EEU Tender for oil test instruments
ETHIOPIAN ELECTRIC UTILITY (EEU) Technical Specifications for Transformer Oil Moisture Measurement/Automatic Volumetric Titrator
1. Functional Requirement: Meter shall be able to carry out- Instantaneous on line Moisture measurement of transformer mineral oil, Electrical-insulating liquids, Relative Saturation/water activity and Temperature without use of any chemicals or titration. Meter shall be portable, It should give continues water activity/PPM output with temperature Data.
An optional arrangement if available for measurement of, dew point, PC inter phase etc may be included in offer, However the tech/financial evaluation will be made for the basic kit which has facility of measurement moisture measurement as detailed above in para-1above.
The instrument shall work in charged switchyard environment conditions at 400KV level.
2. Sensor: Probe shall be made of stainless steel, shall be able to sustain temperature range –40 to 100 deg C, vacuum and pressure range up to 20 bar.
3. Response of Meter: 10 minute max
4. Anolog/Digital output: 0..1V DC
5. Range of Measurement: 0 to 100 % Relative saturation. @ accuracy ±2% Or
0 to 1 Water activity enabling PPM measurement @ accuracy ±0.03% Or
-40 to 100 deg for temperature @ accuracy ±0.2 deg C
6. Transmitter Display: LCD Alpha-Numeric and Graphical
7. Power Supply: 230±10%, 50 Hz Single phase/Battery Operated
8. Serial Output: RS-232/USB
9. Accessories: Probe cable 2.5 meter length, power supply leads, Hard Carrying case, Manual, Hex wrench, set of fitting adopters, software for data transfer to PC, ball valve or equivalent etc all required for meeting scope of work
10. Warranty and AMC: Kit shall be guaranteed for minimum 2 year. Supplier will have to execute AMC for five years for smooth and reliable operation of the kit after the completion of guarantee period. The rates shall be quoted along with the bid and it shall be taken into consideration during evaluation of bids. The AMC shall cover,
a) Calibration of instrument (annually)
b) As much as visits for repairs to site.
If the kit needs to be shifted to suppliers works for repairs, supplier will have to bear the cost of, spares, software, transportation, transit insurance (to&fro), etc of kit for repair at test lab/works .kit after repairs, need to be returned within thirty days from the date of despatch.
All the expenses for maintaining supplied instrument "Healthy and in working condition" is to be born by Successful bidder during the AMC period of 5 years within the charges of AMC as per LOA.
11. Commissioning, Training and Handing Over of the Instrument Successful Bidder will have to commission the instrument to the satisfaction of EEU. The instrument failed during the demo shall be rejected and no repairs are allowed.
Bidder will have to provide training to EEU transmission engineers for safe operation and maintenance of the instrument before handing over the instrument.
12. Calibration Certificate: Calibration certificate from/traceable to, NABL accredited lab or internationally reputed lab, shall be submitted. Date of calibration shall not be older than one month from the date of supply of Kit.
13. Environmental and statutory requirement: Shall conform EMC, safety and environmental protection requirement as per relevant International standard. Copy indicating conformation shall be enclosed.
• Temp- -5 to 50 deg C.
• Humidity- up to 95% non condensing
14. Additional safety requirement: The kit and accessories shall be robust and rugged enough, so that it can be transported safely at different locations. The transportation case and packing of the kit shall be such that the transportation from one station to other will not affect the performance and accuracy of measurement of kit.
15. Services after Sale: Bidder will have to submit the documentary evidences of having established mechanism for prompt services as and when required by EEU. Bidders need to submit their organisation service chart along with the bid.