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Recent content by munzir

  1. M

    Would 40 AH battery charger work better (without causing damage and

    Would 40 AH battery charger work better (without causing damage and without reducing the battery life) to charge 2 batteries lead acid of 85 AH each i.e. in parallel 170 AH (total 170 AH) ? thanks
  2. M

    I want to control a motor (pump) speed via vfd

    I want to control a motor (pump) speed via vfd in such a way that when temperature of the water increases the pump speed also increased and when temperature of the water decreases the speed of the motor (pump) also decreased ..... can we used external PID control with a VFD OR use a VFD having a...
  3. M

    How to calculate the delay time for a soft starter ?

    Re: How to calculate the delay time for soft starter ? basically there's a damper attached to this motor and this motor is used to **** up the dust and fumes produce during melting process of metal scrap by induction furnace (oven) ........ it takes 80 seconds to reach its max. speed and...
  4. M

    What Frequency VFD increases , Voltage frequency or Current frequency ?

    Does a VFD increase current and voltage also if its changing the frequency from 0 to 400 Hz ?
  5. M

    Why Sink & Source options are given in a VFD and in a PLC ?

    What Sink option does provide what source does in a VFD ?
  6. M

    Why Sink & Source options are given in a VFD and in a PLC ?

    Why Sink & Source options are given in a VFD and in a PLC ?
  7. M

    What's the need of using both protocols i.e. MODBUS & Ethernet (TCP/IP) in a single P

    Re: What's the need of using both protocols i.e. MODBUS & Ethernet (TCP/IP) in a sing I have seen a PLC that have both communication protocols i.e. MODBUS & Ethernet (TCP/IP) .... so i just want to know why both communication protocols are used with that PLC .....
  8. M

    What's the need of using both protocols i.e. MODBUS & Ethernet (TCP/IP) in a single P

    What's the need of using both protocols i.e. MODBUS & Ethernet (TCP/IP) in a single P What's the need of using both protocols i.e. MODBUS & Ethernet (TCP/IP) in a single PLC ?
  9. M

    Why input amperage mentioned on a device's nameplate but not output amperage ?

    On UPS nameplate / specifications ..........
  10. M

    What Frequency VFD increases , Voltage frequency or Current frequency ?

    means IGBT change the normal frequency to carrier frequency by switching on and off ?
  11. M

    Why input amperage mentioned on a device's nameplate but not output amperage ?

    Why input amperage mentioned on a device's nameplate but not output amperage ?
  12. M

    What Frequency VFD increases , Voltage frequency or Current frequency ?

    What Frequency VFD increases , Voltage frequency or Current frequency ? By increasing the frequency does the current or voltage increased ?
  13. M

    how to test a Triac IC and IGBT (single IGBT component) with a normal DMM ?

    how to test a Triac IC and IGBT (single IGBT component) with a normal DMM ?
  14. M

    How many amps a single core wire of 1mm can pass through in open air or i.e. open n?

    Can we calculate amps in each core of a multi-core cable ? If 3 core cable of 1.5 mm size can withstand 17 amps in open air then almost 6 amps are passing through each of the three cores or 17 amps current is passing through each cores ? Thanks in advance

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