Product introduction
The UHV-107 CT PT Volt-ampere Tester is a specialized instrument used in power systems for comprehensive, rapid, and safe testing of core performance parameters of Current Transformers (CTs) and Voltage Transformers (VTs/PTs). It integrates the functions of multiple traditional single-purpose testers, significantly improving field testing efficiency and convenience.
Product Parameters
| Item | Parameter | |
| Working power supply | AC220V±10% ,50Hz | |
| Devices output | 0~2500V (peak value of 20A) Note: 0 to 5A is the true value, and greater than 5A to 20A is the calculated value | |
| High current output | 0～600A | |
| Excitation measurement accuracy | ≤1.0% (0.5%* reading +0.5%* range) | |
| CT ratio
measurement |
The scope of | ≤3000A/1A(15000A/5A) |
| precision | ≤0.5% | |
| PT ratio
measurement |
The scope of | ≤500kV |
| precision | ≤0.5% | |
| The work
environment |
The temperature | －10℃ ～ 40℃ |
| humidity | ≤90% | |
| The altitude | ≤1000m | |
| size | 410mm × 260mm × 340mm | |
| The weight of the | ≤25kg | |
Application Advantages
1.High Efficiency & Convenience: Replaces multiple instruments (excitation tester, ratio bridge, polarity tester), saving significant time, labor, and equipment transport costs.
2.Comprehensive Functionality: Covers the core performance tests for CTs/VTs, providing thorough evaluation data.
3.Operational Safety: Typically features robust safety protections (e.g., overcurrent, overvoltage) with controllable test voltage/current output, far safer than applying actual primary current/voltage in the field.
4.High Automation: Modern testers often include automated testing, data storage, curve plotting, and report generation, reducing human error and improving result accuracy and reliability.
5.Portability: Designed for field use-relatively compact and lightweight, suitable for substations, power plants, and other site environments.
Summary
The UHV-107 CT PT Volt-ampere Tester is a critical diagnostic tool for ensuring the measurement accuracy of instrument transformers and the reliability of protection operations in power systems. It is widely used by power utilities, generation plants, industrial facilities, electrical testing organizations, equipment manufacturers, and metrology institutes throughout the entire lifecycle management of instrument transformers-from production and installation to acceptance, periodic maintenance, fault diagnosis, and condition assessment. Its core value lies in detecting potential transformer issues through efficient, comprehensive, and safe testing, preventing serious accidents such as metering inaccuracies or protection misoperations/failures caused by poor transformer performance, thereby ensuring the safe, stable, and economical operation of the power grid.
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