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Tender For supply of 2.2 kw ac crane drive , 5.5 kw ac crane drive , 11.0 kw ac crane drive , 22.0 kw ac crane drive , 37.0 kw ac crane drive , 55.0 kw ac crane drive , 75.0 kw ac crane drive 3 phase, digital ac crane drive 2.2 kw, ac drive should be suitable for heavy duty operation of 2.2 kw. offered ac drive should be suitable for crane-hoist operation. if, separate software required for crane application, it must be clubbed with supply of material. ac input voltage: 380 to 480v ac 10%, 3 phase, 3 wire, 50 hz; mode of control: bi-directional fully controlled 3-phase ac; speed regulation: 1% of base speed; braking: suitable dynamic braking resistance and chopper unit (external or in-built); acceleration time: 0.1 to 1000s or better; deacceleration time: 0.1 to 1000s or better; overload: 150%-1min, 200%-3.0s; ambient temperature: 0 to 50 c (derating shall not occur below 50 c. in the event that derating occurs below 50 c, the supplier shall provide a higher-rated drive to match the requirement); rated current at 50 c: min. current should be 5.5 amps at 50 c; high starting torque at low speed: 200% starting torque at 0.3 hz; two analog inputs: two nos. analog inputs having signal voltages of 0 to 10 vdc or 4 to 20 ma (configurable); two analog outputs: two nos. analog outputs having signal voltages of 0 to +/-10 vdc or 4 to 20 ma (configurable); six digital inputs: pnp/npn; one relay output: with short-circuit and overload protection; two digital outputs: with short- circuit and overload protection; brake release signals: outputs braking signals based on inverter operating conditions to prevent cargo bed rollback and overrunning; load adaptive control: when the actual load level is lower than the configured load level, the system can be operated at a ratio-multiplied speed (in terms of the configured frequency), resulting in significantly better efficiency; load ) /bid number : gem/2026/b/7563714 * /dated: 20-05-2026 & & / bid document 1 / 29 frequency), resulting in significantly better efficiency; load limiter: maintains the safety and rescuability of suspended loads by stopping when excessive torque is detected and by allowing operation only in the direction opposite to that in which the excessive load was detected; cooling capacity degradation alarm: detects and displays cooling capacity drop due to cooling fin clogging caused by dust and cooling fan airflow reduction; igbt life expectancy forecasting: estimates the power cycle life expectancy of the main circuit s igbt semiconductor device temperature due to frequent acceleration and deceleration stoppages, and displays the estimate before the design life is reached; protection: it must have all standard protections like stall protection, instantaneous power failure, single phasing, over voltage, under voltage, over current, inverter overload, thermal overload etc; display console: it must have alpha numeric display console for programming of drive, fault display and operating condition; dynamic qr code: it must have dynamic qr code for trouble shooting; tuning facility: it must have auto tuning facility. this must enable perfect matching of motor coupled to load with regards to optimum acceleration time, deceleration time, speed regulation etc; drive programming software: suitable drive programming software along with necessary connecting cable and adapter for connection with laptop and drive should be provided to get online with the offered drive (laptop not in scope); automatic voltage regulation: it must have automatic voltage regulation function to maintain high starting torque even at reduced voltage; regenerative option: it must be capable of regenerative operation; communication protocol: modbus (rtu/serial) or ethernet (tcp/ip); make of drives: fuji- electric/yasakawa/schneider/abb only; suitable dynamic breaking resistance unit of 60% wattage rating of drive, however the value of resistance is to be decided by manufacturer as per their technical manual for crane-ho
Tender For corrigendum : supply of rollerreshelling d d - reshelling of roller shaft with scrap of mill size 33 inch by 66 inch mill top feed discharge , rate of conventional roller with juice ring , rate of conventional roller without juice ring , rate of lotus roller with juice ring , rate of lotus roller without juice ring , charges of extra diameter per 5 mm increase in dia charges of extra diameter per 5 mm increase in dia , reshelling of roller shaft without scrap of mill size 33 66mill topfeed discharge , rate of conventional roller with juice ring rate of conventional roller with juice ring , rate of lotus roller without juice ring rate of lotus roller without juice ring , charges of extra diameter per 5 mm increase in dia , deshelling reshelling of under feed roller with scrap mill size 33 by 66 mill including grooving as per drawing , reshellingroller shaft with scrap of mill size 40 by 80 mill topfeed discharge , rate of lotus roller with juice ring rate of lotus roller with juice ring , reshellingroller shaft without scrap of mill size 40 by 80 milltopfeed discharge , v grooving messchart groove if in the drawing included , for all roller size pitch size 25 mm , for all roller size pitch size 30 mm , for all roller size pitch size 35 mm , for all roller size pitch size 40 mm for all roller size pitch size 40 mm , for all roller size pitch size 50 mm , for all roller size pitch size 60 mm , machining of roller shaft for bloom size , roller for dia size 440 mm 3700 mm length 33 by 66 , roller for dia size 580 mm 5300 mm length 40 by 80 , journal polishing of roller shaft for all mill sizes , key way cutting charges , cautch roller per nozzle ) /bid number : gem/2026/b/7418267 * /dated: 10-04-2026 & & / rate contract bid document this rate contract bid is governed by general terms and conditions of rate contract 1 / 31
Tender For supply of rate contract for rollerreshelling works c c - reshelling of roller shaft with scrap of mill size 30 inch by 60 inch mill top feed discharge , reshelling of roller shaft without scrap of mill size 30 inch by 60 inch mill top feed discharge , reshelling of roller shaft with scrap of mill size 33 inch by 66 inch mill top feed discharge , reshelling of roller shaft with scrap of mill size 33inch by 66 inch mill top feed discharge , reshelling of roller shaft without scrap of mill size 33 inch by 66 inch mill top feed discharge , reshelling of roller shaft with scrap of mill size 36 inch by 72 inch mill top feed discharge , reshelling of roller shaft without scrap of mill size 36 inch by 72 inch mill top feed discharge , reshelling of roller shaft with scrap of mill size 39 inch by 78 inch mill top feed discharge , reshelling of roller shaft without scrap of mill size 39 inch by 78 inch mill top feed discharge , reshelling of roller shaft with scrap of mill size 40 inch by 80 inch mill top feed discharge , reshelling of roller shaft without scrap of mill size 40 inch by 80 inch mill top feed discharge , v grooving messchart groove if in the drawing included , machining of roller shaft for bloom size , journal polishing of roller shaft for all mill sizes , nozzle for couch roller