Phase 4 – Wire L.T. Solid State ( Static) Whole Current ... - WBSEDCL

h) Operating Frequencyi) Principal unit(s) of measurementj) Meter Constant (impulse/kwh)l) Class index of meterm) Property of WBSEDCLl) Purchase Order No. & Datem) Guarantee (Guaranteed for a period of 5 ½ Yrs. From date of delivery)n) BIS markingo) Place of manufacturep) Meter Sl. No. in alpha numerical form, Dt. of manufacturer, Rating of the meter andP.O. reference should be bar coded. Readable by single layer Bar code reader.N.B.:-Separate marking for i) import and ii) Export-Import to be made in Name plate11.0 DISPLAY OF MEASURED VALUES :The meter shall have Alphanumeric display with at least 7 full digit with LCD backlitdisplay, having minimum character height of 10 mm. The data should be stored in nonvolatilememory. The non-volatile memory should retain data for a period of not lessthan 10 years under unpowered condition. Battery back-up memory will not beconsidered as NVM.It should be possible to easily identify the single or multiple displayed parametersthrough symbols / legend on the meter display itself or through display annunciationwhich should be self explanatory and symmetric.The register shall be able to record and display starting from zero, for a minimum of2500 hours. The energy corresponding to rated maximum current at reference voltageand unity power factor. The register should not roll over in between this duration.In addition to provide Serial Number of the meter on the display plate, the meter serialno. should also be programmed into meter memory for identification throughcommunication port for CMRI / laptop / meter reading printout.Visibility of display in poor light conditions is an important criterion. STN or TN type ofLCD to be used. (Proper annunciation legends for the displayed parameters to beprovided.).Back lit provided for clear visibility should be uniform throughout all part of theLCD.The meters should have auto-display mode for pre-selected parameters. Push-Buttonmode of display should display all parameters and it should have priority over automode. *The meter should give clear message on display to indicate that the meter hasexperienced tampers and the nature of tamper with date and time of first occurrence,last restoration and last occurrence, if the Last tamper status is not restored. *Connection check, Phase sequence and self diagnostic should give clear message ondisplay.The meter shall have a test output (blinking LED) accessible from the front and becapable of being monitored with suitable testing equipment. The operation indicatormust be visible from the front. Test output device should be provided in the form of onecommon LED for active and reactive energy with the provision of selecting theparameter being tested (separate LED may also be used with proper separation).5