This standard covers danger notice plates to be
displayed in accordance with Rule No. 35 of the Indian Electricity Rules, 1956.
Dimensions
For the purposes of this standard, two sizes of danger
notice plates are recommended as below:
For display at medium voltage installations 200 × 150 mm (see Fig. 1)
For high and extra high voltage installations 250 × 200 mm (see Fig. 2)
All letterings shall be centrally spaced. The
dimensions of the letters, figures and their respective positions shall be as
given in Fig. 1 and Fig. 2 for medium voltage and high and extra high voltage
installations respectively. The size of each letter in the word in each
language, and the spacing between them for the purposes of scribing shall be so
chosen that they are uniformly written in the space earmarked for them.
The corners of the plate shall be rounded off.
The location of the fixing holes shall be left to the
choice of the user.
Material and Finish
The plate shall be made from mild steel, at least 1·6
mm thick and vitreous enamelled white, with letters, figures and the
conventional skull and cross-bones in signal red colour [see IS : 5-1978†] on
the front side. The rear side of the plate shall also be enamelled.
*Rules for rounding off numerical values (revised).
†Colours for ready mixed paints and enamels (third
revision).
Fig.
1 Danger Notice Plate for Medium Voltage Installation
Languages
- Hindi—The word recommended to denote danger in Hindi and the type of lettering are indicated in the specimen danger notice plates shown in Fig. 1 and 2.
- English—For denoting in English, the type of lettering recommended is shown in Fig. 3.
- Other District Languages—The recommended equivalents to danger in some regional languages are given in Appendix B.
Fig.
2 Danger Notice Plate for High and Entry High Voltion Instalition
Fig.
3 Danger Notice Plate for Medium Voltage Installation
MARKING
- The essential information that would be necessary to identify the manufacturer of the danger notice plates shall be marked, in such a manner and position on the plates that it does not interfere with the other information.
- The danger notice plates may also be marked with the ISI Certification Mark.
Note—The use of the ISI
Certification Mark is governed by the provisions of the Indian Standards
Institution (Certification Marks) Act and the Rules and Regulations made
thereunder. The ISI Mark on products covered by an Indian Standard conveys the
assurance that they have been produced to comply with the requirements of that
standard under a well-defined system of inspection, testing and quality control
which is devised and supervised by ISI and operated by the producer. ISI marked
products are also continuously checked by ISI for conformity to that standard
as a further safeguard. Details of conditions under which a licence for the use
of the ISI Certification Mark may be granted to manufacturers or processors,
may be obtained from the Indian Standards Institution.
TESTS
General
- In order to ensure that the notice plates conform to this specification, the following essential tests are specified. The number of samples to be tested shall be as agreed to between the supplier and the user.
- The following shall constitute the tests (1) Visual examination, (2) Dimensional check, and (3) Test for wheather-proofness.
- Visual Examination—The samples of notice plates shall be examined visually for conformity to the various requirements of this standard in respect of the works and letters used, their relative position and size. The colour of the paint used shall be visually compared with the signal red colour specified in IS : 5-1978*.
- Dimensional Check—The dimensions of the plate, its thickness and the size of lettering, figures, etc, shall be checked for conformity to Fig. 1 or Fig. 2 as applicable. All letterings shall be centrally spaced and shall conform generally to the stipulations in 2.1.2 to 2.1.4.
- Test for Weather-Proofness—For the purpose of verifying colour retention of the vitreous enamel coatings, the method of test specified in IS : 8709-1977† shall apply.
APPENDIX A
EXTRACT FROM INDIAN
ELECTRICITY RULES, 1956
(Clause 0.2)
Rules 35 Danger
Notices—The owner of every medium, high and extra high voltage installation
shall affix permanently in a conspicuous position a danger notice in Hindi or
English and the local languages of the district, with a sign of skull and bones
and of a type approved by the Inspector on:
every motor, generator,
transformer and other elecrical plant and equipment together with apparatus
used for controlling or regulating the same.
*Colours for ready mixed
paints and enamels (third revision).
†Method of tests for
colour retention of vitreous enamel coatings. 8
all supports of high and
extra high voltage overhead lines which can be easily climbed upon without the
aid of ladder or special appliances.
Explanation—rails, tubular
poles, wooden supports, reinforced cement concrete poles without steps.
I-sections and channels, shall be deemed as supports which cannot be easily
climbed upon for the purposes of this clause.
Luminous tube sign
requiring high voltage supply, X-ray and similar high-frequency installations.
Provided that where it is
not possible to affix notices on any generator, motor, transformer or other
apparatus, they shall be affixed as near as possible thereto; or the word
danger and the voltage of the apparatus concerned shall be permanently painted
on it.
Provided further that
where the generator, motor, transformer or other apparatus is within an
enclosure, one notice affixed to the said enclosure shall be sufficient for the
purpose of this rule.
APPENDIX B
RECOMMENDED EQUIVALENTS TO
‘DANGER’ IN SOME REGIONAL LANGUAGES
Sl No
|
Language
|
Equivalent to the
word ‘Danger’
|
1
|
Punjabi
|
ਖ਼ਤਰਾ
|
2
|
Urdu
|
خطرہ
|
3
|
Marathi
|
धोक्यात
|
4
|
Tamil
|
அபாயம்
|
5
|
Malayalam
|
അപായം
|
6
|
Bengali
|
বিপদ
|
7
|
Oriya
|
ବିପଦ
|