LDCTP-1200D Variable Frequency Transformer Comprehensive Tester is a high-performance and multifunctional testing equipment designed specifically for the comprehensive testing of current transformers (CT) and voltage transformers (PT). This tester integrates multiple testing functions such as resistance, excitation characteristics, transformation ratio, polarity, secondary winding resistance, secondary load, ratio difference, and angle difference, fully meeting the testing needs of various types of transformers. Adopting advanced low-frequency testing principles, it can cope with CT testing with inflection points up to 80KV, ensuring the accuracy and reliability of test results. At the same time, the tester supports one click completion of CT direct resistance, excitation, transformation ratio, and polarity testing, making operation simple and fast. In addition, the tester also has a powerful data storage function, which can store 3000 sets of test data, making it convenient for users to manage and analyze data.
| Input power voltage | AC 100~264V，60Hz |
| Output | 0~180V rms, 12A rms, 36A (peak) |
| Voltage measurement accuracy | Range: 2~200Vrms, precision: ± 0.1% |
| CT variation ratio measurements | Range: 1~40000, precision: ± 0.1% |
| PT variation ratio measurements | Range: 1~40000, precision: ± 0.1% |
| Phase measurement | Precision: ± 2min, resolution: 0.5min |
| Turbine resistance measurement | Range: 0~300 Ω, precision: 0.2% ± 2m |
| AC load measurement | Range: 0~1000VA, precision: 0.2%±0.02VA |
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. 2. To learn more about Longdian products, please enter the product center. Service Hotline: 400-6727-238
Support the testing of key items such as excitation characteristics, transformation ratio, polarity, winding resistance, secondary load, ratio difference, and angle difference for CT/PT, covering various types of transformers such as protection level, metering level, and transient protection level (TPY), meeting the requirements of international and domestic standards such as GB/IEC.
Automatically calculate parameters such as inflection point voltage/current, 10% (5%) error curve, accurate limit factor (ALF), instrument safety factor (FS), etc., and generate a complete test report with just one click.
Adopting advanced low-frequency testing technology, it can cope with CT testing up to 80kV inflection point voltage, combined with internationally leading square wave method, to ensure accurate and smooth excitation curve.
The measurement accuracy reaches ± 0.1% (voltage/transformation ratio), the winding resistance accuracy is 0.2% ± 2m Ω, and the phase resolution is 0.5min, meeting the rigorous industrial testing requirements.
7-inch large screen interactive interface, clear and intuitive parameter settings, supports multiple CT tests using the same wiring method, greatly improving efficiency.
Built in storage of 3000 sets of data, no loss in case of power failure, supports USB export and import for easy data management and traceability.
Lightweight design (only 7kg), compact body (340 × 260 × 140mm), suitable for various environments such as laboratories, substations, and outdoor sites.
Wide power input (AC 110~264V), temperature resistance range -20 ℃~50 ℃, equipped with multiple safety protection mechanisms to ensure equipment and personnel safety.
Optional current boosting function (0~150A), supporting transient characteristic analysis, meeting the needs of multiple scenarios such as power system operation and maintenance, transformer production quality inspection, scientific research experiments, etc.
