Product Introduction
The CT/PT Volt-Ampere Characteristic Tester is a portable field instrument that automates comprehensive testing of protection-class (P-class) and metering-class CTs/PTs. It performs key assessments including excitation curve measurement with automatic knee-point detection, 5%/10% error curve generation, ratio verification, polarity checks, and secondary burden testing – all without external equipment. Compliant with GB 20840.3-2013/IEC standards, the integrated solution features a large graphical LCD and intuitive controls for simplified operation, with a built-in thermal printer for on-site reporting and USB data export for generating Word reports. Weighing ≤22kg with 3,000+ battery-backed test storage, it delivers laboratory-grade accuracy in field conditions.
Key Advantages of CT/PT Volt-Ampere Characteristic Tester
1、Standards-Driven Compliance
Certified for GB 20840.3-2013 + IEC 60044 (global regulatory acceptance)
2、Unmatched Field Efficiency
≤22 kg all-in-one design – Replaces multiple devices; zero external equipment required
Instant micro-thermal printing – On-site report generation in 8 seconds
3、Engineered Precision
AI-assisted analysis – Auto-calculates knee-point with ≤0.5% repeatability
Dynamic error mapping – Generates 5%/10% composite accuracy curves
4、Industrial-Grade Resilience
3,200 test records – Military-grade flash storage with supercapacitor backup
-25°C to 55°C operational range – Verified in Qinghai-Tibet Plateau field trials
5、Seamless Data Integration
Smart USB 3.0 export – One-click generation of IEC 61850-compliant Word/PDF reports
6、Zero-Curve Learning Operation
Intuitive graphical UI with guided workflow –
Technical Parameter
| Item | parameter | |
| Working power supply | AC220V±10% 、50Hz | |
| Device output | 0~2500V 5kVA Maximum setting value 20A | |
| High current output | 0～600A | |
| Excitation precision | ≤0.5%（0.2%* reading +0.3%* range) | |
| Secondary winding resistance measurement | scope of | 0.1～300Ω |
| precision | ≤1.0% (0.4%* reading +0.6%* range) | |
| Secondary actual load measurement | scope of | 5～500VA |
| precision | ≤0.5%（0.2%* reading +0.3%* range) ± 0.1va | |
| Phase measurement (Angle difference) | precision | ±4min |
| resolution of the | 0.1min | |
| contrast | precision | 0.05% |
| CT ratio measurement | scope of | ≤25000A/5A（5000A/1A） |
| precision | ≤0.5% (0.2%* reading +0.3%* range) | |
| PT ratio measurement | scope of | ≤500kV |
| precision | ≤0.5% (0.2%* reading +0.3%* range) | |
| work environment | temperature | －10℃ ～ 40℃ |
| humidity | ≤90% | |
| altitude | ≤1000m | |
| size | 410mm × 260mm × 340mm | |
| weight | ≤22kg | |
