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Abstract of IE Rules for DP Structure

IER-61-2.

Only one connection with earth has been provided for the frame of A B switch. Onemore Separate and Distinct connection with earth should be provided for frame ofthe A B switch.

IER-61-2. Only one connection with earth has been providing for the frame of the H G fuse.One more Separate and distinct connection with earth should be provided for theframe of HG fuse.

IER -29&5b The metal cover of the transformer (top cover) on which the HV and or LV busingare Housed should be Looped to earth to avoid any fault current passing throughfastening bolts

IE R-9 2. The earthling lead of the HV lighting arrester is not kept separate but it mixed withother Connections. The earthling lead from the HV lighting arrester should not beused for earthling Any other gear and should be taken to a separate electrodes

IER-51-1 b & 61 -3The GI pipe enclosing the MV circuits on the secondary side of the transformer areNot earthed. This should be earthed.

IER- 29&9 2The earth lead from the HV lighting arrestor is taken through GI pipe. The aboveearth lead Should not Pass through any iron steel pipes.

IER 29&51bThe AB switch handle has not been earthed. The same should be earthedeffectively.

IER-29

Masonry through are not provided for the earth electrodes. Masonry through should

be Provided for the Earth electrodes

IER -29No name board has been provided for the substation. A name board with allparticulars Should be providing.

IER 50 1 b.

There is no fuse control on the secondary side of the transformer but only theoutgoing Feeders are provided with fuse control. Porcelain fuse unit of adequatecapacity should be Provided for the transformer on the secondary side and only fromthese fuse unit supply to the outgoing feeders should be tapped

IE R-29The handle of the AB switch has been fixed at a height of about 4-5 feets for easyoperation.

IER 29The UN supported length of jumper in the transformer structure is more than5 feet.The same Should be restricted to a length of 5feet

IER 51 1a & bAll the open wiring on the secondary side of the transformer should be closed inconduits.

IER 29

The secondary control of porcelain fuse carrier is not housed in distribution box.They should Be housed in the distribution box No breather has been provided for thetransformer a breather should be provided for the transformer.

IER 29Some of the fuse units are broken. The broken fuse units should be replaced byfresh unit

IER 51 1a & b

The feeders emanating from the secondary fuse control are not provided withseparate fuse Unit individually. Further one feeder is tapped from another. Thereshould not be any tapping In the feeder and the entire emanating feeder should beprovided with fuse units individually

IER 51 -1bThe providing pipe of the AB switch has not been earthed. The same should beearthed Effectively.

IER 91

Earthed called guarding has not been provided at the place where the HV/MV lines

are Crossing the road. Suitable earthed cradle guarding should be provided for theroad crossing.

IER 29

The metal parts of the DP structure distribution box have rusted badly and requiresRepainting. Repainting should be carried out to the above structure and should bemaintained Properly

IER 29

All the routine maintenance work on the transformer like testing of transformer oil etcshould Be periodically and the result obtained should be recorded up to date in aseparate register

IER 29 & 61 bThe earth electrodes provided should be tested periodically for satisfactory resultsand Results obtained should be recorded up to date in a separated register

IER 29.The HV jumpers connected on the tension side are to be connected to the slack sideor U Loop connection on the line

IER 29No HV /LA (Lighting arrester) is provided for the protection of the transformer which

should Be provided

IER 51 -1b

The metallic fittings of the insulators, strain dishes are to be looped to earth leads ofStructure

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IER 29Bushes are not provided for the ends of conduit pipes enclosing MV wires on thesecondary Sides. Bushes are to be provides for the ends of conduit pipes

IER 29The insulated wires on the secondary side of the transformer are deteriorated andthey Should be replaced by healthy wire

IER 35Danger notices have been provided the transformer section. Danger notice is to beprovided For the transformer section.

IER 29 Oil leak in the LV bushing of the transformer should be attended

IER 29The position of the HV/LV is to be shifted to the other side so that the clearancebetween The live jumper and earthed metal parts should not less than12 inches

IER 29 The transformer base channel from ground is less than 7 feet and the clearance toHV live Point from ground is less than 12 feet. The above clearances are to beprovided.

IER 61-1aThe transformer neutral is provided with only one earthy. The neutral should beprovided With one more earth connection

IER 61-1aThe transformer neutral earth lead is looped with body. The neutral earth leadsshould be Separated from the transformer body

IER 61 -2The transformer body is earthed with signal earth connection. The transformer bodyshould Be provided with two separate and distinct earth locations