EN
CPT-13 CT/PT Analyzer 0.02% Accuracy Current & Voltage Transformer Tester
The CPT-13 is a high-precision fully automatic CT/PT analyzer purpose-built for on-site commissioning, routine maintenance and fault diagnosis of current and voltage transformers in HV power systems. With 0.02% core measurement accuracy, it completes comprehensive tests including turns ratio, polarity, excitation characteristics, burden, phase angle and ratio error in one single run.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The CPT-13 CT/PT Analyzer is a high-precision, fully integrated instrument designed for comprehensive testing and calibration of current transformers (CTs) and voltage transformers (PTs) used in power systems. Adopting advanced digital signal processing (DSP) technology, high-resolution data acquisition system, and industrial-grade touchscreen interface, it delivers accurate, repeatable measurements of all critical CT/PT parameters in a single test.
With a wide measurement range (CT: 1–50000, PT: 1–30000) and industry-leading 0.02% accuracy class, this analyzer supports testing for both metering (M) and protection (P/TP) class CTs, as well as electromagnetic PTs and CVTs. Fully compliant with IEC 60044, IEEE C57.13, and GB 1208 international standards, it is the ideal solution for power utilities, transformer manufacturers, substation maintenance teams, and third-party testing laboratories worldwide. It is optimized for factory acceptance testing, on-site commissioning, routine maintenance, and fault diagnosis of CT/PT assets.
Specifications
| Parameter Category | Specification |
| Core Performance | |
| Model | CPT-13 |
| Accuracy Class | 0.02% (ratio), ±2min (phase angle) |
| CT Ratio Range | 1 ~ 50000 |
| PT Ratio Range | 1 ~ 30000 |
| Current Measurement | 0~10A (auto-range), error <±0.1%+0.01%FS |
| Voltage Measurement | 0~200V (auto-range), error <±0.1%+0.01%FS |
| Phase Angle Accuracy | ±2min (resolution: 0.01min) |
| Secondary Resistance | 0~200Ω, ±0.1%RDG+0.01Ω |
| Test Functions | |
| CT Tests | Excitation, ratio error, phase displacement, polarity, winding resistance, burden, 5%/10% error curve, knee point, ALF, FS, Ts, Kr |
| PT Tests | Excitation, ratio error, phase displacement, polarity, winding resistance, burden |
| Control & Operation | |
| Display | 7-inch color TFT touchscreen (English) |
| Operation Mode | Fully automatic + manual mode |
| Data Storage | 1000 test records (with curves) |
| Output | Built-in thermal printer, USB export |
| Communication | Ethernet, USB |
| Power & Environmental | |
| Power Supply | AC 220V±10%, 50/60Hz±10% |
| Power Consumption | ≤300VA |
| Operating Temperature | -10℃ ~ 50℃ |
| Operating Humidity | ≤90% RH (non-condensing) |
| Dimensions (L×W×H) | 420mm × 330mm × 320mm |
| Net Weight | ≤9kg |
| Compliance | IEC 60044, IEEE C57.13, GB 1208, GB 16847, CE |
Applications
Core Test Objects
· Metering class CTs (0.1/0.2/0.5S) and protection class CTs (P/TP/PS)
· Electromagnetic voltage transformers (PTs) and capacitive voltage transformers (CVTs)
· High-voltage CT/PTs for 10kV–500kV power systems
· Auxiliary transformers and special transformers in industrial power systems
Industry-Specific Usage
· Electric Power Utilities: Substation CT/PT routine maintenance, on-site calibration, and fault diagnosis
· Transformer Manufacturers: Factory acceptance testing (FAT), production line quality control, and type testing
· Grid Companies: CT/PT parameter verification for grid access and metering accuracy assurance
· Industrial Facilities: Power system CT/PT testing in manufacturing plants, oil refineries, and data centers
· Rail Transit: Traction power supply system CT/PT testing for metro and high-speed railway
· Third-Party Labs: Compliance testing, calibration, and certification per international standards
· Research Institutions: Transformer characteristic research and power system simulation testing
Advantages
Unmatched High Precision & Accuracy
0.02% ratio measurement accuracy and ±2min phase angle accuracy ensure reliable calibration results—critical for metering accuracy and protection system reliability in power grids.
All-In-One Full-Parameter Testing
Combines CT excitation, ratio, polarity, resistance, burden, and error curve testing with PT comprehensive testing in one instrument, eliminating the need for multiple devices and reducing test time.
True "Walk-Away" Automation
One-click fully automatic operation simplifies complex testing procedures, reduces human error, and improves on-site work efficiency—even for less experienced operators.
Portable Design for Lab & Field Use
Lightweight compact design with rugged enclosure enables easy transportation and reliable operation in both laboratory and harsh substation environments.
Comprehensive Data Management
Built-in storage, printer, and USB export functions support on-site report generation and offline data analysis, meeting the strict documentation requirements of power industry quality management.
FAQ
Q: What standards does the CPT-13 comply with?
A: It meets IEC 60044-1/6, IEEE C57.13, GB 1208, and GB 16847 international standards, ensuring global recognition of test results.
Q: What is the accuracy class of the analyzer?
A: The CPT-13 features an accuracy class of 0.02% for ratio measurement and ±2min for phase angle measurement, suitable for high-precision calibration of metering and protection CT/PTs.
Q: Can it test both CTs and PTs?
A: Yes. It supports comprehensive testing for both current transformers (CTs) and voltage transformers (PTs/CVTs), covering all critical parameters in one instrument.
Q: Is the test fully automatic?
A: Absolutely. After connecting the transformer and setting parameters, the analyzer automatically completes the entire test process—from data acquisition to report generation—with no manual intervention required.
Q: What is the ratio range supported?
A: The CT ratio range is 1–50000, and the PT ratio range is 1–30000, covering all common CT/PT specifications used in 10kV–500kV power systems.
Q: Does it support on-site report generation?
A: Yes. It has a built-in thermal printer that can generate standardized test reports on-site, including test data, excitation curves, error curves, and result evaluations.
Q: Is it suitable for field use in substations?
A: Yes. The CPT-13 features a portable lightweight design (≤9kg), rugged enclosure, and wide operating temperature range (-10℃ ~ 50℃), making it ideal for on-site testing in harsh substation environments.
Q: What is the warranty and after-sales support?
A: We offer a 1-year standard warranty, lifetime technical support, global after-sales service, including on-site commissioning, operation training, and calibration services.
