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Questions tagged [busbar]

A metal bar used for carrying high currents. Consider using in conjunction with related tags such as "power", "power-electronics", etc.

A metal bar used for carrying high currents. Consider using in conjunction with related tags such as , , etc.

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Aluminum bus bars connection to PCB

I am going to use aluminum bus bars in a high-current PCB. What is the best technique to establish contact between the PCB and the bars? I plan to make my own bars. The current is generally going to be around 100-150 A per single connection (a bar…
TQQQ
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Why would a current measurement shunt design use 4 sense pins?

I am interested in low resistance shunts (tens / hundreds of microohms range) used in high voltage / high current setting. Typically, those are busbar-mounted shunt resistors like this one: The current is passing through the busbar and the shunt,…
Dainius Stankevicius
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A 200-mile-long neutral busbar doesn't sound real

In Chapter 1 of Power Systems Analysis (Grainger/Stevenson), the authors present a sequence of representations of the same power system (Fig 1.25 --> Fig 1.26 --> Fig 1.27). I am confused by the last of these three. Why is the neutral line in the…
artist_and_not_EE_by_training
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Mounting through hole package on busbar

Through-hole components are not designed to be busbar mounted. But I have the need to use "laminated" busbar because of some factors (among others): High current Small parasitic inductance Power PCBs are also not available for small production, or…
Diego C Nascimento
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Can I connect aluminium conductor to copper bus bar?

This is a follow-up for the aluminum bar question here: Aluminum bus bars connection to PCB My design now is based on copper - low resistance, assembly by soldering. For now, this is probably the best. Yet, there are two contacts that I have no…
TQQQ
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In a three-phase circuit, do all three phases connect to the same bus or are there three separate buses?

Below is a per-phase representation of a small power system from Power Systems Analysis (Grainger and Stevenson, p206). I'm trying to imagine the three-phase version of this circuit diagram. Let's take the connection between bus 1 and bus 2 as an…
artist_and_not_EE_by_training
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How to design DC bus bars for batteries?

What factors should we consider for designing bus bars for cell terminals? Suppose I have LFP battery pack made up of 9 cells in series each having maximum of 3C discharge rate and a nominal capacity of 50 Ah with voltage range of 2.5-3.65 V. Each…
mod3k
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Bus Bar voltage calculations for renewable integration to grid

I am confused on the problem bellow I started off by use P=IV = V^2/Z --> V=sqrt(P*Z) Assume at each bus bar the power from the PV is being given to the grid with +6KW from knowning that the PV produces 10KW but the load PL uses 4KW We know that z…
xganh zu
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Lithium ion battery pack busbar thermal calculation

I am designing busbars for lithium-ion battery pack which is 14-series, 9-parallel combination. We have taken busbars sizes as per the industry standard current density 3A/mm2. (Total current 48 A, used busbar size 16 mm2.) I need to run the thermal…
palle venkii Reddy
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How do I recognize which type of bus bar these are? What are thecharacteristics of their circuit? They are so similar

I have a big problem with matching bus-bar names with their corresponding circuits. For example, there are four circuits for 5 main types of bus bar, but I can't match the name with their corresponding circuit. single bus-bar is easy to recognize,…
shineele
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Estimated voltage, amperage and phase count of this MASSIVE busbar system?

Any guesses as to the likely voltage, amperage, and phase count running on this massive 3-conductor copper busbar system? Found in an old factory. Decommissioned long ago, so I can't just poke it with multimeter. :)
bigjosh
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Parallel busbars: how to orient?

As part of my research, I'm doing calculations on a hypothetical high-current (4000 A) medium-voltage (5000 V) DC power transmission system using two parallel busbars. However, I need to decide how the busbars are oriented relative to each other,…
Hearth
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What is the official name of this "shorting bar 5-position" header?

I have purchased this item locally in the past and basically its 5 wires aligned in parallel, and makes my circuitry much easier (eliminates the needs to manually connect 5 individual wires side-by-side). They are however running out of stock and…
user116345
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Bus terminal for wire interconnetion

So I have multiple wires (~5) from 0.75mm² to 10mm². I want to connect them like with Wago, but they are bigger than Wago can hold, and I need to fix them in place on panel. Example. So these have holes to screw them on panel. This is exactly what I…
Ri Di
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Is "nodal voltage" a bit of a misnomer? Is there really just one voltage at a node?

The admittance model (of power systems) only ever seems to associate one voltage with any given node or busbar (e.g., just V1 at node 1 in the figure below). Is there an implicit assumption here that the busbar is an equipotential surface? I see in…
artist_and_not_EE_by_training
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