Frequency Trend Meter is only one of its kinds in the world which can measure the electrical system frequency with the rate of change of frequency. It is based latest technology available today. The main line frequency and rate of change of frequency will stored into the internal memory of the instrument with date and time. User can program the trigger level for recording with respect to frequency and rate of change of frequency. It can be interface with a dedicated computer to record the frequency continously for a long interval of time. It can also be used as independent unit for monitoring line frequecy and rate of change of frequency.The instrument can be interface with the PC for uploading data (frequency, rate of change of frequency, date, time). PC based database management software can be used for displaying frequency, rate of change of frequency, maximum frequency, minimum frequency, rate of change of frequency and graph of all on PC.
Application:
For analyzing power system behavior in case of contingency by continuous, automatic monitoring of dF / dT through PC to avoid unwanted load shedding.
This instrument is must for all load dispatch center and power distribution companies for monitoring the power status and load shading purpose.
This instrument can be used for automatic load shading as well as for analysis of electrical system behaviour in case of grid failure. It can provide very crucial data during grind failure or even can be used to protect grid failure.
Specification:
- Minimum Sampling interval: 20 milli seconds
- Operating Voltage: 230 V AC or 12VDC Battery
- Input Signal Voltage: 230/110 V AC
- FIFO storage buffer, which can hold data for past 24 Hours
Salient Features:
- 7–segment displays for displaying frequency (XX.XX Hz) and rate of change of frequency (XX.XX Hz/Sec)
- Multi level LED indication for rate of change of frequency (dF/ dT). In case rate of change of frequency (dF/ dT) exceeds the set value it will provide an LED indication an ALARM.
- RS-232 port to upload data from Frequency Trend Meter to PC
- PC-based software generates file in EXCEL format so that user can use EXCEL software for analyzing the logged data in tabular and graphics form.
VK Microsystems
