TENDER NO.
PGVCL/RJT/PROC/ HT-LT Stay & LT Shackle Insulators/735
Manufacturer's Name
and Address.
GUARANTEED TECHNICAL PARTICULARS
TECHNICAL INFORMATION AND GUARANTEED TECHNICAL
INFORMATION FOR SUPPLY OF PORCELAIN HT & LT GUY INSULATORS.
PART-'A'
Bidder has to confirm following important requirement.
SR.
PARTICULARS CONFIRMATION
NO.
HT LT
01 Type & Designation
a) HT Type C of Table-I of IS-5300/69 Fig-3. Yes --
b) LT Type B of Table-I of IS-5300/69 Fig-2. -- Yes
02 Overall Dimensions
HT LT
Length 140mm 110mm Yes Yes
Diameter 85mm 75mm Yes Yes
Cable hold 25mm 22mm Yes Yes
03 Minimum failing load
HT 88KN Yes --
LT 53 kN -- Yes
04 Colour of insulator.
HT Brown Yes --
LT White -- Yes
05 Tolerance of insulator. as per IS-5300/69 Yes Yes
(2nd reprint March-81)
06 Dry power frequency/withstand HT- 27 KV Yes --
LT -22 KV -- Yes
07 Wet power frequency withstand HT- 13 KV Yes --
LT- 9 kv -- Yes
08 Marking on insulator PGVCL, Name of manufacturer,
Year and Min. failing load. Yes Yes
09 Packing of insulator as per Clause No. 7.2 under
heading packing. Yes Yes
PART-'B'
BIDDER HAS TO FURNISH BELOW MENTION DETAILS ABOUT MATERIAL.
01. Type of firing the insulator.
02 Details of test conducted on raw materials.
03 Quality assurance plan which are being implemented.
Signature of Tenderer:
Date: Place:
Company’s Round Seal:
Page 1 of 6 GTP and Specification and Drawing of HT-LT Stay Insulators.doc
TENDER NO. PGVCL/RJT/PROC/ HT-LT Stay & LT Shackle Insulators/735
PART-'C':
ENCLOSURES
Bidder has to enclose following documents and has to confirm for the same.
Sr.No. Particulars Confirmation
2 Nos. (Two) of sample for HT & LT
1. Yes
Guy Insulators to be sent with tender.
Type test certificate covering all the
tests as per Cl. No. 6.2 of specification
2
under heading type test from Govt. Yes
approved laboratory.
3 List of Plant & Machinery Yes
4 List of Testing equipments Yes
List of orders pending/executed at
least for past two years for the items
offered
5
a) With GUVNL & subsidiary company Yes
b) With the purchases other than Yes
GUVNL & subsidiary company
PART-'D'
Bidder has to mention below deviation if any, quoting relevant clause of specification.
Signature & seal of Tenderer.
Signature of Tenderer:
Date: Place:
Company’s Round Seal:
Page 2 of 6 GTP and Specification and Drawing of HT-LT Stay Insulators.doc
TENDER NO. PGVCL/RJT/PROC/ HT-LT Stay & LT Shackle Insulators/735
SPECIFICATION FOR L.T/H.T GUY INSULATORS
1. SCOPE :-
This specification covers the details of the Guy (Strain) insulators Porcelain
White/Brown glazed insulators suitable for G.I.Stay Wire 7/3.15mm and to supply to
any Regional Store within the territory of Gujarat State.
2. APPLICABLE STANDARDS :-
IS-5300/1969 (Second Reprint March-1981) and its latest amendment if any.
3. GENERAL REQUIREMENT :-
3.1 The porcelain shall be sound and free from defects, thoroughly verified and
smoothly glazed.
3.2 The glazes, shall be (Brown colour for type 'C' of Table of IS-5300/69 Fig-3 and
'White' colour for type 'B' of Table of IS-5300/69 Fig.2, except the parts on
which the porcelain is supported during firing, which may please be left
unglazed, all other surfaces of the insulators shall be effectively glazed.
3.3. The design of the insulators shall be such that stresses due to expansion and
contraction in any part of the insulator shall not lead to deterioration.
3.4 The insulator shall be in one piece.
4. BASIC INSULATOR CHARACTERISTICS :-
The test voltage of the insulators shall be as per IS-5300/69 (Second reprint
March- 1981)
NOTE :- The withstand and flashover voltages are referred to the references
atmospheric conditions.
5. MECHANICAL FAILING LOAD :-
1. Type 'B' of Table-I
of IS-5300/69 Fig.2. 53 KN
2. Type 'C' of Table-I
of IS-5300/69 Fig.3. 88 KN
6. TESTS :-
The Insulator shall comply with the following routine, type and acceptance tests as
per IS : 5300 (Second revision Amendment No. 1 & 2).
6.1. Routine Test :-
Visual Examination
Signature of Tenderer:
Date: Place:
Company’s Round Seal:
Page 3 of 6 GTP and Specification and Drawing of HT-LT Stay Insulators.doc
TENDER NO. PGVCL/RJT/PROC/ HT-LT Stay & LT Shackle Insulators/735
6.2 Type Test :
The firm shall submit the type test report from Govt. approved laboratory
not more than five years old along with offer .The following type tests are to
be carried out on sample in the order mentioned bellow as per IS 5300/69.
a) Visual examination.
b) Verification of dimensions.
c) Dry one minute power frequency withstand test.
d) Wet one minute power frequency withstand test.
e) Temperature Cycle test.
f) Mechanical strength test
g) Porosity test.
NOTE :- The identification marks of firm provided on the insulator should
be invariably mentioned in the type test certificate.
6.3 Acceptance Tests :- (to be conducted in the following order)
a) Visual examination.
b) Verification of dimensions.
c) Temperature Cycle test.
d) Mechanical strength test.
e) Porosity test (Applicable only to HT Guy Insulator Type-C).
7. Marking :-
7.1 Each insulator shall be legibly and indelibly marked to show the following.
a) Name or Trade mark of manufacturer.
b) Year of manufacture.
c) PGVCL
d) Minimum failing load in KN.
7.2 Marking on porcelain shall be applied before firing.
Packing :-
Each Insulators should be wrapped with dry grass. This shall be then packed
in either polythene or double gunny bags. No.of insulator should not be more
than 50 Nos. per bag for type 'B' and 30 Nos. per bage for type 'C'.
Signature of Tenderer:
Date: Place:
Company’s Round Seal:
Page 4 of 6 GTP and Specification and Drawing of HT-LT Stay Insulators.doc
TENDER NO. PGVCL/RJT/PROC/ HT-LT Stay & LT Shackle Insulators/735
Signature of Tenderer:
Date: Place:
Company’s Round Seal:
Page 5 of 6 GTP and Specification and Drawing of HT-LT Stay Insulators.doc
TENDER NO. PGVCL/RJT/PROC/ HT-LT Stay & LT Shackle Insulators/735
Signature of Tenderer:
Date: Place:
Company’s Round Seal:
Page 6 of 6 GTP and Specification and Drawing of HT-LT Stay Insulators.doc
