Tender For supply of voltagemeasuringtransformer 750v/430v/110v, 3 phase ac, 50hz, 300va, as per type no. rg - 36/82/7-tp of m/s bhasin packard or equivalent, conforming to rdso specification no. rdso/pe/spec/ac/0203-2020 (rev-0), suitable for use in switch board cabinet of high capacity lhb eog power cars.
Tender For power electronics lab equipments - power elctronics lab equipments, line synchronized ramp trigger circuit using ujt with ac load to measure firing angles kitujt relaxation oscillator circuit, provision to add dc pedestal voltage to the capacitor in the circuit, triggering circuit fo r2scrs using pulse transformer, measure the phase angle of load, 24v lamp ac load using 2scrs, builtin power supply, scr commutation circuit kit" provision to charge the capacitance which will be used for voltage commutation, built in power supplies , class a,b commutation circuits", single phase to single phase cyclo converter kit"cyclo converter with divide by 2 supply frequency and divide by 3 frequency, +ve and ve polarity zero crossing detectors using optocouplers, decade counters to generate required control signals, isolated 4nos. of dc power supplies to trigger the scrs, triggering circuits to trigger the power scrs, power circuit using center tapped transformer, power circuit using 4scrs and12v-0-12v power transformer and resistive load, built in power supply", pwm based step down dc chopper using mosfet/igbt kit"pwm ic controller-based step down chopper, output voltage vs dutycycle, load characteristics without feedback, load characteristics with feedback, output voltage vs input voltage with feedback, built in power supply", single phase single pulse / sinusoidal pwm inverter using mosfet/igbt kitsinglepulse 50 hz clock generation, variable duty cycle generation on both half cycles, h bridge power circuit using 4nos. of mosfets, 4nos. of individual power supply for gate trigger circuit, built in power supply, on / off control of lamp using solid state relay kit"input switch to control the lamp on/off using solid state relay, one ssr module to test with lamp load, builtin power supplies", speed control of ac motor using vfd drive"adjustable v/f curve and vector control, keypad and external control of ac motor, builtin modbus (rs-485) pc communication ,suitable for 2hp motor", lamp dimmer circuit using triac kit"variable ac power circuit using triac, diac circuit to trigger thetriac in both half cycles, provision to vary the charging time of capacitor, (changing the phase angle also)for the diac"
Tender For corrigendum : supply of excitation system spares d d - thyristor module , feraz fuse , circular cooper reactor , isolator assembly 3p ac , isolator assembly 2p dc , dyn11 transformer , dc ammeter , shunt 1500a , thristor , ring type ct , exctn thyristor centrifugal cooling fan , gate circuit assembly with pulse trafo , voltage dropping resistor , field flashing contactor , field discharge resistor , stainless steelcast grid resistor , crow bar type over voltage protector , diode assembly , three phase rectifier bridge , hrc fuse assembly 250a , field flashing transformer , auxiliary relay re300 a , auxiliary relay re300 , dc voltmeter , hrc fuse assembly 16a , shunts , hrc fuse link , mdl69203ia1aa unc4660av1 v , cpu module , interrupt generator , analoug io card , digital io card , mdl 69203py2ba power supply card , mdl 69203du1aa un0663bv1 , davr mdl , pulse monit , pulse final stage , ac dc power pack unitrol , test point module , numerical 3 phase over current relay , numerical rotor earth fault relay , dc supply module , aux relay , relay aux ) /bid number : gem/2025/b/6585054 * /dated: 21-08-2025 & & / bid document 1 / 31
Tender For corrigendum : tender for supply of spares for various induction furnaces : : - gld opto bridge module rev4 fmod005629 , pulse firing module inductotherm code fmod5520 , converterscr model 147 2185 westcode part no fimp5143 , diode model 147 2181 pe part no fimp5164 , inducto high performa scr 147 9116 pe fimp005169 , inverter diode 147 3178 ow part no fimp005021 , pulse transformer assembly for inverter scr 3khz and above fmod005864 , 77by100mm scr dual firng mod rev7 ip 803747rev7 l fmod006564 , vip limit or det module w or dt pt si smt ver fmod006204 , pcb assy vip limit detector board fmod005024 , dc capacitor 900v 5000mfd 2500amps fimp005104 , dc cap open end link for fcap3100 one set has 2nos 8nos model fser001681