The relay is meant for flush mounting in a panel for connection to the electrical system.The relay is the ‘intelligence’ which controls the automatic system for correction of the power factor. It senses the power factor by taking the ratio of the KW and the true rms KVA of the system, for any phase to neutral or phase to phase connections of the three phase electrical system.
This means that phase to neutral or phase to phase are connected to the meter as voltage inputs and current of the same phase or different phase as current input. For correct operation of the relay, however there are some minimum requirements should be met.
Unless the various points in the system which are mentioned below are correctly setup, proper operation of the relay cannot be expected.
Parameters | |||
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Type | Name | Statistics | |
Input | Power Supply | Auxiliary Supply : 80 - 500 VAC, 50-60 Hz. | |
Voltage | Direct Voltage Input : 50-300V L-N & 50-500V L-L Burden : 0.5VA |
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Current | Secondary Current Input : 5A or 1A (Site Selectable) CT Ratio: Site Selectable Range of Reading : 5 - 9995A Burden : < 1.0VA Overload: 5A CT = 6A RMS Continuous 1A CT = 1.2A RMS Continuous |
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Output | Relay | Switching Voltage : Max. 230 VAC Switching Power: Max. 1000W Expected Mechanical life : >10 x 10^6 switching operations Expected Electrical life:>4 x 10^6 switching operations@(Load = 200VA, Cosφ=0.5) |
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MEASUREMENT | True RMSBasicParameters | Capacitor Current | CT Primary : Site Selectable Range of reading : 5 – 9995A Accuracy : 1.0% of Reading |
Power Factor | Accuracy : 1.0% of Reading (IPFI ≥ 0.5) | ||
MISC. | Dimensions | Bezel | 144 X 144 mm |
Panel Cutout | 138 X 138 mm | ||
Depth of installation | 55 mm | ||
Operating temp | 10°C to 50°C | ||
Weight | 0.560 Kg. (Approx.) | ||
Min. Operating Current | 5% of CT Primary in FIFO/SFIFO mode |