Product Introduction
The F144-S synchronization indicator measures the frequency and phase difference between the generator voltage and the grid voltage. When the frequency (f) of the generator to be paralleled is greater than the grid frequency (f), i.e., Δf = f - f0 > 0, the moving light point rotates clockwise (the "faster" direction). Conversely, when Δf = f - f0 < 0, the moving light point rotates counterclockwise (the "slower" direction). The rotation rate of the moving light point is the frequency difference Δf, and the frequency difference |Δf| = 1/T can be estimated by the time T it takes for the moving light point to rotate one revolution. For example, if the time for the moving light point to rotate one revolution is approximately 5 seconds, then the frequency difference is |Δf| = 1/T = 1/5 = 0.2Hz. When the phase difference is close to zero, the two LEDs (one red and one green) at the synchronization marker (12 o'clock position) light up simultaneously, indicating that the generator to be paralleled can be closed.
Specifications
F144-S Synchronization Indicator
The synchronization indicator measures the frequency and phase difference between the generator voltage and the grid voltage. When the frequency (f) of the generator to be paralleled is greater than the grid frequency (f), i.e., Δf = f - f0 > 0, the moving light point rotates clockwise (the "faster" direction). Conversely, when Δf = f - f0 < 0, the moving light point rotates counterclockwise (the "slower" direction). The rotation rate of the moving light point is the frequency difference Δf. Thus, the frequency difference |Δf| = 1/T can be estimated by listening to the time T it takes for the moving light point to rotate one revolution. For example, if the time for the moving light point to rotate one revolution is approximately 5 seconds, then the frequency difference is |Δf| = 1/T = 1/5 = 0.2Hz.
When the phase difference is close to zero, the two LEDs (one red and one green) at the synchronization marker (12 o'clock position) light up simultaneously, indicating that the generator to be paralleled can be closed.
F144-S Synchronization Indicator Description: Electronic Illuminated Synchronization Meter
I. Electronic Illuminated Synchronization Meter
This synchronization indicator uses LEDs to indicate the frequency and phase differences between two generator sets to be operated in parallel.
1. The indicator will function normally when the system voltage variation is within ±10% of the rated voltage and the frequency difference between the generator to be paralleled and the system is less than 2Hz.
2. The indicator's power consumption is <3VA.
3. The indicator light resolution is 10° electrical angle per light.
4. When paralleling, the operating generator's measuring switch must be closed first. At this time, the 36 indicator lights on the surface are in a random state. Then, close the measuring switch of the generator to be paralleled, and the indicator lights will start rotating. The rotation speed and position indicate the frequency difference, phase difference, and direction of the two generators.
5. The indicator has 36 indicator lights distributed in a circle, each representing 10° electrical angle. The indicator light at the top center at 12 o'clock represents 360°. The green indicator light is synchronized with the indicator light at the 12 o'clock position.
6. When the frequency difference between the working generator set and the generator set to be connected is less than 0.2 Hz and the phase difference is between 350° and 360°, the green indicator light above will light up, and the generator set to be connected can be connected to the grid at this time.
