Wednesday, March 4, 2009

TESTS-Instrumentation Cable

10.07.01 All types and sizes of cables being supplied shall be
Subjected to type tests, routine tests and acceptance
test as specified and according to relevant standards.

10.07.02 FLAMMABILITY TEST

Finished cable shall pass the flammability test as per IEEE-383. In addition it shall also pass flammability test as per Class F 3 of Swedish Standard SS-4241475 (1978). The cables in the installation can be of any (or all) of the various types specified. However in case of failure to pass this test, the whole lot shall be subjected to rejection. The Test shall be conducted on one sample of each lot of production only.

10.07.03 ROUTINE TEST

Routine tests shall be carried out for each drum of cables for all types and sizes. The following shall constitute routine as bare minimum.

a) Conductor Resistance Measurement.
b) Insulation Resistance Measurement.
c) High Voltage Test.

10.07.04 FACTORY ACCEPTANCE TEST

Acceptance test shall be carried out on each type and size of the instrumentation cables for acceptance of a lot. All tests except the following tests shall constitute acceptance tests as bare minimum. Items B-3,
4,5,6,7,8,9,11 & d(3) as mentioned in 10.07.05.

Further the following acceptance test shall also be
carried out -

1) Swedish chimney test as per SEN 4241475 and IEEE
383.
2) High voltage test(Water immersion test)AC & DC
test as per IS-5831.
3) Volume resistivity test(for sheath)as per IS-5831.
4) Check for markings and over all diameter of cables.
5) Cable length/ surface check.
6) Mutual capacitance test at 0.8 KHz.
7) Image Attenuation test.
8) Characteristic Impedance Test at 0.8 KHz.
9) Cross talk test at 0.8 KHz.
10) Visual verification of length & surface.
11) Emf Test for Thermocouple Extn. Wire(ANSI)

10.07.05 TYPE TEST

Type test shall be conducted on one sample of each type and size of cable and each lot of production.
However Type Test of PVC insulation, PVC sheath shall be conducted on one sample of each lot of production. The following shall constitute the type test to be conducted as minimum but not limited to :

For Conductor (including Drain Wire)
1. Resistance Test - IS-5831/ IS 1554/ IS- 10810 /VDE 0815
2. Diameter - IS 10810
3. Tin Coating Test - IS 10810(per sulphate test)
4. No. of Strands -
5. Size of each strands-
6. Twisting Lay -
7. Annealing Test - IS -10810

(B) For PVC Insulation PVC Sheath

1. Test for thickness dia, availability
as per spec./ approved data sheet
2. Tensile strength & elongation – IS 10810 /VDE472
Test before & after aging
3. Aging in air ovens - IS 10810 /VDE 0472
4. Loss of mass tests - IS 10810/VDE 0472
5. Hot Deformation test - IS 10810/VDE 0472
6. Heat shock test - IS 10810/VDE 0472
7. Shrinkage test - IS 10810 /VDE0472
8. Cold bend/cold impact test - IS 10810
9. Colour fastness to water - IS 10810
10. Thermal stability test - IS 10810
11. Bleeding & blooming - IS 10810
12. Oxygen index test(for outer - ASTMD-2863
sheath and fillers)
13. Smoke Density Test - ASTMD-2843
(for outer sheath and fillers)
14. Acid gas generation test -(IEC-754-1)
(for outer sheath and fillers)

(C) For AL-Mylar Shield (Individual & over screen)

1. Continuity Test as per relevant IS.
2. Shield Thickness measurement as per approved data sheet.
3. Shield coverage & Overlap as per spec./ approved data
sheet.
4. Noise Interference Test(IEEE)
5. No. of Strands in drain wire

(D) For Completed cables

1. Dimensional checks - IS-10810
2. Insulation Resistance - IS-10810
3. High Voltage test - IS-10810
(dielectric strength and
resistance to direct current)

4. Flammability test - IEEE-383, SS4241475

5. Drain wire continuity test – As per relevant standard

6. Mutual Capacitance - VDE -0472
(Wherever applicable)
7. Cross talk - IS-10810

8. Noise Interference Test –
E) Test on armoured wire – (IS-3975)


10.07.06 For these tests, the selection of cable drums shall be at random, as per the following sampling plan.

------------------------------------------------------
S.No. No.of Drums in the Lot No. of Drums to be
Taken as sample
-------------------------------------------------------
1. Up to 50 2
2. 51 to 100 5
3. 101 to 300 13
4. 301 to 500 20
5. 501 & above 32
10.07.07 The manufacturer claims that certain tests could not be
performed due to the lack of measuring equipment or any other
reason, the purchaser has right to reject the produced cables.
10.07.08 Factory acceptance test shall be witness by owner.
10.07.09 The bidder shall submit type test, routine test, & factory acceptance test to owner for review and approval.

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1 comment:

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