Procurement of DIGITAL EARTH RESISTANCE METER as per enclosed specifications for KHEP, KPCL

Sl.No Item Code Item Name Specification

1 661080101R DIGITAL EARTH RESISTANCE METER Digital Earth resistance meter: The equipment shall measure earth resistance and ground resistivity. The features include alpha numeric display, Auto range, built in memory, Up to 50 meters selectable distance, IP 54 protection. 1.Operating frequency 270Hz (Resistance or resistivity measurement), 570Hz, 870Hz, 1170 Hz or 1470Hz (Resistance measurement). Maximum variation +/- 01Hz (Both cases). 2.Voltmeter: The equipment operates as a conventional voltmeter, making it possible to measure voltages generated by parasitic currents. Voltage measurement: +/- (3% of the measured value +/- 2 digits), 3.Accuracy: Resistance and resistivity measurements: R<=2k Ohm: +/- (2% of the measured value +/- 2 digits) R>2k Ohm: +/- (5% of the measured value +/- 2 digits) 4.Reading Resolution: 0.01 Ohm in the resistance measurement, 0.01Ohm meter in the resistivity measurement. 0.1 volt in the voltage measurement. 5. Output current: The short circuit current is limited to less than 20milli amps rms (according to the IEC 61157-5-4.5) 6.Immunity to spurious voltage interface: During the R measurement it allows for the presence of spurious voltage up to 7 volt AC, with the error <10%. 7.Earth resistance of auxiliary rods: In the resistance measurement it allows resistance of auxiliary rods up to 50k ohm with error less than 30%. 8.Interface: USB, 9.Built in printer: for printed register document of measured values. 10.Power supply: Internal rechargeable low self discharge battery (12volt-3000mAH). 11.Battery charger: AC adopter 12V-2amps., 12.Safety clause: In accordance with IEC 61010-1. 13.EMC: In accordance with IEC 61326-1., 14.Electro static immunity: In accordance with IEC 61000-4-2. 15.Electromagnetic irradiation immunity: In accordance with IEC 610004-3. 16.Operation temperature: -10°c to 50°c 17.Storage temperature: -25°c to 65°c 18.Equipment weight: Not more than 5kgs. The equipment must be shielded for high induction working areas. The equipment shall be supplied with Steel rods/Test spikes and leads, suitable cables required for measurements, charger power cord, USB cable, and cable to connect to the grounding system to be measured, and connection wire to supply the charger with the 12V external battery, user guide/manual, carrying case etc. The testing kit should be fully automatic and user friendly.