GENERAL DATA & INFORMATION Bay No. Bay Name Relay designation LINE DIFF. No. 0411L1x6x1C7CCxH5C424xx Make S. No. Rated Current 1A Rated Voltage 66.4 V L-N AC Frequency 50/60 HZ Logic inputs 125VDC Aux. Voltage 125/250V AC/DC Comm. Interface IEEEC37.94, Comm. Interface IEEEC37.94, CH-X 850nm Fiber CH-Y 850nm Fiber MECHANICAL CHECKS AND VISUAL INSPECTION Sl.no General checks Status 1. Inspect for no physical damage. 2. Verify the wiring connection as per approved drawing. 3. case connected to a local earth bar. 4. Power up the relay circuit and check relay is healthy. 5. Set the relay internal clock. 6. Send the relay setting configuration file to relay through Port F. WATCHDOG CHECK: Check status of watchdog contacts as below. Contact Status OUTPUT Remarks Relay De- energized Energized C28-C29 CLOSE OPEN DC BURDEN CHECK: V Aux I Measured Relay Status Expected Watts Calculated Watts Applied(V) (mA) Enabled 125 <25W Enabled & 125 <25W Trip
GENERAL DATA & INFORMATION Bay No. Bay Name Relay designation LINE DIFF. No. 0411L1x6x1C7CCxH5C424xx Make S. No. Rated Current 1A Rated Voltage 66.4 V L-N AC Frequency 50/60 HZ Logic inputs 125VDC Aux. Voltage 125/250V AC/DC Comm. Interface CH-X IEEEC37.94, 850nm Fiber Comm. Interface CH-Y IEEEC37.94, 850nm Fiber MECHANICAL CHECKS AND VISUAL INSPECTION Sl.no General checks Status 1. Inspect for no physical damage. 2. Verify the wiring connection as per approved drawing. 3. case connected to a local earth bar. 4. Power up the relay circuit and check relay is healthy. 5. Set the relay internal clock. 6. Send the relay setting configuration file to relay through Port F. WATCHDOG CHECK: Check status of watchdog contacts as below. OUTPUT Contact Status Remarks Relay De- energized Energized C28-C29 CLOSE OPEN DC BURDEN CHECK: Relay Status V Aux Applied(V) I Measured (mA) Expected Watts Calculated Watts Enabled 125 <25W Enabled & Trip 125 <25W
sel-411l_-_line_differential.docx