The CSQ-3 is a microprocessor-based synchronising unit. It can be used in any kind of installation where manual or semi-automatic synchronising is required. Two versions optimised for land or marine applications exist. The unit measures the busbar (UBUSBAR) and generator (UGEN) voltages and frequencies and compares these, plus compares the phase angle relationship.
The rotation of the red LED circle indicates the frequency difference. The faster the rotation, the larger the frequency difference. One rotation per second equals 1 Hz difference. The position of the lit red LED indicates the phase difference between UGEN and UBUSBAR. The circle represents a degree scale from 0-360 degrees with zero degree at the 12 o’clock position. With 36 LEDs the resolution on the reading is 10 degrees.
If the frequency difference between UGEN and UBUSBAR is higher than 3 Hz, the rotation of the LED circle stops. If it stops with a lit red LED at “TOO SLOW”, the frequency of the UGEN is lower than UBUSBAR. If it stops with a lit red LED at “TOO FAST”, the frequency of the UGEN is higher than UBUSBAR.
When the phase angle between UGEN and UBUSBAR is within the preset window, then the yellow LED ” OK” will be lit. If the voltage difference between UGEN and UBUSBAR is outside the preset U range, one of the two red LEDs will be lit and the SYNC relay cannot be activated. If the voltage on UGEN is higher than UBUSBAR, LED “UGEN TOO HIGH” will be lit. If the voltage on UGEN is lower than UBUSBAR, LED “UGEN TOO LOW” will be lit.
If both the “UGEN TOO LOW” and “UGEN TOO HIGH” LEDs are lit simultaneously, it indicates an over voltage error at the input.
- Multi-function precision LED synchroscope
- Easy push-button programming of all setpoints
- Very high user safety
- High immunity to harmonic distortion
- Dead-bus functionality
- Version for marine applications
Borna Niroo Karan (Bornika) is the exclusive agent of DEIF in the fields of consultation , sales and distribution of power industry products including Check Synchronising Relay products .