reduce manual input and minimize human error.

5. Efficient Data Management

   • Stores up to 3,000 test records with USB data transfer support.
   • Built-in mini-printer for instant on-site result printing.
   • Generates Word-formatted reports for seamless documentation and analysis.

6. Safety & Compliance

   • Integrated AC withstand voltage testing to verify insulation integrity.
   • Core demagnetization function ensures accurate measurements by eliminating residual magnetism.

7. Versatile Applications

   • Ideal for power system maintenance, factory acceptance testing, R&D labs, and field commissioning.

8. Cost-Effective Solution

   • Eliminates the need for multiple standalone instruments, reducing equipment costs and operational complexity.

All-in-One Testing Capabilities
Supports comprehensive testing of CTs (Current Transformers) and PTs (Potential Transformers), including excitation curves, ratio measurement, polarity detection, insulation withstand testing, and core demagnetization.
Automatically generates 5% and 10% error curves, knee-point voltage/current, and limiting factor (ALF) calculations for CTs.
High Precision & Reliability
Wide measurement range: CT ratio testing up to 25,000A/5A, PT ratio testing up to 5,000V, with accuracy ≤ 0.5%.
Output capacity ≥ 0.5VA (0.3% reading + 0.2% range error).
Complies with GB1207, GB1208, and international standards for safety and accuracy.
Portability & Durability
Compact design (410×260×340 mm) and lightweight (≤ 25 kg) for easy transport and on-site testing.
Operates in harsh environments (-10°C to +40°C, humidity ≤ 90%).
User-Friendly Interface
Large LCD screen with graphical display and intuitive Chinese/English menu navigation.
Automated testing workflows reduce manual input and minimize human error.
Efficient Data Management
Stores up to 3,000 test records with USB data transfer support.
Built-in mini-printer for instant on-site result printing.
Generates Word-formatted reports for seamless documentation and analysis.
Safety & Compliance
Integrated AC withstand voltage testing to verify insulation integrity.
Core demagnetization function ensures accurate measurements by eliminating residual magnetism.
Versatile Applications
Ideal for power system maintenance, factory acceptance testing, R&D labs, and field commissioning.
Cost-Effective Solution
Eliminates the need for multiple standalone instruments, reducing equipment costs and operational complexity.