Procurement of 5 nos. of Transformer Winding Resistance Meter(TWRM)

• Name & Designation of the officer of the Bidder/Manufacturer to whom all reference shall be made for expeditious technical co-operation-

• Place of Manufacturer

• Service of facilities available

• Availability of spare parts

• Bidder proposal no & Date

• Annual production units for past 5 years

• Annual Turnover for the 2021-22 (in Rs. Crores)

• Annual Turnover for the 2022-23 (in Rs. Crores)

• Annual Turnover for the 2023-24 (in Rs. Crores)

• Annual Turnover for the 2024-25 (in Rs. Crores)

• Annual Turnover for the 2025-26 (in Rs. Crores)

• Average Annual Turnover for best three years out of last five financial years. (in Rs. Crores).

• Liquid assets (current assets minimum inventories) and/or evidence of excess to or availability of credit facilities of our company(Specify amount with Date)(Rs in crores)

• Make

• Model no.

• Technical specification of Transformer winding Resistance Meter (TWRM)

• Confirm whether equipment shall be suitable for measuring DC winding resistance of all Transformers & Reactors up to 400 KV Transformer/ Reactors where high inductance is present

• Confirm whether three independent measuring channel quick stabilization period available

• Confirm whether equipment shall employ four wire methods and no lead compassion shall be required for the measurement

• Confirm that the test kit should simultaneous measure and display of three channel winding resistance of all three winding in single connection of kit with transformer

• Confirm that equipment have Direct heat run test mode.

• Confirm the Test Current Range(50 Amp DC continuous then open circuit voltage is greater than equal to 50 V

Or If 25A/30 DC continuous then open circuit voltage greater than equal to 100V)

• Confirm whether equipment has Current flow alert

• Over range

• Open ckt Test Voltage range (42V DC or more)

• Confirm whether 4 � Digit display for resistance

• Confirm whether 3 � digit display for test current

• Resolution

• Accuracy

• Measurement Ranges

• Confirm whether the equipment shall have in-built demagnetization circuitry which shall allow the operator to manually/automatically demagnetize the transformer core, either before or upon completion of resistance testing, or as a standalone feature.

• Confirm that the kit should have the facility to have correction of resistance value to a reference temp. i.e. provide temp. compensated reading of resistance (For Cu & AI)

• Confirm whether keyboard in front panel and ineractive

• Power supply

• Confirm whether built-in-discharge circuit should be provided to discharge the specimen when test is completed or when current lead accidentally disconnects or when instrument power supply is lost.

• Confirm whether the kit should have all necessary protections against transient voltages, induction, short circuits etc.

• Confirm whether the kit should have facility of discharging the specimen when test is completed or when current cable accidently disconnected or when instrument power supply lost

• Storage(internal, upto 1000 sets of reading)

• Confirm kit should offer Repeatability of test results in 400kV charge area

• Confirm whether the kit should have necessary in built cooling arrangement should be provided to dissipate heat generated during testing. No external coolent/accessory shall have to be required

• Confirm Software should be suitable for automatic testing and report generation including temperature compensation

• Confirm kit should have facility to connect with window based computer/ laptop for extracting data.

• Confirm that the complete equipment along with complete accessories must be designed/ engineered by Original Equipment Manufacturer.

• Accessories details

• Confirm that Unit shall be duly calibrated before supply and the date of calibration shall not be older than two month from the date of supply of Kit. However party will have to submit the calibration certificate from/traceable to, NABL accredited lab or internationally reputed lab. Date of calibration shall not be older than two months from the date of supply of Kit.

• confirm that the kit should be compatible for EMI/EMC/ safety environment requirement as per IEC.

Temp 0 to 50 Deg.C,

Humidity not condensing-up to 95%,

• The relevant standards should be as below;-

Ingress Protection: IP54 CE Certification

Safety: Meets requirement of IEC 61010-1

EMC: Meets requirement of IEC 61326-1

• The kit and accessories shall be robust and rugged enough, so that the transportation from one station to other will not affect the performance and accuracy of measurement of kit.

• Confirm that Bidder will have to submit the documentary evidences of having established mechanism for prompt services as and when required by BSPTCL. Bidder need to submit their organization service chart along with bid

• Confirm that The contractor shall have to demonstrate the instrument to the satisfaction of BSPTCL. The Supplier shall have to ensure the kit is made user friendly apart from the detailed demonstrations at each site. The instrument failed during the demonstration shall be rejected.

• Confirm that Supplier shall have to ensure that the instrument is made user friendly. Apart from the detailed demonstration at site, the supplier shall also have to arrange necessary training to BSPTCL engineers