Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Maximillianrichards

    The first launch of the Space Launch System [SLS]

    WKTaylor, Thank you for sharing this information, Wil. Indeed, testing such a complex and powerful system like the SpaceX Starship is challenging, and there is always a risk of failure. However, SpaceX's iterative design approach and their willingness to learn from each test will likely help...
  2. Maximillianrichards

    Earth ground meter Vs Multimeter

    You can use an ordinary multimeter to measure resistance between two points, including railway-to-earth resistance, as long as the resistance value is within the range of the multimeter's ohm scale. However, using a specialized Earth ground tester with a 2 pole resistance measurement technique...
  3. Maximillianrichards

    MCCB + Contactor Feeder

    Hi! Parchie, che12345 From https://www.asutpp.com/circuit-breaker.html An air circuit-breaker is a circuit-breaker in which the contacts open and close in the air at atmospheric pressure. MCCB (Molded Case Circuit Breaker) and contactor combinations are commonly used for non-motor circuits...
  4. Maximillianrichards

    Can a stand by generator 264 kW supply a 75 kW compressor + some loads?

    To determine if you can connect the air compressor to the standby generator, you'll need to calculate the total power requirement of all connected loads, including the compressor. For a 75 kW air compressor and 52 kW of other loads, the total power requirement is 127 kW. With a 264 kW...
  5. Maximillianrichards

    Common GND Line?

    In general, it is acceptable to connect all of the consumers to a common ground (GND) line in a low-voltage DC system as you have described, especially when the system is functioning properly. However, depending on the specific application and the nature of the loads, there may be cases where...
  6. Maximillianrichards

    SVLs for 33 kV Cables

    It is possible that Surge Voltage Limiters (SVLs) may not be required for single bonded 33 kV cables, as they are commonly used for higher voltage levels such as 66 kV and above. However, this may depend on the specific installation and operating conditions.
  7. Maximillianrichards

    Infra Red heater starter

    Hi! Yes, it makes sense to have two disconnect switches fed on a circuit in your scenario, as you want to provide separate control and isolation for each IR heater. This allows you to safely turn off the power to one heater without affecting the other, and also allows for individual control of...
  8. Maximillianrichards

    Kw rating of a motor

    The kW rating on a motor is its electrical power rating, which is a measure of the amount of electrical energy it consumes. The mechanical output of a motor is typically lower than its electrical power input due to losses from the efficiency of the motor. You can use a 7.5 kW isolator for a 7.5...
  9. Maximillianrichards

    Transformer derating for Neutral Harmonic Currents - Harmonic Current Scaling?

    The harmonic spectrum of a system is proportional to the load current, so it is possible to scale the harmonic orders by multiplying the measured spectrum by a factor that represents the desired load level. In this case, if the system is currently loaded to 25% of its rated load and you want to...
  10. Maximillianrichards

    MV Air Insulated vs Gas Insulated Switchgear

    There are several factors to consider when comparing Medium Voltage Air Insulated Switchgear (AIS) and Gas Insulated Switchgear (GIS). Here are some of the key differences to consider: Initial Cost: AIS is typically more economical upfront compared to GIS, due to its simpler design and lower...
  11. Maximillianrichards

    Pre-commissioning electrical tests for overhead powerlines

    Hi! Re-commissioning tests on overhead medium voltage (MV) power lines typically include: [ol 1] Continuity tests: This test verifies the electrical connectivity of all conductors, including the ground wire. Insulation resistance tests: This test measures the resistance between each conductor...

Part and Inventory Search

Back
Top