II. Transformers:
7. General condition of the installations:
Rule of the Indian Electricity Rules, 1956 |
Requirement |
Report |
1 |
2 |
3 |
3. (i) Is the list of authorised persons properly made and kept upto date duly attested? |
(ii) Whether the authorised persons are competent for the work assigned to them? |
29. (i) Is/are there any sign(s) of over-loading in respect of any apparatus? |
(ii) State if any unauthorised temporary installation exists. |
(iii) Whether the H.V motors and controlling equipment are being over hauled periodically and record kept of the same in a register? |
(iv) Whether the transformer oil samples are being tested periodically and results recorded in a register? |
(v) Whether suitable lightning arrestors have been provided near the transformers for protection against lightning? |
(vi) Whether earth resistance is being measured periodically and results recorded in a register? |
(vii) Any other defect or condition which may be source of danger. |
(viii) Any other general remarks. |
30. Service line and apparatus of the supplier on consumer’s premises:
Give report on the condition of service lines, cables, wires, circuit breaker, isolating switches, protective recording and integrating apparatus and such other fittings placed by the supplier/owner on the premises. |
31. Has the supplier provided suitable cut-outs, within consumer’s premises, in an accessible position? Are they within an adequately enclosed fire proof receptacle? |
33. (i) State if earth terminal is provided by the supplier. |
(ii) Is the consumer’s separate earth efficient? (State the earth resistance, if measured). |
(iii) Report on the efficiency of the earthing arrangement. |
34. (i) Are bare conductors (if any) in building inaccessible? |
(ii) Whether readily accessible switches have been provided for rendering them dead? |
(iii) Whether any other safety measures are considered necessary? |
35. State if “Danger Notices” in Hindi and the local language of the district and of the type approved by the Electrical Inspector are affixed permanently in conspicuous position as per this rule. |
36. Whether the practice of working on live lines and apparatus is adopted? If so, have the safety measure been approved by the Electrical Inspector? |
41. State if the circuits or apparatus intended for operating at different voltage (s) are distinguishable by means of indications) of permanent nature. |
42. Whether all circuits and apparatus are so arranged that there is no danger of any part(s) becoming accidentally charged to any voltage beyond the limits of voltage for which it/they is/fire intended? |
43. (i) In the case of generating and enclosed stations have fire-buckets, filled with clean dry sand, been conspicuously marked and kept in convenient situations in addition to fire-extinguishers suitable for dealing with electric fires?
(ii) State if First Aid Boxes or Cupboards conspicuously marked and properly equipped are provided and maintained.
(iii)Is some staff trained in First Aid Treatment? |
44. (i) State if instructions in 1[English or Hindi and the local language of the district and where Hindi is the local language, in English and Hindi,] for the restoration of persons suffering from electric shock have been affixed in a conspicuous place. |
(ii) Are the authorised persons able to apply instructions for resuscitation of persons suffering from electric shock? |
49. Leakage on premises:
State insulation resistance between conductors and earth in Megaohms. |
50. (i) Whether a suitable linked switch/circuit breaker is placed near the point of commencement of supply so as to be readily accessible and capable of being easily operated to completely isolate the supply? |
(ii) Is there a suitable linked switch or a circuit breaker to carry and break the full load current on the secondary side of a transformer? |
(iii) Whether every distinct circuit is protected against excess energy by means of a suitable circuit breaker or cut-outs? |
(iv) State if a suitable linked switch or circuit breaker is provided near the High Voltage motor or other apparatus for controlling supply to the motor or apparatus. |
(v) State if adequate precautions are taken to ensure that no live parts are so exposed as to cause danger. |
51. (i) State the condition of metallic coverings provided for various conductors. |
(iii) (a) State whether clear space of 90 cm is provided in front of the main switch-board. |
(b) State whether the space behind the switch-board exceeds 75 cm. in width or is less than 23 cm. |
(c) In case the clear space behind the switch-board exceeds 75 cm state whether a passage way from either end of the switch board to a height of 1.80 meters is provided. |
