supply cable for RTD monitor, control cable from marshalling box to HT panel shall be connected in their respective cable boxes. All the cables will be meggered after laying but before final connection. All LT power and control cables shall be supplied by OIL.
The transformer will be energised in the presence of OIL's engineer after clearance
The transformer output voltage will be checked for proper value and balancing. Tap
switch to be adjusted if required.
The transformer will be kept energised and observed for any abnormal heating, noise,
vibration for next 72 hrs.
After successful operation with power ON for 72hrs the transformer will be technically
acceptable to OIL.
After completion of commissioning of one transformer the second transformer shall
have to be commissioned by the party by following all the above instructions.
Party shall have to carry out all pre-commissioning tests like IR values, functioning of
RTD and winding temperature, no load test, load test, parallel operation of the transformers etc. with expert from manufacturer in presence of OIL's Engineer. All necessary precautions
shall have to be followed for parallel operation the transformers.
GENERAL NOTES FOR INSTALLATION, TESTING AND COMMISSIONING.
Party should submit an undertaking with their offer confirming compliance to all point
mentioned in the headings A,B,C of this annexure.
All works of installation shall be carried out in complete with latest IS, IE rules and
National Electric Code.
All works of installation, testing and commissioning shall be performed by persons
having valid electrical license under the direct supervision of a competent service personnel of the party having a minimum experience of at least 5 years in installation and commissioning of HT transformers and possessing appropriate licence valid for operating in
Copy of license of all the persons engaged for installation and commissioning work
has to be submitted to OIL for approval before start of work.
All tests/ checks shall be done in presence of OIL's Engineer-in- Charge or his
The supplier should obtain the permit to work from Engineer - in- Charge of respective
Installation Managers before taking up work, if any.
The party shall be responsible for safe custody and proper storage of materials till
All tools and instruments and equipment required for installation, testing and
commissioning shall be arranged/ provided by the party.
All safety and local/government regulations shall be followed during installation,
testing and commissioning. Party shall be responsible for compliance to such regulations on
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