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  1. S

    DC - DC Converter - 25 kW inverter

    Hi can you please have a look at the datasheet i have attached and please advice the same. i need an output power of 25kW, 3phase supply from the inverter.
  2. S

    DC - DC Converter - 25 kW inverter

    Thank you for getting back to me. Can you please have a look at the attached datasheet of the inverter (S5-GC-30K - model).
  3. S

    DC - DC Converter - 25 kW inverter

    Hi, I have a question regarding DC-DC converter. I am looking to get 25 kw output 3 phase power from the inverter, with the help of solar panel modules. The inverter requires a DC input voltage of 1000 Vdc (max) and 38A dc (max). i want to step the voltage from 110 V dc, 250 Adc from the solar...
  4. S

    Undercurrent Monitoring - current relays

    Hi, I have a question regarding the usage of current relays in the circuits. I am planning to install a thermostatic heater along with a current relay circuits to monitor if the heater is working. Since it is thermostatic, it will be operating only during certain temperature ranges. The times...
  5. S

    Conversion from DC to AC

    Hi I am trying to find the logic behind powering an AC device from the output of a fuel cell. I know the fuel cell output voltage is DC and hence we may need a DC-DC converter and an inverter but i am not sure of the stages involved. Can someone explain how to go about it or if theres any good...
  6. S

    Three Phase or Single Phase for instruments

    Thank you for the detailed explanation
  7. S

    Three Phase or Single Phase for instruments

    Hi, i have a question regarding selection of electrical instruments like compressors, fans, etc. The compressors are available in both three phase and single phase according to the datasheet. How do we select which type we need if we are designing a system from scratch (ie both three phase and...
  8. S

    Circuit Breaker for Air Compressor

    Thank you for the detailed explanation. In some equipments rated current or nominal current is mentioned sometimes. Can we use that for finding value of MCB? Also do we have to decide the cable before deciding on circuit breakers or this is the right way to do it?
  9. S

    Circuit Breaker for Air Compressor

    Hi I have to decide on a circuit breaker for an air 22 KW, 3 phase 400V Air compressor. Load current = P / (1.732 * V *PF) =22000 /(1.732*400*0.8) = 39.69A Imposing the 125% CB rule in accordance with NEC, Current = 39.69*1.25 = 49.61A Therefore a 50 A Type C CB is used. These are my...
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