64. (i) State if all conductors and apparatus including live parts thereof are inaccessible. |
(ii) State if all windings of motors or other apparatus are suitably protected. |
(iii) State the method adopted to guard lower voltage circuits in transformers becoming accidentally charged above its/their normal voltage. |
(iv) State in case of transformers or switches or static condensers involving the use of more than 2,275 litres of oil in one chamber, if suitable oil soak pits are provided. |
(v) Where 9,000 litres or more of oil is used in any one oil tank, has provision been made for draining away or removal of oil which may leak or escape from such tank(s)? |
(vi) State if trenches inside sub-station containing cables are filled with non-inflammable material or completely covered with non-inflammable slabs. |
(vii) Are conductors and apparatus so arranged that they may be made dead in sections for carrying out work thereon? |
66. In case of metal sheathed electric supply lines, are the metal sheaths connected with earth properly? |
67. (i) Have the frame of every generator, stationary motor, and so far as
practicable portable motor and metallic parts not intended as conductors
of all transformers and an other apparatus used for regulating or controlling energy and all high voltage energy consuming apparatus been earthed by two separate and distinct connections with earth? |
(ii) Is the earth-wire free from any mechanical damage? |
(iii) Have two separate and distinct connections with earth, each having its own electrode, been provided for the earth neutral point? |
(iv) Have the metal casings or’ metallic coverings containing or protecting any electric supply line or apparatus been properly earthed and so joined and connected across all junctions boxes as to make good mechanical and electrical connections throughout their whole length? |
68. Is the outdoor (except poletype) sub-station efficiently protected by fencing not less than [1.8]2 metres in height? |
69. (i) Where platform type construction is used for pole type substation, has sufficient space for a man to stand on the platform been provided? |
(ii) Has hand-rail been provided and connected with earth (if metallic and if sub-station has not been erected on wooden supports)? |
70. Has suitable provision been made for immediate and automatic discharge of every static condenser on disconnection of supply?
Overhead lines: |
74. What is the minimum size of the conductors of overhead lines used? State the type of conductors. |
77. Are clearances above ground of the lowest conductor of overhead lines, including services lines, as per this rule? |
80. (i) On the basis of maximum sag, are verticle clearances where the high or extra-high voltage line passes above or adjacent to any building or part of a building as per this rule? |
(ii) On the basis of maximum deflection due to wind pressure, are horizontal clearances between the nearest conductor and any part of such building as per this rule? |
81. Where conductors forming parts of system at different voltages are erected on the same supports, has adequate provision been made to guard against danger to linemen and others from the lower voltage system being charged above its normal working voltage by leakage from or contact with the higher voltage system? |
87. Where overhead lines cross or are in proximity to each other have they been suitably protected to guard against possibility of their coming in contact with each other. |
88. (i) Has every guard wire, been properly earthed at each point at which its electrical continuity is broken? |
(ii) What is the type and size of guard wire? |
90.(i) Are the metal supports of overhead lines and metallic fittings attached thereto permanently and efficiently earthed? |
(ii) Has each stay-wire (except in case where an insulator has been placed in it at a height not less than 3 metres from the ground) been similarly earthed? |
91. (i) Has the overhead line been suitably protected with a device for rendering the line electrically ]Harmless in case it breaks? Whit type of device is used? |
(ii) Whether anticlimbing devices have been provided for each of the high voltage and extra high voltage supports? |
92. (i) Has the owner of overhead lines adopted efficient means for diverting to earth any electrical surges due to lightning in every overhead line which is so exposed as to be liable to injury from lightning? What type of means are used? |
(ii) Has earthing lead from the lightning arrestors been connected to a separate earth electrode? |
93. Are unused overhead lines being maintained in a safe mechanical condition? |
Any other remarks.
Dated:…….. Inspecting Officer’s Signiture…………
Name…………
Designation…………..
File No………….. |
