Substation Maintenance
ART-3D – Automatic Ratio Tester
Real three phase automatic ratio tester for power transformer
The ART-3D series of ratio meters are high precision instruments, designed to measure turn ratios, phase displacements, excitation currents of single phase and three phase power, distribution and instrument transformers in conformity to the IEEE C57.12.90 & IEC 60076.
Features
- Much lighter and handier than other equipment in its category
- Shock resistant, it is suitable for all types of applications: work site or laboratory
- The LCD display is equipped with a backlight to allow work in any conditions
- Weak current injection for applications that require small measurement contacts
- Many accessories are available for your application such as exothermic welding (Cadweld®), measurements on very small surfaces.
CTT Series – Current Transformer Tester
Automatic current transformer tester
The CTT instrument allows testing ratio, phase shift, polarity, saturation, winding resistance and insulation resistance on protection class current transformers (CT) using the voltage method in compliance with ANSI/IEEE C57.13.1 & IEC 60044-1 standards. Two models are available: CTTx2 for 2 tap transformers, and CTTx5 for 5 tap transformers.
Features
- High resolution color LCD display
- All automatic sequence
- Rugged designed for field applications
- Large internal memory
- Full keypad
- Built-in printer
- Easy reporting with Report Manager software
WRT-10 Series – Winding Resistance Tester
Winding resistance tester for power transformers
The WRT-10D is a high-performance winding resistance tester designed for power transformers and large motor applications. Its interface includes a large color display, full keypad, thermal printer and USB port for easy data transfer
Features
- Rugged, highly regulated and filtered out put current source for fast stabilized measurements
- High Accuracy 0.1% of reading
- High resolution with 4 ½ display, 0.1μΩ
- Large, Color LCD display
- Full QWERTY keyboard for easy data entry
- Large internal memory
- Reporting software automatically generates a finished report from PC
- Built-in thermal Printer



