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Check List for High Voltage Switchgear LT Panel

Er. Parbhakar Dwivedi
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Check List for High Voltage Switchgear LT Panel Document Ref. No. 2.2
Contractor: Client:
Project: Location:
Supplier/Vendor:
Reference Drawing no:
Check List (Please tick mark in appropriate column)
Check Points Observations
Contactor/ Vendor Client
Ensure that panel is lowered down slung by lifting hooks Only from truck and placed on hard level surface or jacked rollers.
Ensure that while shifting the Panel to location is inched only on rollers, not tilted upside down etc.
Ensure all Panel doors are closed & locked
Check for any physical damages externally & internally
Check the following in relation to specification:
General Construction
Incomer & outgoing cable entry / exit location
Instruments & Indicator lamps
Internal wiring
Bus Bar Material
Bus Bar Mounting arrangement
Bus Bar Section
Bus Bar Spacing
Bus Bar Insulation - Heat Shrinkable sleeves
Phase sequence and polarity indication
Shrouding of live accessible parts
Check that the following are provided as per approved data sheets / drawings:
ACBs
Protective devices
SFUs
Spare cubicles for future space requirements
Current Transformers
Check that all cubicles have name tags
L.T. Breakers
Check ‘ON’ ‘OFF’ indication
Check if breaker cannot be plugged in unless it is ‘OFF’
Check if breaker cannot be removed when breaker is ‘ON’
Check if access to bus bar is prevented by automatic shutters when breaker is removed
Operation of circuit breaker shall not be possible unless it is:
Fully in service position
Or, withdrawn to test position
Or, fully drawn out
It shall not be possible to close electrically in service position, without completing the auxiliary circuit between fixed and moving portion
Ensure breaker carriage is earthed before the circuit breakers controls are plugged in the stationary contacts (i.e. before control circuit is completed)
Check for smooth withdrawal and insertion of breaker cradle and jerk free operation
Check Bus bar connection with respect to:
Material
Cross Section
Phase to phase & Phase to earth clearance
Check for proper ventilation
Check Earthing and that all gaskets are intact
Check operation of all moving parts for proper lubrication
Check inter lock function
Check that enough spacing is provided between cable end Terminations
Insulation test check
Check for ease of maintenance
Check that all maintenance tools / kit and spares have been Supplied
Check for the following Safety provisions:
Insulation mats
First Aid charts
First box
Danger Boards
Fire extinguishers
Portable CO2 (IS 2878-1976)
Dry chemical (IS 2171-1976)
Foam type fire extinguisher (for Transformer room)
Fire buckets (IS 2546-1974)
Standard Tool box
Caution boards (for use such as ‘man online’ ‘don’t switch on’ etc.)
Key Board (Tagged castel keys and all other keys of sub- station and allied area)
General remarks, if any

 

 

 

Checked by:____________________________ (Site Engineer) Signature:

Date :

Review and approval by: CM/ PM

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