inrush

inrush

Recent contents View information Top users
  1. J

    How to protect inrush current

    Hello How to protect in rush current by ntc in smps
  2. G

    Solutions for LED inrush current

    I am upgrading garage lighting. I have installed 12 40W batten lights (cheap Amazon variety - don’t have specs). 6A breaker in Garage consumer panel is tripping on inrush current. House consumer panel 32A breaker for garage is also tripping occasionally. Both are type B. No surprises so far...
  3. S

    Solar How do I limit or feed inrush current for higher constant current use?

    How do I limit or feed inrush current for higher constant current use? If I could find solution, then the chosen battery cell type can have much lower Discharge/Charge rate. My product research found that lower Discharge/Charge rate cells are much lower price. So you can purchase more storage...
  4. T

    Inrush into 4.3mF capacitor bank

    Hi, We have a 4kW PFC we are doing. (100-265VAC, +/-180V) The input is a Boost PFC...it has 4.3mF of output capacitance. We want to inrush into it through a resistor, then short out the resistor with a relay. We want the resistor to be 20 Ohms. Whats the smallest 20r resistor we can use for...
  5. 0

    Designing with LED driver inrush currents

    Hi, I am just trying to get my head around designing circuits with high bays, in particular the inrush current from these lights. So say I've got 10 (for ease) 150watt high bays (6.5Amp load @ 230v) with an inrush current of 40amp fitting (400amp) . The instaneous trip current for a 10 B...
  6. N

    Type B rcbos and inrush current

    Does any one have a rough idea how many 24w led panel 600x600 could go on a 10 amp type b rcbo with out tripping or a 6 amp type B rcbo I found a long circuit that complies with zs when a direct measurement is taken at its furthest point , but on length alone im sure it does not comply by...
  7. D

    Calculating inrush current for magnetic ballasts

    I need to, as accurately as possible, establish what the inrush current is for some large metal halide floodlights with magnetic ballasts and I'm drawing a blank. This is for a switchgear/DB replacement I am in the planning stages of and need to know whether these circuits can be fed from MCBs...
  8. J

    Power Consumption of Solenoid Valve

    I have a 24VAC 50-60Hz solenoid valve that has a power consumption of 125VA (Pull in) and 12VA (Hold in). This is connected to the output of a 230v to 24VAC transformer, however the secondary side of the transformer has two 75VA rated power outputs and the solenoid valve is only connected in...
  9. Loki

    Inrush current for pool lighting - pool cafe hotel project

    Hi, Just a quick question regarding inrush current for my pool lights circuit in my pool/cafe hotel project? I was looking at 5 of these: Pool LED - https://www.apollolighting.co.uk/products/pool_led/ 125W per light (5x 125 = 625W / 230 = 2.72A) Issue is that the inrush current per light is...
  10. HappyHippyDad

    Advice regarding inrush current please?

    I have just fitted 5 x 200w LED floodlights on the same switch. I fitted 3 yesterday all worked fine. However the owner said they tripped once after I had left, no further info as to if they tripped immediately or after a while. I have just fitted the last 2, the MCB is tripping immediately...
  11. D

    Dealing with Inrush current from ded driver

    Hi, Newbie here so please bear with me if I haven't provided all the details. I am not an electrician but my dad was and my cousin are so I know a few things. My dad has retired now but my cousin is qualified and will do the work for me when he eventually comes round. I need to have everything...
  12. Dobes_88

    Inrush currents and solutions......

    Good evening! Wanting to pick the brains of people more experienced in this field, approaching 2nd fix stage of an ongoing rewire where the client wants a shed load of lights throughout. What particularly worries me is the hallway and kitchen grid switches where there’s around 10-12 lights...
  13. J

    Powering on 10 Meanwell HLG 240 LED drivers.

    Hello guys. I have 10 x HLG-240 1400A drivers, which will run at 250W each. The problem is, I did not know about the surge upon starting each driver, apparantly I cannot start more than 2 drivers at once per UK plug socket... Please see attached. I guess I could buy 10 different plug in...
  14. Davisonp

    Measuring Inrush Current

    I am trying to find the maximum current drawn through a switchfuse circuit supply circuit (60Amp switchfuse). I have been told that there should be a large inrush current when some equipment kicks in, but I would like to confirm the actual inrush current. I have had a look at cheap current data...
  15. snipersmith87

    LED volt drop- maximum LEDS on 6amp??

    First post all so go easy lads.... What's people's views on maximum amount of LEDS on a 6amp mcb lighting circuits?? 6w LED GU10s throughout. Wired in 1mm twin and earth. Maximum cable runs??? Nearly every spark I speak to has a different verdict. Should we still be considering if 50w halogens...
  16. S

    Electrical engineer looking for practical knowledge

    Hi All, I am a 26 year old Lighting Engineer with electrical background. As i started my career as a lighting engineer my practical knowledge on electrical aspects related to Industries, building design, Rail traction etc is minimal. I would like to learn more about the same as i am looking for...
  17. G

    Led panels

    Chaps, this guy has 16 x 40w led panels in his office. Now he wants them all switching by one occupancy sensor. But I'm concerned about the start up current, is there a sensor available that will cope? Or one that anyone can recommend. Cheers gents
  18. D

    LED inrush

    I'm going to look at a job this week at a warehouse which requires replacing all the existing 6 foot twin fluorescent fittings with LED versions. They've requested the fittings are kept as they're relatively new so will look to bypass ballast etc. Not sure on the number but it'll be a few dozen...
  19. NDG Elecs

    Measuring inrush currents.

    Hi, Apart from spending £300 on another clamp meter (although I am tempted!) is there a cheaper way to measure inrush currents? Can't seem to find anywhere to hire one either for less than £100.00. Oscilliscope either. This is a one off job and am curious about the actual inrush on some LEDs...
  20. A

    lighting circuits- Type B or Type C MCB

    What do you guys tend to use Type B MCB for lighting circuits but know that some use Type C even when the loadings are low. What do others prefer and why?

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top