REVISED SPECIFICATION TENDER SPECIFICATION No.:

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6. SUBMISSION OF OFFERS 6.1 In case of offers from other than the original equipment manufacturer (OEM), documentary evidence shall be submitted to prove that he is authorized to offer the item on behalf of OEM. The suppliers are also liable to produce the original invoice from OEM if warranted later. 7. TESTS (As per IEC-571) Nature of test Type test Routine test Vibration and shock test √ Performance test √ Dielectric voltage withstand test √ √ 8. TYPE TEST: VIBRATION AND SHOCK TEST: The test sample along with its mounting arrangement shall be subjected to the vibration and shock tests as given below. 8.1 The supplier shall make available one loco set of material as prototype for inspection and tests at his works and advise the Dy.Chief Electrical Engineer, Chittaranjan as and when such sample is ready. 8.2 The prototype testing facilities must be arranged by the supplier at his own cost. Tests shall be carried out as per relevant IEC standard mentioned above. The renderer shall clearly indicate in the offer, his preparedness for carrying out the prototype tests and adequacy of facilities to carry out the type /routine test at his premises / on any govt. approved lab. 8.3 VIBRATION: The equipment shall be mounted in machine room of electric locomotive and should be capable to withstand vibration for traction duty as per IEC 61373 The sample with mounting arrangement should be subjected to sinusoidal vibration, the frequency of which is to be varied progressively between 1 Hz and 100 Hz and amplitude (in mm) as per: A=25/f for f between 1Hz and 10 Hz A=250/f² for f between 10Hz and 100 Hz The duration will be 10 min. Possibility of resonance is to be detected in this duration.
If resonance is found then the sample should be subjected to sustained vibration, at the resonance or critical frequency for duration of 15 minutes along each of the three orthogonal axes. (DIN-EN60068-2-6/ IEC 60068-2-27/ IEC 60068-2-32 or equivalent) However, if resonance is not found then the sustained vibration should be performed at 10 Hz frequency. In both cases the amplitude should be as per the above formula. 8.4 SHOCK: For 18 mili seconds on each of its axis; the sensor is subjected to 50Hz vibration of such nature that max. acceleration is equal to 295 m/s² (30g) The results of the above two tests is satisfactory if there is no resulting damage or abnormality in operation. After the test, the sample is should be subjected to performance test (routine) and dielectric test. PERFORMANCE TEST: The pressure sensor output signal of 4-20mA should be checked for calibration (max. 1.5% of full scale) by imparting 0-4bar pressure at its port. Note down the zero offset (Obar pressure 4mA output signal) and the accuracy at full-scale reading (4bar pressure 20mA output signal). DIELECTRIC VOLTAGE WITHSTANDS TEST: The test voltage at normal frequency of 50 Hz and should be as nearly as possible sinusoidal. All the cable leads of the sensor are shorted and a voltage of 500VAC is applied between that shorted cable ends and the body of the sensor for 60 seconds. There should not be any flash over or breakdown. 9.0 ROUTINE TEST The offered material shall be as per approval model by CLW.The following test shall be carried out on 10% of samples. In case of failure, entire lot shall be re-offered. i) Performance II) Di-electric Test 10. LABELLING / MARKING: Products should be marked with the following: i) Type NOs. of each product should be punched for identification. ii) Month and Year of manufacture. iii) Name of manufacture with trademark, Code No. & Batch No.
Page 1 and 2: REVISED SPECIFICATION Sheet-1 of 12
Page 3 and 4: TECHNICAL SPECIFICATION FOR PRESSUR
Page 5 and 6: III. ENVIRONMENTAL CONDITIONS Fluid
Page 7: vii) CONNECTOR: All connection must
Page 11 and 12: Scope of Supply- i) Sensor ii) Cabl

REVISED SPECIFICATION TENDER SPECIFICATION No.:

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