Very Fast Transient (VFT) Measuring System
Digital Recorder with 200 MS/s sampling rate and 12 Bit resolution, remote controlled by external Laptop
VFT-Measuring System TR-AS RC for VFT
The VFT-Measuring System TR-AS RC for VFT is special designed for high bandwidth and allows measurements of very fast transients (VFT) in a frequency range from power frequency up to 100 MHz directly with help of capacitive sensors, e.g. PD-sensors installed in Gas - Insulated Switchgear (GIS).
Additionally measurement of lightning and switching impulse voltages as also A.C. measurements on the finally installed GIS can be performed.
Principle of measuring system
The measuring system consists of an electrical field sensor with capacitance C1, a directly coupled low voltage capacitor and a coaxial measuring line with capacitance C2 which forms together a capacitive voltage divider with a ratio of approximately C2:C1. The measuring line is connected to the 250 V input of the digital recorder which includes an input divider with ratio 25:1. The 10 V output of the divider is connected with a BNC-bridge to the 10 V input of the programmable measuring amplifier channel 1 of the digital recorder.
The VFT-Measuring System is remote controlled via the local area network (LAN) by an external Laptop Computer with special remote control software. The VFT-Measuring System includes an Industry computer with hard disc and LAN interface but without display and keyboard. The WinTRAS-Software for control and measurement is installed on the hard disc of the VFT-Measuring System and can be transparently operated with help of the remote control software on the Laptop Computer.