EN
CPT-103 Current & Voltage Transformer Calibration Test System
CPT-103 Digital Intelligent Full-Automatic Current & Voltage Transformer Calibration Test System with Program-controlled Current/Voltage Booster, Standard Transformer Set, Professional PC Software, for Metering Transformer Laboratory Verification and Factory Quality Control.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
CPT-103 is a professional full-automatic transformer calibration test system designed for periodic verification, type test and factory quality inspection of measuring current transformers and voltage transformers in power supply metrology departments, transformer manufacturers, third-party testing institutions and power research institutes. It strictly complies with JJG 313-2010, JJG 314-2010, GB 1207-2017 and IEC 61869 series standards, adopting digital synchronous sampling and error separation technology that achieves high-precision measurement of ratio error and phase error, with stable and reliable test results traceable to national metrological standards.
The system integrates program-controlled current booster, program-controlled voltage booster, standard transformer set, burden simulation unit and host calibrator, controlled by professional PC software, realizing one-click completion of the whole test process: automatic voltage/current rise, data synchronous acquisition, error calculation, accuracy grade judgment and test report generation. It supports multiple wiring methods including direct connection and difference method, automatically identifies transformer types, and covers full-parameter tests of ratio error, phase error, secondary winding impedance, excitation characteristics and burden.
Specifications
| Parameter | Specification |
|---|---|
| Compliance Standards | JJG 313-2010, JJG 314-2010, GB 1207-2017, GB 1208-2016, IEC 61869-2/3, DL/T 1693-2017 |
| Measurement Accuracy Class | 0.05 class (calibrator host) |
| Standard Transformer Class | 0.02 class (supporting standard CT/PT set) |
| Current Transformer Test | |
| Secondary Rated Current | 5A / 1A (compatible) |
| Primary Current Range | 5A ~ 5000A (expandable) |
| Ratio Error Range | -10% ~ +10% |
| Ratio Error Resolution | 0.001% |
| Phase Error Range | -600' ~ +600' |
| Phase Error Resolution | 0.01' |
| Voltage Transformer Test | |
| Secondary Rated Voltage | 100V / 100/√3 V (compatible) |
| Primary Voltage Range | 1kV ~ 220kV (expandable) |
| Ratio Error Range | -10% ~ +10% |
| Ratio Error Resolution | 0.001% |
| Phase Error Range | -600' ~ +600' |
| Phase Error Resolution | 0.01' |
| Test Items | Ratio error, phase error, secondary DC resistance, excitation characteristics, burden test |
| Test Modes | Full automatic test / manual step test / single-point verification |
| Control Mode | PC software control, USB communication |
| Built-in Booster | Program-controlled current booster + program-controlled voltage booster, servo motor voltage regulation |
| Data Management | Large-capacity database, historical query, standard report generation, Word/Excel export |
| Input Power Supply | AC 220V ± 10%, 50Hz ± 2Hz |
| Operating Temperature | 0℃ ~ +40℃ |
| Ambient Humidity | ≤85% RH (non-condensing) |
| Working Position | Desktop laboratory type |
| Language Support | Chinese / English bilingual |
Applications
Core Test Objects
- Current transformers (CT): Measuring current transformers of 0.2S, 0.2, 0.5, 1.0 accuracy grades for metering and protection
- Voltage transformers (PT/VT): Measuring voltage transformers of 0.2, 0.5, 1.0 accuracy grades for metering and protection
- Other transformers: Combined transformers, low-voltage transformers, current transformers for protection
Typical Usage Scenarios
- Power supply metrology departments: Periodic verification of transformers in the jurisdiction, metrological calibration, standard device transmission
- Transformer manufacturers: Finished product factory inspection, raw material incoming inspection, type test assistance, quality control
- Third-party testing institutions: Transformer metrological verification, product quality certification, inspection and testing services
- Power research institutes: Transformer performance research, new product test, standard formulation test
- Industrial enterprises: Internal metering transformer periodic verification, energy metering management
Advantages
Compliance with National & International Metrological Standards
Fully meets JJG 313/314, IEC 61869, GB 1207/1208 → test methods and indicators comply with metrological specifications, results are authoritative and traceable
0.05 Class High-Precision Measurement
Metrology-grade sampling circuit, standard transformer traceability → accurate measurement of tiny ratio and phase errors, meets 0.1 class and below transformer verification requirements
Fully Automatic One-Click Test
Whole process automatic completion from boost to report → reduces manual operation errors, improves test efficiency by 80%, reduces work intensity of metrology personnel
Complete Integrated Set Configuration
Calibrator + booster + standard transformer + burden box all included → no additional matching required, ready to use out of the box, quick laboratory deployment
Professional Metrological Data Management
Mass database + standard report template + traceable query → meets metrological management specifications, facilitates data archiving and quality traceability
Modular Flexible Expansion Design
Each unit is independent, supports capacity and accuracy upgrade → adapts to future business expansion needs, extends equipment service life
High Cost Performance Laboratory Solution
Mature and stable circuit, simple operation, affordable price → ideal for grassroots metrology departments and small and medium-sized transformer manufacturers
FAQ
Q: What accuracy grade of transformers can CPT-103 calibrate?
A: The measurement accuracy of CPT-103 calibrator host reaches 0.05 class, and it is equipped with 0.02 class standard transformers as measurement standards. It can calibrate current and voltage transformers with accuracy grade of 0.1 class and below (including 0.2S, 0.2, 0.5, 1.0 class), which fully meets the requirements of routine periodic verification and factory quality inspection. For higher-grade transformers, it can be upgraded with higher-grade standard transformers.
Q: What is the difference between this system and a single transformer calibrator?
A: A single transformer calibrator only has the measurement function, and needs to be equipped with additional boosters, standard transformers, burden boxes and other equipment, which requires users to match and debug by themselves. CPT-103 is a complete set of calibration system, which integrates all required units, and is matched and calibrated before delivery. It can be used directly after simple wiring, with better test consistency and higher work efficiency, which is more suitable for newly built laboratories and users who need complete solutions.
Q: Can it automatically generate test reports that meet metrological requirements?
A: Yes. The system has built-in standard verification report templates that fully comply with JJG national metrological verification procedures, which can automatically generate standardized test reports with test data, error curves and qualification conclusions. The reports support printing and export in Word/Excel formats, which fully meet the requirements of metrological management, data archiving and quality traceability.
Q: Is this system suitable for on-site test?
A: CPT-103 is a desktop laboratory-type calibration system, which is mainly used for fixed test in metrology rooms and laboratories. Its integrated structure has complete functions and high test accuracy, but it is not convenient for frequent movement. For on-site transformer verification, portable transformer calibrator products are recommended.
