LV Panel Logbook

An LV Panel Logbook is used to record operating data, inspections, and maintenance activities for low-voltage distribution panels. It helps ensure reliability, safety, and compliance while providing a history for troubleshooting and audits.

Sections of LV Panel Logbook

1. General Information

1. Panel ID/Code: __________
2. Location: __________
3. Voltage Rating: __________ (e.g., 415 V)
4. Current Rating: __________
5. Manufacturer: __________
6. Serial Number: __________
7. Year of Commissioning: __________
8. Type (MCC, DB, SMDB, etc.): __________

2. Daily/Shift Operational Record

Date	Time	Voltage (V)	Current (A)	Frequency (Hz)	Load (kW)	Power Factor	Remarks

3. Maintenance Record

Date	Activity Performed	Parameters Checked	Results/Readings	Performed By	Remarks
15-08-2025	Cleaned panel interior	Dust & debris	Clean	Technician A	OK
16-08-2025	Checked cable terminations	Tightness	Normal	Technician B	Tightened busbar bolts

4. Testing Record

Date	Test Type	Standard Used	Measured Value	Acceptable Value	Remarks
12-07-2025	Insulation Resistance (IR)	IEC 60364	200 MΩ	> 100 MΩ	Pass
14-07-2025	Earth continuity test	IEC 61439	0.2 Ω	< 0.5 Ω	Pass

5. Fault/Abnormality Record

Date	Type of Fault/Abnormality	Symptoms	Action Taken	Restored By	Remarks
20-07-2025	Overheating busbar	High temperature	Load redistributed	Technician A	Thermography required

6. Spare Parts & Consumables Record

Date	Item	Quantity	Issued By	Used For	Balance Stock

7. Inspection Checklist (Weekly/Monthly/Yearly)

1. Cleanliness inside/outside panel
2. Door locks & hinges in good condition
3. Indicators and meters functioning
4. Busbar tightness checked
5. Protection relays tested
6. Cable terminations intact
7. Earthing verified
8. Thermographic inspection done

Importance of LV Panel Logbook

1. Ensures smooth operation of LV distribution system.
2. Helps identify potential faults early.
3. Maintains safety compliance.
4. Provides maintenance and test history.
5. Useful for audits, inspections, and troubleshooting.