FORM- D

APPLICATION FOR APPROVAL TO ENERGISE HV, EHV SUB-STATION/ EQUIPMENTS

(Under rule 63 of the Indian Electricity rules 1956 (33 KV and above)

1. Name of Division ______2. Name of S/ Division ______

3. Name of S/Division ______Capacity ______Voltage Ratio______

4. Inspection fee Rs. ______Challan No. ______Date ______

5. Date of application ______6. Proposed date of anergisation ______

  1. Schematic diagram of the installation (to be attached).
  1. Name plate particulars of each MV / HV / EHV equipment at the generating power / control /

sub-station to be attached.

Installation results

9. Installation resistance between:-

  1. HT/ LT ______
  2. HT / earth ______
  3. LT / earth ______

10. Size of conductor used for earthing ______

  1. Earth resistance ______

Individual electrodes ______Combined ______

1)Pit No. 1. ______

2)Pit No. 2. ______

3)Pit No. 3. ______

4)Pit No. 4. ______

5)Pit No. 5. ______

12. Transformer oil installation test result ______

13. Any other relevant information ______

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14. General condition of the installations (as detailed below)

Rule No. of I.E Rules, 1956 / Description / Report of the XEN / Observation of Inspecting Officer
1 / 2 / 3 / 4
3. (i)
(ii)
34. (i)
(ii)
(iii)
35.
41.
42.
43. (i)
(ii) / Is the list of authorised persons properly made and kept up to date duly attested?
Whether the authorised persons are competent for work assigned to them?
Are bare conductors (if any) in the building inaccessible?
Whether readily accessible switches have been provided for rendering them dead?
Whether any other safety measures are considered necessary?
Whether the “Danger Notices” are affixed permanently in conspicuous position as per this rule?
Whether the circuits or apparatus intended for operation at different voltages are distinguishable by means of indication of permanent nature?
Whether all circuits or apparatus are so arranged that there is no danger of any part becoming accidentally charged to any voltage beyond the limits of voltage for which it they/ is/ are intended ?
In the case of generating and enclosed stations have fire buckets filled with clean dry sand been conspicuously marked and kept in convenient location in addition to fire extinguishers suitable for dealing with electric fires?
Whether first aid boxes or cup-boards conspicuously marked and properly equipped are provided and maintained?

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1 / 2 / 3 / 4
(iii)
44. (i)
(ii)
51. (i)
(ii)
64. (i)
(ii) / Is some staff trained in first aid treatment?
Whether instructions in English and Hindi for the restoration of persons suffering from electric shock have been affixed in a conspicuous place?
Are the authorised persons able to apply instructions for resuscitation of persons suffering from electric shock?
State the condition of metallic coverings provided for various conductors.
a)Whether clear space of 90 cm. is provided in front of the main Switch Board?
b)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. whether passage way from either end of the switch board to a height of 1.90 meters is provided?
Whether all conductors and apparatus including live parts thereof are inaccessible?
Whether minimum clearance form any point on or about the permanent equipment where a man may be required to stand (measured form the position of feet) is as pear rule, as under.
a)Clearances to the nearest unscreened live conductor in air (section clearance) 2.6 Mts. For 11 KV.
2.8Mts. for 22 KV/ 33 KV.
3.0 Mts. for 66 KV.
4.0 Mts. for 220 KV.
6.5 Mts. for 400 KV.

Continued -4-

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1 / 2 / 3 / 4
(iii)
(iv)
64. (c) (i)
(ii)
(iii) / b)Is the ground clearance for bare conductors or live parts of any apparatus in the out door sub-station commensurate with the rules i.e.
2.7 Mts. for 11 KV.
3.7 Mts. for 22 KV/ 33 KV.
4.0 Mts. for 66 KV.
4.6 Mts. for 132 KV.
5.5 Mts. for 220 KV.
8.0 Mts. for 400 KV.
Whether all winding of motors or other apparatus are suitably protected?
State the method adopted to guard lower voltage circuit in transformer s becoming accidentally charged above its/ their normal voltage.
Where a switch station or sub-station with apparatus having more than 2000 liters of oil is installed, (whether indoors or outdoors) have baffle walls been provided between the apparatus.
a)Single phase banks in switch yards and generating stations and sub-station.
b)On the consumers premises ?
c)Where adequate clearance between the units is not available.
In case of transformers or switches or static condensers then 2000 liters of oil in chamber, are suitable oil soak pits provided?
Where 9000 liters or more of oil is used in any one oil tank receptacle or chamber, have provisions been made for oil which may leak or escape from such tank (s) ?

Continued -5-

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1 / 2 / 3 / 4
(iv)
(v)
64. A (d)
65. (i)
66.
67. (i)
(ii)
(iii) / Whether the trenches inside sub-station containing cables are filled with non-inflammable material or completely covered with non-inflammable slabs?
Are conductors and apparatus so arranged that they may be made dead in sections for carrying out work thereon?
When two or more transformers are operated in parallel the system shall be so arranged as to trip the secondary breakerof a Transformer in case the primary breaker of the transformer trips. Has such arrangement been made ?
Whether the new high or extra high voltage cable has withstood in the manufacturer’s works, the tests specified in that behalf in the appropriate specifications of Indian Standards Institution or its absence, technical commission?
In case of metal sheathed electric supply lines are the metal sheaths connected with earthproperly?
Has the frame of every generator stationery motor, and so far as practicable portable motors any metallic parts (not intended as conductors) of all transformers and any other apparatus used for regulating or controlling energy and all high voltage energy consuming apparatus been earthed by two separate distinct earth connection with earth?
Is the earth wire free from any mechanical damage?
Have two separate and distinct connections with earth, each having its own electrode been provided for the neutral points? (Separate earth electrodes are not necessary where an earthing metal has been used).

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1 / 2 / 3 / 4
(iv)
68.
70.
92. (i)
(ii)
(iii)
(iv)
(v) / Have the metal casings or metallic covering containing or protecting any electric supply lines or apparatus been properly earthed and so joined and connected across and all to and electrical connection throughout their whole length?
Is the out door substation, efficiently protected by fencing not less than 1.8 mts. In height?
Has suitable provision been made for immediate and automatic discharge of every static condenser on disconnection of supply?
Have individual earth electrodes been provided for each stating type lightning arrestors? Have these electrodes been connected to the main earth system?
Whether lightning arrestors are provided near the transformer for protection against lightning?
Whether transformer oil results taken and result recorded in a register?
Whether earth resistance measured and results recorded in a register?
Any other defect or condition which may be a source or danger?
General observations:

Executive EngineerSignature of Inspecting Officer,

______Designation ______

Division, HPSEB, ______

______Date of Inspection.

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